Lithium hexafluorophosphate storage device with double-sealing structure

Abstract

The lithium hexafluorophosphate storage device with the double-sealing structure comprises a storage tank body, the top of the storage tank body is matched with a tank cover, and a sealing pressing disc is arranged at the bottom of the tank cover. In the embodiment 1, in the process of extracting air in the inner cavity of the storage tank body, a guide rod moves downwards due to air pressure, and lithium hexafluorophosphate stored in the storage tank body is extruded; after air is extracted from the interior of the storage tank body, nitrogen is filled into a second one-way valve, so that the air pressure of a cavity in the top of a sealing pressing disc is increased, the sealing pressing disc tightly presses materials through air differential pressure, the effect of fixing the materials is achieved, and the risk that the materials fall and are damaged due to shaking in the transportation and carrying process is avoided; and when the sealing pressure plate moves downwards, the upward movement of the sealing pressure plate can be limited under the clamping matching of the limiting buckle teeth and the racks, so that the stability of material fixing is greatly improved.

Description

Technical Field

[0001] The present invention relates to the technical field of storage devices, and in particular to a lithium hexafluorophosphate storage device with a double sealing structure. Background Art

[0002] The special properties of lithium hexafluorophosphate must be considered during storage, and the storage container should have good sealing performance. If it is not stored properly, lithium hexafluorophosphate may decompose and produce hydrofluoric acid. Hydrofluoric acid has a strong acidity and can easily cause corrosion to surrounding objects. Leakage can easily cause economic losses or even harm to personnel.

[0003] For example, application number CN202222241889.5 discloses a lithium hexafluorophosphate storage tank, including a storage tank body, a sealing cover is installed on the top of the storage tank body, and a drying mechanism is provided. A desiccant is placed inside the air-permeable upper cover and the air-permeable lower cover, which can absorb moisture and humidity in the air, so that the inside of the storage tank body is always kept dry. However, the device needs to be replaced regularly when the desiccant expires, which increases the workload during management; and when the storage device is actually used, when it needs to be transported and carried, the lithium hexafluorophosphate inside the storage tank body is tilted and shaken, which is easy to tilt, posing a safety problem. Summary of the invention

[0004] In order to solve the above problems, the present invention proposes a lithium hexafluorophosphate storage device with a double sealing structure to more accurately solve the above problems.

[0005] The present invention is achieved through the following technical solutions: The present invention provides a lithium hexafluorophosphate storage device with a double sealing structure, comprising a storage tank body, wherein the tank wall of the storage tank body is a double-layer structure wall, a buffer cavity is formed between the tank walls of the storage tank body, a tank cover is matched with the top of the storage tank body, and the tank cover is fixed to the upper port of the storage tank body by bolts, and a vertically arranged exhaust cylinder body is integrally formed at the bottom of the inner cavity of the storage tank body, a sealing pressure plate is provided at the bottom of the tank cover, and the sealing pressure plate is arranged at the upper port of the storage tank body, and a plurality of vertically downward guide cylinder seats are provided at the bottom of the tank cover A guide rod is provided at the top of the sealing pressure plate and corresponds to the positions of several guide cylinder seats, and the guide rod is slidably inserted in the guide cylinder seat, a limiting mechanism is provided between the tank cover and the sealing pressure plate, the limiting mechanism includes a rack vertically fixed to the top of the sealing pressure plate, a buckle tooth seat is slidably connected to the rack, a limiting buckle tooth is provided in the middle of the buckle tooth seat, the limiting buckle tooth is transferred to the buckle tooth seat through a rotating shaft, the tooth end of the limiting buckle tooth is clamped with the tooth groove of the rack, a torsion spring is assembled between the rotating shaft connected to the limiting buckle tooth and the buckle tooth seat, and the buckle tooth seat is fixed to the bottom of the tank cover through a support arm.

[0006] Furthermore, a first one-way valve is provided at the bottom of the storage tank body and at a position corresponding to the exhaust cylinder body, the inner end of the first one-way valve is connected to the bottom end of the exhaust cylinder body, and the airway direction of the first one-way valve is one-way exhaust.

[0007] Furthermore, the cylinder wall of the exhaust cylinder is a fine-mesh hole wall, and a steel wire woven filter screen is provided close to the inner wall of the exhaust cylinder, and a moisture-proof cloth is provided close to the steel wire woven filter screen.

[0008] Furthermore, the outer wall of the sealing pressure plate is provided with a plurality of annular sealing grooves, and elastic ring sheets are provided in the annular sealing grooves, and the elastic ring sheets are tightly fitted with the inner wall of the storage tank body.

[0009] Furthermore, a first gas balance seat connecting the inner and outer tank walls is integrally formed on one side of the bottom of the storage tank body, and a first gas balance rod is provided in the first gas balance seat, the first gas balance rod is connected to the first gas balance seat by a thread, the middle part of the first gas balance rod is a cavity, the inner end of the first gas balance rod is provided with a rod plug, the rod plug is embedded in the inner wall of the storage tank body, an air groove is opened on the side wall of the middle cavity of the first gas balance rod, and the outer end of the first gas balance rod is provided with a hexagonal groove.

[0010] Furthermore, a detector seat is provided at the bottom of the storage tank body, a pressure detector is provided on the detector seat, a temperature and humidity detector is provided at the top of the inner cavity of the exhaust cylinder body, and a detection end of the temperature and humidity detector is arranged in the inner cavity of the exhaust cylinder body.

[0011] Furthermore, a second one-way valve is provided on the top of the tank cover, the airway direction of the second one-way valve is one-way air intake, a second gas balance seat is provided on the tank cover, and a second gas balance rod is provided in the second gas balance seat.

[0012] Furthermore, a sealing ring fitting groove is provided on the fitting surface between the tank cover and the top of the storage tank body, an elastic sealing ring assembly groove is provided inside the upper end of the storage tank body, an elastic sealing ring is fitted in the elastic sealing ring assembly groove, and the upper end of the elastic sealing ring is fitted and top-contacted in the sealing ring fitting groove, and a plurality of air holes are provided along the inner wall of the storage tank body, the air holes communicating with the inner cavity of the storage tank body and the bottom of the elastic sealing ring assembly groove.

[0013] Beneficial effects of the present invention: 1. The first one-way valve of the present invention can extract the air contained in the lithium hexafluorophosphate stored in the storage tank body through an external exhaust device, and the first one-way valve can prevent the airflow from flowing back when the exhaust stops, effectively maintaining the airtightness of the inner cavity of the storage tank body, and the exhaust cylinder extending into the storage tank body can fully extract the air contained in the material; the first gas balance rod is rotated by a tool with the inner hexagonal groove until the gas groove on one side of the first gas balance rod is connected with the inside of the storage tank body, at this time, the external air can enter the inner cavity of the storage tank body through the inner cavity of the first gas balance rod, at this time, the inner cavity pressure of the storage tank body is balanced with the external environmental air pressure, and the tank cover can be opened; 2. In the process of extracting air from the inner cavity of the storage tank in Example 1 of the present invention, the guide rod moves downward due to the air pressure, and the lithium hexafluorophosphate stored in the storage tank is squeezed; after the air is extracted from the storage tank, nitrogen is filled into the second one-way valve, so that the air pressure in the cavity on the top of the sealing pressure plate is increased, and the air differential pressure causes the sealing pressure plate to press the material tightly, thereby achieving the effect of fixing the material, and avoiding the risk of falling and damage caused by shaking of the material during transportation and handling; when the sealing pressure plate moves downward, the limit buckle teeth and the rack can be used to limit the upward movement of the sealing pressure plate, thereby greatly improving the stability of fixing the material; 3. After nitrogen is filled into the inner cavity of the storage tank body, the internal air pressure of the storage tank body increases, and the gas is introduced into the bottom of the elastic sealing ring assembly groove through the air vent, thereby pushing the elastic sealing ring upward, so that the elastic sealing ring and the sealing ring fitting groove are tightly in contact with each other, ensuring the sealing performance of the tank cover and the top of the storage tank body. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of a first three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of a second three-dimensional structure of the present invention; Figure 3 for Figure 2 The enlarged view of point A in the middle; Figure 4 for Figure 2 The enlarged view of point B in the middle; Figure 5 It is a front cross-sectional view of the structure of the present invention; Figure 6 for Figure 5 Enlarged view of point C in the middle.

[0015] In the figure: 1, storage tank body; 101, buffer cavity; 1011, elastic sealing ring assembly groove; 1012, elastic sealing ring; 1013, air vent; 102, exhaust cylinder body; 1021, first one-way valve; 1022, temperature and humidity detector; 103, tank cover; 1031, second one-way valve; 1032, sealing ring fitting groove; 104, sealing pressure plate; 1041, elastic ring piece; 105, guide rod; 1051, guide Cylinder seat; 106, limiting mechanism; 1061, rack; 1062, buckle tooth seat; 1063, limiting buckle tooth; 1064, torsion spring; 1065, support arm; 107, first gas balance seat; 1071, first gas balance rod; 1072, rod plug; 1073, gas groove; 1074, hexagonal groove; 108, second gas balance seat; 1081, second gas balance rod; 109, detector seat; 1091, pressure detector. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention. Example

[0017] A lithium hexafluorophosphate storage device with a double sealing structure comprises a storage tank 1, such as Figure 1 As shown, the tank wall of the storage tank body 1 is a double-layer structure wall, and there is a buffer cavity 101 between the tank walls of the storage tank body 1 to prevent the inner structure of the storage tank body 1 from being affected by external impact. The top of the storage tank body 1 is equipped with a tank cover 103, and the tank cover 103 is fixed to the upper port of the storage tank body 1 by bolts. The bottom of the inner cavity of the storage tank body 1 is integrally formed with a vertically arranged exhaust cylinder 102, and a first one-way valve 1021 is provided at the bottom of the storage tank body 1 and corresponding to the position of the exhaust cylinder 102. The inner end of the first one-way valve 1021 is connected with the bottom end of the exhaust cylinder 102, and the airway direction of the first one-way valve 1021 is one-way exhaust. The wall of the exhaust cylinder 102 is a fine sieve hole wall, and a steel wire woven filter screen is provided close to the inner wall of the exhaust cylinder 102, and a moisture-proof cloth is provided close to the steel wire woven filter screen to prevent material leakage when the air inside the storage tank body 1 is extracted. The first one-way valve 1021 can extract the air contained in the lithium hexafluorophosphate stored in the storage tank body 1 through an external vacuum device, and the first one-way valve 1021 can prevent the airflow from flowing back when the vacuum is stopped, thereby effectively maintaining the airtightness of the inner cavity of the storage tank body 1. The exhaust cylinder 102 extending into the storage tank body 1 can comprehensively extract the air contained in the material.

[0018] Combination Figure 2 and Figure 4 As shown, a first gas balance seat 107 connecting the inner and outer tank walls is integrally formed on one side of the bottom of the storage tank body 1, and a first gas balance rod 1071 is provided in the first gas balance seat 107. The first gas balance rod 1071 is connected to the first gas balance seat 107 by threads. The middle of the first gas balance rod 1071 is a cavity. The inner end of the first gas balance rod 1071 is provided with a rod plug 1072. The rod plug 1072 is embedded in the inner wall of the storage tank body 1. The side wall of the middle cavity of the first gas balance rod 1071 is opened. An air groove 1073 is provided, and an inner hexagonal groove 1074 is provided at the outer end of the first air balance rod 1071. The first air balance rod 1071 is rotated by means of a tool in conjunction with the inner hexagonal groove 1074 until the air groove 1073 on one side of the first air balance rod 1071 is connected to the interior of the storage tank body 1. At this time, external air can enter the inner cavity of the storage tank body 1 through the inner cavity of the first air balance rod 1071. At this time, the internal pressure of the inner cavity of the storage tank body 1 is balanced with the external environmental pressure, and the tank cover 103 can be opened.

[0019] The technical scheme in the above-mentioned embodiment of the present application has at least the following technical effects or advantages: the first one-way valve 1021 of the present invention can extract the air contained in the lithium hexafluorophosphate stored in the storage tank body 1 through an external exhaust device, and the first one-way valve 1021 can prevent the airflow from flowing back when the exhaust is stopped, effectively maintaining the airtightness in the inner cavity of the storage tank body 1, and the exhaust cylinder 102 extending into the storage tank body 1 can comprehensively extract the air contained in the material; the first gas balance rod 1071 is rotated by a tool in conjunction with the hexagonal groove 1074 until the gas groove 1073 on one side of the first gas balance rod 1071 is connected to the inside of the storage tank body 1, at this time, the external air can enter the inner cavity of the storage tank body 1 through the inner cavity of the first gas balance rod 1071, and at this time, the internal pressure of the inner cavity of the storage tank body 1 is balanced with the external environmental air pressure, and the tank cover 103 can be opened. Example

[0020] Combination Figure 1 and Figure 2As shown, a sealing pressure plate 104 is provided at the bottom of the tank cover 103, and the sealing pressure plate 104 is arranged at the upper port of the storage tank body 1. The outer wall of the sealing pressure plate 104 is provided with a plurality of annular sealing grooves, and an elastic ring sheet 1041 is provided in the annular sealing groove. The elastic ring sheet 1041 fits tightly with the inner wall of the storage tank body 1, and the sealing pressure plate 104 seals and closes the upper port of the storage tank body 1 once. A plurality of guide cylinder seats 1051 extending vertically downward are provided at the bottom of the tank cover 103, and a guide rod 105 is provided at the top of the sealing pressure plate 104 and at positions corresponding to the plurality of guide cylinder seats 1051, and the guide rod 105 is slidably inserted into the guide cylinder seat 1051 to guide and position the guide rod 105. In Example 1, when the air in the inner cavity of the storage tank body 1 is extracted, the guide rod 105 moves downward due to the air pressure, squeezing the lithium hexafluorophosphate stored in the storage tank body 1, thereby fixing the material and avoiding the risk of falling and being damaged due to shaking of the material during transportation and handling.

[0021] Combination Figure 1 and Figure 5 As shown, a second one-way valve 1031 is provided on the top of the tank cover 103, and the airway direction of the second one-way valve 1031 is one-way air intake. A second gas balance seat 108 is provided on the tank cover 103, and a second gas balance rod 1081 is provided in the second gas balance seat 108, wherein the structure and working principle of the second gas balance rod 1081 are consistent with the first gas balance rod 1071, and the air pressure balance between the inner cavity formed by connecting the storage tank body 1, the tank cover 103 and the sealing pressure plate 104 and the external environment. After the air is extracted from the storage tank body 1, nitrogen is filled into the second one-way valve 1031, so that the air pressure in the top cavity of the sealing pressure plate 104 is increased, and the air differential pressure causes the sealing pressure plate 104 to press the material tightly.

[0022] It is worth mentioning that Figure 2 and Figure 3 As shown, a limiting mechanism 106 is provided between the tank cover 103 and the sealing platen 104, and the limiting mechanism 106 includes a rack 1061 vertically fixed to the top of the sealing platen 104, a slidably connected sprocket seat 1062 on the rack 1061, a limiting sprocket 1063 is provided in the middle of the sprocket seat 1062, the limiting sprocket 1063 is transferred to the sprocket seat 1062 through a rotating shaft, the tooth end of the limiting sprocket 1063 is engaged with the tooth groove of the rack 1061, a torsion spring 1064 is installed between the rotating shaft connected to the limiting sprocket 1063 and the sprocket seat 1062, and the sprocket seat 1062 is fixed to the bottom of the tank cover 103 through a supporting arm 1065. When the sealing platen 104 moves downward, the limiting sprocket 1063 and the rack 1061 are engaged, so that the sealing platen 104 can be limited from moving upward, thereby greatly improving the stability of fixing the material.

[0023] The technical solutions in the above-mentioned embodiments of the present application have at least the following technical effects or advantages: when the air in the inner cavity of the storage tank body 1 is extracted in Example 1 of the present invention, the guide rod 105 moves downward due to the air pressure, and the lithium hexafluorophosphate stored in the storage tank body 1 is squeezed; after the air is extracted from the inside of the storage tank body 1, nitrogen is filled into the second one-way valve 1031, so that the air pressure in the top cavity of the sealing pressure plate 104 is increased, and the air differential pressure causes the sealing pressure plate 104 to press the material tightly, thereby achieving the effect of fixing the material, avoiding the risk of falling and damage caused by shaking of the material during transportation and handling; when the sealing pressure plate 104 moves downward, the limit buckle tooth 1063 and the rack 1061 are engaged, which can limit the sealing pressure plate 104 from moving upward, thereby greatly improving the stability of material fixation. Example

[0024] Combination Figure 1 , Figure 5 and Figure 6 As shown, a sealing ring fitting groove 1032 is provided on the fitting surface between the tank cover 103 and the top of the storage tank body 1, an elastic sealing ring assembly groove 1011 is provided inside the upper end of the storage tank body 1, an elastic sealing ring 1012 is fitted in the elastic sealing ring assembly groove 1011, and the upper end of the elastic sealing ring 1012 is fitted and abutted in the sealing ring fitting groove 1032, and a plurality of air holes 1013 are provided along the inner wall of the storage tank body 1, the air holes 1013 communicate the inner cavity of the storage tank body 1 and the bottom of the elastic sealing ring assembly groove 1011. After nitrogen is filled into the inner cavity of the storage tank body 1, the gas pressure inside the storage tank body 1 increases, and the gas is introduced into the bottom of the elastic sealing ring assembly groove 1011 through the air holes 1013, thereby lifting the elastic sealing ring 1012 upward, so that the elastic sealing ring 1012 and the sealing ring fitting groove 1032 are closely abutted and matched, ensuring the sealing performance of the tank cover 103 and the top of the storage tank body 1.

[0025] like Figure 1 and Figure 5 As shown, a detector seat 109 is provided at the bottom of the storage tank body 1, and a pressure detector 1091 is provided on the detector seat 109. The pressure detector 1091 is used to detect the extrusion pressure on the material inside the storage tank body 1. A temperature and humidity detector 1022 is provided at the top of the inner cavity of the exhaust cylinder body 102. The detection end of the temperature and humidity detector 1022 is set in the inner cavity of the exhaust cylinder body 102. The temperature and humidity detector 1022 is used to detect the temperature and humidity of the material inside the storage tank body 1.

[0026] The technical solution in the above-mentioned embodiment of the present application has at least the following technical effects or advantages: after nitrogen is filled into the inner cavity of the storage tank body 1, the internal air pressure of the storage tank body 1 increases, and the gas is introduced into the bottom of the elastic sealing ring assembly groove 1011 through the air vent 1013, thereby pushing the elastic sealing ring 1012 upward, so that the elastic sealing ring 1012 is tightly in contact with the sealing ring fitting groove 1032, thereby ensuring the sealing of the tank cover 103 and the top of the storage tank body 1.

[0027] Of course, the present invention may have many other implementations. Based on this implementation, other implementations obtained by ordinary technicians in this field without any creative work are all within the scope of protection of the present invention.

Claims

1. A lithium hexafluorophosphate storage device with a double sealing structure, comprising a storage tank (1), characterized in that: The tank wall of the storage tank body (1) is a double-layer structure wall, and a buffer cavity (101) is formed between the tank walls of the storage tank body (1). The top of the storage tank body (1) is matched with a tank cover (103), and the tank cover (103) is fixed to the upper end of the storage tank body (1) by bolts. The bottom of the inner cavity of the storage tank body (1) is integrally formed with a vertically arranged exhaust cylinder (102), and the bottom of the tank cover (103) is provided with a sealing pressure plate (104), and the sealing pressure plate (104) is arranged at the upper end of the storage tank body (1). The bottom of the tank cover (103) is provided with a plurality of guide cylinder seats (1051) that are vertically downward, and a guide rod (105) is provided at the top of the sealing pressure plate (104) and at positions corresponding to the plurality of guide cylinder seats (1051), and the guide rod (105) is slidably inserted in the guide cylinder. In the seat (1051), a limiting mechanism (106) is provided between the tank cover (103) and the sealing pressure plate (104), the limiting mechanism (106) comprising a rack (1061) vertically fixed to the top of the sealing pressure plate (104), a buckle seat (1062) being slidably connected to the rack (1061), a limiting buckle tooth (1063) being provided in the middle of the buckle seat (1062), the limiting buckle tooth (1063) being transferred to the buckle seat (1062) via a rotating shaft, the tooth end of the limiting buckle tooth (1063) being engaged with the tooth groove of the rack (1061), a torsion spring (1064) being arranged between the rotating shaft connected to the limiting buckle tooth (1063) and the buckle seat (1062), and the buckle seat (1062) being fixed to the bottom of the tank cover (103) via a supporting arm (1065).

2. A lithium hexafluorophosphate storage device with a double sealing structure according to claim 1, characterized in that: A first one-way valve (1021) is provided at the bottom of the storage tank (1) and at a position corresponding to the exhaust cylinder (102); the inner end of the first one-way valve (1021) is connected to the bottom end of the exhaust cylinder (102); and the airway direction of the first one-way valve (1021) is one-way exhaust.

3. A lithium hexafluorophosphate storage device with a double sealing structure according to claim 1, characterized in that: The cylinder wall of the exhaust cylinder (102) is a wall with fine sieve holes, and a steel wire woven filter screen is provided in close contact with the inner wall of the exhaust cylinder (102), and a moisture-proof cloth is provided in close contact with the steel wire woven filter screen.

4. The lithium hexafluorophosphate storage device with a double sealing structure according to claim 1, characterized in that: The outer wall of the sealing pressure plate (104) is provided with a plurality of annular sealing grooves, and an elastic ring sheet (1041) is provided in the annular sealing groove. The elastic ring sheet (1041) is tightly fitted to the inner wall of the storage tank body (1).

5. The lithium hexafluorophosphate storage device with a double sealing structure according to claim 1, characterized in that: A first gas balance seat (107) connected to the inner and outer tank walls is integrally formed on one side of the bottom of the storage tank body (1), and a first gas balance rod (1071) is provided in the first gas balance seat (107), the first gas balance rod (1071) is connected to the first gas balance seat (107) by means of a thread, the middle of the first gas balance rod (1071) is a cavity, the inner end of the first gas balance rod (1071) is provided with a rod plug (1072), the rod plug (1072) is fitted and embedded in the inner wall of the storage tank body (1), the side wall of the middle cavity of the first gas balance rod (1071) is provided with an air groove (1073), and the outer end of the first gas balance rod (1071) is provided with an inner hexagonal groove (1074).

6. The lithium hexafluorophosphate storage device with a double sealing structure according to claim 1, characterized in that: A detector seat (109) is provided at the bottom of the storage tank body (1), a pressure detector (1091) is provided on the detector seat (109), a temperature and humidity detector (1022) is provided at the top of the inner cavity of the exhaust cylinder body (102), and a detection end of the temperature and humidity detector (1022) is arranged in the inner cavity of the exhaust cylinder body (102).

7. A lithium hexafluorophosphate storage device with a double sealing structure according to claim 1, characterized in that: A second one-way valve (1031) is provided on the top of the tank cover (103), the air passage direction of the second one-way valve (1031) is one-way air intake, a second gas balance seat (108) is provided on the tank cover (103), and a second gas balance rod (1081) is provided in the second gas balance seat (108).

8. The lithium hexafluorophosphate storage device with a double sealing structure according to claim 1, characterized in that: A sealing ring fitting groove (1032) is provided on the fitting surface between the tank cover (103) and the top of the storage tank body (1); an elastic sealing ring assembly groove (1011) is provided inside the upper end of the storage tank body (1); an elastic sealing ring (1012) is fitted in the elastic sealing ring assembly groove (1011), and the upper end of the elastic sealing ring (1012) is fitted in the sealing ring fitting groove (1032); a plurality of air holes (1013) are provided along the inner wall of the storage tank body (1); the air holes (1013) communicate with the inner cavity of the storage tank body (1) and the bottom of the elastic sealing ring assembly groove (1011).

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