Distillation kettle for producing fluorane color developing material

Abstract

The utility model relates to a distillation kettle for producing fluorane color developing materials in the technical field of color developing material production equipment, which comprises a kettle body, and a heating jacket is arranged outside the kettle body; a stirring and heating assembly is arranged in the kettle body; the stirring and heating assembly comprises a vertical rotating pipe, the upper end of the vertical rotating pipe penetrates through the top of the kettle body and then is connected with a medium inlet pipe through a first rotating joint, the vertical rotating pipe located outside the top of the kettle body is connected with a stepping motor, and the lower end of the vertical rotating pipe penetrates through the bottom of the kettle body and then is connected with a medium outlet pipe through a second rotating joint; an upper stirring blade and a lower stirring blade are arranged on the vertical rotating pipe positioned in the kettle body, the upper stirring blade and the lower stirring blade are annular pipes, the upper stirring blade is fixedly connected and communicated with the vertical rotating pipe through a plurality of upper connecting pipes, and the lower stirring blade is fixedly connected and communicated with the vertical rotating pipe through a plurality of lower connecting pipes. The reaction kettle can heat materials in the kettle body internally and externally at the same time, and is high in heating efficiency, high in heating uniformity and convenient to maintain and repair.

Description

Technical Field

[0001] The utility model belongs to the technical field of chromogenic material production equipment, and particularly relates to a distillation kettle for producing fluorane chromogenic materials. Background Art

[0002] In the production process of fluorane chromogenic materials, it is necessary to filter the materials, then dissolve the filtered substances into toluene solution, inject an inorganic base aqueous solution into the toluene solution, and stir, heat and reflux the mixed solution to obtain a reflux mixed solution. The processes of stirring and heating are generally carried out in a distillation kettle. A patent document with the application number 201821480236.X discloses a distillation device kettle for preparing dimethyl carbonate, including a distillation body, the upper surface of the distillation body is fixedly connected with a distillation cover, the inner wall of the distillation body is fixedly connected with a filter screen, the upper surface of the filter screen is movably connected with a round rod, the side surface of the round rod is fixedly connected with a stirring rod, the inner wall of the distillation body is provided with a feed hole, the inner top wall of the distillation cover is provided with a discharge hole, the inner top wall of the distillation cover is provided with a round hole, and the top end of the round rod penetrates through the round hole and is fixedly connected with the output shaft of a motor. By setting the round rod, the stirring rod and the motor, the fixed frame, the cross bar, the fixed frame and the distillation body, the feed hole and the discharge hole, the effect of quickly distilling dimethyl carbonate in the distillation body is achieved. This patent heats the materials by an electric heating rod arranged at the bottom, and the electric heating rod is fixed, resulting in problems such as a fixed heating range, uneven heating in the reaction kettle, and low heating efficiency, which is not suitable for the production of fluorane chromogenic materials. Therefore, a distillation kettle for producing fluorane chromogenic materials is needed to solve the above technical problems. Content of the Utility Model

[0003] In view of the above defects existing in the prior art, the utility model provides a distillation kettle for producing fluorane chromogenic materials, including a kettle body, the kettle body is provided with a feed port and a discharge port, an exhaust pipe is arranged at the top of the kettle body, and a heating jacket is arranged outside the kettle body; a stirring and heating assembly is arranged inside the kettle body.

[0004] The stirring and heating assembly includes a vertical rotating pipe. The upper end of the vertical rotating pipe penetrates through the top of the kettle body and is connected to a medium inlet pipe through a first rotary joint. A first bevel gear is fixedly connected to the vertical rotating pipe outside the top of the kettle body. The first bevel gear meshes with a second bevel gear, and the second bevel gear is connected to a stepper motor. The stepper motor is fixed on the kettle body. The lower end of the vertical rotating pipe penetrates through the bottom of the kettle body and is connected to a medium outlet pipe through a second rotary joint. The vertical rotating pipe and the kettle body are rotationally connected through a bearing. An upper stirring blade and a lower stirring blade are provided on the vertical rotating pipe inside the kettle body. Both the upper stirring blade and the lower stirring blade are annular pipes. The upper stirring blade is fixedly connected and communicated with the vertical rotating pipe through a plurality of upper connecting pipes. The lower stirring blade is fixedly connected and communicated with the vertical rotating pipe through a plurality of lower connecting pipes. The heat-conducting medium circulates in the vertical rotating pipe, the upper stirring blade, and the lower stirring blade to stir and heat the materials in the kettle body, and together with the external heating jacket, it realizes simultaneous internal and external heating, improving the heating efficiency and effect.

[0005] Preferably, a plurality of first vertical pipes are evenly and fixedly arranged between the upper stirring blade and the lower stirring blade. Both ends of the first vertical pipe are respectively communicated with the upper stirring blade and the lower stirring blade. This can further improve the stirring and heating range.

[0006] Preferably, a second vertical pipe is fixed between the corresponding upper connecting pipe and the lower connecting pipe. Both ends of the second vertical pipe are respectively communicated with the upper connecting pipe and the lower connecting pipe. This can further improve the stirring and heating range.

[0007] Preferably, the heating jacket includes two heating plates with a semi-circular cross-section. A heating cavity is provided inside the two heating plates. A medium inlet and a medium outlet communicated with the heating cavity are provided on the heating plates. A base is fixed at the bottom of the kettle body. Horizontal frames are respectively connected to the bases corresponding to the two heating plates. Chutes are provided on both horizontal frames. Screws are provided in both chutes. Both ends of the screw are respectively rotationally connected to both ends of the corresponding chute through bearings. One end of both screws penetrates through the chute and is respectively connected to a forward and reverse motor. Sliders are provided in both chutes. The two sliders are respectively in threaded cooperation with the corresponding screws. The lower ends of the two sliders match the chutes. The upper ends of the two sliders extend out of the chute and are fixedly connected to the corresponding heating plates. Through the forward and reverse rotation of the forward and reverse motor, the slider can drive the connected heating plate to move away from or close to the kettle body. When the heating plate moves away from the kettle body, it is convenient for the maintenance of the heating plate and the kettle body.

[0008] Preferably, a high thermal conductivity elastic layer is provided on the surface of the heating plate in contact with the kettle body. The high thermal conductivity elastic layer can be a silica gel layer. This setting can not only ensure the reliable contact between the heating jacket and the ladder, but also avoid damage to the kettle body when the heating jacket is closely attached to the kettle body.

[0009] The present utility model further includes other components that enable a distillation kettle for the production of fluoran color-developing materials to be used normally, such as the control components of the stepping motor, the control components of the forward and reverse motor, the control components (air pump or liquid pump) for controlling the medium circulation in the vertical rotating pipe, the control components (air pump or liquid pump) for controlling the medium circulation in the heating jacket, etc., which are all conventional technical means in the art. In addition, devices or components not defined in the present utility model, such as rotary joints, etc., all adopt conventional technical means and conventional equipment in the art.

[0010] The beneficial effects of the present utility model are as follows: reasonable structure, capable of simultaneously heating the materials in the kettle body both inside and outside, with high heating efficiency and high heating uniformity; the heating jacket can be separated from the kettle body, facilitating maintenance and repair. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The present utility model will be further described below in conjunction with the drawings and embodiments.

[0012] Figure 1 is a schematic structural diagram of a distillation kettle for the production of fluoran color-developing materials in an embodiment of the present utility model;

[0013] Figure 2 is Figure 1 the state diagram of the separated heating jacket in

[0014] Figure 3 is Figure 2 the state diagram inside the kettle body in

[0015] Figure 4 is Figure 3 the end view at A-A in

[0016] In the figure: 1. Kettle body; 2. Heating plate; 3. Feed inlet; 4. Stepping motor; 5. Second bevel gear; 6. First bevel gear; 7. Medium inlet pipe; 8. Exhaust pipe; 9. Medium inlet; 10. Medium outlet; 11. Base; 12. Discharge outlet; 13. Medium outlet pipe; 14. Horizontal frame; 15. Screw; 16. Forward and reverse motor; 17. Vertical rotating pipe; 18. Upper stirring blade; 19. First vertical pipe; 20. Second vertical pipe; 21. High thermal conductivity elastic layer; 22. Lower stirring blade; 23. Lower connecting pipe. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] The present utility model will be clearly described below in conjunction with the drawings in the embodiments of the present utility model and specific embodiments. The description here is only used to explain the present utility model, but not to limit the present utility model. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative efforts, any modifications, equivalent replacements, improvements, etc., shall be included within the protection scope of the present utility model.

[0018] Embodiment

[0019] As Figures 1-4 shown, the present utility model provides a distillation kettle for the production of fluorane color-developing materials, including a kettle body 1, on which a feed inlet 3 and a discharge outlet 12 are provided, an exhaust pipe 8 is provided at the top of the kettle body 1, and a heating jacket is provided outside the kettle body 1; a stirring and heating assembly is provided inside the kettle body 1;

[0020] The stirring and heating assembly includes a vertical rotating pipe 17, the upper end of the vertical rotating pipe 17 penetrates through the top of the kettle body 1 and is connected to a medium inlet pipe 7 through a first rotary joint. A first bevel gear 6 is fixedly connected to the vertical rotating pipe 17 outside the top of the kettle body 1. The first bevel gear 6 meshes with a second bevel gear 5, and the second bevel gear 5 is connected to a stepping motor 4, which is fixed on the kettle body 1. The lower end of the vertical rotating pipe 17 penetrates through the bottom of the kettle body 1 and is connected to a medium outlet pipe 13 through a second rotary joint. The vertical rotating pipe is rotatably connected to the kettle body through a bearing; upper stirring blades 18 and lower stirring blades 22 are provided on the vertical rotating pipe 17 inside the kettle body 1. Both the upper stirring blades 18 and the lower stirring blades 22 are annular pipes. The upper stirring blades 18 are fixedly connected and communicated with the vertical rotating pipe 17 through a plurality of upper connecting pipes, and the lower stirring blades 22 are fixedly connected and communicated with the vertical rotating pipe 17 through a plurality of lower connecting pipes 23. The heat-conducting medium circulates in the vertical rotating pipe 17, the upper stirring blades 18, and the lower stirring blades 22 to stir and heat the materials in the kettle body 1. Cooperating with the external heating jacket realizes simultaneous internal and external heating, improving the heating efficiency and effect.

[0021] A plurality of first vertical pipes 19 are evenly fixed between the upper stirring blades 18 and the lower stirring blades 22. Both ends of the first vertical pipes 19 are respectively communicated with the upper stirring blades 18 and the lower stirring blades 22. The stirring and heating range can be further improved.

[0022] A second vertical pipe 20 is fixed between the corresponding upper connecting pipe and the lower connecting pipe 23. Both ends of the second vertical pipe 20 are respectively communicated with the upper connecting pipe and the lower connecting pipe 23. The stirring and heating range can be further improved.

[0023] The heating jacket includes two heating plates 2 with a semi-circular cross-section. A heating chamber is provided inside the two heating plates 2. A medium inlet 9 and a medium outlet 10 communicating with the heating chamber are provided on the heating plates. A base 11 is fixed to the bottom of the kettle body 1. Horizontal frames 14 are connected to the corresponding bases 11 of the two heating plates 2. Chutes are provided on both of the two horizontal frames 14. Screws 15 are provided in both of the two chutes. The two ends of the screw are respectively rotatably connected to the two ends of the corresponding chute through bearings. One end of each of the two screws 15 penetrates through the chute and is respectively connected to a forward and reverse motor 16. Sliders are provided in both of the two chutes. The two sliders are respectively in threaded cooperation with the corresponding screws 15. The lower ends of the two sliders match the chutes. The upper ends of the two sliders extend out of the chutes and are fixedly connected to the corresponding heating plates 2. By the forward and reverse rotation of the forward and reverse motor 16, the slider can drive the connected heating plate 2 to move away from or close to the kettle body 1. When the heating plate 2 moves away from the kettle body 1, it is convenient to repair and maintain the heating plate 2 and the kettle body 1.

[0024] A highly thermally conductive elastic layer 21 is provided on the surface of the heating plate 2 in contact with the kettle body 1. The highly thermally conductive elastic layer 21 can be a silicone layer. This setting can not only ensure the reliable contact between the heating jacket and the escalator, but also prevent damage to the kettle body 1 when the heating jacket is closely attached to the kettle body 1.

[0025] Working principle: The discharge port is closed. The material to be distilled is fed into the kettle body through the feed port. The feed port is closed. A heating medium (such as heat-conducting oil) is continuously circulated into the stirring and heating assembly of the heating jacket. The stepping motor drives the vertical rotating pipe to rotate. The heat-conducting medium circulates in the vertical rotating pipe, the upper stirring blade and the lower stirring blade to stir and heat the material in the kettle body. The internal and external heating is realized in cooperation with the external heating jacket, improving the heating efficiency and effect. The distilled material is discharged from the exhaust pipe for subsequent condensation operation. After the distillation is completed, by the rotation of the forward and reverse motor, the slider can drive the connected heating plate to move away from the kettle body, which is convenient for repairing and maintaining the heating plate and the kettle body.

[0026] The embodiments of the present invention have been described above. The above description is exemplary and not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes are obvious to those of ordinary skill in the art in the technical field without departing from the scope and spirit of the described embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A distillation kettle for producing fluorane color-developing materials, comprising a kettle body, a feed inlet and a discharge inlet are arranged on the kettle body, an exhaust pipe is arranged on the top of the kettle body, and a heating jacket is arranged outside the kettle body; characterized in that: The kettle body is provided with a stirring and heating component; The stirring and heating assembly includes a vertical rotating tube, the upper end of which passes through the top of the kettle body and is connected to a medium inlet pipe through a rotating joint 1, a bevel gear 1 is fixedly connected to the vertical rotating tube outside the top of the kettle body, the bevel gear 1 is meshed with a bevel gear 2, the bevel gear 2 is connected to a stepper motor, and the stepper motor is fixed to the kettle body, and the lower end of the vertical rotating tube passes through the bottom of the kettle body and is connected to a medium outlet pipe through a rotating joint 2; an upper stirring blade and a lower stirring blade are provided on the vertical rotating tube located in the kettle body, both of which are annular tubes, the upper stirring blade is fixedly connected and communicated with the vertical rotating tube through a plurality of upper connecting tubes, and the lower stirring blade is fixedly connected and communicated with the vertical rotating tube through a plurality of lower connecting tubes.

2. A distillation kettle for producing fluorane color-developing materials according to claim 1, characterized in that: A plurality of vertical tubes 1 are evenly fixed between the upper stirring blade and the lower stirring blade, and two ends of the vertical tube 1 are respectively connected with the upper stirring blade and the lower stirring blade.

3. A distillation kettle for producing fluorane color-developing materials according to claim 1, characterized in that: A second vertical pipe is fixed between the upper connecting pipe and the corresponding lower connecting pipe, and two ends of the second vertical pipe are respectively connected with the upper connecting pipe and the lower connecting pipe.

4. A distillation kettle for producing fluorane color-developing materials according to claim 1, characterized in that: The heating sleeve includes two heating plates with semicircular cross-sections, heating cavities are provided in the two heating plates, and medium inlets and medium outlets connected to the heating cavities are provided on the heating plates. A base is fixed to the bottom of the kettle body, and horizontal frames are connected to the bases corresponding to the two heating plates, and slide grooves are provided on the two horizontal frames. Screws are provided in the two slide grooves, and one end of the two screws passes through the slide groove and is respectively connected to forward and reverse motors. Slide blocks are provided in the two slide grooves, and the two slide blocks are respectively matched with corresponding screw threads. The lower ends of the two slide blocks match the slide grooves, and the upper ends of the two slide blocks extend out of the slide groove and are fixedly connected to the corresponding heating plates.

5. A distillation kettle for producing fluorane color-developing materials according to claim 4, characterized in that: A high thermal conductivity elastic layer is provided on the surface of the heating plate that contacts the kettle body.

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