Container check valve

Abstract

The embodiment of the application provides a container one-way valve, which comprises a valve body installed on a container body and a valve core movably arranged in the valve body; one end of the valve body is provided with a gas outlet, which faces the container body; the other end of the valve body is provided with a valve cover and a valve plate, and the valve cover and the valve plate are correspondingly provided with a gas inlet; the valve body is provided with a mounting seat, the valve core is movably installed on the mounting seat and can reciprocate towards the valve plate or away from the valve plate to close or open the gas inlet; a compression spring is connected between the mounting seat and the valve core, and the compression spring is used for applying an elastic force to the valve core to make the valve core close the gas inlet; when the container is in negative pressure, the one-way valve can be automatically opened under the action of the pressure difference to introduce external air and balance the internal and external pressures; when the internal and external pressures of the container are balanced, the one-way valve can be closed under the action of the compression spring to prevent external air from entering, effectively prevent external rainwater, sea water splashes or humid air from entering the container, and protect goods from moisture damage.

Description

Technical Field

[0001] This utility model relates to the field of internal air pressure regulation of containers, specifically to a container one-way valve. Background Technology

[0002] During transportation, containers may experience changes in the external environment, such as temperature and altitude, which can cause the internal air pressure of the container to be inconsistent with the external air pressure. For example, when sailing from a hot region to a cold region, the air inside the container cools and contracts, causing the internal air pressure to be significantly lower than the external atmospheric pressure (negative pressure). This huge negative pressure may damage the door seals or even deform the container. Utility Model Content

[0003] In view of this, an embodiment of the present invention provides a container check valve to solve the technical problem of container damage caused by pressure difference between the inside and outside of the container.

[0004] The container one-way valve provided in this embodiment includes a valve body installed on the container body and a valve core movably disposed within the valve body. One end of the valve body is provided with an air outlet facing into the container body. The other end of the valve body is provided with a valve cover and a valve plate. The valve cover is detachably connected to the valve body, and the valve plate is sandwiched between the valve body and the valve cover. The valve cover and the valve plate are respectively provided with air inlets. The valve body is provided with a mounting seat, and the valve core is movably mounted on the mounting seat and can reciprocate in a direction closer to or farther from the valve plate to close or open the air inlet; a compression spring is connected between the mounting seat and the valve core, and the compression spring is used to apply an elastic force to the valve core to close the air inlet.

[0005] Optionally, the air inlet is provided with a guide seat, and the two ends of the valve core are respectively movably inserted into the mounting base and the guide seat.

[0006] Optionally, the air inlet is provided with a ventilation mesh, the outer edge of which is sandwiched between the valve cover and the valve plate.

[0007] Optionally, the centerline of the air inlet and the centerline of the air outlet form an angle.

[0008] Optionally, a sealing ring is provided between the valve plate and the valve body.

[0009] Optionally, the valve core has a sealing gasket on the side facing the valve plate for sealing cooperation with the valve plate.

[0010] Optionally, a pressure plate is coaxially fixed to the side of the valve core facing the valve plate, and the sealing gasket is annular, with its inner edge sandwiched between the pressure plate and the valve core.

[0011] Optionally, baffles and nuts are fitted onto the outer wall of the valve body at opposite intervals, the baffles being fixedly connected to the valve body, and the nuts being threadedly connected to the valve body.

[0012] The present invention has the following beneficial effects: a one-way valve is installed on the container body. The one-way valve can automatically open under the action of air pressure difference when there is negative pressure inside the container, so as to introduce external air and balance the internal and external pressure. When the internal and external pressure of the container is balanced, the one-way valve can close under the action of compression spring to prevent external air from entering, thereby effectively preventing external rainwater, seawater splash or humid air from entering the container and protecting the goods from moisture damage. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a front view of an embodiment of the present utility model; Figure 2 This is a side view of an embodiment of the present utility model; Figure 3 This is a cross-sectional view of an embodiment of the present utility model; The numbers in the diagram represent: 1. Valve body; 2. Valve core; 3. Air outlet; 4. Valve cover; 5. Valve plate; 6. Air inlet; 7. Sealing ring; 8. Mounting seat; 9. Guide seat; 10. Compression spring; 11. Sealing gasket; 12. Pressure plate; 13. Vent mesh; 14. Baffle; 15. Nut. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0016] Please see Figures 1-3As shown, an embodiment of this utility model provides a container one-way valve, including a valve body 1 installed on a container body (not shown) and a valve core 2 movably disposed within the valve body 1. One end of the valve body 1 has an air outlet 3 facing into the container body; the other end of the valve body 1 is equipped with a valve cover 4 and a valve plate 5, with corresponding air inlets 6 on the valve cover 4 and valve plate 5. The valve cover 4 is detachably connected to the valve body 1 by bolts, snap-fit, or other means, while the valve plate 5 is sandwiched between the valve body 1 and the valve cover 4, and is pressed and fixed by the valve body 1 and the valve cover 4. Furthermore, a sealing ring 7 can be provided between the valve plate 5 and the valve body 1 to ensure a tight seal between them.

[0017] The valve body 1 is provided with a mounting seat 8, and the valve core 2 is movably mounted on the mounting seat 8 and can reciprocate in the direction of approaching or moving away from the valve plate 5 to close or open the air inlet 6. Furthermore, in order to ensure the stability and reliability of the movement of the valve core 2, a guide seat 9 can be provided at the air inlet 6, and the two ends of the valve core 2 can be movably passed through the mounting seat 8 and the guide seat 9 respectively (both the mounting seat 8 and the guide seat 9 are provided with corresponding through holes).

[0018] A compression spring 10 connects the mounting base 8 and the valve core 2. The compression spring 10 applies an elastic force to the valve core 2 to close the air inlet 6. When the internal and external pressures of the container are balanced, the valve core 2 can close the air inlet 6 under the action of the compression spring 10, preventing external air from entering and effectively preventing external rainwater, seawater splashes, or humid air from entering the container, protecting the goods from moisture damage. When the internal pressure of the container decreases and forms a negative pressure, the valve core 2 can overcome the elastic force of the compression spring 10 and move away from the valve plate 5 under the push of the external atmospheric pressure, thereby opening the air inlet 6 and balancing the internal and external pressures of the container. After the internal and external pressures are balanced, the valve core 2 can close the air inlet 6 again under the action of the compression spring 10, keeping the inside of the container sealed.

[0019] Furthermore, a sealing gasket 11 is provided on the side of the valve core 2 facing the valve plate 5 for sealing cooperation with the valve plate 5 to ensure the sealing effect of the air inlet 6. Specifically, in this embodiment of the present invention, a pressure plate 12 is coaxially fixed on the side of the valve core 2 facing the valve plate 5, the sealing gasket 11 is annular, and the inner edge of the sealing gasket 11 is sandwiched between the pressure plate 12 and the valve core 2, so that the sealing gasket 11 is pressed and fixed by the pressure plate 12 and the valve core 2.

[0020] Furthermore, the air inlet 6 is equipped with a ventilation mesh 13, the outer edge of which is sandwiched between the valve cover 4 and the valve plate 5. The valve cover 4 and the valve plate 5 press and fix the ventilation mesh 13. The ventilation mesh 13 can filter impurities in the air while ensuring smooth airflow, preventing debris such as leaves from entering the container.

[0021] Furthermore, the centerline of the air inlet 6 and the centerline of the air outlet 3 form an angle, that is, the air inlet 6 is inclined relative to the air outlet 3, so as to facilitate the discharge of condensate and prevent condensate from flowing into the box and causing the goods to get damp.

[0022] Furthermore, baffles 14 and nuts 15 are fitted onto the outer wall of valve body 1 at intervals and opposite to each other. Baffles 14 are fixedly connected to valve body 1 (they can be directly integrally formed with valve body 1), and nuts 15 are threadedly connected to valve body 1, allowing nuts 15 to move towards or away from baffles 14. After removing nuts 15, valve body 1 is inserted into the pre-drilled mounting hole on the container body (with the air outlet 3 facing the inside of the container), so that baffles 14 abut against one side of the container body. Then, nuts 15 are installed and tightened from the other side of the container body, thus fixing valve body 1 to the container body. This makes installation and removal convenient.

[0023] This article uses specific examples to illustrate the principles and implementation methods of this utility model. The description of the above embodiments is only for the purpose of helping to understand the technical solutions and core ideas of this utility model. Those skilled in the art should understand that they can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. However, these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A container check valve, comprising a valve body mounted on a container body and a valve core movably disposed within the valve body, characterized in that: One end of the valve body is provided with an air outlet facing the inside of the container; the other end of the valve body is equipped with a valve cover and a valve plate, the valve cover is detachably connected to the valve body, the valve plate is sandwiched between the valve body and the valve cover, and the valve cover and the valve plate are respectively provided with air inlets; The valve body is provided with a mounting seat, and the valve core is movably mounted on the mounting seat and can reciprocate in a direction closer to or farther from the valve plate to close or open the air inlet; a compression spring is connected between the mounting seat and the valve core, and the compression spring is used to apply an elastic force to the valve core to close the air inlet.

2. The container check valve according to claim 1, characterized in that: The air inlet is provided with a guide seat, and the two ends of the valve core are respectively movably inserted into the mounting base and the guide seat.

3. The container check valve according to claim 1, characterized in that: The air inlet is provided with a ventilation mesh, and the outer edge of the ventilation mesh is sandwiched between the valve cover and the valve plate.

4. The container check valve according to claim 1, characterized in that: There is an angle between the centerline of the air inlet and the centerline of the air outlet.

5. The container check valve according to claim 1, characterized in that: A sealing ring is provided between the valve plate and the valve body.

6. The container check valve according to claim 1, characterized in that: The valve core has a sealing gasket on the side facing the valve plate for sealing cooperation with the valve plate.

7. The container check valve according to claim 6, characterized in that: A pressure plate is coaxially fixed to the side of the valve core facing the valve plate. The sealing gasket is annular, and its inner edge is sandwiched between the pressure plate and the valve core.

8. The container check valve according to claim 1, characterized in that: The outer wall of the valve body is fitted with baffles and nuts that are opposite to each other and spaced apart. The baffles are fixedly connected to the valve body, and the nuts are threadedly connected to the valve body.

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