A magnetic liquid sealing device for lithium hexafluorophosphate reactor

Abstract

The present application relates to the field of compound preparation and discloses a magnetic liquid sealing device for a lithium hexafluorophosphate reactor, comprising: a support frame, mounted on the top surface of a reactor; a magnetic liquid sealing transmission assembly, located in the support frame, a transmission shaft of the magnetic liquid sealing transmission assembly extending into the reactor and connected to a stirring member in the reactor; a centering mechanism, mounted on the top surface of the reactor and used to center the magnetic liquid sealing transmission assembly; wherein a horizontally arranged circular pressure plate is provided in the support frame, the outer peripheral surface of the circular pressure plate abuts against the inner wall of the support frame, the circular pressure plate abuts against the magnetic liquid sealing transmission assembly, a screw is fixedly mounted on the support frame, and the screw abuts vertically against the pressure plate. The present application realizes the ability to center the magnetic liquid sealing transmission assembly when the magnetic liquid sealing transmission assembly is in operation, so that the agitator in the reactor can evenly stir the reaction materials, thereby improving the standardization requirements of production.

Description

Technical Field

[0001] The present application relates to the field of compound preparation, and in particular to a magnetic liquid sealing device for a lithium hexafluorophosphate reactor. Background Art

[0002] Lithium hexafluorophosphate is a key raw material for lithium-ion battery electrolytes. The solvent method is the main method for industrial production of lithium hexafluorophosphate. The solvent method uses a reactor as a reactor, dissolves lithium fluoride in anhydrous hydrogen fluoride to form a LiF HF solution, introduces high-purity phosphorus pentafluoride gas, and reacts in the reactor. The mother liquor undergoes low-temperature crystallization, solid-liquid separation, drying and other processes to obtain the lithium hexafluorophosphate product.

[0003] During the production process of the lithium hexafluorophosphate solvent method, the reaction medium is required to undergo a synthetic reaction under a vacuum and high-temperature environment. No external gas or liquid is allowed to enter the reactor during the reaction. This places high demands on the vacuum degree and reliability of the seal. Therefore, a magnetic liquid sealing transmission assembly is installed on the reactor. The magnetic liquid sealing transmission assembly uses a magnetic field to form a liquid ring of magnetic liquid in the sealing gap. The liquid ring can play a sealing role. Due to the special properties of the magnetic liquid, it can adapt to high and low temperature environments and has a long service life.

[0004] The motor output shaft on the reactor is connected to the transmission shaft in the magnetic liquid sealing transmission device, and the transmission shaft in the magnetic liquid sealing transmission assembly is connected to the stirring shaft in the reactor to complete the stirring in the reactor.

[0005] However, in the process of implementing the relevant technical solutions, it was found that at least the following technical problems exist: a support frame needs to be installed on the reactor to support the magnetic liquid sealed transmission assembly and the motor. Since the centering of the drive shaft in the magnetic liquid sealed transmission assembly is maintained by a liquid ring, and the liquid ring is not a solid object, the installation error or deformation of the support frame will further affect the centering of the drive shaft in the magnetic liquid sealed transmission assembly, thereby affecting the standardized production of the reactor. Summary of the Invention

[0006] The present application provides a magnetic liquid sealing device for a lithium hexafluorophosphate reactor, which solves the technical problem in the prior art that the liquid ring formed by the magnetic liquid sealing transmission assembly is not a solid ring, which affects the centering of the transmission shaft in the magnetic liquid sealing transmission assembly. The application realizes the centering setting of the magnetic liquid sealing transmission assembly when the magnetic liquid sealing transmission assembly is in operation, so that the stirring blades in the reactor can evenly stir the reaction materials, thereby improving the standardization requirements of production.

[0007] The present application provides a magnetic liquid sealing device for a lithium hexafluorophosphate reactor, comprising: a support frame, mounted on the top surface of a reactor; a magnetic liquid sealing transmission assembly, located in the support frame, and a transmission shaft of the magnetic liquid sealing transmission assembly extends into the reactor and is connected to a stirring member in the reactor; a centering mechanism, mounted on the top surface of the reactor and used to center the magnetic liquid sealing transmission assembly; wherein a horizontally arranged circular pressure plate is provided in the support frame, the outer peripheral surface of the circular pressure plate abuts against the inner wall of the support frame, the circular pressure plate abuts against the magnetic liquid sealing transmission assembly, a screw is fixedly mounted on the support frame, and the screw vertically abuts against the pressure plate.

[0008] Furthermore, the centering mechanism includes: four positioning columns, which are symmetrically arranged in pairs on both sides of the support frame, and the connecting line between the four positioning columns is rectangular; two arc-shaped splints are respectively attached to both sides of the magnetic liquid sealing transmission assembly; a guide block, each of the positioning columns is equipped with a guide block; a push rod, which is horizontally arranged, and each guide block is inserted with a push rod, and the end of the push rod is fixed to the arc-shaped splint; a synchronous push-and-swing assembly, which is used to close or open the arc-shaped splints on both sides.

[0009] Furthermore, the synchronous push-and-swing assembly includes: a connecting rod group, wherein the connecting rod group is arranged between each of the guide blocks and the arc splint, and the connecting rod group includes a rocker rod 1 hinged on the guide block, a rocker rod 2 hinged to an end of the rocker rod 1 away from the guide block, and a rocker rod 3 hinged to an end of the rocker rod 2 away from the rocker rod 1, and an end of the rocker rod 3 away from the rocker rod 2 is hinged to the arc splint; an intermediate connecting rod, wherein the intermediate connecting rod is arranged between the two groups of connecting rod groups on each of the arc splints, one end of the intermediate connecting rod is hinged to the rocker rod 2 of one group of connecting rod groups, and the other end is hinged to the rocker rod 2 of the other group of connecting rod groups; a push cylinder, which is installed on the support frame, and a push plate is fixed on the push rod of the push cylinder; two pull rods are provided and symmetrically arranged below the arc splints on both sides, one end of the pull rod is hinged to the middle part of the intermediate connecting rod, and the other end is hinged to the end of the push plate.

[0010] Furthermore, an extension bar is fixed to one end of the guide block facing the arc-shaped clamping plate, the extension bars on the guide blocks on both sides are arranged to be inclined towards each other, and the rocker arm is hinged to the guide block.

[0011] Furthermore, a locking strip plate is provided between the two groups of connecting rod groups on each of the arc-shaped splints, and the ends of both ends of the locking strip plate are provided with sockets for inserting the hinge shaft between the rocker arm 2 and the rocker arm 3. The spacing between the sockets at both ends of the locking strip plate is obtained by measuring the spacing between the hinge shafts between the rocker arm 2 and the rocker arm 3 in the connecting rod groups on both sides after the centering mechanism centers the magnetic liquid sealing transmission assembly.

[0012] Furthermore, a support rod is inserted between the two positioning columns on the same side of each arc-shaped clamping plate, and a limiting block that cooperates with the support rod is fixed to the bottom surface of the guide block.

[0013] Furthermore, the side of the guide block is fixed with a minor arc ring that fits with the outer peripheral surface of the positioning column, and the end faces of both ends of the minor arc ring are fixed with extension columns. A locking plate is inserted between the ends of the two extension columns on the minor arc ring, and the positioning column is located between the locking plate, the minor arc ring and the guide block.

[0014] Furthermore, the support frame includes a base ring fixed on the top surface of the reactor, a top ring located above the base ring, and an arc column plate fixed between the base ring and the top ring. The inner arc surface of the arc column plate conflicts with the outer peripheral surface of the circular pressure plate. There are several arc column plates and they are evenly distributed along the circumference of the base ring. The positioning column is located on the outside of the arc column plate.

[0015] Furthermore, supporting wing plates are fixed to both side vertical edges of the arc column plate, and the supporting wing plates extend from the edge of the arc column plate to the edge of the base ring.

[0016] One or more technical solutions provided in this application have at least the following technical effects or advantages:

[0017] Due to the adoption of a centering mechanism, the centering mechanism is used to center the magnetic liquid sealing transmission component, and then the screw is moved downward to press the circular pressure plate downward, so that the magnetic liquid sealing transmission component can be tightly abutted against the upper top surface of the reactor. This realizes that the magnetic liquid sealing transmission component can be centered when the magnetic liquid sealing transmission component is in operation, so that the stirring blades in the reactor can uniformly stir the reaction materials, improves the standardization requirements of production, and solves the technical problem in the prior art that the liquid ring formed by the magnetic liquid sealing transmission component is not a solid ring, which affects the centering of the transmission shaft in the magnetic liquid sealing transmission component. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It mainly illustrates the position diagram of the support frame in the magnetic liquid sealing device for lithium hexafluorophosphate reactor in the embodiment of the present application;

[0019] Figure 2 for Figure 1 A schematic diagram of the middle structure, mainly illustrating the structure of the support frame and the location of the magnetic liquid seal transmission assembly;

[0020] Figure 3 It mainly illustrates the structure of the centering mechanism in the embodiment of the present application;

[0021] Figure 4 It mainly illustrates the structure of the connecting rod group in the embodiment of the present application;

[0022] Figure 5 It mainly illustrates the installation structure of the guide block in the embodiment of the present application;

[0023] In the figure: 100, reactor; 101, motor; 1011, circular pressure plate; 1012, screw; 1, support frame; 11, base ring; 12, top ring; 13, arc column plate; 131, support wing plate; 2, magnetic liquid sealing transmission assembly; 3, centering mechanism; 31, positioning column; 311, support rod; 32, arc splint; 33, guide block; 331, extension bar; 332, limit block; 333, inferior arc ring; 334, extension column; 335, locking plate; 34, push rod; 35, synchronous push-and-swing assembly; 351, connecting rod group; 3511, rocker arm one; 3512, rocker arm two; 3513, rocker arm three; 352, intermediate connecting rod; 353, push cylinder; 3531, push plate; 354, pull rod; 355, locking plate; 356, support plate. DETAILED DESCRIPTION

[0024] In order to better understand the technical solution of the present application, the technical solution of the present application will be described in detail below with reference to the accompanying drawings and specific implementation methods.

[0025] Reference Figure 1-Figure 3 A magnetic liquid sealing device for a lithium hexafluorophosphate reactor includes a support frame 1, a magnetic liquid sealing transmission component 2 and a centering mechanism 3. The support frame 1 is fixedly mounted on the top surface of a reactor 100. The magnetic liquid sealing transmission component 2 is located in the support frame 1 and contacts the top surface of the reactor 100. The transmission shaft of the magnetic liquid sealing transmission component 2 extends into the reactor 100 and is coaxially connected to the stirring blade in the reactor 100. A motor 101 is mounted on the top of the support frame 1. The output shaft of the motor 101 is connected to the input end of the magnetic liquid sealing transmission component 2. The centering mechanism 3 is mounted between the top surface of the reactor 100 and the support frame 1 and can center the magnetic liquid sealing transmission component 2.

[0026] Reference Figure 2 and Figure 3The support frame 1 includes a base ring 11, a top ring 12 and an arc column plate 13. The base ring 11 is horizontally arranged and fixedly installed on the top surface of the reactor 100. The top ring 12 is horizontally arranged above the base ring 11. The inner diameter and outer diameter of the top ring 12 are consistent with the inner diameter and outer diameter of the base ring 11. The arc column plate 13 is vertically arranged. The cross-section of the arc column plate 13 is in the shape of an inferior arc ring 333. The arc column plate 13 is fixed between the lower bottom surface of the top ring 12 and the upper surface of the base ring 11. Four arc column plates 13 are provided. The four arc column plates 13 are evenly arranged along the circumference of the base ring 11. The magnetic liquid sealing transmission assembly 2 is located between the four arc column plates 13. Support wing plates 131 are fixed to the vertical edges on both sides of the arc column plate 13. The support wing plates 131 extend from the edge of the arc column plate 13 to the edge of the base ring 11. A horizontally arranged circular pressure plate 1011 is provided in the support frame 1. The circular pressure plate 1011 is annular and is located above the magnetic liquid sealing transmission component 2. It abuts against the upper top surface of the magnetic liquid sealing transmission component 2. The input end of the magnetic liquid sealing transmission component 2 passes through the circular pressure plate 1011 and is connected to the motor 101. The outer peripheral surface of the circular pressure plate 1011 abuts against the inner wall of the arc column plate 13. A screw 1012 is installed on the inner wall of the arc column plate 13. The bottom end of the screw 1012 abuts against the circular pressure plate 1011. The screw 1012 can press the circular pressure plate 1011 downward, so that the magnetic liquid sealing transmission component 2 can be tightly abutted against the upper top surface of the reactor 100.

[0027] Reference Figure 4 The centering mechanism 3 includes a positioning column 31, an arc-shaped splint 32, a guide block 33, a push rod 34 and a synchronous push-and-swing assembly 35. There are four positioning columns 31, which are symmetrically arranged on both sides of the support frame 1. The positioning columns 31 are fixedly installed on the upper top surface of the reactor 100 and are located on the outside of the arc column plate 13. The line connecting the four positioning columns 31 is rectangular; there are two arc-shaped splints 32, which are respectively attached to both sides of the magnetic liquid sealing transmission assembly 2, and the arc-shaped splints 32 are located on the inner side of the arc column plate 13; each positioning column 31 is installed with a guide block 33; the push rod 34 is a round rod, and each guide block 33 is inserted with a push rod 34, the end of the push rod 34 is fixed on the arc-shaped splint 32, and the push rod 34 is located between the arc-shaped splints 32 on both sides; the synchronous push-and-swing assembly 35 is used to close or open the arc-shaped splints 32 on both sides.

[0028] Reference Figure 5As shown, a support rod 311 is inserted between the two positioning columns 31 on the same side of each arc-shaped clamping plate 32. The support rod 311 is a round rod. The bottom surface of the guide block 33 is fixed with a limit block 332 that cooperates with the support rod 311. The support rod 311 can be used to limit the height position of the guide block 33, so that the height of the two arc-shaped clamping plates 32 used to clamp the magnetic liquid sealing transmission assembly 2 can be kept consistent. In addition, the side of the guide block 33 is fixed with a minor arc ring 333 that fits with the outer peripheral surface of the positioning column 31. Two minor arc rings 333 are fixed to the side of each guide block 33. The end faces of the two ends of the minor arc ring 333 are fixed with extension columns 334. A locking plate 335 is inserted between the ends of the two extension columns 334 on each minor arc ring 333. The positioning column 31 is located between the locking plate 335, the minor arc ring 333 and the guide block 33. The locking plate 335, the extension column 334 and the minor arc ring 333 can be used to limit the horizontal direction of the guide block 33, thereby limiting the horizontal direction of the push rod 34 and limiting the horizontality of the arc clamping plate 32, thereby ensuring the accuracy of the centering process of the centering mechanism 3.

[0029] Reference Figure 4 The synchronous push-and-swing assembly 35 includes a connecting rod group 351, an intermediate connecting rod 352, a push cylinder 353, a pull rod 354, a locking strip plate 355, and a support plate 356. A connecting rod group 351 is provided between each guide block 33 and the arc-shaped clamping plate 32. An extension bar 331 is fixed to the end of the guide block 33 facing the arc-shaped clamping plate 32. The extension bars 331 on the guide blocks 33 on both sides are tilted toward each other. The connecting rod group 351 includes a swing rod 1 3511, a swing rod 2 3512, and a swing rod 3513. One end of the swing rod 1 3511 is hinged to the end of the extension bar 331 away from the end of the guide block 33, and the other end faces the arc-shaped clamping plate 32 and is tilted away from the other side. The first and second rocker arms 3511 and 3512 are respectively hinged to each other, and the first and second rocker arms 3511 are respectively hinged to each other, and the second and third rocker arms 3513 are respectively hinged to each other, and the first and second rocker arms 3511 are respectively hinged to each other, and the second and third rocker arms 3513 are respectively hinged to each other, and the second and third rocker arms 3513 are respectively hinged to each other, and the second and third rocker arms 3513 are respectively parallel to each other.

[0030] An intermediate connecting rod 352 is provided between the two connecting rod groups 351 on each arc-shaped splint 32 . One end of the intermediate connecting rod 352 is hinged to the second rocker rod 3512 of one of the connecting rod groups 351 , and the other end is hinged to the second rocker rod 3512 of the other connecting rod group 351 .

[0031] The support plate 356 is fixed between two of the arc column plates 13. The support plate 356 is arranged horizontally and is located on the vertical plane at the middle position between the arc-shaped clamping plates 32 on both sides; the push cylinder 353 is installed on the support plate 356, and a push plate 3531 is fixed on the push rod 34 of the push cylinder 353. The push plate 3531 is in a strip shape, and its length direction is consistent with the length direction of the push rod 34. The push plate 3531 is slidably set on the support plate 356.

[0032] The pull rod 354 is a strip rod, and there are two pull rods 354. The two pull rods 354 are symmetrically arranged below the arc-shaped clamping plates 32 on both sides. One end of the pull rod 354 is hinged to the middle of the middle connecting rod 352, and the other end is hinged to the end of the push plate 3531.

[0033] When the push cylinder 353 pushes the push plate 3531 and moves the push plate 3531 inward, the push plate 3531 will drive the pull rod 354 to swing, so that the pull rod 354 pushes the middle connecting rod 352 to move in the direction of the guide block 33. The movement of the middle connecting rod 352 will pull the connecting rod group 351 to retract, so that the arc splint 32 can also move in the direction of the guide block 33. Since the push plate 3531 pushes the pull rods 354 on both sides to move synchronously, the arc splints 32 on both sides can move outward at the same time, realizing the open state, and vice versa, they are in the retracted state. The arc splint 32 in the retracted state can align the magnetic liquid sealing transmission assembly 2. Since the connecting rod group 351 is fixed to the positioning column 31 by the guide block 33, the centering accuracy of the centering mechanism 3 will not be affected by the error in the installation position of the support frame 1.

[0034] This application can explain its functional principles through the following operation methods:

[0035] When installing the magnetic liquid sealing device for the lithium hexafluorophosphate reactor, first place the magnetic liquid sealing transmission assembly 2 on the top surface of the lithium hexafluorophosphate reactor 100, and make the transmission shaft of the magnetic liquid sealing transmission assembly 2 coaxially connected to the stirring blade in the reactor 100. Then, fix the support frame 1 on the top surface of the reactor 100, and then install the centering mechanism 3.

[0036] Then start the push cylinder 353 in the centering mechanism 3, so that the push cylinder 353 pulls the push plate 3531 outward, so that the connecting rod group 351 can be in an open state, and the arc-shaped clamping plates 32 on both sides are in a retracted state. The arc-shaped clamping plates 32 in the retracted state can center the magnetic liquid sealing transmission component 2. After the magnetic liquid sealing transmission component 2 is centered, the screw 1012 is rotated so that the screw 1012 can press the circular pressure plate 1011 downward, so that the magnetic liquid sealing transmission component 2 can be tightly abutted against the upper top surface of the reactor 100, thereby realizing that the magnetic liquid sealing transmission component 2 can be centered when the magnetic liquid sealing transmission component 2 is in place, so that the stirring paddles in the reactor 100 can evenly stir the reaction materials, thereby improving the standardization requirements of production.

[0037] Obviously, those skilled in the art may make various changes and modifications to this application without departing from the spirit and scope of this application. Thus, if these modifications and variations of this application fall within the scope of the claims of this application and their equivalents, this application is intended to include these modifications and variations.

[0038] The above is only a preferred specific implementation method of the embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes based on the technical solution and concept of the present application within the technical scope disclosed in the present application, and they should be covered by the scope of protection of the present application.

Claims

1. A magnetic liquid sealing device for a lithium hexafluorophosphate reactor, characterized in that: include: A support frame (1) is mounted on the top surface of the reactor (100); A magnetic liquid sealing transmission component (2) is located in the support frame (1), and a transmission shaft of the magnetic liquid sealing transmission component (2) extends into the reactor (100) and is connected to a stirring element in the reactor (100); A centering mechanism (3) is installed on the top surface of the reactor (100) and is used to center the magnetic liquid sealing transmission assembly (2); The support frame (1) is provided with a horizontally arranged circular pressure plate (1011), the outer peripheral surface of the circular pressure plate (1011) abuts against the inner wall of the support frame (1), the circular pressure plate (1011) abuts against the magnetic liquid sealing transmission component (2), and a screw (1012) is fixedly mounted on the support frame (1), and the screw (1012) vertically abuts against the circular pressure plate (1011); The centering mechanism (3) comprises: Four positioning posts (31) are provided and are symmetrically arranged in pairs on both sides of the support frame (1), and the line connecting the four positioning posts (31) is rectangular; Two arc-shaped clamping plates (32) are provided and respectively adhered to both sides of the magnetic liquid sealing transmission component (2); A guide block (33), each of the positioning columns (31) is equipped with the guide block (33); A push rod (34) is arranged horizontally, and each guide block (33) is provided with the push rod (34), and an end of the push rod (34) is fixed on the arc-shaped clamping plate (32); A synchronous push-and-swing assembly (35) for driving the arc-shaped splints (32) on both sides to close or open; The synchronous push-and-swing assembly (35) comprises: A connecting rod group (351) is provided between each guide block (33) and the arc-shaped clamping plate (32), the connecting rod group (351) comprising a rocker rod 1 (3511) hinged on the guide block (33), a rocker rod 2 (3512) hinged on an end of the rocker rod 1 (3511) away from the guide block (33), and a rocker rod 3 (3513) hinged on an end of the rocker rod 2 (3512) away from the rocker rod 1 (3511), and an end of the rocker rod 3 (3513) away from the rocker rod 2 (3512) is hinged on the arc-shaped clamping plate (32); An intermediate connecting rod (352) is provided between the two connecting rod groups (351) on each of the arc-shaped splints (32), one end of the intermediate connecting rod (352) is hinged to the second swing rod (3512) of one of the connecting rod groups (351), and the other end is hinged to the second swing rod (3512) of the other connecting rod group (351); A push cylinder (353) is mounted on the support frame (1), and a push plate (3531) is fixed on the push rod of the push cylinder (353); Two pull rods (354) are provided and symmetrically arranged below the arc-shaped clamping plates (32) on both sides, one end of the pull rod (354) is hinged to the middle of the middle connecting rod (352), and the other end is hinged to the end of the push plate (3531); An extension bar (331) is fixed to one end of the guide block (33) facing the arc-shaped clamping plate (32), and the extension bars (331) on the guide blocks (33) on both sides are arranged to be inclined toward each other, and the rocker arm (3511) is hinged to the guide block (33).

2. The magnetic liquid sealing device for a lithium hexafluorophosphate reactor according to claim 1, wherein: A locking strip plate (355) is provided between the two connecting rod groups (351) on each of the arc-shaped clamping plates (32), and a socket for inserting the hinge shaft between the second rocker arm (3512) and the third rocker arm (3513) is provided at the ends of both ends of the locking strip plate (355). The spacing between the sockets at both ends of the locking strip plate (355) is obtained by measuring the spacing between the hinge shafts between the second rocker arm (3512) and the third rocker arm (3513) in the connecting rod groups (351) on both sides after the centering mechanism (3) centers the magnetic liquid sealing transmission assembly (2).

3. The magnetic liquid sealing device for a lithium hexafluorophosphate reactor according to claim 1, wherein: A support rod (311) is inserted between the two positioning columns (31) on the same side of each arc-shaped clamping plate (32), and a limiting block (332) that cooperates with the support rod (311) is fixed to the bottom surface of the guide block (33).

4. The magnetic liquid sealing device for a lithium hexafluorophosphate reactor according to claim 2, wherein: A minor arc ring (333) is fixedly connected to the side surface of the guide block (33) and is in contact with the outer peripheral surface of the positioning column (31). Extension columns (334) are fixedly connected to the end faces of both ends of the minor arc ring (333). A locking plate (335) is inserted between the ends of the two extension columns (334) on the minor arc ring (333). The positioning column (31) is located between the locking plate (335), the minor arc ring (333) and the guide block (33).

5. The magnetic liquid sealing device for a lithium hexafluorophosphate reactor according to claim 1, wherein: The support frame (1) includes a base ring (11) fixed on the top surface of the reactor (100), a top ring (12) located above the base ring (11), and an arc column plate (13) fixed between the base ring (11) and the top ring (12), wherein the inner arc surface of the arc column plate (13) abuts against the outer peripheral surface of the circular pressure plate (1011), a plurality of arc column plates (13) are provided and are evenly distributed along a circumference of the base ring (11), and the positioning column (31) is located on the outer side of the arc column plate (13).

6. A magnetic liquid sealing device for a lithium hexafluorophosphate reactor as claimed in claim 5, characterized in that: Support wing plates (131) are fixed to both side vertical edges of the arc column plate (13), and the support wing plates (131) extend from the edge of the arc column plate (13) to the edge of the base ring (11).

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