A dilution device and dilution method for preparing polyamide 66 salt

Abstract

The present invention discloses a dilution device for preparing polyamide 66 salt and a dilution method thereof. The device comprises a mixing and dilution tank, the top of which is provided with a motor rotatably connected to a transmission conical rotating gear disk via a disassembly assembly. A rotating rod is fixed to the bottom of a U-shaped rotating frame. The rotating connecting plate is connected to the rotating rod via a folding rod assembly. The top of the rotating connecting plate is provided with a fixed-angle rotating assembly connected to a fixed conical gear ring. The device relates to the technical field of preparing polyamide 66 salt. After dilution of a hexamethylenediamine solution is completed, the folding rod assembly can be operated via the fixed-angle rotating assembly to separate a stirring rod from the solution in the mixing and dilution tank. The motor is then started. When the rotating connecting plate is operated, the solution adhering to the outside of the stirring rod is removed by centrifugal force, thereby preventing the solution adhering to the outside of the stirring rod from affecting the dilution concentration of the subsequent solution during dilution.

Description

Technical Field

[0001] The present invention relates to the technical field of polyamide 66 salt preparation, in particular to a dilution device and a dilution method for preparing polyamide 66 salt. Background Art

[0002] Polyamide, commonly known as nylon, is a general term for polymers containing amide groups in the repeating units of the macromolecular main chain. Polyamide can be produced by ring-opening polymerization of lactic acid amines, or by condensation polymerization of adipic acid and hexamethylenediamine. Considering both performance and price, the market usage of PA6 and PA66 still accounts for about 90% of the total PA volume, occupying a dominant position. Polyamide 66 salt is an intermediate in the production of polyamide 66 (i.e. nylon 66), i.e., polyamide 66 finished product is obtained by condensation polymerization and dehydration of polyamide 66 salt. Solid polyamide 66 salt is obtained by mixing adipic acid and hexamethylenediamine in a neutralization reactor, placing the mixture in a decolorization tank for activated carbon purification, filtering through a filter, and centrifuging in a centrifuge. Before adding hexamethylenediamine to the neutralization reactor, it needs to be diluted. At this time, hexamethylenediamine needs to be prepared into an approximately 30% aqueous solution with soft water.

[0003] When diluting hexamethylenediamine, ethylenediamine needs to be poured into a mixing and dilution tank, and then soft water can be poured in. It is then stirred by a stirring rod to increase the mixing and dilution efficiency. During the mixing and dilution, some of the hexamethylenediamine aqueous solution will adhere to the stirring rod. If the ethylenediamine aqueous solution on the stirring rod is not handled in time, when another batch of ethylenediamine is diluted, the ethylenediamine aqueous solution attached to the stirring rod will come into contact with the subsequent diluted solution, thereby affecting the concentration of the subsequent ethylenediamine dilution and thus affecting the dilution effect. Summary of the Invention

[0004] The purpose of the present invention is to provide a dilution device and a dilution method for preparing polyamide 66 salt in order to solve the problem that it is inconvenient to separate the solution attached to the stirring rod after the solution is diluted.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a dilution device for preparing polyamide 66 salt and a dilution method thereof, comprising a mixing and dilution tank, a feeding port being opened on the top of the mixing and dilution tank, a rotating connecting disk located on one side of the feeding port being provided on the top of the mixing and dilution tank, a fixed cone gear ring being fixed on the top of the rotating connecting disk, a transmission cone gear disk being rotatably connected to the top of the mixing and dilution tank, an outer side of the transmission cone gear disk being meshed with the fixed cone gear ring, a motor being rotatably connected to the transmission cone gear disk through a disassembly assembly being provided on the top of the mixing and dilution tank, a connecting block being fixed on the bottom of the rotating connecting disk, an outer side of the connecting block being rotatably connected to a U-shaped rotating frame through a rotating shaft, a rotating rod being fixed on the bottom of the U-shaped rotating frame, the rotating connecting disk being connected to the rotating rod through a folding rod assembly, and a fixed-angle rotating assembly connected to the fixed cone gear ring being provided on the top of the rotating connecting disk.

[0006] As a further solution of the present invention: the folding rod assembly includes a rotating movable plate arranged on the inner side of the rotating connecting plate, the bottom of the rotating movable plate is fixed with a guide eccentric column, the outer side of the guide eccentric column is sleeved with a second sleeve slot frame, both sides of the second sleeve slot frame are provided with L-shaped dynamic push plates that penetrate to the bottom of the rotating connecting plate, one side of the L-shaped dynamic push plate is provided with a pushing column, the bottom of the rotating connecting plate is provided with a limited displacement groove that fits with the L-shaped dynamic push plate, the inner side of the connecting fixed block is fixed with a large bevel gear fixed plate, the inner side of the rotating rod is provided with a transmission rod, one end of the transmission rod penetrates to the top of the rotating rod, and a small bevel gear fixed plate is fixed on the top of the transmission rod. The outer side of the small bevel gear fixed plate is meshed with the outer side of the large bevel gear fixed plate. A trapezoidal guide block is fixed on the top of the U-shaped rotating frame, and a connecting guide inclined rail that fits with the push column is provided on the inner side of the trapezoidal guide block. A fixed connection bin is provided on the outer side of the rotating rod, and a stirring rotating rod rotatably connected to the fixed connection bin is provided on the inner side of the rotating rod. A stirring rod is provided at one end of the stirring rotating rod. A first connecting tooth cone block is provided on the outer side of the first connecting tooth cone block and is located in the rotating rod. A second connecting tooth cone block is provided at the end of the transmission rotating rod away from the small bevel gear fixed plate, and the second connecting tooth cone block is meshed with the first connecting tooth cone block. A friction limiter is released on the inner side of the stirring rotating rod, and a counterweight unit is connected to the outer side of the U-shaped rotating frame.

[0007] As a further solution of the present invention: the friction limiter includes a two-way protrusion arranged on the outside of the transmission rotation rod, the outside of the stirring rotation rod is provided with a four-way single-shift groove located on the inside of the fixed connection bin, the outside of the four-way single-shift groove is sleeved with a shift anti-slip disc, the outside of the shift anti-slip disc is connected to an extrusion frame through rotation, one end of the extrusion frame passes through the inner side of the rotation rod, the inside of the rotation rod is provided with a reset spring sleeved on the outside of the extrusion frame, and the inner wall of the fixed connection bin is covered with an anti-slip fixed plate.

[0008] As a further solution of the present invention: the counterweight unit includes a guide block frame fixed to one end of the trapezoidal guide block, the outer side of the guide block frame is sleeved with a counterweight movable block, the inner side of the counterweight movable block is provided with a rotation limiting groove that fits with one end of the guide block frame, one end of the counterweight movable block is fixed with a connecting block plate, one end of the connecting block plate is provided with a first slot frame sleeved on the outer side of the push column, the inner side of the first slot frame is provided with a horizontal guide groove, and the first slot frame is located between the L-shaped movable push plate and the trapezoidal guide block.

[0009] As a further solution of the present invention: the fixed-angle rotating assembly includes a rotating connecting block fixed to the top of the rotating movable disk, and a sleeve pin fixed rod is provided on both sides of the rotating connecting block, and a fixed rotating connecting pin is sleeved on the inner side of the sleeve pin fixed rod, and a limited rotation hole is provided on the inner wall of the fixed cone gear ring, and a connecting guide spring connected to the fixed rotating connecting pin is provided on the inner side of the sleeve pin fixed rod, and a power block is sleeved on the inner side of the rotating connecting block, and a reversing fixed wheel located below the power block is provided on the inner side of the rotating connecting block, and a rotating movable arm is rotatably connected to the top of the power block, a guide rope is provided at one end of the fixed rotating connecting pin, and the other end of the guide rope is connected to the power block, and an observation piece is provided on the inner side of the fixed cone gear ring.

[0010] As a further solution of the present invention: the observation part includes an observation position fixing plate arranged on the inner wall of the top of the fixed cone gear ring, the top of the observation position fixing plate is provided with a guide rotation groove, the inner side of the guide rotation groove is engraved with a position mark, and the top of the rotating connecting block is provided with an observation position moving plate that fits with the guide rotation groove.

[0011] As a further solution of the present invention: the disassembly and connection assembly includes a second threaded plug plate arranged at the bottom of the motor, the top of the mixing and dilution tank is slidably connected with a T-shaped shift plate, the inner side of the T-shaped shift plate is provided with a single threaded rotating rod, the top of the T-shaped shift plate is provided with a first threaded plug plate, the output end of the motor is fixed with a rectangular locking block, the inner side of the transmission conical gear disk is provided with a push spring, one end of the transmission conical gear disk is provided with a guide groove, the inner side of the guide groove is provided with a single moving rod connected to the push spring, one end of the single moving rod is fixed with a rectangular locking block, and one end of the rectangular locking block is provided with a rectangular slot.

[0012] As a further solution of the present invention: the inner side of the T-shaped shift plate is provided with a threaded hole matching the outer side of the single-threaded rotating rod, the top of the mixing and dilution tank is provided with a sliding groove matching the T-shaped shift plate, one end of the rectangular locking block matches the rectangular slot, and the outer wall of the single moving rod fits into the guide groove.

[0013] As a further solution of the present invention: one end of the fixed-rotation connecting pin is equal to the diameter of the rotation-limiting hole, the outer side of the other end of the fixed-rotation connecting pin is in contact with the inner wall of the sleeve pin fixed rod, and the guide rope is connected to the power block through the steering of the reversing fixed wheel.

[0014] The present invention also discloses a dilution device and a dilution method for preparing polyamide 66 salt. The dilution device and the dilution method for preparing polyamide 66 salt include the following steps:

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. By providing a folding rod assembly and a fixed-angle continuous rotation assembly, after the dilution of the hexamethylenediamine solution is completed, the folding rod assembly can be operated by the fixed-angle continuous rotation assembly, so that the stirring rod can be separated from the solution in the mixing and dilution tank. Then, the motor is started. At this time, when the continuous disk is rotated, the solution attached to the outside of the stirring rod is removed under the action of centrifugal force, thereby preventing the solution attached to the outside of the stirring rod from affecting the dilution concentration of the subsequent solution during the subsequent dilution;

[0017] 2. By setting the folding rod assembly, the counterweight unit, the friction limiter, and the fixed angle connecting assembly to rotate the rotating disk, when the rotating disk rotates, it can drive the second set of slot frames limited by the limited displacement fixed groove and the L-shaped dynamic push plate to move through the guide eccentric column. At this time, the push column will push the trapezoidal guide block to rotate. When the U-shaped rotating frame rotates relative to the continuous fixed block, the small bevel gear fixed disk will rotate along the outside of the large bevel gear fixed disk. At this time, the small bevel gear fixed disk will rotate through the transmission rod, the second connecting cone block, the first connecting cone block, and the second connecting cone block. The tooth cone block and the stirring rotary rod drive the stirring rod to rotate, so that the stirring rod rotates to a position parallel to the rotary rod, so that the stirring rod can be separated from the aqueous solution in the mixing and dilution tank. In this process, the gravity on both sides of the connecting block can be adjusted by the counterweight unit, and the friction limiter can provide a certain support for the stirring rod to prevent the gravity of the stirring rod from acting completely on the second tooth cone block and the first tooth cone block, thereby increasing the service life of the second tooth cone block and the first tooth cone block;

[0018] 3. By setting a fixed-angle rotating assembly, when the rotating connecting rod and the stirring rod are folded up, the rotating arm can be pulled first. At this time, the guide rope pulls the fixed rotating connecting pin, so that the fixed rotating connecting pin is separated from the rotation limit hole. When the rotating arm moves to the top of the rotating connecting block, the rotating arm is rotated so that the rotating arm and the power block are at ninety degrees, thereby increasing the torque of the rotating rotating connecting block, thereby reducing the force required to rotate the rotating connecting block, thereby reducing the labor intensity of the staff. When the rotating arm is rotating, the rotating connecting block can be driven by the power block to rotate. After rotating one hundred and eighty degrees, the rotating arm can be inserted into the rotating connecting block again. At this time, the fixed rotating connecting pin will be buckled into the rotation limit hole again under the action of the connecting tension spring, thereby realizing a stable connection between the rotating connecting disk and the rotating connecting disk, thereby increasing the stability of the rotating connecting disk;

[0019] 4. By setting up an observation piece, before using the equipment, you can first observe the position mark in the guide groove, and then observe the position of the stirring rod through the position of the observation plate. When the observation plate covers the positive electrode symbol, it means that the stirring rod in the mixing and dilution tank is in an extended state. Similarly, when the observation plate covers the negative electrode symbol, it means that the stirring rod and the connecting rod are in a folded state. At the same time, the rotation direction of the rotating connecting block can be limited by the guide groove, so that the rotating connecting block can only swing back and forth along the guide groove, which provides convenience for the use of the equipment.

[0020] 5. By setting up the disassembly and connection assembly, when installing the motor, the second threaded insert plate can be connected to the first threaded insert plate by bolts first, so that the T-shaped shift plate supports the motor, and then the single-threaded rotary rod is rotated. When the single-threaded rotary rod is rotated, the T-shaped shift plate can be moved along the single-threaded rotary rod, so that the rectangular locking block moves toward one end of the rectangular clamping block. If the rectangular slot and the rectangular clamping block are not aligned, the rectangular clamping block will be squeezed by the rectangular locking block, so that the single moving rod Retract it into the transmission bevel gear disk along the guide groove, and then start the motor. When the motor is running, it will drive the rectangular locking block to rotate. When the rectangular locking block rotates to a position aligned with the rectangular slot, one end of the rectangular locking block will lose its cover. At this time, the push spring is restored, so that the rectangular slot can be buckled into the outer side of the rectangular locking block under the action of the push spring and the single moving rod, thereby realizing the connection between the rectangular locking block and the transmission bevel gear disk. Similarly, the motor can be quickly disassembled, which provides convenience for subsequent maintenance and maintenance of the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the present invention;

[0022] Figure 2 It is a partial cross-sectional view of the mixing and dilution tank of the present invention;

[0023] Figure 3 It is a structural schematic diagram of the observation piece of the present invention;

[0024] Figure 4 A schematic diagram of the connection between the connecting block and the U-shaped rotating frame of the present invention;

[0025] Figure 5 A partial exploded view of the spin-on rod of the present invention;

[0026] Figure 6 A partial cross-sectional view of the rotating connecting block of the present invention;

[0027] Figure 7 This is a schematic diagram of the internal structure of the rotating disk of the present invention;

[0028] Figure 8 It is a structural schematic diagram of the disassembly and connection assembly of the present invention.

[0029] Figure: 1, mixing and dilution tank; 2, motor; 3, feeding port; 4, rotating connecting plate; 501, single-threaded rotating rod; 502, rotation limiting groove; 503, rotating rod; 504, L-shaped dynamic push plate; 505, fixed connection bin; 506, stirring rod; 507, transmission cone rotating gear plate; 508, fixed cone gear ring; 509, viewing position fixed plate; 510, guide groove; 511, power block; 512, map position mark; 5 13. Connecting fixed block; 514. Transmission rod; 515. Large bevel gear fixed plate; 516. Guide block frame; 517. Guide ramp; 518. First set of slot frames; 519. Counterweight moving block; 520. Connecting block connecting plate; 521. Horizontal guide slot; 522. U-shaped rotating frame; 523. Pushing column; 524. Trapezoidal guide block; 525. Small bevel gear fixed plate; 526. Reset spring; 527. Shift anti-slip Disc; 528, first toothed cone block; 529, second toothed cone block; 530, bidirectional protrusion; 531, stirring and rotating rod; 532, extrusion frame; 533, rotating arm; 534, fixed and rotating connecting pin; 535, guide rope; 536, rotating connecting block; 537, reversing fixed wheel; 538, sleeve pin fixed rod; 539, continuous guide spring; 540, rotation limit hole; 541, viewing plate; 542, rotating dynamic Disk; 543, guide eccentric column; 544, rectangular locking block; 545, single moving rod; 546, push spring; 547, rectangular locking block; 548, guide groove; 549, first threaded insert; 550, T-shaped shift plate; 551, second threaded insert; 552, rectangular slot; 553, limited displacement groove; 554, four-way single displacement groove; 555, anti-slip fixed plate; 556, second set of slot frames. DETAILED DESCRIPTION

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0031] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and should not be understood as indicating or implying relative importance. In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense, for example, they can be fixedly connected, detachably connected, or connected in one piece; they can be mechanically connected or electrically connected; they can be directly connected, or indirectly connected through an intermediate medium, or they can be internal connections between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. The following describes an embodiment of the present invention based on its overall structure.

[0032] See also Figures 1 to 8 In an embodiment of the present invention, a dilution device for preparing polyamide 66 salt and a dilution method thereof are provided, comprising a mixing and dilution tank 1, a feeding port 3 being opened at the top of the mixing and dilution tank 1, a rotating connecting disk 4 located on one side of the feeding port 3 being provided at the top of the mixing and dilution tank 1, a fixed conical gear ring 508 being fixed on the top of the rotating connecting disk 4, a transmission conical gear disk 507 being rotatably connected to the top of the mixing and dilution tank 1, an outer side of the transmission conical gear disk 507 being meshed with the fixed conical gear ring 508, a motor 2 being rotatably connected to the transmission conical gear disk 507 through a disassembly assembly being provided at the top of the mixing and dilution tank 1, a connecting block 513 being fixed at the bottom of the rotating connecting disk 4, an outer side of the connecting block 513 being rotatably connected to a U-shaped rotating frame 522 through a rotating shaft, a rotating rod 503 being fixed at the bottom of the U-shaped rotating frame 522, the rotating connecting disk 4 being connected to the rotating rod 503 through a folding rod assembly, and a fixed angle rotating assembly connected to the fixed conical gear ring 508 being provided on the top of the rotating connecting disk 4.

[0033] In this embodiment: S1: when diluting the hexamethylenediamine solution, the hexamethylenediamine solution can be first poured into the mixing and dilution tank 1, and then soft water is poured in proportion;

[0034] S2: Then, the motor 2 is started. The motor 2 cooperates with the disassembly assembly to make the transmission cone gear plate 507 rotate through the fixed cone gear ring 508 to drive the rotating connecting plate 4 to rotate, thereby causing the stirring rod 506 to stir and mix the mixed liquid in the mixing and dilution tank 1, thereby increasing the dilution efficiency;

[0035] S3: After the dilution of the hexamethylenediamine solution is completed, the folding rod assembly can be operated by the fixed-angle rotating assembly, so that the stirring rod 506 can be separated from the solution in the mixing and dilution tank 1;

[0036] S4: The motor 2 is started again. When the connecting plate 4 is rotated, the solution adhering to the outer side of the stirring rod 506 is removed by the centrifugal force, thereby preventing the solution adhering to the outer side of the stirring rod 506 from affecting the dilution concentration of the subsequent solution when the solution is subsequently diluted.

[0037] S5: The drain valve at the bottom of the mixing and dilution tank 1 can then be opened to allow the diluted solution to be discharged through the drain port at the bottom of the mixing and dilution tank 1 .

[0038] Please refer to Figure 2 、 4 , 5, 7, the folding rod assembly includes a rotating movable disk 542 arranged on the inner side of the rotating connecting disk 4, a guide eccentric column 543 is fixed to the bottom of the rotating movable disk 542, and a second set of slot frames 556 are sleeved on the outer side of the guide eccentric column 543, and an L-shaped movable push plate 504 is provided on both sides of the second slot frame 556, which penetrates to the bottom of the rotating connecting disk 4, and a push column 523 is provided on one side of the L-shaped movable push plate 504. The bottom of the rotating connecting disk 4 is provided with a limited displacement groove 553 that fits with the L-shaped movable push plate 504, and a large bevel gear fixed disk 515 is fixed to the inner side of the connecting block 513. A transmission rotation rod 514 is provided on the inner side of the rotating connecting rod 503, and one end of the transmission rotation rod 514 penetrates to the top of the rotating connecting rod 503, and a small bevel gear fixed disk 525 is fixed on the top of the transmission rotation rod 514. The outer side of the small bevel gear fixed disk 525 is connected to the large bevel gear fixed disk The outer side of the disk 515 is meshed, and a trapezoidal guide block 524 is fixed to the top of the U-shaped rotating frame 522. The inner side of the trapezoidal guide block 524 is provided with a connecting inclined rail 517 that fits with the pushing column 523. A fixed connection bin 505 is provided on the outer side of the rotating rod 503, and a stirring rotating rod 531 rotatably connected to the fixed connection bin 505 is provided on the inner side of the rotating rod 503. A stirring rod 506 is provided at one end of the stirring rotating rod 531. A first toothed cone block 528 is provided on the outer side of the first toothed cone block 528 located in the rotating rod 503. A second toothed cone block 529 is provided at the end of the transmission rotating rod 514 away from the small bevel gear fixed disk 525. The second toothed cone block 529 is meshed with the first toothed cone block 528. A friction limiter is released on the inner side of the stirring rotating rod 531, and a counterweight unit is connected to the outer side of the U-shaped rotating frame 522.

[0039] In this embodiment, when using the device, the rotating disk 542 can be rotated by the fixed angle connecting assembly first. When the rotating disk 542 rotates, the second set of slot frames 556 limited by the limited displacement fixed groove 553 and the L-shaped movable push plate 504 can be driven to move by the guide eccentric column 543. At this time, the push-guide column 523 will push the trapezoidal guide block 524 to rotate, and the push-guide column 523 will move along the continuous guide inclined rail 517. In this way, the trapezoidal guide block 524 can be pushed to rotate when the L-shaped movable push plate 504 moves, so that the trapezoidal guide block 524 can be pushed to rotate when the L-shaped movable push plate 504 moves. The U-shaped rotating frame 522 drives the rotating connecting rod 503 to rotate. When the U-shaped rotating frame 522 rotates relative to the connecting fixed block 513, the small bevel gear fixed plate 525 will rotate along the outer side of the large bevel gear fixed plate 515. At this time, the small bevel gear fixed plate 525 will drive the transmission rotating rod 514 to rotate, so that the transmission rotating rod 514 drives the stirring rod 506 to rotate through the second connecting tooth cone block 529, the first connecting tooth cone block 528, and the stirring rotating connecting rod 531, thereby causing the stirring rod 506 to rotate relative to the rotating connecting rod 503. The bevel teeth of the first connecting cone block 528 are in opposite directions. When the push rod 523 pushes the trapezoidal guide block 524 to rotate 90 degrees, the small bevel gear fixed plate 525 rotates 180 degrees relative to the rotating rod 503, so that the stirring rod 506 is just rotated to a position parallel to the rotating rod 503. In this way, the stirring rod 506 can be separated from the aqueous solution in the mixing and dilution tank 1. In this process, the weight unit can be used to adjust the gravity on both sides of the connecting block 513, and the friction limiter can be used to provide a certain support for the stirring rod 506 to prevent the stirring rod from being shaken. The gravity of 506 acts completely on the second toothed cone block 529 and the first toothed cone block 528, thereby increasing the service life of the second toothed cone block 529 and the first toothed cone block 528. Then, the motor 2 can be started to provide the transmission cone gear plate 507 and the fixed cone gear ring 508 to drive the rotating connecting plate 4 to rotate, so that the solution attached to the surface of the stirring rod 506 is separated from the stirring rod 506 under the action of the centrifugal force generated by the rotation of the rotating connecting plate 4, thereby preventing the aqueous solution on the surface of the stirring rod 506 from affecting the subsequent dilution of hexamethylenediamine.

[0040] Please refer to Figure 2 、 5The friction limiter includes a two-way protrusion 530 arranged on the outside of the transmission rotation rod 514, and the outside of the stirring rotation rod 531 is provided with a four-way single shift groove 554 located on the inside of the fixed connection bin 505. The outside of the four-way single shift groove 554 is sleeved with a shift anti-skid disc 527, and the outside of the shift anti-skid disc 527 is connected to the extrusion frame 532 through rotation. One end of the extrusion frame 532 passes through the inner side of the rotation rod 503, and the inside of the rotation rod 503 is provided with a reset spring 526 sleeved on the outside of the extrusion frame 532, and the inner wall of the fixed connection bin 505 is covered with an anti-skid fixed plate 555.

[0041] In this embodiment, as the bidirectional projection 530 rotates ninety degrees along with the rotating rod 514, the two ends of the bidirectional projection 530 will lose their squeezing of the squeezing frame 532. At this time, the squeezing frame 532 will be restored under the elastic restoring force of the return spring 526, so that the shift anti-skid plate 527 is separated from the anti-skid fixed plate 555. As the rotating rod 514 continues to rotate, the bidirectional projection 530 will squeeze the squeezing frame 532. When the squeezing frame 532 is squeezed, the return spring 526 will be contracted. At the same time, the shift anti-skid plate 527 will be pushed by the squeezing frame 532. The shift anti-skid disc 527 can be brought into contact with the anti-skid fixed plate 555, thereby increasing the force required for the stirring and rotating rod 531 to rotate relative to the rotating rod 503, thereby increasing the stability of the connection between the stirring rod 506 and the rotating rod 503. At the same time, the friction force generated between the shift anti-skid disc 527 and the anti-skid fixed plate 555 can be used to share part of the gravity of the stirring rod 506, thereby preventing the gravity of the stirring rod 506 from acting completely on the second connecting tooth cone block 529, causing the second connecting tooth cone block 529 to produce greater wear, thereby increasing the service life of the second connecting tooth cone block 529 and the first connecting tooth cone block 528.

[0042] Please refer to Figure 2 、 4 The counterweight unit includes a guide block frame 516 fixed to one end of the trapezoidal guide block 524, and a counterweight movable block 519 is sleeved on the outer side of the guide block frame 516. A rotation limiting groove 502 that fits with one end of the guide block frame 516 is provided on the inner side of the counterweight movable block 519. A connecting block plate 520 is fixed to one end of the counterweight movable block 519, and a first set of slot frames 518 that is sleeved on the outer side of the pushing column 523 is provided on one end of the connecting block plate 520. A horizontal guide groove 521 is provided on the inner side of the first set of slot frames 518. The first set of slot frames 518 is located between the L-shaped movable push plate 504 and the trapezoidal guide block 524.

[0043] In this embodiment, when the push-guide post 523 pushes the trapezoidal guide block 524 to rotate, the push-guide post 523 will move along the connecting guide ramp 517. During this process, the push-guide post 523 will push the first slot frame 518 to move, so that the first slot frame 518 moves relative to the guide block frame 516, thereby causing the first slot frame 518 to drive the counterweight moving block 519 to move through the connecting block plate 520, so that the counterweight moving block 519 moves in the direction away from the rotating rod 503 under the limit of the rotation limit groove 502, thereby causing the rotating rod After 503 rotates to a position perpendicular to the connecting block 513, the gravity forces acting on the two ends of the U-shaped rotating frame 522 are opposite, so that the connecting block 513 can rotate with the rotating connecting plate 4, and the forces acting on the two ends of the connection between the connecting block 513 and the U-shaped rotating frame 522 are equal, thereby preventing the rotating rod 503 at a ninety-degree angle to the connecting block 513 from pulling the bottom of the connecting block 513 to one side during the rotation of the connecting block 513, thereby preventing the connecting block 513 from bending, thereby improving the stability of the rotation of the connecting block 513.

[0044] Please refer to Figure 3 、 6 7. The fixed-angle rotating assembly includes a rotating connecting block 536 fixed to the top of the rotating movable disk 542, and sleeve pin fixed rods 538 are provided on both sides of the rotating connecting block 536. The inner side of the sleeve pin fixed rod 538 is sleeved with a fixed rotating connecting pin 534. A limited rotation hole 540 is provided on the inner wall of the fixed cone gear ring 508. A connecting tension spring 539 connected to the fixed rotating connecting pin 534 is provided on the inner side of the sleeve pin fixed rod 538. The inner side of the rotating connecting block 536 is sleeved with a power block 511, and a reversing fixed wheel 537 located below the power block 511 is provided on the inner side of the rotating connecting block 536. The top of the power block 511 is rotatably connected to a rotating arm 533. A guide rope 535 is provided at one end of the fixed rotating connecting pin 534, and the other end of the guide rope 535 is connected to the power block 511. An observation piece is provided on the inner side of the fixed cone gear ring 508.

[0045] When the rotating arm 533 moves to the top of the rotating connecting block 536, the rotating arm 533 is rotated so that the rotating arm 533 and the power block 511 are at a ninety-degree angle, so that one side of the rotating arm 533 is in contact with the top of the rotating connecting block 536, thereby increasing the rotation speed. The torque of the connecting block 536 can then rotate the rotating arm 533. When the rotating arm 533 rotates, the rotating connecting block 536 can be driven to rotate by the power block 511. When the rotating connecting block 536 rotates, the rotating movable disk 542 can be rotated, so as to operate the folding rod assembly, thereby separating the stirring rod 506 and the rotating connecting rod 503 from the liquid surface in the mixing and dilution tank 1. After rotating one hundred and eighty degrees, the rotating arm 533 can be inserted into the rotating connecting block 536 again. At this time, the fixed rotating pin 534 will be buckled into the rotation limiting hole 540 again under the action of the connecting tension spring 539, so as to achieve a stable connection between the rotating connecting disk 4 and the rotating movable disk 542, thereby increasing the stability of the rotating movable disk 542.

[0046] Please refer to Figure 3 、 6 The observation part includes an observation position fixing plate 509 arranged on the inner wall of the top of the fixed cone gear ring 508, a rotation guide groove 510 is provided on the top of the observation position fixing plate 509, and a position mark 512 is engraved on the inner side of the rotation guide groove 510. The top of the rotating connecting block 536 is provided with an observation position movable plate 541 that fits with the rotation guide groove 510.

[0047] In this embodiment: before using the device, you can first view the position mark 512 in the guide groove 510, and then view the position of the stirring rod 506 by observing the position of the positioning plate 541. When the positioning plate 541 covers the positive electrode symbol, it means that the stirring rod 506 in the mixing and dilution tank 1 is in an extended state. Similarly, when the positioning plate 541 covers the negative electrode symbol, it means that the stirring rod 506 and the connecting rod 503 are in a folded state. At the same time, the rotation direction of the rotating connecting block 536 can be limited by the guide groove 510, so that the rotating connecting block 536 can only swing back and forth along the guide groove 510, thereby providing convenience for the use of the device.

[0048] Please refer to Figure 1 、 28. The disassembly and connection assembly includes a second threaded insert 551 arranged at the bottom of the motor 2, a T-shaped shift plate 550 is slidably connected to the top of the mixing and dilution tank 1, a single-threaded rotating rod 501 is arranged on the inner side of the T-shaped shift plate 550, and a first threaded insert 549 is arranged on the top of the T-shaped shift plate 550. A rectangular locking block 544 is fixed to the output end of the motor 2, a push spring 546 is arranged on the inner side of the transmission bevel gear disk 507, and a guide groove 548 is arranged at one end of the transmission bevel gear disk 507. A single moving rod 545 connected to the push spring 546 is arranged on the inner side of the guide groove 548, and a rectangular clamping block 547 is fixed to one end of the single moving rod 545. A rectangular slot 552 is opened at one end of the rectangular clamping block 547.

[0049] When the motor 2 is installed, the second threaded insert 551 can be connected to the first threaded insert 549 by bolts, so that the T-shaped shift plate 550 supports the motor 2, and then the single-threaded rotating rod 501 is rotated. When the single-threaded rotating rod 501 is rotated, the T-shaped shift plate 550 can be moved along the single-threaded rotating rod 501, so that the rectangular locking block 544 can move toward one end of the rectangular locking block 547. If the rectangular slot 552 and the rectangular locking block 544 are not aligned, the rectangular locking block 547 will be squeezed by the rectangular locking block 544, so that the single moving rod 545 will be retracted into the transmission bevel gear disk 507 along the guide groove 548. Then, the motor 2 is started. When the motor 2 is running, it will drive the rectangular locking block 544 to rotate. When the rectangular locking block 544 is rotated to a position aligned with the rectangular slot 552 When the rectangular locking block 547 is in the state of being put into the state, one end of the rectangular locking block 547 will lose its obstruction, and the pushing spring 546 will recover at this time, so that the rectangular slot 552 can be buckled into the outer side of the rectangular locking block 544 under the action of the pushing spring 546 and the single moving rod 545, thereby realizing the connection between the rectangular locking block 544 and the transmission cone gear disk 507. At this time, the transmission cone gear disk 507 will rotate with the rotation of the rectangular locking block 544, thereby causing the transmission cone gear disk 507 to drive the fixed cone gear ring 508 to rotate. The rotation of the fixed cone gear ring 508 can cause the stirring rod 506 to stir the solution in the mixing and dilution tank 1, thereby improving the dilution efficiency. When the stirring rod 506 and the connecting rod 503 are folded, the solution outside the connecting rod 503 and the stirring rod 506 can be removed under the action of centrifugal force by rotating the rotating connecting disk 4, thereby providing convenience for the subsequent dilution of the solution.

[0050] Please refer to Figure 8 The inner side of the T-shaped shift plate 550 is provided with a threaded hole that matches the outer side of the single-threaded rotating rod 501, and the top of the mixing and dilution tank 1 is provided with a slide groove that fits with the T-shaped shift plate 550. One end of the rectangular locking block 544 fits with the rectangular slot 552, and the outer wall of the single moving rod 545 fits with the guide groove 548.

[0051] In this embodiment: by setting this structure, when the single-threaded rotary rod 501 rotates, the T-shaped shift plate 550 is restricted by the top slide groove of the mixing and dilution tank 1 and moves along the single-threaded rotary rod 501, so that the rectangular locking block 544 is fit with the rectangular locking block 547, so that as the motor 2 drives the rectangular locking block 544 to rotate, the rectangular slot 552 is aligned with the rectangular locking block 544, so that the rectangular slot 552 can be buckled into the outer side of the rectangular locking block 544 under the action of the push spring 546, thereby realizing a stable connection between the motor 2 and the transmission bevel gear disk 507.

[0052] Please refer to Figure 6 One end of the fixed rotation pin 534 is equal to the diameter of the rotation limiting hole 540, and the outer side of the other end of the fixed rotation pin 534 is in contact with the inner wall of the sleeve pin fixed rod 538, and the guide rope 535 is connected to the power block 511 through the steering of the reversing fixed wheel 537.

[0053] In this embodiment: by setting this structure, when the power block 511 moves upward relative to the rotating connecting block 536, one end of the guide rope 535 can be pulled, so that the guide rope 535 pulls the fixed rotating connecting pin 534, so that the fixed rotating connecting pins 534 on both sides of the rotating connecting block 536 can be moved toward the central axis of the rotating connecting block 536, so that the fixed cone gear ring 508 loses the limit on the rotating connecting block 536, and then the rotating movable disk 542 can rotate with the rotation of the rotating connecting block 536.

[0054] In combination with the above-mentioned dilution device and dilution method for preparing polyamide 66 salt, a dilution device and dilution method for preparing polyamide 66 salt are provided below, which specifically include the following steps:

[0055] S1: When diluting the hexamethylenediamine solution, first pour the hexamethylenediamine solution into the mixing and dilution tank 1, and then pour soft water in proportion;

[0056] S2: Connect the second threaded insert plate 551 to the first threaded insert plate 549 by means of bolts, so that the T-shaped shift plate 550 supports the motor 2, and then rotate the single-threaded rotary rod 501. When the single-threaded rotary rod 501 rotates, the T-shaped shift plate 550 can be moved along the single-threaded rotary rod 501, so that the rectangular locking block 544 moves toward one end of the rectangular locking block 547. If the rectangular slot 552 and the rectangular locking block 544 are not aligned, the rectangular locking block 547 will be squeezed by the rectangular locking block 544, so that the single moving rod 545 is retracted into the transmission bevel gear disk 507 along the guide groove 548;

[0057] When the motor 2 is started, the rectangular locking block 544 is driven to rotate. When the rectangular locking block 544 is rotated to the position aligned with the rectangular slot 552, one end of the rectangular locking block 547 is unblocked. At this time, the pushing spring 546 is restored, so that the rectangular slot 552 can be buckled into the outer side of the rectangular locking block 544 under the action of the pushing spring 546 and the single moving rod 545, thereby realizing the connection between the rectangular locking block 544 and the transmission cone gear plate 507. At this time, the transmission cone gear plate 507 will rotate with the rotation of the rectangular locking block 544, thereby causing the transmission cone gear plate 507 to drive the fixed cone gear ring 508 to rotate. The rotation of the fixed cone gear ring 508 can cause the connecting block 513 to rotate through the U-shaped rotating frame 522 and the connecting rod 503, thereby causing the stirring rod 506 to stir the solution in the mixing and dilution tank 1, thereby improving the dilution efficiency.

[0058] S4: After the solution is diluted, the rotating arm 533 can be pulled first. At this time, the power block 511 moves up with the movement of the rotating arm 533. In this way, the power block 511 can pull the fixed rotation connecting pin 534 through the reversing fixed wheel 537 and the guide rope 535, so that the fixed rotation connecting pin 534 is separated from the rotation limit hole 540. At this time, the connecting tension spring 539 is squeezed by the fixed rotation connecting pin 534 and contracts. When the rotating arm 533 moves to the upper part of the rotating connecting block 536, the rotating arm 533 moves to the upper part of the rotating connecting block 536. At the same time, the rotating arm 533 is rotated so that the rotating arm 533 and the power block 511 are at a 90-degree angle, so that one side of the rotating arm 533 is in contact with the top of the rotating connecting block 536, thereby increasing the torque of the rotating connecting block 536. Then, the rotating arm 533 can be rotated. When the rotating arm 533 rotates, the rotating connecting block 536 can be driven to rotate by the power block 511. When the rotating connecting block 536 rotates, the rotating disk 542 can be rotated.

[0059] When the L-shaped push plate 504 moves, the trapezoidal guide block 524 is pushed to rotate, and the trapezoidal guide block 524 is driven to rotate by the U-shaped rotating frame 522. When the U-shaped rotating frame 522 rotates relative to the connecting block 513, the small bevel gear fixed plate 525 rotates along the outer side of the large bevel gear fixed plate 515. At this time, the small bevel gear fixed plate 525 drives the transmission rod 514 to rotate, so that the transmission rod 514 drives the stirring rod 514 to rotate through the second connecting tooth cone block 529, the first connecting tooth cone block 528 and the stirring rotating rod 531. When the guide pin 523 pushes the trapezoidal guide block 524 to rotate 90 degrees, the small bevel gear fixed plate 525 rotates 180 degrees relative to the rotating rod 503, so that the stirring rod 506 is just rotated to a position parallel to the rotating rod 503, so that the stirring rod 506 can be separated from the aqueous solution in the mixing and dilution tank 1. In this process, the weight unit can be used to adjust the gravity on both sides of the connecting block 513, and the friction limiter can provide a certain support for the stirring rod 506, so as to prevent the gravity of the stirring rod 506 from acting completely on the second connecting cone block 529 and the first connecting cone block 528, thereby increasing the service life of the second connecting cone block 529 and the first connecting cone block 528.

[0060] S6: After rotating 180 degrees, the rotating arm 533 can be inserted into the rotating connecting block 536 again. At this time, the fixed rotation connecting pin 534 will be buckled into the rotation limiting hole 540 again under the action of the connecting tension spring 539, thereby achieving a stable connection between the rotating connecting plate 4 and the rotating connecting plate 542, thereby increasing the stability of the rotating connecting plate 542;

[0061] S7: Then, the motor 2 is started, so that the motor 2 provides the transmission cone gear plate 507 and the fixed cone gear ring 508 to drive the rotating connecting plate 4 to rotate, so that the solution attached to the surface of the stirring rod 506 is separated from the stirring rod 506 by the centrifugal force generated by the rotation of the rotating connecting plate 4, thereby preventing the aqueous solution on the surface of the stirring rod 506 from affecting the subsequent dilution of hexamethylenediamine;

[0062] S8: The drain valve at the bottom of the mixing and dilution tank 1 can then be opened to allow the diluted solution to be discharged through the drain port at the bottom of the mixing and dilution tank 1 .

[0063] The above is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with this technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solutions and inventive concepts of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A dilution device for preparing polyamide 66 salt, comprising a mixing and dilution tank (1), characterized in that: The top of the mixing and dilution tank (1) is provided with a feeding port (3), the top of the mixing and dilution tank (1) is provided with a rotating connecting disk (4) located on one side of the feeding port (3), the top of the rotating connecting disk (4) is fixed with a fixed cone gear ring (508), the top of the mixing and dilution tank (1) is rotatably connected to a transmission cone gear disk (507), the outer side of the transmission cone gear disk (507) is meshed with the fixed cone gear ring (508), and the top of the mixing and dilution tank (1) is provided with a detachable assembly connected to the transmission cone gear disk (507). The conical gear disc (507) is rotatably connected to the motor (2), the bottom of the rotating connecting disc (4) is fixed with a connecting block (513), the outer side of the connecting block (513) is rotatably connected to a U-shaped rotating frame (522) via a rotating shaft, the bottom of the U-shaped rotating frame (522) is fixed with a rotating rod (503), the rotating connecting disc (4) is connected to the rotating rod (503) via a folding rod assembly, and the top of the rotating connecting disc (4) is provided with a fixed angle rotating assembly connected to a fixed conical gear ring (508); The folding rod assembly includes a rotating movable disk (542) arranged on the inner side of the rotating connecting disk (4), a guide eccentric column (543) is fixed to the bottom of the rotating movable disk (542), a second set of slot frames (556) is sleeved on the outer side of the guide eccentric column (543), and L-shaped movable push plates (504) are arranged on both sides of the second set of slot frames (556) and extend to the bottom of the rotating connecting disk (4), and a push column (523) is arranged on one side of the L-shaped movable push plate (504). The bottom of the rotating connecting plate (4) is provided with a limited displacement groove (553) that fits with the L-shaped push plate (504), and a large bevel gear fixed plate (515) is fixed on the inner side of the connecting fixed block (513). A transmission rotation rod (514) is provided on the inner side of the rotating rod (503), and one end of the transmission rotation rod (514) passes through the top of the rotating rod (503). A small bevel gear fixed plate (525) is fixed on the top of the transmission rotation rod (514), and the outer side of the small bevel gear fixed plate (525) is connected to the The outer side of the large bevel gear fixed disk (515) is engaged, a trapezoidal guide block (524) is fixed on the top of the U-shaped rotating frame (522), the inner side of the trapezoidal guide block (524) is provided with a connecting inclined rail (517) that fits with the push-guide column (523), the outer side of the rotating rod (503) is provided with a fixed connection bin (505), the inner side of the rotating rod (503) is provided with a stirring rotating rod (531) that is rotatably connected to the fixed connection bin (505), and one end of the stirring rotating rod (531) is provided A stirring rod (506) is provided, a first toothed cone block (528) located inside the rotating rod (503) is provided on the outer side of the first toothed cone block (528), a second toothed cone block (529) is provided on the end of the rotating rod (514) away from the small bevel gear fixed plate (525), the second toothed cone block (529) is meshed with the first toothed cone block (528), a friction limiter is provided on the inner side of the stirring rotating rod (531), and a counterweight unit is connected to the outer side of the U-shaped rotating frame (522).

2. A dilution device for preparing polyamide 66 salt according to claim 1, characterized in that: The friction limiter comprises a bidirectional protrusion (530) arranged on the outside of the transmission rotation rod (514); the outside of the stirring rotation rod (531) is provided with a four-way single shift groove (554) located on the inside of the fixed connection bin (505); the outside of the four-way single shift groove (554) is sleeved with a shift anti-skid disc (527); the outside of the shift anti-skid disc (527) is connected to an extrusion frame (532) by rotation; one end of the extrusion frame (532) passes through the inside of the rotation rod (503); the inside of the rotation rod (503) is provided with a reset spring (526) sleeved on the outside of the extrusion frame (532); and the inner wall of the fixed connection bin (505) is paved with an anti-skid fixed plate (555).

3. A dilution device for preparing polyamide 66 salt according to claim 2, characterized in that: The counterweight unit includes a guide block frame (516) fixed to one end of a trapezoidal guide block (524), a counterweight movable block (519) is sleeved on the outer side of the guide block frame (516), a rotation-limiting groove (502) that fits with one end of the guide block frame (516) is provided on the inner side of the counterweight movable block (519), a connecting block connecting plate (520) is fixed to one end of the counterweight movable block (519), and a first slot frame (518) sleeved on the outer side of the pushing column (523) is provided at one end of the connecting block connecting plate (520), a transverse guide groove (521) is provided on the inner side of the first slot frame (518), and the first slot frame (518) is located between the L-shaped movable pushing plate (504) and the trapezoidal guide block (524).

4. A dilution device for preparing polyamide 66 salt according to claim 3, characterized in that: The fixed angle rotation assembly includes a rotating connecting block (536) fixed to the top of the rotating disk (542), a sleeve pin fixed rod (538) is provided on both sides of the rotating connecting block (536), a fixed rotation connecting pin (534) is sleeved on the inner side of the sleeve pin fixed rod (538), a limited rotation hole (540) is provided on the inner wall of the fixed cone gear ring (508), and a connecting tension spring (539) connected to the fixed rotation connecting pin (534) is provided on the inner side of the sleeve pin fixed rod (538). The inner side of the rotating connecting block (536) is sleeved with a power block (511), the inner side of the rotating connecting block (536) is provided with a reversing fixed wheel (537) located below the power block (511), the top of the power block (511) is rotatably connected to a rotating arm (533), one end of the fixed-rotating connecting pin (534) is provided with a guide rope (535), the other end of the guide rope (535) is connected to the power block (511), and an observation piece is provided on the inner side of the fixed cone gear ring (508).

5. A dilution device for preparing polyamide 66 salt according to claim 4, characterized in that: The observation member includes an observation position fixing plate (509) arranged on the inner wall of the top of the fixed cone gear ring (508), a rotation guide groove (510) is provided on the top of the observation position fixing plate (509), and a position mark (512) is engraved on the inner side of the rotation guide groove (510), and a observation position moving plate (541) that fits with the rotation guide groove (510) is provided on the top of the rotating connecting block (536).

6. A dilution device for preparing polyamide 66 salt according to claim 5, characterized in that: The disassembly assembly comprises a second threaded insert plate (551) arranged at the bottom of the motor (2); a T-shaped shift plate (550) is slidably connected to the top of the mixing and dilution tank (1); a single threaded rotating rod (501) is arranged on the inner side of the T-shaped shift plate (550); a first threaded insert plate (549) is arranged on the top of the T-shaped shift plate (550); a rectangular locking block (544) is fixed to the output end of the motor (2); a push spring (546) is arranged on the inner side of the transmission conical gear disk (507); a guide groove (548) is arranged at one end of the transmission conical gear disk (507); a single moving rod (545) connected to the push spring (546) is arranged on the inner side of the guide groove (548); a rectangular clamping block (547) is fixed to one end of the single moving rod (545); and a rectangular slot (552) is opened at one end of the rectangular clamping block (547).

7. A dilution device for preparing polyamide 66 salt according to claim 6, characterized in that: The inner side of the T-shaped shift plate (550) is provided with a threaded hole matching the outer side of the single-threaded rotating rod (501), the top of the mixing and dilution tank (1) is provided with a sliding groove matching the T-shaped shift plate (550), one end of the rectangular locking block (544) is matched with the rectangular slot (552), and the outer wall of the single moving rod (545) is fitted with the guide groove (548).

8. A dilution device for preparing polyamide 66 salt according to claim 7, characterized in that: One end of the fixed-rotation connecting pin (534) has a diameter equal to that of the rotation-limiting hole (540), and the outer side of the other end of the fixed-rotation connecting pin (534) is in contact with the inner wall of the sleeve pin fixed rod (538). The guide rope (535) is connected to the power block (511) through the steering of the reversing fixed wheel (537).

9. A dilution method for preparing polyamide 66 salt, characterized in that: The dilution device for preparing polyamide 66 salt according to claim 8 comprises the following steps: S1: When diluting the hexamethylenediamine solution, first pour the hexamethylenediamine solution into the mixing and dilution tank (1), and then pour soft water in proportion; S2: Then, the motor (2) is started, and the driving cone gear disc (507) is driven to rotate the rotating connecting disc (4) through the fixed cone gear ring (508) by the cooperation between the motor (2) and the disassembly assembly, so that the stirring rod (506) stirs and mixes the mixed liquid in the mixing and dilution tank (1); S3: After the dilution of the hexamethylenediamine solution is completed, the folding rod assembly is operated by the fixed-angle rotating assembly, so that the stirring rod (506) is separated from the solution in the mixing and dilution tank (1); S4: The motor (2) is started again. When the rotating disk (4) is in operation, the solution attached to the outside of the stirring rod (506) is removed under the action of centrifugal force; S5: Then, the drain valve at the bottom of the mixing and dilution tank (1) is opened, so that the diluted solution is discharged through the drain port at the bottom of the mixing and dilution tank (1).

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