Hafnium oxide powder storage tank with moisture-proof storage function

Abstract

This utility model relates to the field of hafnium oxide powder storage technology, and more particularly to a hafnium oxide powder storage container with moisture-proof storage function, including a sealing component, a cylindrical tube, and a placement component. The upper part of the container body and the upper part of the lid are provided with mutually pressing sealing components. After the sealing components are screwed onto the container body and lid, an inner sealing cavity is formed. A cylindrical tube is connected to the middle of the lid, and a placement component for placing desiccant is screwed onto the cylindrical tube. This storage container solves the core defect of passive moisture prevention in traditional devices through the coordinated design of the sealing component and the air extraction component. In the sealing component, when the lid is screwed on, the frustum-shaped structure of the isolation ring compresses the annular air bladder on the fixing ring, causing it to deform and fit tightly against the isolation ring. Compared with traditional single thread or sealing ring seals, this significantly increases the sealing contact area, forming a tight inner sealing cavity that effectively blocks the intrusion of external moisture.

Description

Technical Field

[0001] This utility model relates to the field of hafnium oxide powder storage technology, and in particular to a hafnium oxide powder storage container with moisture-proof storage function. Background Technology

[0002] Hafnium oxide powder, as a functional material with a high melting point and high dielectric constant, is widely used in high-end fields such as semiconductor devices, high-temperature ceramics, and optical coatings. Its performance stability is highly dependent on the dryness of the storage environment. Due to the strong hygroscopic nature of hafnium oxide powder, it readily adsorbs water vapor from the air, forming hydroxyl groups or hydrates. This leads to powder agglomeration, reduced flowability, and affects the accuracy of subsequent molding and processing. In the semiconductor field, moisture-absorbing powder can introduce impurities and defects, reducing the dielectric performance and lifespan of devices. In high-temperature ceramic sintering, excessive moisture content can cause uneven sintering shrinkage and increased porosity, severely restricting product quality.

[0003] Traditional storage containers typically use a single thread or sealing ring for sealing, resulting in limited sealing area and only passively isolating external moisture. Internal moisture control relies primarily on desiccants, which have limited absorption capacity and require frequent replacement. Furthermore, long-term storage still suffers from slow moisture absorption. In summary, existing devices are insufficient to solve the problem of powder moisture absorption. Therefore, it is necessary to design a hafnium oxide powder storage container with moisture-proof storage capabilities, which is crucial for ensuring the performance of hafnium oxide powder and reducing production losses. Utility Model Content

[0004] In order to overcome the shortcomings of the prior art, the present invention provides a hafnium oxide powder storage container with moisture-proof storage function.

[0005] The technical implementation scheme of this utility model is as follows: a hafnium oxide powder storage container with moisture-proof storage function, including a storage container body and a cover, and further including a sealing component, a cylindrical tube, a placement component, a vacuum component and a venting component. The upper part of the storage container body and the upper part of the cover body are provided with mutually pressing sealing components. After the sealing components are screwed with the storage container body and the cover, they form an inner sealing cavity. A cylindrical tube is connected to the middle of the cover. A placement component for placing desiccant is screwed on the cylindrical tube. A vacuum component that can assist in the discharge of gas in the storage container body is provided inside the cylindrical tube. A venting component is provided inside the vacuum component.

[0006] In a preferred embodiment of the present invention, the sealing assembly includes an isolation ring, a fixing ring, and an annular airbag. The fixing ring is provided on the upper part of the inner side wall of the storage tank body, and an annular groove is opened on the fixing ring. The annular airbag is installed in the annular groove. The isolation ring is provided on the top of the lid body, and the lower part of the isolation ring is inclined inward to form a frustum shape.

[0007] In a preferred embodiment of the present invention, the placement component includes a placement disk, a threaded sleeve, and an external thread. The threaded sleeve is embedded in the center of the placement disk, and ventilation holes are spaced apart on the placement disk. An external thread is provided on the upper part of the outer side wall of the cylindrical tube. The threaded sleeve of the placement disk passes through the smooth part of the cylindrical tube and engages with the upper external thread.

[0008] In a preferred embodiment of this utility model, the air extraction assembly includes a first annular sleeve, a first spiral spring, a first retaining ball, a compression spring, a movable sleeve, an annular piston ring, a second annular sleeve, a third annular sleeve, a second spiral spring, a second retaining ball, a rotating shaft, and a swing rod. The upper and lower sides of the inner wall of the cylindrical tube are each provided with a first annular sleeve. One end of the first spiral spring is connected to the bottom of the lower first annular sleeve, and the other end of the first spiral spring is connected to a first retaining ball. The first retaining ball contacts and engages with a circular hole at the bottom of the cylindrical tube. A movable sleeve is slidably provided on the upper first annular sleeve. The movable sleeve has an annular piston ring on its lower outer side, which slides against the inner wall of the cylindrical tube. A compression spring is installed between the annular piston ring and the top of the first annular sleeve below. A second annular sleeve is installed in the middle of the movable sleeve, and a third annular sleeve is installed in the lower part of the movable sleeve. One end of the second spiral spring is connected to the bottom of the second annular sleeve, and the other end of the second spiral spring is connected to a second retaining ball. The second retaining ball fits tightly against the center hole of the third annular sleeve. A rotating shaft is installed on the upper part of the movable sleeve in a horizontal rotatable manner, and a swing rod is installed on the rotating shaft.

[0009] In a preferred embodiment of the present invention, the venting assembly includes a guide sleeve, a first pull rope, and a second pull rope. Guide sleeves are provided on both sides of the top of the swing rod. One end of the first pull rope passes through the two guide sleeves and the second annular sleeve and is connected to the top of the second locking ball. The second pull rope is provided between the bottom of the second locking ball and the top of the first locking ball.

[0010] In a preferred embodiment of this utility model, the other end of the first pull rope is provided with an anti-slip pull ball. Beneficial effects

[0011] 1. This storage container, through the coordinated design of its sealing and extraction components, addresses the core deficiency of traditional passive moisture-proof devices by combining "active isolation" and "active dehumidification." In the sealing component, when the lid is screwed on, the frustum-shaped structure of the isolation ring compresses the annular air bladder on the fixing ring, causing it to deform and fit tightly against the isolation ring. Compared to traditional single-thread or sealing ring seals, this significantly increases the sealing contact area, forming a tight inner sealing cavity that effectively blocks external moisture intrusion, completely solving the problem of incomplete isolation in traditional sealing methods.

[0012] 2. The air extraction component actively extracts air containing water vapor from the can by reciprocating the swing rod, directly reducing the absolute humidity inside the can and reducing the amount of residual air inside the can, inhibiting air convection, and preventing moisture from fully contacting the hafnium oxide powder, thus slowing down the rate and extent of moisture absorption by the powder from the source.

[0013] 3. This storage container optimizes the desiccant usage mode and ease of operation, effectively solving the pain points of traditional desiccants, such as limited adsorption capacity and the need for frequent replacement. The placement component, through the screw-in structure of the threaded sleeve and cylindrical tube, can stably fix the placement tray containing the desiccant, and the vent holes on the placement tray allow the desiccant to fully contact the residual air inside the container, improving adsorption efficiency, extending the desiccant's lifespan, reducing replacement frequency, and lowering usage costs. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0015] Figure 2 This is a partial three-dimensional structural diagram of the present invention.

[0016] Figure 3 This is a schematic diagram of the installation structure of the placement component of this utility model.

[0017] Figure 4 This is an exploded structural diagram of the placement component of this utility model.

[0018] Figure 5 This is an exploded structural diagram of the sealing component of this utility model.

[0019] Figure 6 This is a cross-sectional view of the air extraction component of this utility model.

[0020] Figure 7 This is a schematic diagram of the installation structure of the venting component of this utility model.

[0021] The components are: 1-storage tank body, 2-lid body, 3-sealing assembly, 31-isolation ring, 32-fixing ring, 33-annular groove, 34-annular airbag, 4-cylindrical tube, 5-placement assembly, 51-placement plate, 52-threaded sleeve, 53-external thread, 54-vent hole, 6-vacuum assembly, 61-first annular sleeve, 62-first spiral spring, 63-first retaining ball, 64-compression spring, 65-movable sleeve column, 66-annular piston ring, 67-second annular sleeve, 68-third annular sleeve, 69-second spiral spring, 610-second retaining ball, 611-rotating shaft, 612-swing rod, 7-venting assembly, 71-guide sleeve, 72-first pull rope, 73-second pull rope. Detailed Implementation

[0022] The preferred technical solution of this utility model will be described in detail below with reference to the accompanying drawings.

[0023] Example: Figures 1-5 As shown, a hafnium oxide powder storage container with moisture-proof storage function includes a storage container body 1 and a cover 2, as well as a sealing component 3, a cylindrical tube 4, a placement component 5, a vacuum component 6, and a venting component 7. The upper part of the storage container body 1 and the upper part of the cover 2 are provided with mutually pressing sealing components 3. The sealing component 3 includes an isolation ring 31, a fixing ring 32, and an annular airbag 34. The fixing ring 32 is provided on the upper part of the inner sidewall of the storage container body 1, and the fixing ring 32 is integrally machined with the storage container body 1. An annular groove 33 is opened on the fixing ring 32, and an annular airbag 34 is installed in the annular groove 33. The annular airbag 34 is made of nitrile rubber and pre-filled with nitrogen to 0.2 MPa. An isolation ring 31 is provided at the top of the cover 2 to isolate... The lower part of the ring 31 is inclined inward to form a frustum shape. After the sealing component 3 is screwed with the storage tank body 1 and the cover 2, an inner sealing cavity is formed. A cylindrical tube 4 is connected to the middle of the cover 2. A placement component 5 for placing desiccant is screwed on the cylindrical tube 4. The placement component 5 includes a placement plate 51, a threaded sleeve 52 and an external thread 53. The threaded sleeve 52 is embedded in the center of the placement plate 51. Vent holes 54 are spaced apart on the placement plate 51. An external thread 53 is provided on the upper part of the outer wall of the cylindrical tube 4. The threaded sleeve 52 of the placement plate 51 passes through the smooth part of the cylindrical tube 4 and is screwed with the upper external thread 53. An air extraction component 6 is provided in the cylindrical tube 4 to help discharge the gas in the storage tank body 1. An air release component 7 is provided in the air extraction component 6.

[0024] like Figure 1 , Figure 6 and Figure 7As shown, the vacuum assembly 6 includes a first annular sleeve 61, a first spiral spring 62, a first retaining ball 63, a compression spring 64, a movable sleeve 65, an annular piston ring 66, a second annular sleeve 67, a third annular sleeve 68, a second spiral spring 69, a second retaining ball 610, a rotating shaft 611, and a swing rod 612. The upper and lower sides of the inner wall of the cylindrical tube 4 are each provided with a first annular sleeve 61. One end of the first spiral spring 62 is riveted to the bottom of the lower first annular sleeve 61 by a rivet, and the other end of the first spiral spring 62 is welded to the first retaining ball 63. The first retaining ball 63 contacts and engages with the bottom circular hole inside the cylindrical tube 4. A movable sleeve 65 is slidably mounted on the upper first annular sleeve 61. An annular mounting groove is opened on the lower outer side of the movable sleeve 65. The inner ring of the annular piston ring 66 is interference-fitted with the annular mounting groove of the movable sleeve 65. The polytetrafluoroethylene material contains 15% carbon fiber. The annular piston ring 66 slides with the inner wall of the cylindrical tube 4. The clearance between the piston ring and the inner wall of the cylindrical tube is ≤0.02mm. The pre-compression of the sealing ring is 0.3mm to ensure no gas leakage during evacuation. A compression spring 64 is provided between the annular piston ring 66 and the top of the first annular sleeve 61 on the lower side. A second annular sleeve 67 is provided in the middle of the movable sleeve column 65. A third annular sleeve 68 is provided in the lower part of the movable sleeve column 65. One end of the second spiral spring 69 is riveted to the bottom of the second annular sleeve 67 by a rivet. The other end of the second spiral spring 69 is welded to the second retaining ball 610. The second retaining ball 610 is tightly fitted with the center hole of the third annular sleeve 68. A rotating shaft 611 is provided laterally on the upper part of the movable sleeve column 65. A swing rod 612 is provided on the rotating shaft 611.

[0025] like Figure 1 and Figure 7 As shown, the deflation assembly 7 includes a guide sleeve 71, a first pull rope 72 and a second pull rope 73. Guide sleeves 71 are provided on both sides of the top of the swing rod 612. One end of the first pull rope 72 passes through the two guide sleeves 71 and the second annular sleeve 67 and connects to the top of the second locking ball 610. The second pull rope 73 is provided between the bottom of the second locking ball 610 and the top of the first locking ball 63. The other end of the first pull rope 72 is provided with an anti-slip pull ball.

[0026] When it is necessary to seal and store the storage container 1 containing hafnium oxide powder, first unscrew the placement tray 51, place an appropriate amount of desiccant inside the placement tray 51, and then screw the threaded sleeve 52 of the placement tray 51 through the cylindrical tube 4 and screw it into the upper external thread 53 to fix it. The side wall of the placement tray 51 contacts the bottom of the inner part of the cover 2 to prevent the desiccant from falling out. Then screw the cover 2 into the storage container 1 to fix it. At the same time, the lower inclined surface of the isolation ring 31 will compress the annular air bladder 34 on the fixing ring 32. The annular air bladder 34 deforms under the compression, thereby further sealing the contact part between the isolation ring 31 and the fixing ring 32. At this time, the staff uses the air extraction component 6 to extract air from the inside of the storage tank body 1, thereby reducing the internal humidity inside the storage tank body 1. When using the air extraction component 6, the swing rod 612 is rotated, and the swing rod 612 and the movable sleeve 65 are on the same axis. Then, the swing rod 612 is pressed down. Since the first locking ball 63 is restricted by the lower circular hole of the cylindrical tube 4, the swing rod 612 drives the movable sleeve 65 and the annular piston ring 66 to move downward. The second pull rope 73 is relaxed, and the air pressure inside the cylindrical tube 4 increases. As a result, the upper second locking ball 610 is impacted and moves upward. The second spiral spring 69 is compressed. Neither the first pull rope 72 nor the second pull rope 73 is taut. The gas in the middle of the cylindrical tube 4 is discharged upward. The compression spring 64 is compressed. When the middle of the cylindrical tube 4... After the air is expelled, the swing rod 612 is pulled upwards. The swing rod drives the movable sleeve 65 and the annular piston ring 66 to move upwards. The first locking ball 63 moves upwards, the first spiral spring 62 is compressed, and the second spiral spring 69 drives the second locking ball 610 to reset. During the reset process of the movable sleeve 65 and the annular piston ring 66, the gas in the storage tank body 1 can be drawn into the cavity between the two first annular sleeves 61 of the cylindrical tube 4. The compression spring 64 resets. Then, the swing rod 612 is repeatedly pressed downwards and pulled upwards to gradually expel the gas in the storage tank body 1. Finally, the swing rod 612 is bent and pressed against the cover 2 again. The air extraction process will extract most of the air containing water vapor inside the tank, directly reducing the absolute humidity inside the tank. Even if a small amount of air remains, the moisture it carries is far less than when the air is not removed, which can significantly slow down the rate and extent of moisture absorption by hafnium oxide powder. Furthermore, the small amount of residual air inside the storage container 1 means that air convection is almost stagnant, making it difficult for moisture to move within the container and come into full contact with the powder, further reducing the risk of moisture absorption.

[0027] When hafnium oxide powder needs to be removed, the operator pulls the anti-slip ball, which pulls the second locking ball 610 through the first pull rope 72. The second spiral spring 69 is compressed, and the second locking ball 610 drives the first locking ball 63 to move upward through the second pull rope 73. At this time, external air enters the cavity of the storage tank body 1 through the cylindrical tube 4 to balance the air pressure. Then the cover 2 can be turned. This device has a simple structure and is easy to operate.

[0028] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A hafnium oxide powder storage container with moisture-proof storage function, comprising a container body (1) and a lid (2), characterized in that: It also includes a sealing component (3), a cylindrical tube (4), a placement component (5), an air extraction component (6), and a venting component (7). The upper part of the storage tank body (1) and the upper part of the cover body (2) are provided with a sealing component (3) that is mutually squeezed and fitted. After the sealing component (3) is screwed with the storage tank body (1) and the cover body (2), an inner sealing cavity is formed. The middle part of the cover body (2) is connected to a cylindrical tube (4). A placement component (5) for placing desiccant is screwed on the cylindrical tube (4). An air extraction component (6) that can assist in the discharge of gas in the storage tank body (1) is provided inside the cylindrical tube (4). A venting component (7) is provided inside the air extraction component (6).

2. A hafnium oxide powder storage container with moisture-proof storage function according to claim 1, characterized in that: The sealing assembly (3) includes an isolation ring (31), a fixing ring (32) and an annular airbag (34). The upper part of the inner wall of the storage tank body (1) is provided with a fixing ring (32), and an annular groove (33) is opened on the fixing ring (32). An annular airbag (34) is installed in the annular groove (33). The top of the cover body (2) is provided with an isolation ring (31), and the lower part of the isolation ring (31) is inclined inward to form a frustum shape.

3. A hafnium oxide powder storage container with moisture-proof storage function according to claim 2, characterized in that: The placement assembly (5) includes a placement plate (51), a threaded sleeve (52) and an external thread (53). The threaded sleeve (52) is embedded in the center of the placement plate (51). Ventilation holes (54) are spaced apart on the placement plate (51). An external thread (53) is provided on the upper part of the outer side wall of the cylindrical tube (4). The threaded sleeve (52) of the placement plate (51) passes through the smooth part of the cylindrical tube (4) and engages with the external thread (53) on the upper part.

4. A hafnium oxide powder storage container with moisture-proof storage function according to claim 3, characterized in that: The vacuum assembly (6) includes a first annular sleeve (61), a first spiral spring (62), a first retaining ball (63), a compression spring (64), a movable sleeve (65), an annular piston ring (66), a second annular sleeve (67), a third annular sleeve (68), a second spiral spring (69), a second retaining ball (610), a rotating shaft (611), and a swing rod (612). The upper and lower sides of the inner wall of the cylindrical tube (4) are each provided with a first annular sleeve (61). One end of the first spiral spring (62) is connected to the bottom of the lower first annular sleeve (61), and the other end of the first spiral spring (62) is connected to a first retaining ball (63). The first retaining ball (63) contacts and engages with the inner bottom circular hole of the cylindrical tube (4). A movable sleeve (65) is slidably provided on the upper first annular sleeve (61). An annular piston ring (66) is provided on the lower outer side of the sleeve (65). The annular piston ring (66) slides with the inner wall of the cylindrical tube (4). A compression spring (64) is provided between the annular piston ring (66) and the top of the first annular sleeve (61) on the lower side. A second annular sleeve (67) is provided in the middle of the movable sleeve (65). A third annular sleeve (68) is provided in the lower part of the movable sleeve (65). One end of the second spiral spring (69) is connected to the bottom of the second annular sleeve (67). The other end of the second spiral spring (69) is connected to the second retaining ball (610). The second retaining ball (610) fits tightly with the center hole of the third annular sleeve (68). A rotating shaft (611) is provided in a horizontal rotational manner on the upper part of the movable sleeve (65). A swing rod (612) is provided on the rotating shaft (611).

5. A hafnium oxide powder storage container with moisture-proof storage function according to claim 4, characterized in that: The venting assembly (7) includes a guide sleeve (71), a first pull rope (72), and a second pull rope (73). Guide sleeves (71) are provided on both sides of the top of the swing rod (612). One end of the first pull rope (72) passes through the two guide sleeves (71) and the second annular sleeve (67) and is connected to the top of the second locking ball (610). The second pull rope (73) is provided between the bottom of the second locking ball (610) and the top of the first locking ball (63).

6. A hafnium oxide powder storage container with moisture-proof storage function according to claim 5, characterized in that: The other end of the first pull rope (72) is equipped with an anti-slip pull ball.

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