Pen tube with pressure relief device

Abstract

The utility model discloses a pen tube with pressure relief device, including pen tube, the pen tube top is equipped with the pipe orifice, the pipe orifice is equipped with pressure relief rubber plug, the pressure relief rubber plug includes the rubber plug main part of tubulose, the rubber plug main part is equipped with the reinforced inner wall layer, the reinforced inner wall layer inner wall bottom side is connected with waterproof air permeable membrane, is equipped with a plurality of air holes on waterproof air permeable membrane, the reinforced inner wall layer is wrapped with rubber outer wall layer, the rubber outer wall layer top is equipped with the encryption sheet, is equipped with one -way pressure relief device on the encryption sheet, corresponding one -way pressure relief device is equipped with rubber plug top cover in the encryption sheet top, rubber plug top cover top is equipped with the pass -through mouth. The utility model discloses simple structure, convenient and practical, and can release gas from the one -way of pen tube inside to pen tube outside to reduce the air pressure intensity in the pen tube inside.

Description

Technical Field

[0001] This utility model relates to the field of pen tube device technology, and in particular to a pen tube with a pressure relief device. Background Technology

[0002] Some materials containing hydrogen peroxide are prone to expansion during storage and transportation due to the slow and continuous decomposition of hydrogen peroxide, which generates gas pressure. This can cause deformation of the filling material or even damage its seal. For example, when a tooth whitening gel containing hydrogen peroxide is stored in a pen tube and sealed with a rubber stopper, the gel will expand due to the slow and continuous decomposition of hydrogen peroxide during storage and transportation. This expansion will gradually push the rubber stopper to move until it pops out, resulting in problems such as loss of product seal and product failure.

[0003] To solve the above problems, a pressure relief port can be designed on the sealing rubber plug. Therefore, this utility model proposes a pen tube with a pressure relief device. Utility Model Content

[0004] This invention aims to at least partially solve one of the technical problems in the related art. Therefore, one objective of this invention is to provide a pen tube with a pressure relief device that is simple in structure, convenient and practical, and capable of releasing gas unidirectionally from inside the pen tube to the outside, thereby reducing the internal air pressure of the pen tube.

[0005] The technical solution is as follows: A pen tube with a pressure relief device includes a pen tube with an opening at the top. A pressure relief rubber plug is provided at the opening. The pressure relief rubber plug includes a tubular rubber plug body, which includes a reinforced inner wall layer. A waterproof and breathable membrane is connected to the bottom side of the inner wall of the reinforced inner wall layer. The waterproof and breathable membrane has several vent holes. A rubber outer wall layer is wrapped around the reinforced inner wall layer. A reinforced sheet is provided at the top of the rubber outer wall layer. A one-way venting device is provided on the reinforced sheet. A rubber plug cap is provided at the top of the reinforced sheet corresponding to the one-way venting device. The top of the rubber plug cap has an opening.

[0006] Furthermore, the reinforced inner wall layer is made of plastic.

[0007] Furthermore, the diameter of the encryption sheet is larger than the diameter of the rubber outer wall layer.

[0008] Furthermore, the one-way venting device includes a movable plug and a corresponding movable opening on the encryption plate.

[0009] Furthermore, the movable plug includes a plug post, the plug post having a cross-shaped movable groove, and a cross-shaped limiting rod corresponding to the movable groove having a movable opening. The diameter of the movable opening is larger than the diameter of the plug post, and a sealing plate is provided at the top of the plug post. The diameter of the sealing plate is larger than the diameter of the movable opening, and the movable groove extends to the sealing plate.

[0010] The beneficial effects of this utility model are as follows: By setting a one-way pressure relief hole in the rubber stopper, the gas pressure inside the pen tube can be released one-way towards the outside of the pen tube, so that the gas pressure inside the pen tube will not be high enough to damage the overall sealing of the pen tube, thus effectively improving the practicality of this utility model. Attached Figure Description

[0011] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the structure of this utility model.

[0012] Figure 2 This is a cross-sectional structural diagram of the pressure relief rubber plug in this utility model.

[0013] Figure 3 This is a schematic diagram of the structure of the top cover of the pressure relief rubber plug in this utility model.

[0014] Figure 4 This is a schematic diagram of the movable plug in the pressure relief rubber plug of this utility model.

[0015] In the diagram: 1. Rubber stopper body; 2. Encryption sheet; 3. Rubber stopper top cover; 4. Waterproof and breathable membrane; 5. Movable stopper; 101. Reinforced inner wall layer; 201. Movable opening; 301. Through opening; 501. Movable groove; 502. Sealing plate. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0017] Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0018] Please see Figures 1 to 4As shown, a pen tube with a pressure relief device includes a pen tube with an opening at the top and a pressure relief rubber plug at the opening. The pressure relief rubber plug includes a tubular rubber plug body 1, which includes a reinforced inner wall layer 101 made of plastic. A waterproof and breathable membrane 4 is connected to the bottom side of the inner wall of the reinforced inner wall layer 101. The waterproof and breathable membrane 4 has several vent holes. The reinforced inner wall layer 101 is wrapped with a rubber outer wall layer.

[0019] According to the above solution, this utility model provides a waterproof and breathable membrane 4 with vent holes on the bottom inner wall of the pressure relief stopper. This not only effectively prevents the colloid inside the pen tube from being squeezed and flowing into the pressure relief stopper, thus affecting its pressure relief capacity, but also allows the gas inside the colloid to be slowly released into the pressure relief stopper at the top of the waterproof and breathable membrane 4 through its breathability, thereby releasing gas pressure from the pressure relief stopper towards the outside of the pen tube.

[0020] The reinforced inner wall layer 101, made of plastic, has higher hardness and strength, and can better support the waterproof and breathable membrane 4, so that the waterproof and breathable membrane 4 can seal the colloid inside the pen tube at the bottom of the pressure relief plug.

[0021] The sealing plug at the top of the pen tube is equipped with a pressure relief device, which allows the pen tube to release the internal gas pressure in one direction towards the outside of the pen tube, so as to prevent the pen tube from losing its seal due to the expansion of internal gas pressure.

[0022] like Figures 2 to 4 The top of the rubber outer wall layer is provided with a reinforcement plate 2, the diameter of which is larger than that of the rubber outer wall layer. The reinforcement plate 2 is provided with a one-way venting device, which includes a movable plug 5 and a corresponding movable opening 201 on the reinforcement plate 2. The movable plug 5 includes a plug post, and the plug post has a cross-shaped movable groove 501. A cross-shaped limiting rod is provided in the movable opening 201, corresponding to the movable groove 501. The diameter of the movable opening 201 is larger than that of the plug post. The top of the plug post is provided with a sealing plate 502, the diameter of which is larger than that of the movable opening 201. The movable groove 501 extends to the sealing plate 502. A rubber stopper top cover 3 is provided on the top of the reinforcement plate 2, corresponding to the one-way venting device. The top of the rubber stopper top cover 3 has a through opening 301.

[0023] According to the above scheme, the encryption piece 2 in this utility model can further enhance the sealing performance at the connection between the pressure relief plug and the pipe opening.

[0024] The arrangement of the movable plug 5 and the movable port 201 enables the one-way ventilation function of the pressure relief plug: when the gas in the rubber body is released through the waterproof and breathable membrane 4 to the inner cavity of the pressure relief plug at the top of the waterproof and breathable membrane 4, the gas squeezes and pushes the sealing plate 502 and causes the movable plug 5 to slide upward in the movable port 201. Therefore, the gas can be released to the outside of the pen tube through the gap between the plug and the movable port 201, thereby playing the role of pressure relief.

[0025] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A pen tube with a pressure relief device, comprising a pen tube, wherein the top of the pen tube is provided with a nozzle, characterized in that: The pipe opening is provided with a pressure relief rubber plug, which includes a tubular rubber plug body. The rubber plug body includes a reinforced inner wall layer. A waterproof and breathable membrane is connected to the bottom side of the inner wall of the reinforced inner wall layer. The waterproof and breathable membrane has several vent holes. The reinforced inner wall layer is wrapped with a rubber outer wall layer. A densifying sheet is provided at the top of the rubber outer wall layer. A one-way venting device is provided on the densifying sheet. Corresponding to the one-way venting device, a rubber plug top cover is provided at the top of the densifying sheet. The top of the rubber plug top cover has an opening.

2. The pen tube with a pressure relief device according to claim 1, characterized in that: The reinforced inner wall layer is made of plastic.

3. The pen tube with a pressure relief device according to claim 1, characterized in that: The diameter of the encryption sheet is larger than the diameter of the rubber outer wall layer.

4. The pen tube with a pressure relief device according to claim 1, characterized in that: The one-way venting device includes a movable plug and a corresponding movable opening on the encryption plate.

5. The pen tube with a pressure relief device according to claim 4, characterized in that: The movable plug includes a plug post, the plug post having a cross-shaped movable groove, and a cross-shaped limiting rod corresponding to the movable groove having a movable opening. The diameter of the movable opening is larger than the diameter of the plug post, and a sealing plate is provided at the top of the plug post. The diameter of the sealing plate is larger than the diameter of the movable opening, and the movable groove extends to the sealing plate.

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