Anti-corrosion cosmetic packaging plastic oil pump

Abstract

The utility model discloses an anti-corrosion cosmetic packaging plastic oil pump, which belongs to plastic oil pumps and comprises a pump core, a head cap and a middle section, the pump core is mounted on the middle section, the head cap is mounted on the pump core, the pump core comprises a main column, a lock cover, an auxiliary column, a milk outlet rod, a piston, an elastic piece and a steel ball, a ventilation hole is formed in the top of the main column, and the lock cover is mounted on the main column. The milk outlet rod is provided with a feeding channel transversely penetrating through the milk outlet rod, the piston is arranged on the milk outlet rod in a sleeving mode and located at the inner top of the main column, the piston comprises an outer ring and an inner ring which are of an integrated structure, the outer wall of the outer ring and the inner wall of the main column are tightly attached to block the ventilation hole, and the inner ring wraps the feeding channel. In a natural (unused) state, the piston is located at the inner top of the main column to cover and block the ventilation hole, and even if a container is in an inclined or inverted state, materials cannot enter the pump core from the ventilation hole.

Description

Technical Field

[0001] The utility model relates to the technical field of oil pumps, in particular to an anti-corrosion plastic oil pump for cosmetic packaging. Background Art

[0002] In the fields of products such as cosmetics, mouthwashes, and edible oils, some products are packaged in containers with plastic oil pumps. By pressing down the plastic oil pump, the materials in the container are dispensed. As Figure 1 shown, this is a plastic oil pump in the prior art, which includes a head cap, a middle section, and a pump core. A ventilation hole is provided at the top position of the main column of the pump core, and gas is supplied to the pump core through the ventilation hole. However, sometimes the container needs to be placed upside down or tilted, and at this time, the materials in the container will enter the interior of the container along the ventilation hole. Summary of the Utility Model

[0003] The utility model aims to solve the problem that when the container is placed upside down or tilted in the prior art, the materials will enter the interior of the container along the ventilation hole. For this purpose, the purpose of the utility model is to provide an anti-corrosion plastic oil pump for cosmetic packaging.

[0004] To achieve the above object, the utility model provides:

[0005] An anti-corrosion plastic oil pump for cosmetic packaging, including a pump core, a head cap, and a middle section. The pump core is installed on the middle section, and the head cap is installed on the pump core. The pump core includes a main column, a lock cover, a secondary column, a milk outlet rod, a piston, an elastic member, and a steel ball. A ventilation hole is provided at the top position of the main column. A feed channel penetrating the milk outlet rod is provided on the milk outlet rod. The piston is sleeved on the milk outlet rod and is located at the inner top of the main column. The piston includes an outer ring and an inner ring with an integrated structure. The outer wall of the outer ring is in close fit with the inner wall of the main column to block the ventilation hole, and the inner ring wraps the feed channel.

[0006] Preferably, the secondary column is in snap-fit with the milk outlet rod, and a chamber is formed between the secondary column and the milk outlet rod, and the inner ring is located in the chamber.

[0007] Preferably, the main column is in snap-fit with the lock cover. A first inclined surface is provided on the inner wall of the lock cover, and a second inclined surface is provided on the outer wall of the secondary column. The first inclined surface is adapted to the second inclined surface.

[0008] Preferably, a step is provided at the lower end of the milk outlet rod, and a plurality of fins are provided on the outer wall of the step. A feed port is formed between two adjacent fins.

[0009] Preferably, the frustum is a hollow structure, a first contact surface is provided inside the frustum, a second contact surface is provided inside the main column, one end surface of the elastic member abuts against the first contact surface, and the other end surface abuts against the second contact surface.

[0010] Advantages of the present utility model:

[0011] In the natural (unused) state of the present utility model, the piston is located at the inner top of the main column to cover and block the air exchange hole. Even when the container is in an inclined or inverted state, the material will not enter the pump core through the air exchange hole.

[0012] The features and advantages of the present utility model will be described in detail through embodiments in conjunction with the accompanying drawings. Description of the Drawings

[0013] Figure 1 is a cross-sectional view of a plastic oil pump in the prior art;

[0014] Figure 2 is a cross-sectional view of the present utility model in the natural state;

[0015] Figure 3 is the present utility model Figure 2 magnified view of part A;

[0016] Figure 4 is a three-dimensional view of the milk outlet rod of the present utility model;

[0017] Figure 5 is a cross-sectional view of the present utility model in the depressed state.

[0018] In the figure:

[0019] 1. Pump core, 101. Main column, 1011. Air exchange hole, 1012. Second contact surface, 102. Lock cap, 1021. First inclined surface, 103. Sub-column, 1031. Second inclined surface, 104. Milk outlet rod, 1041. Feed channel, 1042. Frustum, 1043. Wing, 1044. Feed port, 1045. First contact surface, 105. Piston, 1051. Outer ring, 1052. Inner ring, 106. Elastic member, 107. Steel ball, 108. Chamber;

[0020] 2. Head cap;

[0021] 3. Middle section. Detailed Embodiments

[0022] In order to make the technical means, creative features, achieved purposes and effects of the present utility model easy to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0023] Exemplary embodiments will be described in detail herein, and examples thereof are shown in the accompanying drawings. When the following description refers to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. On the contrary, they are merely examples of devices consistent with some aspects of the present application as detailed in the appended claims.

[0024] The terms used in the present application are for the purpose of describing specific embodiments only and are not intended to limit the present application. Unless otherwise defined, the technical terms or scientific terms used in the present application should be the ordinary meanings understood by those of ordinary skill in the field to which the present utility model belongs. The terms "a" or "an" and the like used in the specification and claims of the present application do not denote a limitation of quantity but rather denote the presence of at least one. "Plurality" includes two, which is equivalent to at least two. The terms "comprising" or "including" and the like mean that the elements or items appearing before "comprising" or "including" cover the elements or items listed after "comprising" or "including" and their equivalents, and do not exclude other elements or items. The terms "connected" or "coupled" and the like are not limited to physical or mechanical connections, and may include electrical connections, whether direct or indirect. The singular forms "a", "the", and "said" used in the specification and appended claims of the present application are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term "and / or" used herein refers to and includes any and all possible combinations of one or more of the associated listed items.

[0025] Please specifically refer to Figure 2-5 , an anti-corrosion cosmetic packaging plastic oil pump, comprising a pump core 1, a head cap 2 and a middle section 3. The pump core 1 is installed on the middle section 3, and the head cap 2 is installed on the pump core 1. The pump core 1 includes a main column 101, a lock cap 102, a secondary column 103, a milk outlet rod 104, a piston 105, an elastic member 106 and a steel ball 107. The head cap 2 is specifically snap-fitted on the secondary column 103. A ventilation hole 1011 is provided at the top position of the main column 101. A feed channel 1041 penetrating through the milk outlet rod 104 is provided on the milk outlet rod 104. The piston 105 is sleeved on the milk outlet rod 104 and is located at the inner top of the main column 101. The piston 105 includes an outer ring 1051 and an inner ring 1052 of an integral structure. In the natural state, the outer wall of the outer ring 1051 is in close contact with the inner wall of the main column 101. The ventilation hole 1011 faces the position of the middle section 3 of the outer ring 1051. The ventilation hole 1011 can be blocked by the outer ring 1051, so that even when the container is in an inclined or inverted state, the material will not enter the pump core 1 through the ventilation hole 1011; the inner ring 1052 wraps the feed channel 1041.

[0026] In this embodiment, the piston 105 is made of rubber material. Since some contents (such as oil) are highly corrosive, the traditional plastic piston 105 is easily corroded.

[0027] In this embodiment, the elastic member 106 is a spring.

[0028] The secondary column 103 is snap-fitted with the milk outlet rod 104. A chamber 108 is formed between the secondary column 103 and the milk outlet rod 104. The inner ring 1052 is located in the chamber 108. When the pressing head cap 2 is pressed, the secondary column 103, the milk outlet rod 104, and the piston 105 will descend, the elastic member 106 is compressed, and the steel ball 107 leaves the feed port 1044. Since the outer ring 1051 of the piston 105 is in close contact with the inner wall of the main column 101, during the descending process of the piston 105, the relative distance between the piston 105 and the milk outlet rod 104 will change, that is, the position of the piston 105 relative to the milk outlet rod 104 will rise, and the inner ring 1052 no longer completely wraps the feed channel 1041, and the feed channel 1041 is opened. The material in the container will be pumped out of the container under the action of the pump core 1.

[0029] The main column 101 is snap-fitted with the lock cover 102. A first inclined surface 1021 is provided on the inner wall of the lock cover 102, and a second inclined surface 1031 is provided on the outer wall of the secondary column 103. The first inclined surface 1021 and the second inclined surface 1031 are adapted to each other and are snap-fitted to play a limiting role to prevent the secondary column 103 from falling off the lock cover 102 in the natural state; and the inclined surface type snap-fitting will make the sealing performance between the lock cover 102 and the secondary column 103 better.

[0030] A ladder platform 1042 is provided at the lower end of the milk outlet rod 104. Four fins 1043 are provided on the outer wall of the ladder platform 1042. The four fins 1043 are arranged at equal intervals, and the distance between two adjacent fins 1043 is 90°. A feed port 1044 is formed between two adjacent fins 1043, and the number of feed ports 1044 is also four.

[0031] The ladder platform 1042 is a hollow structure, and the internal hollow cavity is in a stepped shape, with the diameter decreasing sequentially from bottom to top. A first abutting surface 1045 is provided inside the ladder platform 1042, and a second abutting surface 1012 is provided inside the main column 101. One end surface of the elastic member 106 abuts against the first abutting surface 1045, and the other end surface abuts against the second abutting surface 1012.

[0032] The present utility model is an anti-corrosion cosmetic packaging plastic oil pump, and its working principle is described in conjunction with the accompanying drawings:

[0033] In the natural state, the outer ring 1051 blocks the air exchange hole 1011, so that even if the container is in an inclined or inverted state, the material will not enter the pump core 1 through the air exchange hole 1011.

[0034] When taking materials, when pressing the head cap 2, the secondary column 103, the milk discharging rod 104, and the piston 105 descend, the elastic member 106 is compressed, the steel ball 107 leaves the feed inlet 1044, the feed channel 1041 is opened, the outer ring 1051 leaves the air exchange hole 1011, and the air exchange hole 1011 can conduct normal air exchange. The materials in the container will also first pass through the main column 101, the milk discharging rod 104 (feed channel 1041), the secondary column 103, and finally be ejected from the head cap 2; under the action of the elastic member 106, the head cap 2, the secondary column 103, the milk discharging rod 104, and the piston 105 will reset, and the outer ring 1051 will block the air exchange hole 1011 again.

[0035] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. An anti-corrosion plastic oil pump for cosmetic packaging, characterized in that, It includes a pump core, a head cap and a middle section. The pump core is installed on the middle section, and the head cap is installed on the pump core. The pump core includes a main column, a lock cap, a sub-column, a milk outlet rod, a piston, an elastic member and a steel ball. A ventilation hole is provided at the top position of the main column. A feed channel penetrating the milk outlet rod is provided on the milk outlet rod. The piston is sleeved on the milk outlet rod and located at the inner top of the main column. The piston includes an outer ring and an inner ring of an integrated structure. The outer wall of the outer ring is closely attached to the inner wall of the main column to block the ventilation hole, and the inner ring wraps the feed channel.

2. The anti-corrosion cosmetic packaging plastic oil pump according to claim 1, characterized in that, The sub-column is in clamping fit with the milk outlet rod, and a chamber is formed between the sub-column and the milk outlet rod. The inner ring is located in the chamber.

3. The anti-corrosion cosmetic packaging plastic oil pump according to claim 1, characterized in that, The main column is in clamping fit with the lock cap. A first inclined surface is provided on the inner wall of the lock cap, and a second inclined surface is provided on the outer wall of the sub-column. The first inclined surface is adapted to the second inclined surface.

4. The anti-corrosion cosmetic packaging plastic oil pump according to claim 1, wherein, A stepped platform is provided at the lower end of the milk outlet rod. A plurality of fins are provided on the outer wall of the stepped platform, and a feed port is formed between two adjacent fins.

5. The anti-corrosion cosmetic packaging plastic oil pump according to claim 4, characterized in that, A first abutting surface is provided inside the stepped platform, and a second abutting surface is provided inside the main column. One end surface of the elastic member abuts against the first abutting surface, and the other end surface abuts against the second abutting surface.

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