Flame retardant production rectifying still

Abstract

A flame retardant production rectifying still relates to the technical field of stirring devices and comprises a rectifying still main body, a main shaft is vertically and rotatably arranged in the rectifying still main body, rotating pipes with opposite rotating directions are rotatably sleeved on the main shaft, the lower end part of the main shaft extends into a liquid phase area and is fixedly connected with lower stirring blades, and the lower end parts of the rotating pipes are positioned in a gas phase area and are fixedly connected with upper stirring blades. A driving shaft is fixedly connected to the outer top of the rectifying still main body and is connected with the upper end part of the main shaft through an overrun clutch. The stirring structure for the flame retardant rectifying still solves the problems that a stirring structure for the flame retardant rectifying still in the prior art cannot perform layered stirring according to a gas phase region and a liquid phase region, and cannot select to perform independent stirring or linkage stirring on the gas phase region or the liquid phase region according to actual conditions, so that the use range is reduced, and the rectifying efficiency of the rectifying still is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of stirring devices, in particular to a rectification kettle for producing flame retardants. Background Art

[0002] Flame retardants are additives used to improve the flame resistance of materials, that is, to prevent materials from being ignited and inhibit the spread of flames. With the rapid development of the national economy, flame retardants are playing an increasingly important role in people's production and life. In recent years, with the increasing awareness of safety and environmental protection, the use of halogen-free, low-smoke, low-toxic, and highly efficient environmentally friendly phosphate flame retardants has become more and more widespread.

[0003] In order to improve the purity of flame retardant products, it is usually necessary to distill the synthetic flame retardant crude product. The distillation process is to make the evaporating gas phase contact with the descending liquid phase in countercurrent. In the two-phase contact, the gas phase and the liquid phase exchange heat, so that the volatile components in the descending liquid phase are continuously volatilized to form a gas phase. Therefore, the closer to the top of the tower, the higher the concentration of volatile components in the gas phase, and the closer to the bottom of the tower, the higher the product concentration in the liquid phase. In the process of distillation and purification, the gas phase needs to be continuously heated, which consumes a lot of energy. The existing distillation and purification equipment is complex and energy-intensive, which increases the production cost of the enterprise. In addition, the concentration of the product after distillation is low and the expected effect cannot be achieved.

[0004] The existing stirring drive device of the distillation kettle is composed of four parts: a motor, a reducer, a bracket, and a transmission shaft. The transmission shaft and the stirring rod are fixedly connected by a connecting head flange. When the driving device is not in use, the transmission shaft and the stirring rod are disassembled for easy storage. During the installation and subsequent disassembly of the transmission shaft and the stirring rod, a wrench is required to install and disassemble multiple bolts. The operation process is relatively cumbersome, which wastes time and manpower and reduces the assembly efficiency.

[0005] The prior art discloses a patent with publication number CN211158638U, which includes a motor, a reducer is provided at the bottom end of the motor, a bracket is connected to the bottom end flange of the reducer, a transmission shaft is provided at the bottom of the reducer, and the transmission shaft is located inside the bracket, the transmission shaft is connected to a stirring rod through a connecting head, the connecting head includes a fixed M block and a fixed N block, the fixed M block is located at the top of the fixed N block, and the connecting ends of the fixed M block and the fixed N block are symmetrically provided with T-slots; through the designed T-slots and guide columns on the fixed N block, the transmission shaft and the stirring rod are initially fixed on the fixed N block, and then the fixed M block is fixedly connected to the fixed N block by a nut, so that the transmission shaft and the stirring rod are fixed inside the connecting head. This design makes the installation and disassembly process of the transmission shaft and the stirring rod simple and convenient, saves time and energy, and improves assembly efficiency.

[0006] As the existing technologies including the above patents are used, their shortcomings are gradually exposed, mainly in the following aspects:

[0007] The stirring structure used in the existing flame retardant distillation kettle cannot perform stratified stirring according to the gas phase zone and the liquid phase zone, and cannot choose to stir the gas phase zone or the liquid phase zone independently or in conjunction with each other according to actual conditions, which reduces the scope of use and further reduces the distillation efficiency of the distillation kettle.

[0008] In summary, the prior art obviously has inconveniences and defects in practical use, so it is necessary to improve it. Utility Model Content

[0009] In view of the defects in the prior art, the utility model solves the problem that the stirring structure used in the flame retardant distillation kettle in the traditional technology cannot perform stratified stirring according to the gas phase zone and the liquid phase zone, and cannot choose to stir the gas phase zone or the liquid phase zone independently or in linkage according to the actual situation, which reduces the scope of use and further reduces the distillation efficiency of the distillation kettle.

[0010] In order to solve the above problems, the utility model provides the following technical solutions:

[0011] The flame retardant production distillation kettle comprises a distillation kettle body, wherein a main shaft is vertically rotatably arranged in the distillation kettle body, a rotating tube rotatably mounted on the main shaft and arranged in the opposite direction, the lower end of the main shaft extends into the liquid phase region and is fixedly connected with a lower stirring blade, and the lower end of the rotating tube is located in the gas phase region and is fixedly connected with an upper stirring blade.

[0012] A driving shaft is fixedly connected to the outer top of the distillation kettle body, and the driving shaft is connected to the upper end of the main shaft through an overrunning clutch.

[0013] An upper bevel gear is fixedly connected to the driving shaft, and a lower bevel gear is fixedly connected to the outer wall of the rotating tube near the upper end. The upper bevel gear and the lower bevel gear are meshed through a linkage gear, and the linkage gear is also used to mesh or disengage with the upper bevel gear and the lower bevel gear through a clutch assembly.

[0014] As an optimized solution, the clutch assembly includes a horizontally arranged telescopic cylinder, and the linkage gear is rotatably mounted on the telescopic end of the telescopic cylinder through a buffer assembly.

[0015] As an optimized solution, the buffer assembly includes a turntable, one end of which is fixedly connected to the side wall of the linkage gear, the other end of the turntable is fixedly connected to a sliding column, the other end of the sliding column is slidably inserted in a sliding sleeve, and the other end of the sliding sleeve is fixedly connected to the telescopic end of the telescopic cylinder.

[0016] As an optimized solution, a compression spring is mounted on the slide column, and two ends of the compression spring are respectively against the end of the rotating disk and the end of the sliding sleeve.

[0017] As an optimized solution, the sliding sleeve is provided with a rectangular sliding hole along the axial direction, and a sliding block constrained in the rectangular sliding hole is fixedly connected to the side wall of the sliding column.

[0018] As an optimized solution, the upper end of the main shaft is fixedly connected to the inner ring of the overrunning clutch, the outer ring of the overrunning clutch is fixedly connected to a connecting seat, and the upper end of the connecting seat is fixedly connected to the driving shaft.

[0019] As an optimized solution, the upper end of the distillation kettle body is fixedly connected to a bracket by using a lower flange group, and the bracket is fixedly provided with an avoidance hole for avoiding the buffer component.

[0020] As an optimized solution, a side frame is fixedly connected to the side wall of the bracket, and the cylinder end of the telescopic cylinder is fixedly connected to the side frame.

[0021] As an optimized solution, the upper end of the bracket is fixedly connected to a driving machine by an upper flange group, and the output shaft of the driving machine is connected to the driving shaft through a coupling.

[0022] As an optimized solution, an upper support seat for supporting the main shaft is fixedly connected to the bracket.

[0023] As an optimized solution, a lower support seat for supporting the rotating tube is fixedly connected to the bracket.

[0024] Compared with the prior art, the beneficial effects of the utility model are:

[0025] By connecting the drive shaft and the main shaft with an overrunning clutch, the main shaft is driven to rotate when the drive shaft rotates forward, and the main shaft uses the lower stirring blade to stir the material in the liquid phase. When the drive shaft rotates in the reverse direction, the overrunning clutch cannot be used to drive the main shaft to rotate.

[0026] The driving shaft and the rotating tube are connected by the upper bevel gear, the lower bevel gear and the linkage gear, and the telescopic cylinder is used to control the linkage gear to mesh or separate with the upper bevel gear and the lower bevel gear, so that the driving shaft rotates and the rotating tube is driven to rotate at the same time, thereby stirring the material in the gas phase zone;

[0027] When the driving shaft is reversed, the telescopic cylinder is used to control the linkage gear to mesh with the upper bevel gear and the lower bevel gear, so that the upper stirring blade can be driven to rotate alone;

[0028] When the driving shaft rotates forward, the telescopic cylinder is used to control the linkage gear to separate from the upper bevel gear and the lower bevel gear, so that the lower stirring blade can be driven to rotate alone;

[0029] When the driving shaft rotates forward, the telescopic cylinder is used to control the linkage gear to mesh with the upper bevel gear and the lower bevel gear, so that the lower stirring blade and the upper stirring blade can be driven to rotate simultaneously, thereby increasing the scope of use and improving the distillation efficiency of the distillation kettle. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the specific implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the specific implementation or the prior art description. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, each element or part is not necessarily drawn according to the actual scale.

[0031] Figure 1 It is a schematic diagram of the structure of the utility model;

[0032] Figure 2 It is a structural schematic diagram of the buffer component of the utility model.

[0033] In the figure: 1-distillation kettle body; 2-main shaft; 3-rotating tube; 4-lower stirring blade; 5-upper stirring blade; 6-driving machine; 7-bracket; 8-telescopic cylinder; 9-coupling; 10-driving shaft; 11-upper bevel gear; 12-lower bevel gear; 13-linkage gear; 14-turntable; 15-sliding column; 16-sliding sleeve; 17-rectangular sliding hole; 18-side frame; 19-overrunning clutch; 20-connecting seat; 21-upper support seat; 22-lower support seat; 23-compression spring. DETAILED DESCRIPTION

[0034] The following embodiments of the technical solution of the utility model are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the utility model, and are therefore only used as examples, and cannot be used to limit the protection scope of the utility model.

[0035] like Figure 1 and Figure 2 As shown, the flame retardant production distillation kettle comprises a distillation kettle body 1, a main shaft 2 is vertically rotatable in the distillation kettle body 1, a rotating tube 3 is rotatably mounted on the main shaft 2 and arranged in the opposite direction, the lower end of the main shaft 2 extends into the liquid phase region and is fixedly connected with a lower stirring blade 4, the lower end of the rotating tube 3 is located in the gas phase region and is fixedly connected with an upper stirring blade 5,

[0036] A driving shaft 10 is fixedly connected to the outer top of the distillation kettle body 1, and the driving shaft 10 is connected to the upper end of the main shaft 2 through an overrunning clutch 19.

[0037] An upper bevel gear 11 is fixedly connected to the driving shaft 10, and a lower bevel gear 12 is fixedly connected to the outer wall of the rotating tube 3 near the upper end. The upper bevel gear 11 and the lower bevel gear 12 are meshed with each other through a linkage gear 13, and the linkage gear 13 is also used to mesh with or disengage with the upper bevel gear 11 and the lower bevel gear 12 through a clutch assembly.

[0038] The clutch assembly includes a telescopic cylinder 8 arranged horizontally, and a linkage gear 13 is rotatably mounted on the telescopic end of the telescopic cylinder 8 through a buffer assembly.

[0039] The buffer assembly includes a turntable 14 , one end of which is fixedly connected to the side wall of the linkage gear 13 , and the other end of the turntable 14 is fixedly connected to a slide post 15 , the other end of the slide post 15 is slidably inserted into a sleeve 16 , and the other end of the sleeve 16 is fixedly connected to the telescopic end of the telescopic cylinder 8 .

[0040] A compression spring 23 is sleeved on the slide post 15 , and two ends of the compression spring 23 are respectively against the ends of the rotating disk 14 and the sliding sleeve 16 .

[0041] The sliding sleeve 16 is provided with a rectangular sliding hole 17 along the axial direction, and a sliding block constrained in the rectangular sliding hole 17 is fixedly connected to the side wall of the sliding column 15 .

[0042] The upper end of the main shaft is fixedly connected to the inner ring of the overrunning clutch 19 , the outer ring of the overrunning clutch 19 is fixedly connected to a connecting seat 20 , and the upper end of the connecting seat 20 is fixedly connected to the driving shaft 10 .

[0043] The upper end of the distillation kettle body 1 is fixedly connected to a bracket 7 by means of a lower flange assembly, and the bracket 7 is fixedly connected to an avoidance hole for avoiding a buffer component.

[0044] A side frame 18 is fixedly connected to the side wall of the bracket 7, and the cylinder end of the telescopic cylinder 8 is fixedly connected to the side frame 18.

[0045] The upper end of the bracket 7 is fixedly connected to the driving machine 6 by means of an upper flange assembly, and the output shaft of the driving machine 6 is connected to the driving shaft 10 via a coupling 9 .

[0046] An upper support seat 21 for supporting the main shaft is fixedly connected to the bracket 7 .

[0047] A lower support seat 22 for supporting the rotating tube 3 is fixedly connected to the bracket 7 .

[0048] The working principle of this device is:

[0049] By connecting the drive shaft 10 and the main shaft 2 by means of an overrunning clutch 19, it is realized that when the drive shaft 10 rotates forward, the main shaft 2 is driven to rotate, and the main shaft 2 uses the lower stirring blade 4 to stir the material in the liquid phase region. When the drive shaft 10 rotates in the reverse direction, the overrunning clutch 19 cannot be used to drive the main shaft 2 to rotate.

[0050] The driving shaft 10 and the rotating tube 3 are connected by the upper bevel gear 11, the lower bevel gear 12 and the linkage gear 13, and the telescopic cylinder 8 is used to control the linkage gear 13 to mesh or separate with the upper bevel gear 11 and the lower bevel gear 12, so that the driving shaft 10 rotates and drives the rotating tube 3 to rotate at the same time, thereby stirring the material in the gas phase zone;

[0051] When the driving shaft 10 is reversed, the telescopic cylinder 8 is used to control the linkage gear 13 to mesh with the upper bevel gear 11 and the lower bevel gear 12, so that the upper stirring blade 5 can be driven to rotate alone;

[0052] When the driving shaft 10 rotates forward, the telescopic cylinder 8 is used to control the linkage gear 13 to separate from the upper bevel gear 11 and the lower bevel gear 12, so that the lower stirring blade 4 can be driven to rotate alone;

[0053] When the drive shaft 10 rotates forward, the telescopic cylinder 8 is used to control the linkage gear 13 to mesh with the upper bevel gear 11 and the lower bevel gear 12, so that the lower stirring blade 4 and the upper stirring blade 5 can be driven to rotate simultaneously, thereby improving the scope of use and the distillation efficiency of the distillation kettle.

[0054] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model, and they should all be included in the scope of the claims and specification of the utility model.

Claims

1. Flame retardant production distillation kettle, characterized by: The distillation kettle comprises a main body (1), wherein a main shaft (2) is vertically rotatably arranged in the main body (1), a rotating tube (3) arranged in the opposite direction is rotatably mounted on the main shaft (2), the lower end of the main shaft (2) extends into the liquid phase region and is fixedly connected to a lower stirring blade (4), the lower end of the rotating tube (3) is located in the gas phase region and is fixedly connected to an upper stirring blade (5), A driving shaft (10) is fixedly connected to the outer top of the distillation kettle body (1), and the driving shaft (10) is connected to the upper end of the main shaft (2) via an overrunning clutch (19). An upper bevel gear (11) is fixedly connected to the driving shaft (10), and a lower bevel gear (12) is fixedly connected to the outer wall of the rotating tube (3) near the upper end. The upper bevel gear (11) and the lower bevel gear (12) are meshed with each other through a linkage gear (13). The linkage gear (13) is also used to mesh with or separate from the upper bevel gear (11) and the lower bevel gear (12) through a clutch assembly.

2. The flame retardant production distillation kettle according to claim 1, characterized in that: The clutch assembly comprises a telescopic cylinder (8) arranged horizontally, and the linkage gear (13) is rotatably mounted on the telescopic end of the telescopic cylinder (8) through a buffer assembly.

3. The flame retardant production distillation kettle according to claim 2, characterized in that: The buffer assembly comprises a rotating disk (14), one end of which is fixedly connected to the side wall of the linkage gear (13), the other end of which is fixedly connected to a sliding column (15), the other end of which is slidably inserted into a sliding sleeve (16), and the other end of which is fixedly connected to the telescopic end of the telescopic cylinder (8).

4. The flame retardant production distillation kettle according to claim 3, characterized in that: A compression spring (23) is sleeved on the slide column (15), and two ends of the compression spring (23) respectively abut against the end of the rotating disk (14) and the end of the sliding sleeve (16).

5. The flame retardant production distillation kettle according to claim 4, characterized in that: The sliding sleeve (16) is provided with a rectangular sliding hole (17) along the axial direction, and a sliding block constrained in the rectangular sliding hole (17) is fixedly connected to the side wall of the sliding column (15).

6. The flame retardant production distillation kettle according to claim 5, characterized in that: The upper end of the main shaft is fixedly connected to the inner ring of the overrunning clutch (19), the outer ring of the overrunning clutch (19) is fixedly connected to a connecting seat (20), and the upper end of the connecting seat (20) is fixedly connected to the driving shaft (10).

7. The flame retardant production distillation kettle according to claim 6, characterized in that: The upper end of the rectification kettle body (1) is fixedly connected to a bracket (7) by means of a lower flange assembly, and a relief hole for avoiding the buffer component is fixedly connected to the bracket (7).

8. The flame retardant production distillation kettle according to claim 7, characterized in that: A side frame (18) is fixedly connected to the side wall of the bracket (7), and the cylinder body end of the telescopic cylinder (8) is fixedly connected to the side frame (18).

9. The flame retardant production distillation kettle according to claim 8, characterized in that: The upper end of the bracket (7) is fixedly connected to a driving machine (6) by means of an upper flange assembly, and the output shaft of the driving machine (6) is connected to the driving shaft (10) via a coupling (9).

10. The flame retardant production distillation kettle according to claim 9, characterized in that: An upper support seat (21) for supporting the main shaft is fixedly connected to the bracket (7), and a lower support seat (22) for supporting the rotating tube (3) is fixedly connected to the bracket (7).

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