A pure phosphine storage device and method

Abstract

The present invention provides a pure phosphine storage device and method, relating to the field of storage devices, including: a storage mechanism; the storage mechanism is the main body of the storage device, and the main body is of a cylindrical structure; the top piece on the protection mechanism is fixedly installed on the top of the main body of the storage mechanism; the mounting ring is installed on the top of the connecting piece; the spherical protrusion on the contact piece is installed inside the circular hole on the seal; the contact piece is in contact with the ground, so that the contact piece is inside the circular hole on the mounting ring, and the contact piece is inserted into the seal, and the spherical protrusion on the contact piece is in contact with the hemispherical protrusion on the moving piece, and the bottom of the moving piece is in contact with the plug, so that the wedge-shaped protrusion on the plug is inserted into the rectangular hole on the moving piece, and the bottom of the moving piece seals the seal, solving the problem that the existing storage device cannot achieve a better sealing effect on the storage device when the storage device is overturned during use.

Description

Technical Field

[0001] The present invention relates to the technical field of storage devices, and particularly relates to a pure phosphine storage device and method. Background Art

[0002] Phosphine, also known as phosphane, is an inorganic compound. Pure phosphine can be obtained through multiple purifications. The chemical formula of phosphane is PH3. It is a colorless, highly toxic, flammable liquefied compressed gas stored in steel cylinders. However, for the existing pure phosphine storage devices and methods, phosphine is a highly toxic compound. It is usually stored in steel cylinders, and generally stored upright, and also requires well-ventilated storage conditions. During actual storage, there is no structure for fixing and positioning the storage device, resulting in the phenomenon of tipping during storage, damaging the steel cylinder and even causing phosphine leakage. Moreover, when the existing storage device is in use, due to the highly toxic nature of phosphine, it is necessary to ensure sealed storage during storage. During transportation or storage, if the storage device is tipped due to external force collision, it is easy to cause phosphine leakage, and it cannot achieve a better sealing effect on the storage device when it is tipped, and enhance the sealing effect of the storage device. Summary of the Invention

[0003] The purpose of the present invention is to provide a pure phosphine storage device and method to protect the valve on the top of the steel cylinder and prevent pure phosphine stored inside from leaking when the steel cylinder is tipped.

[0004] The technical solution adopted by the present invention is as follows:

[0005] A pure phosphine storage device includes: a storage mechanism, a protection mechanism, a fixing mechanism, and an installation mechanism; the storage mechanism includes: a main body, the main body is a closed cylindrical structure, and a valve and a pressure gauge are provided on the top of the main body; the protection mechanism is arranged on the top of the storage mechanism, and the top member at the bottom of the protection mechanism is fixedly arranged on the top of the main body of the storage mechanism; the fixing mechanism is arranged at the bottom of the storage mechanism, and the fixing member at the top of the fixing mechanism is connected to the bottom of the main body; the installation mechanism is arranged at the bottom of the fixing mechanism, and the installation member on the installation mechanism is connected to the bottom of the fixing member.

[0006] Further, the storage mechanism further includes: a sealing member and a plug-in member;

[0007] The sealing member is a cylindrical shape with a top plug, the sealing member is arranged on the top of the main body, the bottom of the sealing member is connected to the valve, and an extraction hole for extracting pure phosphine is provided on the side wall in the middle of the sealing member; the plug-in member is a horizontal cylinder, the inner end of the plug-in member is a wedge-shaped protrusion, the plug-in member is slidably connected through a corresponding circular hole on the sealing member, a tension spring is sleeved on the plug-in member, and the tension spring is arranged between the cylindrical protrusion at the outer end of the plug-in member and the sealing member.

[0008] Further, the storage mechanism further includes: an inlay and a moving member, both the moving member and the inlay are arranged inside the seal;

[0009] The inlay is annular, the middle part of the moving member is cylindrical, the bottom of the moving member is disc-shaped, the top of the moving member is hemispherical, and the bottom of the moving member is in sealing fit with the seal; the bottom of the moving member is higher than the extraction hole, a rectangular hole is provided in the lower part of the moving member, the bottom of the hemispherical protrusion on the moving member is connected to the inlay through a spring, and the wedge-shaped protrusion at the inner end of the plug abuts against the outer side of the moving member, and this wedge-shaped protrusion is lower than the rectangular hole.

[0010] Further, the protection mechanism further includes a connecting member;

[0011] The top member is annular, the connecting member is a vertical round rod shape, the connecting member is fixedly arranged on the top of the top member, and there are six connecting members evenly distributed in the circumferential direction.

[0012] Further, the protection mechanism further includes: a mounting ring and a contact member;

[0013] The mounting ring is annular, and the mounting ring is fixedly arranged on the top of the connecting member; the contact member is a horizontal round rod shape, the contact member is arranged along the radial direction of the mounting ring, the contact member is slidably connected to the mounting ring in a penetrating manner, the outer end of the contact member is a cylindrical protrusion, the inner end of the contact member is a spherical protrusion, this spherical protrusion is located in the corresponding circular hole on the seal, this spherical protrusion is in sliding fit with the seal, and a spring sleeved on the contact member is provided between the cylindrical protrusion at the outer end of the contact member and the mounting ring.

[0014] Further, the fixing member is a cylindrical shape with a closed bottom, and four radial sliding grooves are evenly distributed at the bottom of the fixing member.

[0015] Further, the fixing mechanism further includes a sliding rod slidably connected in the sliding groove and a claw fixedly arranged on the top of the sliding rod;

[0016] The sliding rod is cylindrical, the claw is an L-shaped structure, and the top of the claw is a circular arc for cooperating with the main body.

[0017] Further, the fixing mechanism further includes: a driven gear and four arc-shaped rotating grooves arranged radially on the driven gear;

[0018] The driven gear is rotatably connected to the center of the bottom of the fixing member; the bottom of the claw is a cylindrical protrusion, this cylindrical protrusion is arranged in the rotating groove and the corresponding sliding groove, and this cylindrical protrusion is in sliding fit with the driven gear.

[0019] Further, the installation mechanism includes an annular installation piece and a driving gear; a wedge-shaped protrusion is provided on the circumference of the installation piece, the center of the installation piece is an installation hole, a motor is fixedly arranged in the installation hole, the driving gear is fixedly connected to the output shaft of the motor, and the driving gear is in transmission connection with a driven gear.

[0020] A method for storing pure phosphine, using a pure phosphine storage device, includes the following steps:

[0021] S1. Insert the main body between the four clamping claws of the fixing piece. The motor drives the driving gear to rotate, drives the driven gear through the driving gear, and then drives the driven gear to rotate. When the driven gear rotates, it drives the clamping claws to move along the rotating groove. The moving direction of the clamping claws is limited by the sliding groove, so that the four groups of clamping claws slide radially inside the sliding groove, and the clamping claws are clamped around the bottom of the main body, so as to play a role in clamping and fixing the main body and prevent the phenomenon of tipping during storage.

[0022] S2. When the main body tilts during transportation, after the outer end of the contact piece contacts the ground, the contact piece is inserted into the sealing piece, and the spherical protrusion at the inner end of the contact piece contacts the hemispherical protrusion on the moving piece, thereby driving the moving piece to move downward and compressing the spring on the moving piece, so that the bottom of the moving piece slides along the wedge-shaped protrusion at the inner end of the plug-in piece. After the moving piece moves downward, the wedge-shaped protrusion at the inner end of the plug-in piece is inserted into the rectangular hole on the moving piece to lock the position of the moving piece. At this time, the bottom of the moving piece is lower than the extraction hole, so as to play a sealing role through the bottom of the moving piece and prevent the valve on the main body from loosening and causing pure phosphine leakage.

[0023] The positive effects of the present invention are as follows:

[0024] 1. The present invention is provided with a main body, a storage mechanism, a protection mechanism, a fixing mechanism and an installation mechanism. The fixing mechanism can avoid the phenomenon of tipping during storage, prevent damage to the main body and the valve on the main body, and even prevent the pure phosphine stored in the main body from leaking. During transportation or storage, if the storage device is tipped due to an accidental external force collision, through the mutual cooperation of the protection mechanism and the storage mechanism, the storage mechanism can be sealed again, enhancing the sealing effect and preventing pure phosphine from leaking.

[0025] 2. The present invention is provided with a fixing piece, an installation piece, a motor, a driving gear, a driven gear and clamping claws. The motor drives the driving gear to rotate, then drives the driven gear to rotate, and then drives the clamping claws to move inward or outward, so as to clamp or loosen the bottom of the main body. The bottom of the main body is clamped by the clamping claws, so as to play a role in clamping and fixing the main body and prevent tipping due to an accident during storage.

[0026] 3. The protection mechanism is provided with a contact member, a moving member, an inlaid member, and a plug-in member. A spring is provided on the moving member. When the main body is tilted, the outer end of the contact member contacts the ground, causing the contact member to compress the spring. The contact member moves radially towards the center of the mounting ring, driving the moving member to move downward. The wedge-shaped protrusion at the inner end of the plug-in member is inserted into the corresponding rectangular hole on the moving member to lock the vertical position of the moving member, thereby sealing the top of the main body and preventing the pure phosphine in the main body from leaking through the valve and then overflowing through the extraction hole. At the same time, the tip, the connecting member, and the mounting ring are arranged around the valve to protect the valve and prevent it from being accidentally knocked. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments will be briefly introduced below.

[0028] The drawings in the following description only relate to some embodiments of the present invention and do not limit the present invention.

[0029] In the drawings:

[0030] Figure 1 is the front perspective structural schematic diagram of the pure phosphine storage device and method according to the embodiment of the present invention.

[0031] Figure 2 is the rear perspective structural schematic diagram of the pure phosphine storage device and method according to the embodiment of the present invention.

[0032] Figure 3 is the partial exploded perspective structural schematic diagram of the pure phosphine storage device and method according to the embodiment of the present invention.

[0033] Figure 4 is the exploded perspective structural schematic diagram of the storage mechanism and the protection mechanism of the pure phosphine storage device and method according to the embodiment of the present invention.

[0034] Figure 5 is the exploded perspective structural schematic diagram of the fixing mechanism and the mounting mechanism of the pure phosphine storage device and method according to the embodiment of the present invention.

[0035] Figure 6 is the partial cross-sectional perspective structural schematic diagram of the storage mechanism of the pure phosphine storage device and method according to the embodiment of the present invention.

[0036] Figure 7 is the exploded perspective structural schematic diagram of the protection mechanism of the pure phosphine storage device and method according to the embodiment of the present invention.

[0037] Figure 8 is the exploded perspective structural schematic diagram of the fixing mechanism of the pure phosphine storage device and method according to the embodiment of the present invention.

[0038] Figure 9It is a schematic diagram of the exploded perspective structure of the fixing mechanism of the pure phosphine storage device and method according to an embodiment of the present invention, viewed from below.

[0039] Figure 10 It is a partial enlarged structure schematic diagram of part A led out from the Figure 6 of the pure phosphine storage device and method according to an embodiment of the present invention.

[0040] List of reference numerals

[0041] 1. Storage mechanism;

[0042] 101. Main body; 102. Sealing member; 103. Plug-in member; 104. Inlay member; 105. Moving member;

[0043] 2. Protection mechanism;

[0044] 201. Top member; 202. Connecting member; 203. Mounting ring; 204. Contact member;

[0045] 3. Fixing mechanism;

[0046] 301. Fixing member; 302. Chute; 303. Sliding rod; 304. Claw; 305. Driven gear; 306. Rotating groove;

[0047] 4. Mounting mechanism;

[0048] 401. Mounting member; 402. Mounting hole; 403. Driving gear. Detailed implementation manners

[0049] The following further describes in detail the implementation manners of the present invention in conjunction with the drawings and embodiments.

[0050] Embodiment 1

[0051] Please refer to Figures 1 to 10 as shown:

[0052] A pure phosphine storage device includes: a storage mechanism 1, a protection mechanism 2 provided on the top of the storage mechanism 1, a fixing mechanism 3 provided on the bottom of the storage mechanism 1, and a mounting mechanism 4 provided on the bottom of the fixing mechanism 3.

[0053] The storage mechanism 1 includes: a main body 101, the main body 101 is a vertically placed closed cylindrical structure, and a valve and a pressure gauge are provided on the top of the main body 101. The bottom of the protection mechanism 2 is a top member 201, and the top member 201 is fixedly provided on the top of the main body 101 of the storage mechanism 1.

[0054] The fixing mechanism 3 is arranged at the bottom of the storage mechanism 1. The top of the fixing mechanism 3 is a fixing piece 301, and the fixing piece 301 is connected to the bottom of the main body 101. The mounting piece 401 on the mounting mechanism 4 is connected to the bottom of the fixing piece 301.

[0055] The storage mechanism 1 further includes: a sealing member 102 and a plug-in member 103;

[0056] The sealing member 102 is a vertically placed cylindrical shape with a top seal. The sealing member 102 is arranged at the top of the main body 101. The bottom of the sealing member 102 is screwed onto the valve. An extraction hole for extracting pure phosphine is provided on the side wall of the middle part of the sealing member 102. The plug-in member 103 is a horizontal cylindrical shape. Two plug-in members 103 are symmetrically arranged on the sealing member 102. The inner ends of the plug-in members 103 are wedge-shaped protrusions. The middle parts of the plug-in members 103 are slidably connected through corresponding circular holes provided on the sealing member 102. Springs are sleeved on the plug-in members 103. The springs are arranged between the cylindrical protrusions at the outer ends of the corresponding plug-in members 103 and the sealing member 102. The two ends of each spring are fixedly connected to the corresponding cylindrical protrusion and the sealing member 102 respectively.

[0057] The storage mechanism 1 further includes: an inlay member 104 and a moving member 105. The moving member 105 and the inlay member 104 are both arranged inside the sealing member 102;

[0058] The inlay member 104 is an annular shape coaxial with the sealing member 102. The middle part of the moving member 105 is cylindrical, the bottom of the moving member 105 is disc-shaped, the top of the moving member 105 is hemispherical. The moving member 105 is coaxial with the sealing member 102. The bottom of the moving member 105 is in sealing cooperation with the sealing member 102. The bottom of the moving member 105 is higher than the extraction hole. A rectangular hole is provided in the lower part of the moving member 105. The middle part of the moving member 105 is slidably connected through the inlay member 104. A spring is provided between the hemispherical protrusion at the top of the moving member 105 and the top surface of the inlay member 104. The wedge-shaped protrusion abuts against the outside of the bottom of the moving member 105, and the wedge-shaped protrusion is lower than the rectangular hole.

[0059] The protection mechanism 2 further includes a connecting member 202; the top member 201 is an annular shape, the connecting member 202 is a vertically arranged round rod shape, the connecting member 202 is fixedly arranged at the top of the top member 201, and six connecting members 202 are evenly distributed in the circumferential direction.

[0060] A circular mounting ring 203 is fixedly arranged at the top of the connecting member 202, and a contact member 204 is slidably connected through the mounting ring 203 along the radial direction; the contact member 204 is in the shape of a round rod, and there are four contact members 204 distributed circumferentially. The outer ends of the contact members 204 are all cylindrical protrusions, and the inner ends of the contact members 204 are all spherical protrusions. The spherical protrusions are respectively located in the corresponding circular holes on the sealing member 102, and the spherical protrusions are respectively in sliding fit with the sealing member 102. A spring sleeved on the contact member 204 is arranged between the cylindrical protrusion at the outer end of the contact member 204 and the mounting ring 203.

[0061] After the valve is opened, the pure phosphine stored in the main body 101 can be extracted through the extraction hole on the sealing member 102.

[0062] When the main body 101 is tilted, the outer end of the contact member 204 contacts the ground, thereby causing the contact member 204 to compress the spring, and the contact member 204 moves radially towards the center of the mounting ring 203. The spherical protrusion at the inner end of the contact member 204 contacts the hemispherical protrusion at the top of the moving member 105, thereby driving the moving member 105 to move downward. The moving member 105 moves downward and compresses the spring between it and the inlay 104. The wedge-shaped protrusion at the inner end of the plug 103 is inserted into the corresponding rectangular hole on the moving member 105 to lock the vertical position of the moving member 105. At this time, the bottom of the moving member 105 is lower than the extraction hole on the sealing member 102, so as to seal the top of the main body 101 and prevent the pure phosphine in the main body 101 from leaking through the valve and then overflowing through the extraction hole.

[0063] Embodiment 2

[0064] The difference between this embodiment and Embodiment 1 is as follows:

[0065] The fixing member 301 is a cylindrical shape with a bottom blocked, and four radial sliding grooves 302 are evenly distributed at the bottom of the fixing member 301.

[0066] The fixing mechanism 3 further includes a sliding rod 303 slidably connected in the sliding groove 302 and a claw 304 fixedly arranged at the top of the sliding rod 303;

[0067] The sliding rod 303 is cylindrical along the sliding groove 302, the claw 304 is an L-shaped structure, and the top of the claw 304 is an arc for cooperating with the main body 101.

[0068] The fixing mechanism 3 further includes: a driven gear 305 and four arc-shaped rotating grooves 306 arranged radially on the driven gear. The four rotating grooves 306 correspond to the four sliding grooves 302 in position.

[0069] The driven gear 305 is rotatably connected to the center of the bottom of the fixing member 301; the bottoms of the claw 304 are all cylindrical protrusions, the cylindrical protrusions are respectively arranged in the chute 302 and the corresponding rotation groove 306, the cylindrical protrusions are in sliding fit with the driven gear 305, and the cylindrical protrusions are in sliding fit with the chute 302.

[0070] The mounting mechanism 4 includes an annular mounting member 401 and a driving gear 403 arranged inside the mounting member 401; a wedge-shaped protrusion is provided on the circumference of the mounting member 401 for mounting the anchor bolt. The center of the mounting member 401 is a mounting hole 402, a motor is fixedly arranged in the mounting hole 402, the driving gear 403 is fixedly connected to the output shaft of the motor, and the driving gear 403 is in transmission connection with the driven gear 305.

[0071] The motor drives the driving gear 403 to rotate, and then drives the driven gear 305 to rotate. The four rotation grooves 306 rotate along the center of the driven gear 305. Since the cylindrical protrusions at the bottoms of the claws 304 are both in the chute 302 and in the rotation groove 306, the cylindrical protrusions are located at the intersection of the rotation groove 306 and the chute 302. When the rotation groove 306 rotates along the center of the driven gear 305, the intersection of the rotation groove 306 and the chute 302 will move inwards or outwards along the chute, so the claws 304 will move inwards or outwards, thereby clamping or loosening the bottom of the main body 101.

[0072] The bottom of the main body 101 is clamped by the claws 304, so that the main body 101 can be clamped and fixed, and it can be prevented from tipping over accidentally during storage.

[0073] Embodiment 3

[0074] The difference between this embodiment and Embodiment 2 is as follows:

[0075] The present invention discloses a pure phosphine storage device and method. A pure phosphine storage device in Embodiment 2 is adopted, and the method includes the following steps:

[0076] S1, insert the main body 101 between the four claws 304 of the fixing member 301. The motor drives the driving gear 403 to rotate. The driving gear 403 drives the driven gear 305, and then drives the driven gear 305 to rotate. When the driven gear 305 rotates, it drives the claws 304 to move along the rotation groove 306. The moving direction of the claws 304 is limited by the chute 302, so that the four groups of claws 304 slide radially inside the chute 302, and the claws 304 are clamped around the bottom of the main body 101, so that the main body 101 can be clamped and fixed, and it can be prevented from tipping over during storage;

[0077] S2. When the main body 101 is tilted during transportation, after the outer end of the contact member 204 contacts the ground, the contact member 204 is inserted into the inside of the seal member 102. The spherical protrusion at the inner end of the contact member 204 contacts the hemispherical protrusion on the moving member 105, thereby driving the moving member 105 to move downward and compress the spring on the moving member 105, causing the bottom of the moving member 105 to slide along the wedge-shaped protrusion at the inner end of the plug-in member 103. After the moving member 105 moves downward, the wedge-shaped protrusion at the inner end of the plug-in member 103 is inserted into the rectangular hole on the moving member 105 to lock the position of the moving member 105. At this time, the bottom of the moving member 105 is lower than the extraction hole, thereby playing a sealing role through the bottom of the moving member 105 to prevent the valve on the main body 101 from loosening and causing pure phosphine leakage.

[0078] The content of the above-described embodiments is relatively detailed and specific, expressing the preferred embodiments of the present invention. It is only used to illustrate the technical ideas and features of the present invention. Its purpose is to enable those skilled in the art to understand the content of the present invention and implement it accordingly. However, it is not limited to the present invention. The patent scope of the present invention cannot be limited only by this embodiment. That is, any equivalent changes or modifications made in accordance with the spirit disclosed by the present invention, for researchers or technicians in the field, within the structure of the present invention, local improvements within the system and changes and transformations between subsystems are still within the patent scope of the present invention. Currently, the technical solution of this application has been pilot-tested, that is, small-scale experiments before large-scale production of the product; after the pilot test, user usage research has been carried out on a small scale, and the research results show a high degree of user satisfaction; now preparations are underway for the formal production and industrialization of the product, including research on intellectual property risk early warning.

Claims

1. A pure phosphine storage device, characterized in that, Including: A storage mechanism (1), a protection mechanism (2), a fixing mechanism (3) and a mounting mechanism (4); The storage mechanism (1) includes: a main body (101), the main body (101) is a closed cylindrical structure, and a valve and a pressure gauge are provided at the top of the main body (101); the protection mechanism (2) is arranged on the top of the storage mechanism (1), and the top member (201) at the bottom of the protection mechanism (2) is fixedly arranged on the top of the main body (101) of the storage mechanism (1); the fixing mechanism (3) is arranged at the bottom of the storage mechanism (1), and the fixing member (301) at the top of the fixing mechanism (3) is connected to the bottom of the main body (101); the mounting mechanism (4) is arranged at the bottom of the fixing mechanism (3), and the mounting member (401) on the mounting mechanism (4) is connected to the bottom of the fixing member (301); The storage mechanism (1) further includes: a seal (102) and a plug-in member (103); The seal (102) is a cylindrical shape with a sealed top, the seal (102) is arranged on the top of the main body (101), the bottom of the seal (102) is connected to the valve, and an extraction hole for extracting pure phosphine is provided on the side wall in the middle of the seal (102); the plug-in member (103) is a horizontal cylindrical shape, the inner end of the plug-in member (103) is a wedge-shaped protrusion, the plug-in member (103) is slidably connected through a corresponding circular hole on the seal (102), and a tension spring is sleeved on the plug-in member (103), and the tension spring is arranged between the cylindrical protrusion at the outer end of the plug-in member (103) and the seal (102); The storage mechanism (1) further includes: an inlay (104) and a moving member (105), and both the moving member (105) and the inlay (104) are arranged inside the seal (102); The inlay (104) is circular ring-shaped, the middle of the moving member (105) is cylindrical, the bottom of the moving member (105) is disc-shaped, the top of the moving member (105) is hemispherical, and the bottom of the moving member (105) is in sealing fit with the seal (102); the bottom of the moving member (105) is higher than the extraction hole, a rectangular hole is provided in the lower part of the moving member (105), the bottom of the hemispherical protrusion on the moving member (105) is connected to the inlay (104) through a spring, and the wedge-shaped protrusion at the inner end of the plug-in member (103) abuts against the outside of the moving member (105), and this wedge-shaped protrusion is lower than the rectangular hole.

2. The pure phosphine storage device according to claim 1, wherein: The protection mechanism (2) further includes a connecting member (202); The top member (201) is circular ring-shaped, the connecting member (202) is a vertical round rod shape, the connecting member (202) is fixedly arranged on the top of the top member (201), and there are six connecting members (202) evenly distributed in the circumferential direction.

3. The pure phosphine storage device according to claim 2, wherein: The protection mechanism (2) further includes: a mounting ring (203) and a contact member (204); The mounting ring (203) is circular ring-shaped, and the mounting ring (203) is fixedly arranged on the top of the connecting piece (202); the contact piece (204) is a transverse round rod-shaped, the contact piece (204) is arranged along the radial direction of the mounting ring (203), the contact piece (204) is slidably connected to the mounting ring (203) in a penetrating manner, the outer end of the contact piece (204) is a cylindrical protrusion, the inner end of the contact piece (204) is a spherical protrusion, the spherical protrusion is located in a corresponding round hole on the sealing piece (102), the spherical protrusion is slidably matched with the sealing piece (102), and a spring sleeved on the contact piece (204) is arranged between the cylindrical protrusion at the outer end of the contact piece (204) and the mounting ring (203).

4. The pure phosphine storage device according to claim 3, characterized in that: The fixing piece (301) is a cylindrical shape with a closed bottom, and four radial sliding grooves (302) are evenly distributed at the bottom of the fixing piece (301).

5. The pure phosphine storage device according to claim 4, characterized in that: The fixing mechanism (3) further includes a sliding rod (303) slidably connected in the sliding groove (302) and a claw (304) fixedly arranged at the top of the sliding rod (303); The sliding rod (303) is cylindrical, the claw (304) is an L-shaped structure, and the top of the claw (304) is a circular arc for cooperating with the main body (101).

6. The pure phosphine storage device and method according to claim 5, characterized in that: The fixing mechanism (3) further includes: a driven gear (305) and four arc-shaped rotating grooves (306) arranged along the radial direction on the driven gear; The driven gear (305) is rotatably connected to the center of the bottom of the fixing piece (301); the bottom of the claw (304) is a cylindrical protrusion, the cylindrical protrusion is arranged in the rotating groove (306) and the corresponding sliding groove (302), and the cylindrical protrusion is slidably matched with the driven gear (305).

7. The pure phosphine storage device according to claim 6, characterized in that: The mounting mechanism (4) includes an annular mounting piece (401) and a driving gear (403); wedge-shaped protrusions are arranged on the circumference of the mounting piece (401), the center of the mounting piece (401) is a mounting hole (402), a motor is fixedly arranged in the mounting hole (402), the driving gear (403) is fixedly connected to the output shaft of the motor, and the driving gear (403) is in transmission connection with the driven gear (305).

8. A method for storing pure phosphine, using a pure phosphine storage device as described in claim 7, characterized in that , including the following steps: S1, insert the main body (101) between the four claws (304) of the fixing piece (301), the motor drives the driving gear (403) to rotate, drive the driven gear (305) through the driving gear (403), and then drive the driven gear (305) to rotate. When the driven gear (305) rotates, it drives the claw (304) to move along the rotating groove (306), and the moving direction of the claw (304) is limited by the sliding groove (302), so that the four groups of claws (304) slide radially inside the sliding groove (302), and the claws (304) are clamped around the bottom of the main body (101), so as to play a role of clamping and fixing the main body (101) and prevent the phenomenon of tipping during storage; S2. When the main body (101) is tilted during transportation, after the outer end of the contact member (204) contacts the ground, the contact member (204) is inserted into the interior of the seal member (102). The spherical protrusion at the inner end of the contact member (204) contacts the hemispherical protrusion on the moving member (105), thereby driving the moving member (105) to move downward and compress the spring on the moving member (105), causing the bottom of the moving member (105) to slide along the wedge-shaped protrusion at the inner end of the plug-in member (103). After the moving member (105) moves downward, the wedge-shaped protrusion at the inner end of the plug-in member (103) is inserted into the rectangular hole on the moving member (105) to lock the position of the moving member (105). At this time, the bottom of the moving member (105) is lower than the extraction hole, thereby playing a sealing role through the bottom of the moving member (105) to prevent the valve on the main body (101) from loosening and causing pure phosphine leakage.

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