Drying device for p-phenylenediamine production

Abstract

The utility model discloses a drying device for p-phenylenediamine production, which belongs to the field of chemical industry and comprises a drying box, a heating component is arranged on the rear side of the drying box, a connecting column is arranged in the drying box through a positioning plate, a screen capable of sliding along the axial direction of the connecting column is arranged on the connecting column, and a spring is sleeved on the connecting column. A vibration assembly is arranged at the position, below the screen, of the drying box, a material dispersing assembly is arranged at the position, above the screen, of the drying box, and the vibration assembly enables the screen to vibrate up and down on the connecting columns and drives the material dispersing assembly to disperse materials bounced through vibration. According to the drying device for p-phenylenediamine production, the vibrating assembly enables the screen to vibrate up and down, p-phenylenediamine is bounced and loosened through the vibrating screen, materials can be more dispersed in cooperation with the material dispersing assembly, and therefore the contact area between the materials and heat is increased, and the drying efficiency of p-phenylenediamine is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of chemical industry, in particular to a drying device for producing p-phenylenediamine. Background Art

[0002] p-phenylenediamine is a widely used intermediate that can be used to make azo dyes, high molecular polymers, fur dyes, rubber antioxidants and photo developers. In addition, p-phenylenediamine is also a commonly used sensitive reagent for testing iron and copper. In the production process of p-phenylenediamine, the drying device is used to eliminate the water mixed in p-phenylenediamine, thereby preventing the presence of water from adversely affecting the quality and stability of the product.

[0003] When paraphenylenediamine is dried using a drying device, it is concentrated in a drying box for drying. The p-phenylenediamine piled up together will reduce the surface area for heat transfer and water evaporation, thereby reducing the drying efficiency. When the p-phenylenediamine is stirred and turned over by a stirring structure, the contact area between the stirring blade and the p-phenylenediamine is small, and the p-phenylenediamine cannot be effectively and thoroughly turned over, which will also cause the problem of low drying efficiency. Utility Model Content

[0004] The utility model aims to solve the problem of low drying efficiency of the existing p-phenylenediamine and proposes a drying device for the production of p-phenylenediamine.

[0005] In order to achieve the above purpose, the utility model adopts the following technologies:

[0006] A drying device for producing p-phenylenediamine, comprising a drying box, a feeding port connected thereto is arranged on the top of the drying box, a baffle is arranged on the front side of the drying box through the discharging port, a heating assembly is arranged on the rear side of the drying box, a connecting column is arranged inside the drying box through a positioning plate, a screen that can slide along the axial direction of the connecting column is arranged on the connecting column, a spring is sleeved on the connecting column, a vibration assembly is arranged on the drying box below the screen, and a bulk material assembly is arranged on the drying box above the screen;

[0007] The vibration component makes the screen vibrate up and down on the connecting column and drives the bulk material component to disperse the materials bounced by the vibration.

[0008] As a further description of the above technical solution: the vibration assembly includes a motor group arranged outside the drying box through a mounting frame, and a first shaft rod penetrating the drying box is fixedly connected to the output end of the motor group, and a cam located below the screen is arranged on the first shaft rod.

[0009] As a further description of the above technical solution: the bulk material assembly includes a second shaft rod penetrating the drying box, a bulk material rod is arranged on the second shaft rod above the screen, and there is a space between the bottom of the bulk material rod and the screen for the screen to vibrate.

[0010] As a further description of the above technical solution: a second transmission wheel is arranged on the second shaft at a position outside the drying box, a first transmission wheel is arranged on the first shaft at a position outside the drying box, and a transmission belt is arranged between the second transmission wheel and the first transmission wheel.

[0011] As a further description of the above technical solution: the number of springs sleeved on the connecting column is two, and the two springs are respectively in contact with the upper and lower side surfaces of the screen.

[0012] As a further description of the above technical solution: a nut is provided on the top of the connecting column through a threaded end.

[0013] As a further description of the above technical solution: the heating component includes a mounting base fixed to the rear side of the drying box by a mounting plate and connected to the interior of the drying box, a heat conducting plate is arranged on the mounting base, an electric heating tube is arranged inside the mounting base, and a wiring socket is arranged at one end of the mounting base.

[0014] As a further description of the above technical solution: the heat conducting plate is made of a copper plate or an aluminum plate, and the electric heating tube is distributed in a serpentine shape inside the mounting base.

[0015] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0016] 1. When drying p-phenylenediamine, p-phenylenediamine is fed onto the screen, and the screen is continuously vibrated on the connecting column by the vibration component, so that the p-phenylenediamine on the screen bounces up. When the p-phenylenediamine bounces up, it will be in a loose state. With the help of the bulk material component, the bounced p-phenylenediamine will be dispersed to a large extent in the air, thereby increasing the surface area for heat transfer and water evaporation, thereby greatly improving the drying efficiency of p-phenylenediamine;

[0017] 2. Place the p-phenylenediamine on the screen for drying. The screen can screen out the broken materials in the p-phenylenediamine to avoid the broken materials causing a decrease in the drying efficiency of the p-phenylenediamine. In addition, as the vibration component continuously vibrates the screen, the screen can be prevented from being blocked, and the p-phenylenediamine can be screened during the drying process. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The structure schematic diagram provided according to the embodiment of the utility model is shown Figure 1 ;

[0019] Figure 2 The structure schematic diagram provided according to the embodiment of the utility model is shown Figure 2 ;

[0020] Figure 3 A partial cutaway schematic diagram according to an embodiment of the utility model is shown;

[0021] Figure 4 A partial structural schematic diagram according to an embodiment of the utility model is shown;

[0022] Figure 5 A schematic diagram of the structure of a vibration assembly provided according to an embodiment of the utility model is shown;

[0023] Figure 6 A schematic structural diagram of a bulk material assembly provided according to an embodiment of the utility model is shown;

[0024] Figure 7 A schematic diagram of the structure of a heating assembly provided according to an embodiment of the utility model is shown;

[0025] Figure 8 A schematic structural diagram of a connecting column provided according to an embodiment of the utility model is shown.

[0026] Legend:

[0027] 1. Drying box; 2. Feed inlet; 3. Discharge outlet; 4. Baffle; 5. Heating component; 51. Mounting seat; 52. Mounting plate; 53. Heat conducting plate; 54. Electric heating tube; 55. Terminal block; 6. Positioning plate; 7. Connecting column; 71. Threaded end; 72. Nut; 8. Screen; 9. Spring; 10. Vibration component; 101. Mounting frame; 102. Motor group; 103. First shaft rod; 104. Cam; 105. First transmission wheel; 11. Bulk material component; 111. Second shaft rod; 112. Bulk material rod; 113. Second transmission wheel; 114. Transmission belt. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] Reference Figure 1-Figure 8The present embodiment provides a drying device for producing p-phenylenediamine, comprising a drying box 1, a feeding port 2 communicating with the drying box 1 is arranged on the top of the drying box 1, a baffle 4 is arranged on the front side of the drying box 1 through a discharging port 3, a heating assembly 5 is arranged on the rear side of the drying box 1, a connecting column 7 is arranged inside the drying box 1 through a positioning plate 6, a screen 8 that can slide along the axial direction of the connecting column 7 is arranged on the connecting column 7, a spring 9 is sleeved on the connecting column 7, a vibration assembly 10 is arranged below the screen 8 on the drying box 1, and a bulk material assembly 11 is arranged above the screen 8 on the drying box 1, the vibration assembly 10 makes the screen 8 vibrate up and down on the connecting column 7 and drives the bulk material assembly 11 to disperse the material bounced by the vibration.

[0030] In the utility model, the p-phenylenediamine to be dried is fed into the drying box 1 through the feed port 2 at the top of the drying box 1 and falls on the screen 8. The heating component 5 is started to heat the inside of the drying box 1. At this time, the vibration component 10 is started to make the screen 8 vibrate up and down on the connecting column 7 in cooperation with the spring 9. When the screen 8 vibrates, the p-phenylenediamine on the screen 8 will vibrate and bounce up, thereby loosening the p-phenylenediamine. Then, the bulking component 11, driven by the vibration component 10, scatters the bounced p-phenylenediamine to make it more loose, thereby enabling the heat of the heating component 5 to act more effectively on the p-phenylenediamine, increasing the surface area for heat transfer and water evaporation, thereby greatly improving the drying efficiency of the p-phenylenediamine. After drying, the baffle 4 on the discharge port 3 is opened to take out the dried p-phenylenediamine material.

[0031] Specifically, Figure 1-Figure 5 As shown, the vibration assembly 10 includes a motor group 102 arranged outside the drying box 1 through a mounting frame 101, and a first shaft 103 penetrating the drying box 1 is fixedly connected to the output end of the motor group 102, and a cam 104 located below the screen 8 is arranged on the first shaft 103. The motor group 102 on the mounting frame 101 drives the cam 104 on the first shaft 103 to rotate, and during the rotation of the cam 104, as the raised part of the cam 104 approaches the screen 8, the screen 8 will be gradually lifted up, and then when the raised part of the cam 104 turns downward, the screen 8 continuously vibrates under the action of the spring 9, so that the p-phenylenediamine on the screen 8 can bounce up under the action of the vibration, so that the p-phenylenediamine is in a loose state, thereby accelerating the drying efficiency.

[0032] Specifically, Figure 3-Figure 6As shown, the bulk material assembly 11 includes a second shaft 111 passing through the drying box 1, a bulk material rod 112 is arranged on the second shaft 111 at a position above the screen 8, a space for the screen 8 to vibrate is provided between the bottom of the bulk material rod 112 and the screen 8, a second transmission wheel 113 is arranged on the second shaft 111 at a position outside the drying box 1, a first transmission wheel 105 is arranged on the first shaft 103 at a position outside the drying box 1, and a transmission belt 114 is arranged between the second transmission wheel 113 and the first transmission wheel 105.

[0033] Among them, when the motor group 102 drives the first shaft 103 to rotate, the first transmission wheel 105 on the first shaft 103 drives the second transmission wheel 113 to rotate through the transmission belt 114, and then drives the second shaft 111 to rotate. When the p-phenylenediamine on the screen 8 vibrates and bounces up, the bulk rod 112 on the second shaft 111 acts as a stirring blade, dispersing the bounced p-phenylenediamine to make it in a looser state, thereby improving the drying efficiency. There is enough space between the lower end of the bulk rod 112 and the screen 8 to ensure that the screen 8 will not touch the rotating bulk rod 112 when vibrating.

[0034] It should be noted that there are two springs 9 sleeved on the connecting column 7, and the two springs 9 are respectively in contact with the upper and lower sides of the screen 8. The springs 9 on the upper and lower sides of the screen 8 can increase the vibration amplitude of the screen 8 during vibration, so that the p-phenylenediamine on the screen 8 can vibrate to a certain height, ensuring that the p-phenylenediamine on the screen 8 can be in a state of vibration dispersion.

[0035] Specifically, Figure 4 and Figure 8 As shown, a nut 72 is provided at the top of the connecting column 7 through a threaded end 71. Connecting the nut 72 through the threaded end 71 can facilitate the installation and removal of the nut 72, and then the screen 8 on the connecting column 7 can be easily removed, and the screen 8 can be easily disassembled when the screen 8 needs to be repaired and replaced.

[0036] Specifically, Figure 2 and Figure 7 As shown, the heating assembly 5 includes a mounting seat 51 fixed to the rear side of the drying box 1 by a mounting plate 52 and connected to the inside of the drying box 1, a heat conducting plate 53 is arranged on the mounting seat 51, an electric heating pipe 54 is arranged inside the mounting seat 51, and a wiring seat 55 is arranged at one end of the mounting seat 51. The wiring seat 55 is connected to an external power line so that the electric heating pipe 54 is powered on and works, and the electric heating pipe 54 heats and transfers the heat to the drying box 1 through the heat conducting plate 53, thereby drying the p-phenylenediamine in the drying box 1.

[0037] It should be noted that the heat conducting plate 53 is made of a copper plate or an aluminum plate, and the electric heating tube 54 is distributed in a serpentine shape inside the mounting base 51. The copper plate or the aluminum plate has excellent thermal conductivity, so that the heat of the electric heating tube 54 can be efficiently transferred to the drying box 1. The serpentine distribution of the electric heating tube 54 can increase the heat conduction range, thereby improving the drying speed of the drying box 1.

[0038] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A drying device for producing p-phenylenediamine, characterized in that: The invention comprises a drying box (1), wherein a feed port (2) communicating with the drying box (1) is arranged at the top of the drying box (1), a baffle (4) is arranged at the front side of the drying box (1) through a discharge port (3), a heating assembly (5) is arranged at the rear side of the drying box (1), a connecting column (7) is arranged inside the drying box (1) through a positioning plate (6), a screen (8) which can slide along the axial direction of the connecting column (7) is arranged on the connecting column (7), a spring (9) is sleeved on the connecting column (7), a vibration assembly (10) is arranged at a position below the screen (8) on the drying box (1), and a bulk material assembly (11) is arranged at a position above the screen (8) on the drying box (1); The vibration component (10) causes the screen (8) to vibrate up and down on the connecting column (7) and drives the bulk material component (11) to disperse the material that is bounced up by the vibration.

2. A drying device for producing p-phenylenediamine according to claim 1, characterized in that: The vibration assembly (10) comprises a motor group (102) arranged outside the drying box (1) via a mounting frame (101); a first shaft (103) penetrating the drying box (1) is fixedly connected to the output end of the motor group (102); and a cam (104) located below the screen (8) is arranged on the first shaft (103).

3. A drying device for producing p-phenylenediamine according to claim 2, characterized in that: The bulk material assembly (11) comprises a second shaft (111) penetrating the drying box (1); a bulk material rod (112) is arranged on the second shaft (111) at a position above the screen (8); and a space for the screen (8) to vibrate is provided between the bottom of the bulk material rod (112) and the screen (8).

4. A drying device for producing p-phenylenediamine according to claim 3, characterized in that: A second transmission wheel (113) is arranged on the second shaft (111) at a position outside the drying box (1), a first transmission wheel (105) is arranged on the first shaft (103) at a position outside the drying box (1), and a transmission belt (114) is arranged between the second transmission wheel (113) and the first transmission wheel (105).

5. A drying device for producing p-phenylenediamine according to claim 1, characterized in that: The number of springs (9) sleeved on the connecting column (7) is two, and the two springs (9) are respectively in contact with the upper and lower side surfaces of the screen (8).

6. A drying device for producing p-phenylenediamine according to claim 1, characterized in that: The top of the connecting column (7) is provided with a nut (72) via a threaded end (71).

7. A drying device for producing p-phenylenediamine according to claim 1, characterized in that: The heating assembly (5) comprises a mounting seat (51) fixed to the rear side of the drying box (1) by means of a mounting plate (52) and connected to the interior of the drying box (1); a heat conducting plate (53) is arranged on the mounting seat (51); an electric heating pipe (54) is arranged inside the mounting seat (51); and a wiring seat (55) is arranged at one end of the mounting seat (51).

8. A drying device for producing p-phenylenediamine according to claim 7, characterized in that: The heat conducting plate (53) is made of a copper plate or an aluminum plate, and the electric heating tube (54) is distributed in a serpentine shape inside the mounting seat (51).

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