Mixing device for producing p-phenylenediamine

Abstract

The utility model discloses a mixing device for producing p-phenylenediamine, which comprises a reaction kettle main body, a top cover arranged at the top of the reaction kettle main body, an access hole formed in the center of the top cover, a top cover which covers the access hole and is detachably connected with the access hole, a motor which is arranged on the top wall of the top cover in a penetrating manner, and a rotating shaft which is fixedly connected to the bottom end of the motor and extends to the bottom of the reaction kettle main body, the stirring frame is connected with the rotating shaft and can be folded, the lifting sleeve is arranged on the rotating shaft in a sleeving mode and drives the stirring frame to be folded through self-lifting, and the telescopic cylinder penetrates through the top wall of the top cover and drives the lifting sleeve to ascend and descend. According to the mixing device for producing the p-phenylenediamine, the stirring frame is used for stirring and mixing raw materials for producing the p-phenylenediamine; the stirring frame can be folded and unfolded, so that the stirring frame can be taken out from the reaction kettle main body under the condition that the top cover is not disassembled, and the stirring frame is convenient to clean and maintain.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of mixing device for p-phenylenediamine production. BACKGROUND

[0002] P-Phenylenediamine, also known as Urcein D, is an organic compound with the chemical formula C6H8N2. It is one of the simplest aromatic diamines and a widely used intermediate. It can be used to produce azo dyes, high-molecular polymers, and is also used in the production of fur dyeing agents, rubber antioxidants, and photographic developers. Additionally, p-phenylenediamine is a sensitive reagent commonly used for testing iron and copper.

[0003] In the production process of p-phenylenediamine, multiple raw materials need to be fed into the reaction kettle and mixed by the stirring mechanism in the reaction kettle. The raw materials are usually transported and supplied through a feeding pipe, which is fixedly connected to the feeding port on the top cover of the reaction kettle. After a certain period of use, the stirring mechanism in the reaction kettle needs to be cleaned and maintained. This requires the removal of the top cover of the reaction kettle to take out the stirring mechanism for cleaning and maintenance. However, since the top cover of the reaction kettle is fixedly connected to the feeding pipe, it cannot be easily removed, which makes it difficult to smoothly remove the stirring mechanism from the reaction kettle for cleaning and maintenance. SUMMARY

[0004] To solve the defects of the prior art, the utility model provides a kind of mixing device for p-phenylenediamine production, including: reaction kettle main body, top cover being located at the top of reaction kettle main body, access hole being located at the center of top cover, top cover being covered access hole and being detachably connected with access hole, vertical motor being penetrated in the top wall of top cover, vertical rotating shaft being fixedly connected to the bottom end of motor, being coaxial with reaction kettle main body and extending to the bottom of the inner cavity of reaction kettle main body, stirring frame being located in the inner cavity of reaction kettle main body and being connected with rotating shaft and capable of being folded to rotating shaft, lifting sleeve being sleeved on rotating shaft, being connected with stirring frame and driving stirring frame to fold to rotating shaft by itself lifting, and vertical telescopic cylinder being penetrated in the top wall of top cover and driving lifting sleeve to lift.

[0005] Preferably, the top end of the lifting sleeve is sleeved with a bearing, and the outer ring of the bearing is fixedly connected with a connecting block, and the telescopic end of the telescopic cylinder is fixedly connected with the connecting block.

[0006] Preferably, the bottom end of the lifting sleeve is sleeved with a protruding ring.

[0007] Preferably, the stirring frame includes: a vertical rod located on one side of the rotating shaft, a plurality of connecting rods arranged in order from top to bottom, parallel to each other, and hinged at both ends to the vertical rod and the rotating shaft, and a push-pull rod hinged at both ends to the uppermost connecting rod and the outer ring of the protruding ring.

[0008] Preferably, the push-pull rod is hinged to the middle part of the uppermost connecting rod.

[0009] Preferably, the stirring frame is a pair.

[0010] Preferably, the pair of stirring frames is arranged in rotational axis symmetry.

[0011] Preferably, the top cover is further provided with a feeding port at the periphery of the manhole.

[0012] Preferably, the feeding port is fixedly connected with a feeding pipeline.

[0013] Preferably, the bottom of the reaction kettle body is further provided with a discharging port.

[0014] The advantages and beneficial effects of the utility model lie in: a mixing device for p-phenylenediamine production is provided, which uses a stirring frame to stir and mix raw materials for producing p-phenylenediamine; and the stirring frame can be folded and unfolded, and can be taken out of the reaction kettle body without disassembling the top cover, thus facilitating cleaning and maintenance of the stirring frame.

[0015] The utility model also has the following characteristics:

[0016] The utility model can drive the stirring frame to be folded towards the rotational axis (the vertical rods gradually approach the rotational axis) through upward movement of the lifting sleeve, so that the stirring frame (the vertical rods) can be folded to be completely located directly below the manhole; in this way, the stirring frame can be taken out of the manhole, and the stirring frame can be taken out of the reaction kettle body without disassembling the top cover, thus facilitating cleaning and maintenance of the stirring frame.

[0017] The utility model can drive the stirring frame to be unfolded (the vertical rods gradually move away from the rotational axis) through downward movement of the lifting sleeve, so that the stirring frame can be unfolded to the maximum extent (for example, the connecting rods are placed horizontally), and the stirring frame can effectively stir and mix materials.

[0018] When the rotational axis drives the stirring frame to rotate, the lifting sleeve will rotate synchronously with the stirring frame and the rotational axis; the telescopic cylinder is connected with the lifting sleeve through the connecting block and the bearing, and the bearing can support the rotation of the lifting sleeve and drive the lifting sleeve to move up and down. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is a schematic view of the utility model. DETAILED DESCRIPTION

[0020] The specific implementation of the utility model is described below in combination with the drawings and examples. The following examples are only used to more clearly illustrate the technical solutions of the utility model, and cannot be used to limit the protection scope of the utility model.

[0021] The specific implementation of the utility model is described below in combination with the drawings and examples. The following examples are only used to more clearly illustrate the technical solutions of the utility model, and cannot be used to limit the protection scope of the utility model.

[0022] For example, Figure 1As shown, a kind of mixing device for p-phenylenediamine production, including: reactor main body 1, top cover 2 located at the top of reactor main body 1, access hole 21 located at the center of top cover 2, feed inlet 22 located on top cover 2, located at the periphery of access hole 21 and is fixed with feed pipe 23, discharge port 12 located at the bottom of reactor main body 1, top cover 3 covering access hole 21 and being detachably connected with access hole 21, vertically motor 41 passing through the top wall of top cover 3, vertically rotating shaft 42 being fixed to the bottom end of motor 41, coaxial with reactor main body 1 and extending to the inner cavity of reactor main body 1, stirring frame 5 being arranged in the inner cavity of reactor main body 1 and being connected with rotating shaft 42 and capable of being folded to rotating shaft 42, lifting sleeve 6 being sleeved on rotating shaft 42, being connected with stirring frame 5 and driving stirring frame 5 to be folded to rotating shaft 42 by itself lifting, and vertically telescopic cylinder 71 passing through the top wall of top cover 3 and driving lifting sleeve 6 to lift;

[0023] the top end of lifting sleeve 6 is sleeved with bearing 61, the outer ring of bearing 61 is fixed with connecting block 72, and the telescopic end of telescopic cylinder 71 is fixed with connecting block 72;The bottom end of lifting sleeve 6 is sleeved with convex ring 62;

[0024] stirring frame 5 includes: vertical rod 51 located on one side of rotating shaft 42, multiple connecting rods 52 arranged in sequence from top to bottom, parallel to each other and hinged at both ends with vertical rod 51 and rotating shaft 42, and push-pull rod 53 hinged at both ends with the middle part of the uppermost connecting rod 52 and the outer ring of convex ring 62;(any two connecting rods 52 and vertical rod 51, rotating shaft 42 form a parallelogram mechanism)

[0025] stirring frame 5 is a pair, and the pair of stirring frame 5 is symmetrically arranged about rotating shaft 42.

[0026] The working principle of the mixing device for p-phenylenediamine production includes:

[0027] The raw materials for producing p-phenylenediamine are usually conveyed by feed pipe 23 and enter reactor main body 1 through feed inlet 22, and motor 41 drives rotating shaft 42 to rotate, and rotating shaft 42 drives stirring frame 5 to stir and mix the materials;

[0028] When stirring frame 5 needs to be cleaned and maintained after being used for a certain period of time, the reactor stops working, telescopic cylinder 71 drives bearing 61 to move up through connecting block 72, bearing 61 drives lifting sleeve 6 and convex ring 62 at the bottom end of lifting sleeve 6 to move up synchronously, and convex ring 62 moves up and drives stirring frame 5 to fold to rotating shaft 42 (vertical rod 51 gradually approaches rotating shaft 42) through push-pull rod 53, until stirring frame 5 (vertical rod 51) is folded to completely locate below access hole 21;Then top cover 3 is detached from access hole 21, and top cover 3 is moved up, and top cover 3 is moved up by motor 41 and rotating shaft 42 to drive stirring frame 5 to move up, until stirring frame 5 is completely removed from access hole 21, then stirring frame 5 can be cleaned and maintained.

[0029] After the cleaning and maintenance of the stirring frame 5 is completed, the stirring frame 5 is inserted into the reaction kettle main body 1 through the access hole 21, and the top cover 3 is reassembled with the access hole 21; then the telescopic cylinder 71 drives the bearing 61 to move downward through the connecting block 72, the bearing 61 drives the lifting sleeve 6 and the convex ring 62 at the bottom end of the lifting sleeve 6 to move downward synchronously, and the convex ring 62 drives the stirring frame 5 to expand (the vertical rod 51 gradually moves away from the rotating shaft 42) through the push-pull rod 53 during the movement downward of the convex ring 62, until the stirring frame 5 is expanded to the maximum extent (for example, the connecting rod 52 is placed horizontally, and at this time, the vertical rod 51 is outside the periphery of the access hole 21); subsequent feeding and production can be continued, and the expanded stirring frame 5 can effectively implement stirring and mixing of the materials;

[0030] When the rotating shaft 42 drives the stirring frame 5 to rotate, the lifting sleeve 6 rotates synchronously with the stirring frame 5 and the rotating shaft 42; the telescopic cylinder 71 is connected with the lifting sleeve 6 through the connecting block 72 and the bearing 61, and the bearing 61 can support the rotation of the lifting sleeve 6 and drive the lifting sleeve 6 to move up and down.

[0031] The preferred embodiments of the present application are described above, it should be noted that for ordinary skilled in the art, without departing from the technical principles of the present application, can make a number of improvements and refinements, these improvements and refinements should also be considered as the protection scope of the present application.

Claims

1. A mixing device for p-phenylenediamine production, characterized by, Include: The reaction kettle body is provided with a top cover on the top of the reaction kettle body, an inspection hole is provided in the center of the top cover, a top cover is covered on the inspection hole and is detachably connected with the inspection hole, a motor is penetrated in the top wall of the top cover, a rotating shaft is fixedly connected with the bottom end of the motor and extends to the bottom of the reaction kettle body, a stirring frame is connected with the rotating shaft and can be folded, a lifting sleeve is sleeved on the rotating shaft and drives the folding of the stirring frame, and a telescopic cylinder is penetrated in the top wall of the top cover and drives the lifting of the lifting sleeve.

2. The mixing device for producing p-phenylenediamine according to claim 1, characterized by The top end of the lifting sleeve is sleeved with a bearing, the outer ring of the bearing is fixedly connected with a connecting block, and the telescopic end of the telescopic cylinder is fixedly connected with the connecting block.

3. The mixing device for producing p-phenylenediamine according to claim 2, characterized by The bottom end of the lifting sleeve is sleeved with a convex ring.

4. The mixing device for producing p-phenylenediamine according to claim 3, characterized by The stirring frame comprises: a vertical rod arranged on one side of the rotating shaft, a plurality of connecting rods arranged in sequence from top to bottom, parallel to each other and hinged at both ends with the vertical rod and the rotating shaft, and a push-pull rod hinged at both ends with the uppermost connecting rod and the convex ring.

5. The mixing device for producing p-phenylenediamine according to claim 4, wherein The push-pull rod is hinged at the middle of the uppermost connecting rod.

6. The mixing device for producing p-phenylenediamine according to claim 4, wherein The stirring frame is a pair.

7. The mixing device for producing p-phenylenediamine according to claim 6, characterized by The pair of stirring frames are symmetrically arranged about the rotating shaft.

8. The mixing device for producing p-phenylenediamine according to claim 1, wherein The top cover is also provided with a feeding port around the inspection hole.

9. The mixing device for producing p-phenylenediamine according to claim 8, characterized by The feeding port is fixedly connected with a conveying pipeline.

10. The mixing device for producing p-phenylenediamine according to claim 1, wherein The bottom of the reaction kettle body is also provided with a discharge port.

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