Feeding device of reaction equipment for preparing lithium hexafluorophosphate

Abstract

The invention relates to a feeding device of reaction equipment for preparing lithium hexafluorophosphate, which comprises a group of blanking hoppers which are respectively arranged on two sides of the top of a reaction kettle body, fixed plug bodies are respectively arranged on the bottom sides of the blanking hoppers in a lifting way, and the fixed plug bodies are respectively upwards and fixedly connected with corresponding connecting rods; the connecting rods are movably connected to the discharging hopper through corresponding elastic connecting pieces. The dispersing and discharging assembly comprises a group of arc-shaped material guiding grooves formed in the lower side of the fixed plug body, the arc-shaped material guiding grooves are connected to a stirring shaft through first connecting rods, and a horizontal material dispersing assembly and a vertical material dispersing assembly are correspondingly arranged on the bottom sides of the arc-shaped material guiding grooves according to the height; and the driving mechanism comprises a traction assembly connected to the bottom side of the fixed plug body and a driving assembly connected to the top of the arc-shaped guide groove. According to the device, materials can be effectively and uniformly dispersed and discharged, so that the discharging uniformity of the materials is greatly improved.

Description

Technical Field

[0001] This invention relates to a feeding device, specifically a feeding device for a reaction apparatus for preparing lithium hexafluorophosphate, which can effectively and quantitatively add phosphorus pentachloride and lithium fluoride used in the lithium hexafluorophosphate reaction to the reaction apparatus as needed, so that they can form a uniform mixture with anhydrous hydrogen fluoride. Background Technology

[0002] With the rapid development of new energy vehicles and the low-carbon economy, there are now higher requirements for the purity and manufacturing process of lithium hexafluorophosphate. As a result, the current development trend of lithium hexafluorophosphate is towards high-purity lithium hexafluorophosphate (purity of 99.95% or higher).

[0003] As a fine chemical product, high-purity lithium hexafluorophosphate has high standards for all aspects of its production process, and its industrial production threshold is relatively high. The existing synthesis of lithium hexafluorophosphate usually adopts the hydrogen fluoride solvent method, and its specific synthesis process is as follows: S1, fluorination of phosphorus pentachloride, solid phosphorus pentachloride is slowly added to an excess of anhydrous hydrogen fluoride cooled to a low temperature (usually below -20°C) to cause the following reaction: PCl5 + 5HF → PF5 + 5HCl, and the product PF5 is dissolved in anhydrous hydrogen fluoride by temperature and pressure control; S2, complexation of phosphorus pentafluoride with lithium fluoride, after the first step reaction is completed, the low temperature and pressure are maintained, and dry lithium fluoride is added in batches to the HF solution containing PF5 to cause the following reaction: PF5 + LiF → LiPF6. Because the reaction of phosphorus pentachloride with anhydrous hydrogen fluoride is highly exothermic, the addition of phosphorus pentachloride must be slow and uniform to ensure the smooth progress of the first reaction step. In the second reaction step, the complete reaction of lithium fluoride is crucial to achieving the designed purity; therefore, the uniformity of lithium fluoride feeding also needs to be controlled. Current methods for quantitative feeding of phosphorus pentachloride and lithium fluoride involve controlling the opening and closing of feeding valves to achieve batch feeding, followed by mixing with a stirring mechanism. Even with each feeding in a small range, the problem of fixed-point batch feeding still exists, leading to significant exothermic reactions at the feeding location and making it extremely difficult to ensure the uniformity of mixing between materials.

[0004] Therefore, the research objective of this invention is to design a feeding device for the reaction equipment used in the preparation of lithium hexafluorophosphate that can effectively and uniformly disperse and feed materials without affecting the feeding process, thereby significantly improving the uniformity of material feeding, and thus effectively ensuring the smooth progress of the reaction process and ensuring that the materials can be effectively and fully reacted. Summary of the Invention

[0005] In view of the technical problems existing in the prior art, the present invention provides a feeding device for a reaction apparatus for preparing lithium hexafluorophosphate, which can effectively solve the technical problems existing in the prior art.

[0006] The technical solution of this invention is: A feeding device for a reaction apparatus used in the preparation of lithium hexafluorophosphate, the reaction apparatus comprising a reaction vessel body and a stirring shaft rotatably mounted within the reaction vessel body, the stirring shaft being driven by a corresponding drive motor, the feeding device comprising: A set of feeding hoppers are respectively installed on the top two sides of the reactor body. The bottom side of each feeding hopper is equipped with a fixed plug that closes at the top and abuts against its feeding port. Each fixed plug is fixedly connected to a corresponding connecting rod facing upward. The connecting rod is movably connected to the feeding hopper through a corresponding elastic connector. The dispersing assembly includes a set of arc-shaped material guide channels disposed on the lower side of the fixed plug body. The middle part of the arc-shaped material guide channel is raised upward and connected to the stirring shaft through a corresponding first connecting rod. The bottom side of the arc-shaped material guide channel is respectively provided with corresponding horizontal material dispersing components and vertical material dispersing components at different heights. The driving mechanism includes a pulling component connected to the bottom side of the fixed plug and a driving component connected to the top of the arc-shaped guide trough. When the arc-shaped guide trough rotates past the bottom side of the fixed plug, the driving component drives the pulling component downward, and the fixed plug leaves the discharge port of the hopper. The material in the hopper is output through the gap between the fixed plug and the discharge port of the hopper and enters the corresponding arc-shaped guide trough. As the arc-shaped guide trough rotates with the stirring shaft, the material entering the arc-shaped guide trough is continuously and evenly discharged to the upper side of the horizontal material distribution component.

[0007] The horizontal bulk material assembly includes shovel-type mixing blades disposed on the bottom side of the arc-shaped material guide trough. The shovel-type mixing blades are connected to the mixing shaft via corresponding second connecting rods, and the middle portions of the shovel-type mixing blades are respectively positioned opposite the bottom end of the arc-shaped material guide trough.

[0008] Along the rotation direction of the stirring shaft, the bottom side of the shovel-type stirring blade is arranged downwards; along the bottom side of the shovel-type stirring blade, the width of the shovel-type stirring blade increases progressively, and its top is arranged in an arc shape.

[0009] The vertical bulk material assembly includes a set of mixing blades inclinedly arranged on both sides of the lower part of the shovel-type mixing blades. The mixing blades are connected to the mixing shaft through corresponding third connecting rods. Along the mixing direction of the mixing shaft, the inclination directions of the set of mixing blades are opposite.

[0010] The pulling assembly includes a set of inverted L-shaped pulling rods fixed to the bottom side of the fixed plug body, and corresponding guide wheels are respectively rotatably installed on the bottom side of the set of inverted L-shaped pulling rods; the driving assembly includes a set of connecting plates fixed to the top of the arc-shaped guide groove, and driving blocks with inclined bottom surfaces are respectively fixed to the top of the set of connecting plates facing outward. When the driving block moves past the position of the guide wheel, the inclined surface of the driving block forms a downward pulling drive on the guide wheel.

[0011] The connecting plate is made of spring steel plate. The bent surface of the connecting plate is arranged in the same direction as the side of the arc-shaped guide groove. The bottom end of the driving block is fixed with a corresponding protrusion. The inner end of the guide wheel is provided with a corresponding arc chamfer. When the guide wheel passes the bottom end of the driving block, the arc chamfer of the guide wheel contacts the protrusion and pushes the protrusion inward, causing the connecting plate to bend inward.

[0012] After the drive block leaves the position of the guide wheel, the drive block swings continuously under the elastic force of the connecting plate, and the vibration generated by the continuous swing is transmitted to the arc-shaped guide groove.

[0013] The bottom side of the fixed plug is provided with a feeding guide with a diameter greater than its maximum width. The bottom end of the feeding guide is narrowed to a diameter smaller than the width of the arc-shaped feeding groove. The feeding guide is fixed to a set of inverted L-shaped traction rods.

[0014] The elastic connector is a helical spring, and a corresponding end plate is fixed to the top of the connecting rod. The elastic connector is sleeved around the connecting rod and located between the end plate and the hopper.

[0015] The feed inlet of the hopper is equipped with a corresponding cover plate that can be opened and closed.

[0016] Compared with the prior art, the advantages and positive effects of the present invention are as follows: 1) This invention is equipped with a set of feeding hoppers. During the reaction process, anhydrous hydrogen fluoride required for the reaction is first quantitatively added to the reactor body. Then, a quantitative amount of phosphorus pentachloride is added to one of the feeding hoppers. The drive motor is started to drive the stirring shaft to rotate. When the arc-shaped guide chute rotates past the position of the feeding hopper, that is, when it passes the bottom side of the fixed plug, the drive component set at the top of the arc-shaped guide chute drives the pulling component at the bottom side of the fixed plug, causing the fixed plug to move downward and leave the feeding port of the feeding hopper. Thus, the phosphorus pentachloride in the feeding hopper is output through the gap between the fixed plug and the feeding port of the feeding hopper and enters the corresponding arc-shaped guide chute. As the arc-shaped guide chute rotates with the stirring shaft, the phosphorus pentachloride enters the arc-shaped guide chute. Phosphorus pentachloride is continuously and uniformly fed to the upper side of the horizontal bulk material assembly. During the mixing of anhydrous hydrogen fluoride, the shovel-type stirring blades of the horizontal bulk material assembly effectively guide the anhydrous hydrogen fluoride upwards and diffuse it horizontally, further dispersing the uniformly fed phosphorus pentachloride and ensuring more uniform contact between the phosphorus pentachloride and the anhydrous hydrogen fluoride. Finally, the upward and downward turning action of a set of mixing blades effectively further mixes the phosphorus pentachloride evenly dispersed on top of the anhydrous hydrogen fluoride into the overall anhydrous hydrogen fluoride, thereby significantly improving the contact rate and mixing uniformity between phosphorus pentachloride and anhydrous hydrogen fluoride. This prevents excessive localized heat release from the fixed-point feeding reaction and improves reaction efficiency. Similarly, a measured amount of lithium fluoride is added to another hopper, and the above actions are repeated to ensure uniform feeding and mixing of lithium fluoride, thereby ensuring that its reaction rate can be effectively improved.

[0017] Furthermore, without affecting the feeding process, phosphorus pentachloride and lithium fluoride are effectively and uniformly dispersed and fed, thereby significantly improving the uniformity of material feeding. This effectively ensures the smooth progress of the reaction process and ensures that lithium fluoride can be fully reacted, thus improving the purity of the product.

[0018] 2) The pulling assembly of the present invention includes a set of inverted L-shaped pulling rods fixed to the bottom side of the fixed plug body. The bottom side of the set of inverted L-shaped pulling rods is respectively rotatably mounted with corresponding guide wheels. The driving assembly includes a set of connecting plates fixed to the top of the arc-shaped guide trough. The top of the set of connecting plates is respectively fixed with a driving block with an inclined bottom surface. When the driving block moves past the position of the guide wheel, the inclined surface of the driving block can form a downward pulling drive on the guide wheel, so as to ensure that the arc-shaped guide trough of the present invention can smoothly form a downward pulling drive on the fixed plug body when rotating past the position of the hopper, thus ensuring the practical effect of the present invention.

[0019] 3) The connecting plate of this invention is made of spring steel plate, with its bent surface aligned with the side of the arc-shaped guide trough. A corresponding protrusion is fixed downwards at the bottom end of the driving block, and corresponding arc-shaped chamfers are provided at the inner ends of the guide wheels. When the guide wheels pass the bottom end of the driving block, the arc-shaped chamfers of the guide wheels contact the protrusions and push them inwards, thereby driving the connecting plate to bend inwards. In this way, after the driving block leaves the guide wheel, it can continuously swing under the elastic force of the connecting plate, and the vibration generated by this continuous swing is transmitted to the arc-shaped guide trough. This ensures the smooth discharge of materials stored in the arc-shaped guide trough, further ensuring the practical effect of this invention.

[0020] 4) Due to the arrangement of the traction and drive components, a large gap exists between the discharge port of the hopper and the arc-shaped guide trough. This can prevent the material from being accurately discharged into the arc-shaped guide trough, leading to a risk of material accumulating inside the reactor vessel. To address this, the present invention further provides a discharge conduit with a diameter greater than its maximum width on the bottom side of the fixed plug. The bottom end of the discharge conduit narrows to a diameter smaller than the width of the arc-shaped guide trough. This discharge conduit is fixed to a set of inverted L-shaped traction rods. The discharge conduit effectively guides the discharged material, ensuring its smooth and concentrated storage in the corresponding arc-shaped guide trough, further guaranteeing the practical effectiveness of the invention. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of the present invention.

[0022] Figure 2 This is a diagram showing the usage state of the present invention.

[0023] Figure 3 for Figure 2 A sectional view.

[0024] Figure 4 This is an assembly diagram of the drive mechanism.

[0025] Figure 5 for Figure 4 A sectional view.

[0026] Figure 6 This is an assembly diagram of the fixed plug, the traction assembly, and the feed conduit.

[0027] Figure 7 This is a schematic diagram of the assembly of the drive component and the arc-shaped guide trough.

[0028] In the attached diagram: 1. Reactor body; 2. Stirring shaft; 3. Drive motor; 4. Feed hopper; 5. Fixed plug; 6. Connecting rod; 7. Elastic connector; 8. Dispersing and feeding assembly; 8. Arc-shaped guide trough; 801. First connecting rod; 802. Horizontal dispersing assembly; 9. Shovel-type stirring blade; 901. Second connecting rod; 902. Vertical dispersing assembly; 10. Mixing blade; 1001. Third connecting rod; 1002. Drive mechanism; 11. Pulling assembly; 1101. Inverted L-shaped pulling rod; 11011. Guide wheel; 11012. Drive assembly; 1102. Connecting plate; 11022. Drive block; 12. Protrusion; 13. Arc chamfer; 14. Feed guide pipe; 15. End plate; 16. Cover plate. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0030] refer to Figure 1-7 A feeding device for a reaction apparatus used in the preparation of lithium hexafluorophosphate, the reaction apparatus comprising a reaction vessel body 1 and a stirring shaft 2 rotatably mounted within the reaction vessel body 1, the stirring shaft 2 being driven by a corresponding drive motor 3, the feeding device comprising: A set of feeding hoppers 4 are respectively installed on the top two sides of the reactor body 1. The bottom side of each feeding hopper 4 is equipped with a fixed plug 5 that closes at the top and abuts against its feeding port. The fixed plug 5 is fixedly connected to a corresponding connecting rod 6 facing upward. The connecting rod 6 is movably connected to the feeding hopper 4 through a corresponding elastic connector 7. The dispersing and feeding assembly 8 includes a set of arc-shaped material guide channels 801 disposed on the lower side of the fixed plug body 5. The middle part of the arc-shaped material guide channel 801 is raised upward and connected to the stirring shaft 2 through a corresponding first connecting rod 802. The bottom side of the arc-shaped material guide channel 801 is respectively provided with corresponding horizontal material dispersing assembly 9 and vertical material dispersing assembly 10 at different heights. The driving mechanism 11 includes a pulling component 1101 connected to the bottom side of the fixed plug 5 and a driving component 1102 connected to the top of the arc-shaped guide trough 801. When the arc-shaped guide trough 801 rotates past the bottom side of the fixed plug 5, the driving component 1102 drives the pulling component 1101 downward. The fixed plug 5 leaves the discharge port of the hopper 4. The material in the hopper 4 is output through the gap between the fixed plug 5 and the discharge port of the hopper 4 and enters the corresponding arc-shaped guide trough 801. During the rotation of the arc-shaped guide trough 801 with the stirring shaft 2, the material entering the arc-shaped guide trough 801 is continuously and evenly discharged to the upper side of the horizontal material distribution component 9.

[0031] The horizontal bulk material assembly 9 includes a shovel-type stirring blade 901 disposed on the bottom side of the arc-shaped material guide trough 801. The shovel-type stirring blade 901 is connected to the stirring shaft 2 through a corresponding second connecting rod 902. The middle part of the shovel-type stirring blade 901 is respectively facing the bottom end of the arc-shaped material guide trough 801.

[0032] Along the rotation direction of the stirring shaft 2, the bottom side of the shovel-type stirring blade 901 is arranged downwards; along the bottom side of the shovel-type stirring blade 901, the width of the shovel-type stirring blade 901 increases progressively, and its top is arranged in an arc shape.

[0033] The vertical bulk material assembly 10 includes a set of mixing blades 1001 inclinedly arranged on both sides of the lower part of the shovel-type mixing blade 901. The mixing blades 1001 are connected to the mixing shaft 2 through corresponding third connecting rods 1002. Along the mixing direction of the mixing shaft 2, the inclination directions of the set of mixing blades 1001 are opposite.

[0034] This invention includes a set of feeding hoppers 4. During the reaction process, anhydrous hydrogen fluoride required for the reaction is first quantitatively added to the reaction vessel 1. Then, a quantitative amount of phosphorus pentachloride is added to one of the feeding hoppers 4. The drive motor 3 is started to drive the stirring shaft 2 to rotate. When the arc-shaped guide chute 8 rotates past the position of the feeding hopper 4, that is, past the bottom side of the fixed plug 5, the drive component 1102 set at the top of the arc-shaped guide chute 8 drives the pulling component 1101 at the bottom side of the fixed plug 5, causing the fixed plug 5 to move downward away from the feeding port of the feeding hopper 4. Thus, the phosphorus pentachloride in the feeding hopper 4 is output through the gap between the fixed plug 5 and the feeding port of the feeding hopper 4 and enters the corresponding arc-shaped guide chute 8. As the arc-shaped guide chute 8 rotates with the stirring shaft 2, the phosphorus pentachloride... Phosphorus pentachloride is continuously and uniformly fed into the arc-shaped feed trough 8 and fed to the upper side of the horizontal distribution assembly 9. During the stirring process of anhydrous hydrogen fluoride, the shovel-type stirring blades 901 of the horizontal distribution assembly 9 effectively guide the anhydrous hydrogen fluoride upwards and diffuse it horizontally, further dispersing the uniformly fed phosphorus pentachloride and ensuring a more uniform contact between the phosphorus pentachloride and the anhydrous hydrogen fluoride. Finally, under the upward and downward turning action of a set of mixing blades 1001, the phosphorus pentachloride evenly dispersed on the upper part of the anhydrous hydrogen fluoride is effectively mixed into the overall anhydrous hydrogen fluoride, thereby significantly improving the contact rate and mixing uniformity between phosphorus pentachloride and anhydrous hydrogen fluoride, preventing localized excessive heat release from the fixed-point feeding reaction and improving reaction efficiency. Similarly, a measured amount of lithium fluoride is added to another feed hopper 4, and the above actions are repeated to ensure the uniformity of lithium fluoride feeding and mixing, thereby ensuring that its reaction rate can be effectively improved.

[0035] Furthermore, without affecting the feeding process, phosphorus pentachloride and lithium fluoride are effectively and uniformly dispersed and fed, thereby significantly improving the uniformity of material feeding. This effectively ensures the smooth progress of the reaction process and ensures that lithium fluoride can be fully reacted, thus improving the purity of the product.

[0036] The pulling assembly 1101 includes a set of inverted L-shaped pulling rods 11011 fixed to the bottom side of the fixed plug body 5. The bottom side of the set of inverted L-shaped pulling rods 11011 is respectively rotatably mounted with corresponding guide wheels 11012. The driving assembly 1102 includes a set of connecting plates 11021 fixed to the top of the arc-shaped guide groove 801. The top of the set of connecting plates 11021 is respectively fixed with driving blocks 11022 with inclined bottom surfaces. When the driving block 11022 moves past the position of the guide wheel 11012, the inclined surface of the driving block 11022 forms a downward pulling drive on the guide wheel 11012.

[0037] Through the specific structural design of the traction component 1101 and the drive component 1102, it is ensured that the arc-shaped guide groove 8 of the present invention can smoothly pull the fixed plug 5 downward when it rotates past the position of the hopper 4, thereby ensuring the practical effect of the present invention.

[0038] The connecting plate 11021 is made of spring steel plate. The bending surface of the connecting plate 11021 is arranged in the same direction as the side of the arc-shaped guide groove 801. The bottom end of the driving block 11022 is fixedly connected with a corresponding protrusion 12 facing downward. The inner end of the guide wheel 11012 is respectively provided with a corresponding arc chamfer 13. When the guide wheel 11012 passes the bottom end of the driving block 11022, the arc chamfer 13 of the guide wheel 11012 contacts the protrusion 12 and pushes the protrusion 12 inward, causing the connecting plate 11021 to bend inward.

[0039] After the drive block 11022 leaves the position of the guide wheel 11012, the drive block 11022 swings continuously under the elastic force of the connecting plate 11021, and the vibration generated by the continuous swing is transmitted to the arc-shaped guide groove 801.

[0040] By elastically setting the connecting plate 11021 and aligning its bent surface with the side of the arc-shaped guide trough, it is effectively ensured that the drive assembly 1102 does not bend when driving the traction assembly 1101, thus preventing adverse effects on the material feeding process. Then, with the cooperation of the protrusion 12 and the arc chamfer 13 of the guide wheel 11012, the connecting plate 11021 is effectively bent from the side, and under the counterweight of the drive block 11022, the swing effect of the connecting plate 11021 is effectively maintained, thereby forming a reasonable amount of vibration to ensure the smooth feeding of materials stored in the arc-shaped guide trough.

[0041] Due to the arrangement of the traction and drive components, a large gap exists between the discharge port of the hopper and the arc-shaped guide trough. This can prevent the material from being accurately discharged into the arc-shaped guide trough, potentially leading to material swarming into the reactor vessel. To address this, the present invention further provides a discharge conduit 14 with a diameter greater than its maximum width on the bottom side of the fixed plug 5. The bottom end of the discharge conduit 14 narrows to a diameter smaller than the width of the arc-shaped guide trough 801. The discharge conduit 14 is fixed to a set of inverted L-shaped traction rods 11011. The discharge conduit effectively guides the discharged material, ensuring its smooth and concentrated storage in the corresponding arc-shaped guide trough 8, further guaranteeing the practical effectiveness of the invention.

[0042] The elastic connector 7 is a helical spring. A corresponding end plate 15 is fixed to the top of the connecting rod 6. The elastic connector 7 is sleeved around the connecting rod 6 and located between the end plate and the hopper 4. A corresponding cover plate 16 is installed at the feed inlet of the hopper 4, which can be opened and closed.

[0043] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments that can be applied to other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the protection scope of the present invention.

Claims

1. A feeding device for a reaction apparatus for preparing lithium hexafluorophosphate, the reaction apparatus comprising a reaction vessel body (1) and a stirring shaft (2) rotatably mounted within the reaction vessel body (1), the stirring shaft (2) being driven by a corresponding drive motor (3), characterized in that, The feeding device includes: A set of feeding hoppers (4) are respectively installed on the top two sides of the reactor body (1). The bottom side of each feeding hopper (4) is equipped with a fixed plug (5) that closes at the top and abuts against its feeding port. The fixed plug (5) is fixedly connected to a corresponding connecting rod (6) facing upward. The connecting rod (6) is movably connected to the feeding hopper (4) through a corresponding elastic connector (7). The dispersing assembly (8) includes a set of arc-shaped guide channels (801) disposed on the lower side of the fixed plug (5). The middle part of the arc-shaped guide channel (801) is raised upward and connected to the stirring shaft (2) through a corresponding first connecting rod (802). The bottom side of the arc-shaped guide channel (801) is respectively provided with corresponding horizontal dispersing assemblies (9) and vertical dispersing assemblies (10) at different heights. The driving mechanism (11) includes a pulling component (1101) connected to the bottom side of the fixed plug (5) and a driving component (1102) connected to the top of the arc-shaped guide trough (801). When the arc-shaped guide trough (801) rotates past the bottom side of the fixed plug (5), the driving component (1102) drives the pulling component (1101) to move downward. The fixed plug (5) leaves the discharge port of the hopper (4). The material in the hopper (4) is output through the gap between the fixed plug (5) and the discharge port of the hopper (4) and enters the corresponding arc-shaped guide trough (801). During the process of the arc-shaped guide trough (801) rotating with the stirring shaft (2), the material entering the arc-shaped guide trough (801) is continuously and evenly discharged to the upper side of the horizontal material distribution component (9).

2. The feeding device for a reaction apparatus for preparing lithium hexafluorophosphate according to claim 1, characterized in that, The horizontal bulk material assembly (9) includes a shovel-type stirring blade (901) disposed on the bottom side of the arc-shaped guide trough (801). The shovel-type stirring blade (901) is connected to the stirring shaft (2) through a corresponding second connecting rod (902). The middle part of the shovel-type stirring blade (901) is directly opposite the bottom end of the arc-shaped guide trough (801).

3. The feeding device for a reaction apparatus for preparing lithium hexafluorophosphate according to claim 2, characterized in that, Along the rotation direction of the stirring shaft (2), the bottom side of the shovel-type stirring blade (901) is arranged facing downwards; along the bottom side of the shovel-type stirring blade (901) facing upwards, the width of the shovel-type stirring blade (901) increases progressively, and its top is arranged in an arc shape.

4. The feeding device for a reaction apparatus for preparing lithium hexafluorophosphate according to claim 3, characterized in that, The vertical bulk material assembly (10) includes a set of mixing blades (1001) inclinedly arranged on both sides of the lower part of the shovel-type mixing blade (901). The mixing blades (1001) are connected to the mixing shaft (2) through a corresponding third connecting rod (1002). Along the mixing direction of the mixing shaft (2), the inclination directions of the set of mixing blades (1001) are opposite.

5. The feeding device for a reaction apparatus for preparing lithium hexafluorophosphate according to claim 1, characterized in that, The pulling assembly (1101) includes a set of inverted L-shaped pulling rods (11011) fixed to the bottom side of the fixed plug (5). The bottom side of the set of inverted L-shaped pulling rods (11011) is respectively rotatably mounted with corresponding guide wheels (11012). The driving assembly (1102) includes a set of connecting plates (11021) fixed to the top of the arc-shaped guide groove (801). The top of the set of connecting plates (11021) is respectively fixed with a driving block (11022) with an inclined bottom surface. When the driving block (11022) moves past the position of the guide wheel (11012), the inclined surface of the driving block (11022) forms a downward pulling drive on the guide wheel (11012).

6. The feeding device for a reaction apparatus for preparing lithium hexafluorophosphate according to claim 5, characterized in that, The connecting plate (11021) is made of spring steel plate. The bending surface of the connecting plate (11021) is arranged in the same direction as the side of the arc-shaped guide groove (801). The bottom end of the driving block (11022) is fixed with a corresponding protrusion (12) facing downward. The inner end of the guide wheel (11012) is respectively provided with a corresponding arc chamfer (13). When the guide wheel (11012) passes the bottom end of the driving block (11022), the arc chamfer (13) of the guide wheel (11012) contacts the protrusion (12) and pushes the protrusion (12) inward, so that the connecting plate (11021) bends inward.

7. The feeding device for a reaction apparatus for preparing lithium hexafluorophosphate according to claim 6, characterized in that, After the drive block (11022) leaves the position of the guide wheel (11012), the drive block (11022) swings continuously under the elastic force of the connecting plate (11021), and the vibration generated by the continuous swing is transmitted to the arc-shaped guide groove (801).

8. The feeding device for a reaction apparatus for preparing lithium hexafluorophosphate according to claim 5, characterized in that, The bottom side of the fixed plug (5) is provided with a feeding guide (14) with a diameter greater than its maximum width. The bottom end of the feeding guide (14) is narrowed to a diameter smaller than the width of the arc-shaped guide groove (801). The feeding guide (14) is fixed to a set of inverted L-shaped pull rods (11011).

9. The feeding device for a reaction apparatus for preparing lithium hexafluorophosphate according to claim 1, characterized in that, The elastic connector (7) is a helical spring. The top of the connecting rod (6) is fixed with a corresponding end plate (15). The elastic connector (7) is sleeved around the connecting rod (6) and located between the end plate and the hopper (4).

10. The feeding device for a reaction apparatus for preparing lithium hexafluorophosphate according to claim 1, characterized in that, The feed inlet of the hopper (4) is equipped with a corresponding cover plate (16) that can be opened and closed.

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