Desiccant replacement device and packing box

Abstract

An embodiment of the present invention discloses a desiccant replacement device and a packaging box, wherein the desiccant replacement device includes: an airtight one-way valve assembly and a desiccant storage assembly; the airtight one-way valve assembly is connected to the bottom opening of the mounting hole seat, the airtight one-way valve assembly is provided with a first gas channel that can be opened and closed, and the first gas channel is connected to the interior of the box; the desiccant storage assembly is provided with a desiccant storage space and a second gas channel connected to the desiccant storage space, the desiccant storage assembly is inserted into the airtight one-way valve assembly through the opening at the top of the mounting hole seat, and the bottom is detachably connected to the airtight one-way valve assembly, and the first gas channel is opened to connect the first gas channel and the second gas channel. The device is easy to operate and has a simple structure. It can replace the desiccant in the desiccant box on the box and pressurize the box without depressurizing the packaging box.

Description

Technical Field

[0001] The present invention relates to the field of airtight boxes, and in particular to a desiccant replacement device and a packaging box. Background Art

[0002] With the promotion of the concept of full system lifespan of weapons and equipment and the concept of rapid response operations, in the late 1990s, mines developed in my country were all stored and transported in integral packaging boxes filled with nitrogen. These integral packaging boxes can greatly enhance the ability of stored mines to resist various external environmental factors and extend the storage lifespan of stored mines. They also facilitate the operation and use of the equipment by troops in warehouses or technical positions.

[0003] The packaging box is fully nitrogen-filled throughout its service life. A port for installing a desiccant cartridge is located on the box, allowing easy observation of the desiccant's color. After a period of use, the desiccant must be replaced when it reaches its moisture absorption rate, meaning the desiccant granules change color from blue to red. Currently, when replacing desiccant in warehouses, the entire packaging box must be depressurized, the desiccant cartridge removed, and then replaced. The box must then be refilled with nitrogen. This entire process requires manual inflation and degassing using tools, and large volumes of nitrogen are required, making the filling and degassing process time-consuming, labor-intensive, and costly.

[0004] There is currently no effective solution to the problem in the prior art that the desiccant cannot be replaced without depressurizing the packaging box. Summary of the Invention

[0005] To solve the above problems, the present invention provides a desiccant replacement device and a packaging box. Through the cooperation of an airtight one-way valve assembly and a desiccant storage assembly, the purpose of replacing the desiccant without depressurizing the packaging box is achieved. That is, when the desiccant storage assembly is inserted into the airtight one-way valve assembly, the first gas channel and the second gas channel are connected, so that the gas inside the box enters the desiccant storage space in the desiccant storage assembly to complete the gas drying; after the desiccant storage assembly is withdrawn, the first gas channel is closed to ensure the sealing of the interior of the box, thereby solving the problem in the prior art that the desiccant cannot be replaced without depressurizing the packaging box.

[0006] To achieve the above-mentioned object, the present invention provides a desiccant replacement device, which is arranged on the mounting hole seat of the box body and includes:

[0007] An airtight one-way valve assembly and a desiccant storage assembly; the airtight one-way valve assembly is connected to the bottom opening of the mounting hole seat, the airtight one-way valve assembly is provided with a first gas channel that can be opened and closed, and the first gas channel is connected to the interior of the box body; the desiccant storage assembly is provided with a desiccant accommodating space and a second gas channel connected to the desiccant accommodating space, the desiccant storage assembly is inserted into the airtight one-way valve assembly from the opening at the top of the mounting hole seat, and the bottom is detachably connected to the airtight one-way valve assembly, and the first gas channel is opened at the same time to connect the first gas channel and the second gas channel.

[0008] Further optionally, the airtight one-way valve assembly includes: a sleeve, a nut and a rubber pad; the sleeve is sealedly connected to the bottom opening of the mounting hole seat, the sleeve is hollow, the top is open, and a through hole is provided at the bottom; the inner wall of the nut is sealedly connected to the outer wall of the sleeve near the bottom, and the nut is provided with an opening connected to the interior of the box; a rubber pad accommodating space is provided inside the nut, and the rubber pad is arranged in the rubber pad accommodating space for moving in the vertical direction under the action of internal and external air pressure to open and close the through hole; the first gas channel is a gas channel composed of the opening of the nut, the rubber pad accommodating space, the through hole, the hollow inner cavity of the sleeve and the top opening.

[0009] Further optionally, the screw sleeve includes a main body and a fixing portion protruding outward from the main body near the top; the side wall of the main body is connected to the bottom opening of the mounting hole seat; and the fixing portion is clamped on both sides of the bottom opening of the mounting hole seat.

[0010] Further optionally, a first sealing ring is provided between the fixing portion and the bottom surface of the mounting hole seat.

[0011] Further optionally, the desiccant storage assembly includes: an observation cover, a screw plug and a cover plate; a desiccant accommodating space is provided inside the observation cover; the screw plug is sleeved on the outside of the observation cover; the cover plate includes a connecting portion and a plug-in portion extending from the connecting portion to one side, the connecting portion is sealed with the screw plug, the plug-in portion is used to insert the through hole from the open side of the screw sleeve, pressing the rubber pad against the bottom of the nut, the second gas channel is opened in the vertical direction inside the cover plate, and an opening is opened on the side wall of the cover plate near the bottom end.

[0012] Further optionally, a second sealing ring is provided between the observation cover and the screw plug.

[0013] Further optionally, a sealing gasket is provided on the contact surface between the observation cover and the cover plate, and on the contact surface between the screw plug and the cover plate.

[0014] Further optionally, the observation cover is a transparent structure.

[0015] Further optionally, the inner wall of the screw sleeve is provided with a thread for cooperating with the external thread of the inflation device or the external thread of the screw plug.

[0016] On the other hand, the present invention further provides a packaging box comprising the above-mentioned desiccant replacement device.

[0017] The above technical solution has the following beneficial effects: the present invention provides a device that is easy to operate, simple in structure, and can replace the desiccant in the desiccant box on the box body and pressurize the box body without depressurizing the packaging box, thereby improving the efficiency of desiccant replacement and saving manpower. In addition, the device can realize multiple functions such as inflation and drying, thereby improving universality. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 1 is a schematic structural diagram of a desiccant replacement device provided in an embodiment of the present invention;

[0020] Figure 2 1 is a schematic structural diagram of an airtight one-way valve assembly provided by an embodiment of the present invention;

[0021] Figure 3 It is a structural schematic diagram of a desiccant storage assembly provided by an embodiment of the present invention.

[0022] Reference numerals: 1 - airtight one-way valve assembly 101 - screw sleeve 102 - nut 103 - rubber pad 104 - first sealing ring 2 - desiccant storage assembly 201 - observation cover 202 - screw plug 203 - cover plate 204 - second sealing ring 205 - sealing pad 3 - mounting hole seat 4 - third sealing ring DETAILED DESCRIPTION

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] In order to achieve the purpose of completing the desiccant replacement in the packaging box without depressurizing, the embodiment of the present invention provides a desiccant replacement device, which is arranged on the mounting hole seat 3 of the box body. Figure 1 Schematic diagram of the structure of the desiccant replacement device provided by the embodiment of the present invention. Figure 1 As shown, the device includes:

[0025] An airtight one-way valve assembly 1 and a desiccant storage assembly 2; the airtight one-way valve assembly 1 is connected to the bottom opening of the mounting hole seat 3, and the airtight one-way valve assembly is provided with a first gas channel that can be opened and closed, and the first gas channel is connected to the interior of the box; the desiccant storage assembly 2 is provided with a desiccant accommodating space and a second gas channel connected to the desiccant accommodating space, the desiccant storage assembly 2 is inserted into the airtight one-way valve assembly 1 from the opening at the top of the mounting hole seat 3, and the bottom is detachably connected to the airtight one-way valve assembly 1, and the first gas channel is opened at the same time to connect the first gas channel and the second gas channel.

[0026] See also Figure 1 The packaging box includes a mounting hole seat 3, which is used to communicate with the outside. The interior of the mounting hole seat 3 is a cavity, the top is completely open, and the bottom has a small opening, and the bottom opening is connected to the interior of the box.

[0027] The airtight one-way valve assembly 1 is connected to the bottom opening of the mounting hole 3 and defines a first gas passage. The first gas passage communicates with the interior of the box and has two states: open and closed. When no other components are installed, the first gas passage is closed to prevent gas from escaping the box.

[0028] A desiccant storage space and a first gas channel are provided inside the desiccant storage component 2. The desiccant storage space is used to prevent the desiccant box from leaking. The first gas channel is connected to the desiccant storage space. When the desiccant storage component 2 is inserted into the airtight one-way valve component 1, the first gas channel is opened. At this time, the first gas channel is connected to the second gas channel, so that the gas inside the condensate enters the desiccant storage space in the desiccant storage component 2 along the first gas channel and the second gas channel, completing the gas drying. When the gas drying is completed, the desiccant storage component 2 is separated from the airtight one-way valve component 1. At this time, the first gas channel is closed to prevent the gas inside the box from overflowing.

[0029] By means of the above device, the purpose of replacing the desiccant in the packaging box can be achieved without releasing the pressure.

[0030] As an optional implementation, Figure 2This is a structural schematic diagram of the airtight one-way valve assembly 1 provided by an embodiment of the present invention. The airtight one-way valve assembly 1 includes: a sleeve 101, a nut 102 and a rubber pad 103; the sleeve 101 is sealedly connected to the bottom opening of the mounting hole seat 3, the sleeve 101 is hollow, the top is open, and a through hole is provided at the bottom; the inner wall of the nut 102 is sealedly connected to the outer wall of the sleeve 101 near the bottom, and an opening is provided on the nut 102, which is connected to the interior of the box; a rubber pad 103 accommodating space is provided inside the nut 102, and the rubber pad 103 is arranged in the rubber pad 103 accommodating space, and is used to move in the vertical direction under the action of internal and external air pressure to open and close the through hole; the first gas channel is a gas channel composed of the opening of the nut 102, the rubber pad 103 accommodating space, the through hole, the hollow inner cavity of the sleeve 101 and the top opening.

[0031] See also Figure 2 The airtight one-way valve assembly 1 includes a screw sleeve 101, a nut 102, and a rubber pad 103. The screw sleeve 101 is connected to the mounting hole seat 3. Specifically, the outer wall of the screw sleeve 101 near the top is connected to the bottom opening of the mounting hole seat 3, and the part of the screw sleeve 101 near the bottom passes through the bottom opening of the mounting hole seat 3 and is suspended inside the box.

[0032] As an optional embodiment, the screw sleeve 101 and the mounting hole seat 3 can be fixedly connected or detachably connected. For example, if the screw sleeve 101 and the mounting hole seat 3 are fixedly connected, welding can be used; if the screw sleeve 101 and the mounting hole seat 3 are fixedly connected, an external thread can be provided on the outside of the screw sleeve 101, and an internal thread can be provided on the inner wall of the bottom opening of the mounting hole seat 3, and the two can cooperate to complete the connection between the screw sleeve 101 and the mounting hole seat 3.

[0033] The screw sleeve 101 is hollow, with a completely open top and a through hole at the bottom. The hollow inner cavity is used for inserting and connecting the desiccant storage assembly 2 .

[0034] Nut 102 is arranged on the bottom of screw sleeve 101 and is connected with the part of screw sleeve 101 hanging outside the mounting hole seat 3. Specifically, the inner wall of nut 102 near the top is connected with the outer wall of screw sleeve 101 near the bottom.

[0035] As an optional embodiment, the screw sleeve 101 and the nut 102 can be fixedly connected or detachably connected. For example, if the screw sleeve 101 and the nut 102 are fixedly connected, welding can be used; if the screw sleeve 101 and the nut 102 are fixedly connected, external threads can be provided on the outside of the screw sleeve 101, and internal threads can be provided on the inner wall of the nut 102, and the two threads can cooperate to complete the connection between the screw sleeve 101 and the nut 102.

[0036] The nut 102 is also provided with an opening for communicating with the interior of the box.

[0037] As an alternative embodiment, the sidewall of nut 102 is provided with an annular opening, and the bottom of nut 102 is provided with a small opening. When rubber pad 103 blocks the through-hole at the bottom of screw sleeve 101, the side surface of rubber pad 103 simultaneously blocks the annular opening on the sidewall of nut 102. The small opening at the bottom of nut 102 ensures that when the internal air pressure of the box is high, the gas vertically presses the rubber pad 103 against the through-hole at the lower end surface of screw sleeve 101.

[0038] After the screw sleeve 101 and the nut 102 are connected, there is a space for accommodating the rubber pad 103 between the inner bottom surface of the nut 102 and the outer bottom surface of the screw sleeve 101, and the rubber pad 103 is provided in the space. When other components are not installed, since the air pressure inside the box is greater than the external air pressure, the rubber pad 103 will be pressed on the through hole of the screw sleeve 101 to prevent the gas inside the box from overflowing through the through hole; when the inner cavity of the screw sleeve 101 is installed with an inflation device, the gas generated by the inflation device presses the rubber pad 103 against the inner bottom surface of the nut 102, so that the gas enters the box through the through hole of the screw sleeve 101 and the annular opening on the side wall of the nut 102, until the inflation of the box is completed and the air pressure inside the box reaches a certain value, the rubber pad 103 is pressed to the bottom of the screw sleeve 101 again. The bottom of the screw sleeve 101 is blocked to block the through hole at the bottom of the screw sleeve 101, thereby completing the inflation; when the desiccant storage component 2 is installed in the inner cavity of the screw sleeve 101, the bottom of the desiccant storage component 2 passes through the through hole at the bottom of the screw sleeve 101 to press the rubber pad 103 to the inner bottom surface of the nut 102, so that the second gas channel of the desiccant storage component 2 is connected with the first gas channel of the airtight one-way valve assembly 1, and the gas inside the box passes through the annular opening on the side wall of the nut 102 and the accommodating space of the rubber pad 103, enters the second gas channel, and then contacts the desiccant in the desiccant storage component 2 to complete the gas drying.

[0039] As an optional implementation, Figure 2 As shown, the screw sleeve 101 includes a main body and a fixing portion protruding outward from the main body near the top; the side wall of the main body is connected to the bottom opening of the mounting hole seat 3; the fixing portion is clamped on both sides of the bottom opening of the mounting hole seat 3.

[0040] The screw sleeve 101 includes a main body and a fixing part. The main body is a cylindrical structure, and its outer side wall is connected to the bottom opening of the mounting hole seat 3. The fixing part is clamped on both sides of the opening to prevent air leakage caused by loose installation of the main body and the mounting hole seat 3.

[0041] As an optional implementation, a first sealing ring 104 is provided between the fixing portion and the bottom surface of the mounting hole seat 3 .

[0042] like Figure 3As shown, a first sealing ring 104 is provided between the bottom surface of the fixing portion and the inner bottom surface of the mounting hole seat 3 to further achieve sealing between the mounting portion and the screw sleeve 101 and improve the overall sealing performance.

[0043] As an optional implementation, Figure 3 Schematic diagram of the structure of the desiccant storage component 2 provided in an embodiment of the present invention. Figure 3 As shown, the desiccant storage assembly 2 includes: an observation cover 201, a screw plug 202 and a cover plate 203; a desiccant accommodating space is provided inside the observation cover 201; the screw plug 202 is sleeved on the outside of the observation cover 201; the cover plate 203 includes a connecting portion and a plug-in portion extending from the connecting portion to one side, the connecting portion is sealedly connected to the screw plug 202, the plug-in portion is used to insert the through hole from the open side of the screw sleeve 101, and press the rubber pad 103 on the bottom of the nut 102, the second gas channel is opened in the vertical direction inside the cover plate 203, and the side wall of the cover plate 203 near the bottom end is opened with an opening.

[0044] See also Figure 3 The desiccant storage assembly 2 includes an observation cover 201 , a screw plug 202 and a cover plate 203 .

[0045] The observation cover 201 is an arched structure, the tail end of the arched structure extends outward, and a desiccant accommodating space is provided inside, which can be used to fix a desiccant box containing the desiccant.

[0046] The screw plug 202 is sleeved on the outside of the observation cover 201 , the inner top surface of the screw plug 202 is pressed against the top surface of the extended portion of the observation cover 201 , and the inner side wall is connected to the cover plate 203 .

[0047] The cover plate 203 includes a connecting portion and a plug-in portion, wherein the connecting portion is stepped near the top and is used to cooperate with the screw plug 202 for a sealed connection. The plug-in portion extends vertically outward from the bottom surface of the connecting portion, and the bottom end of the cover plate 203 can pass through the through hole at the bottom of the screw sleeve 101. The bottom end of the cover plate 203 is provided with an annular opening. When the bottom end of the cover plate 203 is inserted into the nut 102, the rubber pad 103 is pressed to the inner bottom surface of the nut 102. At this time, the gas inside the box enters the second gas channel through the annular opening of the nut 102 and the annular opening at the bottom end of the cover plate 203, and then reacts with the desiccant in the observation cover 201 to complete the gas drying.

[0048] As an optional implementation, a second sealing ring 204 is provided between the observation cover 201 and the screw plug 202 .

[0049] See also Figure 3 A second sealing ring 204 is provided between the inner top surface of the screw plug 202 and the top surface of the extended portion of the observation cover 201.

[0050] As an optional embodiment, a sealing gasket 205 is provided on the contact surface between the observation cover 201 and the cover plate 203 and on the contact surface between the screw plug 202 and the cover plate 203 .

[0051] See also Figure 3 The connection part of the cover plate 203 is stepped near the top, and sealing gaskets 205 are respectively provided at the top of the two steps, which are sealed with the observation cover 201 and the screw plug 202 respectively to improve the overall sealing performance.

[0052] As an optional implementation, the observation cover 201 is a transparent structure.

[0053] The observation cover 201 should be a transparent structure to facilitate observation of the state of the desiccant inside, and the transparency should be high. When the color of the desiccant changes, it can be considered that the gas drying is completed, and the desiccant storage component 2 can be removed and the desiccant therein replaced.

[0054] As an optional implementation, to further improve the sealing performance, see Figure 1 A third sealing ring 4 is provided between the contact surface of the cover plate 203 and the screw sleeve 101 .

[0055] As an optional embodiment, the inner wall of the screw sleeve 101 is provided with a thread for cooperating with the external thread of the inflation device or the external thread of the screw plug 202 .

[0056] An embodiment of the present invention further provides a packaging box, comprising the above-mentioned desiccant replacement device.

[0057] After using the device in this embodiment, the implementation process of the desiccant replacement device is as follows:

[0058] After the desiccant storage assembly is loaded with desiccant of the appropriate moisture absorption rate, a third sealing ring is inserted into the lower end of the cover plate. The cover plate is then threaded into the housing mounting socket via the external threaded plug. The lower portion of the cover plate on the desiccant storage assembly passes through the sleeve and into the nut, pressing the rubber gasket against the inner bottom surface of the nut. This allows the through-hole in the nut, which connects to the housing, to connect with the desiccant storage assembly, allowing air inside the housing to enter the desiccant storage assembly, drying the air in real time. When the desiccant inside the assembly changes color as observed through the cover, the assembly can be removed from the housing mounting socket using a dedicated tool through the threaded hole in the sleeve. Since the pressure inside the housing is greater than the external pressure, the rubber gasket in the nut is pressed against the lower end of the sleeve, sealing the through-hole in the nut, preventing pressure relief. After replacing the desiccant, screw the desiccant storage assembly back into the housing mounting socket to complete the drying process.

[0059] The above technical solution has the following beneficial effects: the present invention provides a device that is easy to operate, simple in structure, and can replace the desiccant in the desiccant box on the box body and pressurize the box body without depressurizing the packaging box, thereby improving the efficiency of desiccant replacement and saving manpower. In addition, the device can realize multiple functions such as inflation and drying, thereby improving universality.

[0060] The specific implementation methods of the above inventions further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above content is only the specific implementation methods of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A desiccant replacement device, provided on the mounting hole seat of the box, characterized in that: include: Airtight one-way valve assembly and desiccant storage assembly; The airtight one-way valve assembly is connected to the bottom opening of the mounting hole seat, and the airtight one-way valve assembly is provided with a first gas passage that can be opened and closed, and the first gas passage is connected to the interior of the box; The desiccant storage assembly is provided with a desiccant accommodating space and a second gas passage communicating with the desiccant accommodating space. The desiccant storage assembly is inserted into the airtight one-way valve assembly through the opening at the top of the mounting hole seat, and the bottom is detachably connected to the airtight one-way valve assembly. At the same time, the first gas passage is opened to communicate with the second gas passage. The airtight one-way valve assembly includes: a screw sleeve, a nut and a rubber gasket; The screw sleeve is sealed and connected to the bottom opening of the mounting hole seat. The screw sleeve is hollow, with an opening at the top and a through hole at the bottom. The inner wall of the nut is sealed with the outer wall of the nut sleeve near the bottom, and the nut is provided with an opening connected to the interior of the box; A rubber pad accommodating space is defined inside the nut, and the rubber pad is disposed in the rubber pad accommodating space and is configured to move vertically under the action of internal and external air pressure to open and close the through hole; The first gas passage is a gas passage composed of the opening of the nut, the rubber pad accommodating space, the through hole, the hollow inner cavity of the screw sleeve and the top opening.

2. The desiccant replacement device according to claim 1, characterized in that: The screw sleeve includes a main body and a fixing portion protruding outward from the main body near the top; The side wall of the main body is connected to the bottom opening of the mounting hole seat; The fixing portion is clamped on both sides of the bottom opening of the mounting hole seat.

3. The desiccant replacement device according to claim 2, characterized in that: A first sealing ring is provided between the fixing portion and the bottom surface of the mounting hole seat.

4. The desiccant replacement device according to claim 1, characterized in that: The desiccant storage assembly comprises: Observation cover, screw plug and cover plate; A desiccant accommodating space is provided inside the observation cover; The screw plug is sleeved on the outside of the observation cover; The cover plate includes a connecting portion and an inserting portion extending from the connecting portion to one side, the connecting portion is sealed with the screw plug, the inserting portion is used to insert the through hole from the open side of the screw sleeve, pressing the rubber pad on the bottom of the nut, the second gas channel is opened in the vertical direction inside the cover plate, and the side wall of the cover plate near the bottom end is opened.

5. The desiccant replacement device according to claim 4, characterized in that: A second sealing ring is provided between the observation cover and the screw plug.

6. The desiccant replacement device according to claim 4, characterized in that: The contact surface between the observation cover and the cover plate, and the contact surface between the screw plug and the cover plate are respectively provided with sealing gaskets.

7. The desiccant replacement device according to claim 4, characterized in that: The observation cover is a transparent structure.

8. The desiccant replacement device according to claim 4, characterized in that: The inner wall of the screw sleeve is provided with a thread for cooperating with the external thread of the inflation device or the external thread of the screw plug.

9. A packaging box, characterized in that: The desiccant replacement device comprises the desiccant replacement device according to any one of claims 1 to 8.

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