Mixing device for producing 4, 4 '-diaminodiphenyl methane

Abstract

The utility model relates to the technical field of stirring and mixing, and in particular relates to a 4, 4 '-dihydroxyl-1, the mixing device for 4, 4 '-diaminodiphenyl methane production comprises a mixing tank and a supporting rod, the supporting rod is fixedly installed on the mixing tank, the mixing device further comprises a stirring device, the stirring device comprises a connecting shaft, a turning rod, a first turning plate, a second turning plate, a connecting assembly and a transmission assembly, and the connecting shaft is rotatably installed on the mixing tank through the transmission assembly; the turning rod is mounted on the connecting shaft through the connecting assembly, the first turning plate is fixedly mounted on the turning rod, the second turning plate is fixedly mounted on the connecting shaft, and the connecting shaft is driven to rotate through the transmission assembly, so that the connecting shaft drives the second turning plate to rotate along the axis; meanwhile, the rotation of a connecting shaft drives a plurality of groups of turning rods to rotate circumferentially through a connecting assembly and enables a first turning plate to rotate, so that under the circumferential rotation of the first turning plate and the circumferential rotation of a second turning plate, the synthetic raw materials at the upper part, the lower part and the middle part of the mixing tank are fully turned and mixed.

Description

Technical Field

[0001] This utility model relates to the field of stirring and mixing technology, and in particular to a mixing device for the production of 4,4'-diaminodiphenylmethane. Background Technology

[0002] The synthesis of 4,4'-diaminodiphenylmethane requires high-pressure catalysis. During the catalytic process, the reactants need to be thoroughly stirred. The more thoroughly the stirring is done in the reactor, the higher the yield of the final product. However, the stirring mode of the current mixing device is relatively simple, making it difficult to achieve thorough mixing.

[0003] Existing patent CN219168183U3 describes a bidirectional mixing and stirring reactor for synthesizing 4,4'-diaminodiphenylmethane. Through the arrangement of the stirring mechanism and rotating components, the connection of a gear ring, gears, connecting rods, and agitator plates allows the connecting rod to rotate along with the rotating column, while the gears, in conjunction with the gear ring, drive the connecting rod to rotate on its own axis. This bidirectional mixing of the materials avoids the unidirectional rotation of the paddle during stirring, reducing stirring time. Simultaneously, the cooperation of a fixing ring and scraper agitates the materials at the bottom of the reactor, ensuring thorough mixing.

[0004] However, in the process of using the above method, the device drives the disturbance plate to stir the synthetic raw materials through the circumferential rotation and self-rotation of the connecting rod. However, this results in the synthetic raw materials in the middle of the reaction tank not being effectively stirred, so that the reaction raw materials on the side and in the middle of the reaction tank cannot be fully mixed. Utility Model Content

[0005] The purpose of this invention is to provide a mixing device for the production of 4,4'-diaminodiphenylmethane, which solves the problem that the aforementioned device uses the circumferential rotation and self-rotation of the connecting rod to drive the disturbance plate to stir the synthetic raw materials, but this results in the synthetic raw materials in the middle of the reaction tank not being effectively stirred, and the reaction raw materials on the side and in the middle of the reaction tank not being fully mixed.

[0006] To achieve the above objectives, this utility model provides a mixing device for the production of 4,4'-diaminodiphenylmethane, including a mixing tank and a support rod. The support rod is fixedly installed on the mixing tank. The device also includes a stirring device, which includes a connecting shaft, a flipping rod, a first flip plate, a second flip plate, a connecting assembly, and a transmission assembly. The connecting shaft is rotatably installed on the mixing tank via the transmission assembly and extends to the outside of the mixing tank. The flipping rod is installed on the connecting shaft via the connecting assembly. The first flip plate is fixedly installed on the flipping rod, and the second flip plate is fixedly installed on the connecting shaft.

[0007] The connecting assembly includes a first connecting plate and a second connecting plate. The first connecting plate is fixedly mounted on the connecting shaft. The second connecting plate is fixedly mounted on the connecting shaft and located at the end of the connecting shaft away from the first connecting plate. The two ends of the flipping rod are fixedly connected to the first connecting plate and the second connecting plate, respectively.

[0008] The transmission assembly includes a transmission gear and a rotating component. The transmission gear is fixedly mounted on the connecting shaft and located outside the mixing tank; the rotating component is located outside the mixing tank.

[0009] The rotating component includes a rotating gear and a rotating shaft. The rotating shaft is rotatably mounted on the outside of the mixing tank. The rotating gear is fixedly mounted on the rotating shaft and meshes with the transmission gear.

[0010] The connecting assembly further includes an agitating component, which includes a first agitating rod and a second agitating rod. The first agitating rod is fixedly installed on the first connecting plate, and the second agitating rod is fixedly installed on the second connecting plate.

[0011] This invention relates to a mixing device for the production of 4,4'-diaminodiphenylmethane. In use, synthetic raw materials are injected into a mixing tank, and the internal pressure of the mixing tank is increased by an external pressurizing device. Simultaneously, a motor drives a rotating shaft to rotate, which in turn drives a rotating gear. The rotating gear meshes with a transmission gear, which in turn drives a connecting shaft fixedly connected to it to rotate. The rotation of the connecting shaft, through a first connecting plate and a second connecting plate, causes a circumferential rotation of a flipping rod. The flipping rod then drives a first flipping plate to rotate, thus agitating the internal synthetic raw materials. Furthermore, the rotation of the connecting shaft also drives the second flipping plate to rotate. Therefore, the circumferential rotation of the first and second flipping plates ensures that the synthetic raw materials in the upper, lower, and middle sections of the mixing tank are thoroughly agitated and mixed. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0013] Figure 1 This is a schematic diagram of the overall structure of a mixing device for the production of 4,4'-diaminodiphenylmethane according to this utility model.

[0014] Figure 2 This is a schematic diagram of the stirring device of this utility model.

[0015] In the diagram: 101-mixing tank, 102-support rod, 103-connecting shaft, 104-tilting rod, 105-first flap, 106-second flap, 107-first connecting plate, 108-second connecting plate, 109-transmission gear, 110-rotating gear, 111-rotating shaft, 112-first stirring rod, 113-second stirring rod. Detailed Implementation

[0016] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.

[0017] The embodiment of this application is as follows:

[0018] Please see Figure 1-2 , Figure 1 This is a schematic diagram of the overall structure of a mixing device for the production of 4,4'-diaminodiphenylmethane according to this utility model. Figure 2 This is a schematic diagram of the stirring device of this utility model.

[0019] This utility model provides a mixing device for the production of 4,4'-diaminodiphenylmethane: it includes a mixing tank 101 and a support rod 102, and also includes a stirring device. The stirring device includes a connecting shaft 103, a turning rod 104, a first turning plate 105, a second turning plate 106, a connecting assembly, and a transmission assembly. The connecting assembly includes a first connecting plate 107 and a second connecting plate 108. The transmission assembly includes a transmission gear 109 and a rotating component. The rotating component includes a rotating gear 110 and a rotating shaft 111. The connecting assembly also includes a stirring component, which includes a first stirring rod 112 and a second stirring rod 113. The aforementioned solution solves the problem that the aforementioned device uses the circumferential rotation and self-rotation of the connecting rod to drive the disturbance plate to stir the synthetic raw materials, but this results in the synthetic raw materials in the middle of the reaction tank not being effectively stirred, and the reaction raw materials on the sides and in the middle of the reaction tank not being fully mixed.

[0020] In this embodiment, the circumferential rotation of the first flap 105 and the circumferential rotation of the second flap 106 ensure that the synthetic raw materials in the upper, lower and middle parts of the mixing tank 101 are fully agitated and mixed.

[0021] The connecting shaft 103 is rotatably mounted on the mixing tank 101 via the transmission assembly and extends to the outside of the mixing tank 101. The flipping rod 104 is mounted on the connecting shaft 103 via the connecting assembly. The first flipping plate 105 is fixedly mounted on the flipping rod 104, and the second flipping plate 106 is fixedly mounted on the connecting shaft 103. The connecting shaft 103 is rotatably engaged with the inner wall of the mixing tank 101 via bearings. There are four sets of flipping rods 104, arranged in a ring around the outer periphery of the connecting shaft 103. The first flipping plate 105 is welded to the flipping rod 104, and the second flipping plate 106 is welded to the connecting shaft 103. The mixing tank 101 is equipped with inlet and outlet pipes at its upper and lower ends, respectively, and control valves are provided on the inlet and outlet pipes. An air inlet pipe is also provided at the top of the mixing tank 101, and a high-pressure air valve is provided on the air inlet pipe to facilitate pressurization into the mixing tank 101. In use, the connecting shaft 103 is driven to rotate by the transmission assembly, so that the connecting shaft 103 drives the axis of the second flap 106 to rotate. At the same time, the rotation of the connecting shaft 103 drives multiple sets of flipping rods 104 to rotate circumferentially through the connecting assembly, and causes the first flap 105 to rotate. Thus, under the circumferential rotation of the first flap 105 and the circumferential rotation of the second flap 106, the synthetic raw materials in the upper, lower and middle parts of the mixing tank 101 are fully agitated and mixed.

[0022] Secondly, the first connecting plate 107 is fixedly installed on the connecting shaft 103; the second connecting plate 108 is fixedly installed on the connecting shaft 103 and located at the end of the connecting shaft 103 away from the first connecting plate 107. The two ends of the flipping rod 104 are fixedly connected to the first connecting plate 107 and the second connecting plate 108 respectively. The first connecting plate 107 and the second connecting plate 108 are respectively welded to the two ends of the connecting shaft 103. Through the cooperation of the first connecting plate 107 and the second connecting plate 108, it is convenient to install the flipping rod 104.

[0023] Furthermore, the transmission gear 109 is fixedly mounted on the connecting shaft 103 and located outside the mixing tank 101; the rotating component is disposed outside the mixing tank 101, and the transmission gear 109 is keyed to the connecting shaft 103. In use, the rotation of the transmission gear 109 is driven by the rotating component, thereby causing the transmission gear 109 to drive the connecting shaft 103 to rotate.

[0024] Furthermore, the rotating shaft 111 is rotatably mounted on the outside of the mixing tank 101; the rotating gear 110 is fixedly mounted on the rotating shaft 111 and meshes with the transmission gear 109. The rotating shaft 111 is driven by an external motor, and the rotating gear 110 is keyed to the rotating shaft 111. Under the drive of the external motor, the rotating shaft 111 causes the rotating gear 110 to rotate. The rotating gear 110, through meshing with the transmission gear 109, drives the transmission gear 109 to rotate.

[0025] Finally, the first stirring rod 112 is fixedly installed on the first connecting plate 107; the second stirring rod 113 is fixedly installed on the second connecting plate 108. The first stirring rod 112 and the second stirring rod 113 are respectively welded to the first connecting plate 107 and the second connecting plate 108. By rotating the first connecting plate 107 and the second connecting plate 108, the first stirring rod 112 and the second stirring rod 113 will rotate, further increasing the stirring effect on the synthetic raw materials.

[0026] In this embodiment, during use, the synthetic raw materials are injected into the mixing tank 101, and the internal air pressure of the mixing tank 101 is increased by an external pressurizing device. At the same time, the rotating shaft 111 is driven to rotate by a motor. The rotating shaft 111 drives the rotating gear 110 to rotate. The rotating gear 110 meshes with the transmission gear 109, driving the transmission gear 109 to rotate. The transmission gear 109 drives the connecting shaft 103, which is fixedly connected to it, to rotate. The rotation of the connecting shaft 103 drives the flipping rod 104 to rotate circumferentially through the first connecting plate 107 and the second connecting plate 108. The flipping rod 104 then drives the first flipping plate 105 to rotate, thus flipping the synthetic raw materials inside. When the connecting shaft 103 rotates, it also drives the second flipping plate 106 to rotate. Thus, under the circumferential rotation of the first flipping plate 105 and the second flipping plate 106, the synthetic raw materials in the upper, lower and middle parts of the mixing tank 101 are fully flipped and mixed.

[0027] The above-disclosed embodiments are merely one or more preferred embodiments of this application and should not be construed as limiting the scope of this application. Those skilled in the art will understand that all or part of the processes for implementing the above embodiments and equivalent variations made in accordance with the claims of this application are still within the scope of this application.

Claims

1. A mixing apparatus for the production of 4,4'-diaminodiphenylmethane, comprising a mixing tank and a support rod, wherein the support rod is fixedly mounted on the mixing tank, characterized in that, It also includes a stirring device; The stirring device includes a connecting shaft, a flipping rod, a first flipping plate, a second flipping plate, a connecting assembly, and a transmission assembly. The connecting shaft is rotatably mounted on the mixing tank via the transmission assembly and extends to the outside of the mixing tank. The flipping rod is mounted on the connecting shaft via the connecting assembly. The first flipping plate is fixedly mounted on the flipping rod, and the second flipping plate is fixedly mounted on the connecting shaft.

2. The mixing apparatus for producing 4,4'-diaminodiphenylmethane as described in claim 1, characterized in that, The connecting assembly includes a first connecting plate and a second connecting plate. The first connecting plate is fixedly mounted on the connecting shaft. The second connecting plate is fixedly mounted on the connecting shaft and located at the end of the connecting shaft away from the first connecting plate. The two ends of the flipping rod are fixedly connected to the first connecting plate and the second connecting plate, respectively.

3. The mixing apparatus for producing 4,4'-diaminodiphenylmethane as described in claim 1, characterized in that, The transmission assembly includes a transmission gear and a rotating component. The transmission gear is fixedly mounted on the connecting shaft and located outside the mixing tank; the rotating component is located outside the mixing tank.

4. The mixing apparatus for producing 4,4'-diaminodiphenylmethane as described in claim 3, characterized in that, The rotating component includes a rotating gear and a rotating shaft. The rotating shaft is rotatably mounted on the outside of the mixing tank. The rotating gear is fixedly mounted on the rotating shaft and meshes with the transmission gear.

5. The mixing apparatus for producing 4,4'-diaminodiphenylmethane as described in claim 2, characterized in that, The connecting assembly further includes an agitating component, which includes a first agitating rod and a second agitating rod. The first agitating rod is fixedly installed on the first connecting plate, and the second agitating rod is fixedly installed on the second connecting plate.

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