Full-mixing high-viscosity horizontal reaction kettle

Abstract

The invention discloses a full-mixing high-viscosity horizontal reaction kettle, and relates to the technical field of mixing equipment, the full-mixing high-viscosity horizontal reaction kettle comprises a horizontal kettle body, a stirring mechanism is arranged in the kettle body, the stirring mechanism comprises an outer helical ribbon, an inner helical ribbon and shaft bodies arranged at the two ends of the kettle body, and the two shaft bodies are connected through a connecting assembly; the connecting assembly comprises a plurality of connecting rods which are uniformly distributed in the circumferential direction of the inner side of the kettle body at intervals, and each connecting rod is of a square bracket-shaped structure; two groups of inner helical ribbons and two groups of outer helical ribbons with opposite helical directions are respectively arranged on the outer side and the inner side of the connecting assembly; mechanical sealing devices are respectively arranged at two ends of the kettle body, the two shaft bodies are respectively and rotatably connected with the kettle body through the mechanical sealing devices, and one of the shaft bodies extends out of the mechanical sealing devices and is connected with a driving mechanism. The reaction kettle can realize all-directional high-efficiency mixing of materials, is suitable for a high-viscosity material reaction system, and is provided with a temperature measurement space, so that the temperature in the reaction kettle can be accurately monitored.

Description

Technical Field

[0001] The invention relates to the technical field of mixing equipment, in particular to a fully mixed high-viscosity horizontal reactor. Background Art

[0002] Bulk polymerization is a common method for polymer production. Many polymer products such as general-purpose polystyrene, high-impact polystyrene, polyester, polyamide, etc. are produced in this way. Due to the high viscosity of the system in the later stage of the polymerization reaction, stirring, heat transfer and mixing become very difficult.

[0003] In view of the characteristics of the above materials, the prior art uses a screw-belt stirring mechanism to stir high-viscosity materials, which has achieved good results. For example, patent number CN98110857.1 discloses a reactor for bulk polymerization, which firstly uses a combination of two stirring paddles, a double screw belt and a special-shaped anchor, to fully mix the reaction materials under various liquid levels and viscosity conditions, and secondly, an internal cooling coil is set in the gap between the special-shaped anchor and the bottom of the reactor to improve the heat transfer capacity. Patent No. CN200810222743.8 discloses a horizontal mixing kettle, whose structure includes a kettle body, a central axis is arranged in the kettle body, and both ends of the kettle body are elliptical heads. A stirring assembly is arranged in the kettle body, which maintains an equidistant gap with the kettle wall. The stirring assembly consists of an anchor stirring frame fixed at both ends of the central axis and two inner and outer spiral belts with opposite spiral directions. A rolling bearing self-lubricating structure is arranged at the left end of the kettle body, and a flange is arranged at the right end. A container-type mechanical seal is fixed on the flange. The two ends of the kettle body of the horizontal mixing kettle of this invention are elliptical heads, and a container-type mechanical seal is arranged, so that the mixing kettle can withstand high pressure, has reliable performance and long service life, and the kettle body is stirred so that the materials can be quickly and evenly mixed in a relatively short time, and the stirring effect is good.

[0004] However, although the above patents have better stirring and mixing characteristics for high-viscosity materials than traditional reactors, they still have their shortcomings. For example, the existing technologies all adopt the design of the central axis, and the material is easy to adhere to the surface of the central axis and the connection between the central axis and the spiral belt, resulting in a stirring dead angle; in addition, the above two patents both use anchor agitators to stir the stirring dead angles at both ends of the reactor body. Since the existing reactors need to monitor the temperature of the reaction materials in real time, the above design cannot add a temperature monitoring instrument to monitor the temperature of the reaction materials, and is not suitable for the current reactors The high standards for mixing, temperature control, etc. Summary of the invention

[0005] The purpose of the present invention is to overcome the shortcomings of the above-mentioned technology and provide a fully mixed high-viscosity horizontal reactor, which can achieve all-round and high-efficiency mixing of materials and is suitable for high-viscosity material reaction systems. At the same time, temperature measurement space is left to facilitate accurate monitoring of the internal temperature of the reactor.

[0006] A fully mixed high-viscosity horizontal reactor, comprising a horizontal reactor body, characterized in that a stirring mechanism is arranged in the reactor body, the stirring mechanism comprises an outer spiral belt, an inner spiral belt and shaft bodies arranged at both ends of the reactor body, the two shaft bodies are connected by a connecting assembly, the connecting assembly comprises a plurality of connecting rods evenly spaced along the circumferential direction of the inner side of the reactor body, the connecting rods are of a square bracket-shaped structure, and the two ends of the connecting rods are respectively fixed on the two shaft bodies; the outer spiral belt is provided with two groups with opposite spiral directions, and the two groups of outer spiral belts are both arranged on the outer side of the connecting assembly, and the two ends of the outer spiral belt are respectively fixed at the two ends of the outer side of the connecting assembly; the inner spiral belt is provided with two groups with opposite spiral directions, and the two groups of inner spiral belts are both arranged on the inner side of the connecting assembly, and the two ends of the inner spiral belt are respectively fixed at the two ends of the inner side of the connecting assembly; mechanical sealing devices are respectively arranged at both ends of the reactor body, and the two shaft bodies are respectively rotatably connected to the reactor body through the mechanical sealing devices, and one of the shaft bodies extends out of the mechanical sealing device and is connected to the driving mechanism.

[0007] A further improvement of the present invention is that the driving mechanism includes a driving motor and a reducer, the output end of the driving motor is connected to the reducer through a driving coupling, and the output end of the reducer is connected to the shaft through a driven coupling.

[0008] A further improvement of the present invention is that the mechanical sealing device is a double-end surface mechanical sealing device, which has a better sealing effect, a longer service life, and can withstand high-speed rotation compared to ordinary mechanical sealing devices.

[0009] A further improvement of the present invention is that the connecting rod comprises a rod body parallel to the shaft body, and both ends of the rod body are bent at 90 degrees, so that the connecting rod has a square bracket-shaped structure.

[0010] A further improvement of the present invention is that an arc-shaped stirring piece is connected between the bending part of each connecting rod and the shaft body, and the curvature of the stirring piece is the same as the curvature of the inner side of the two ends of the kettle body. The two ends of the stirring piece are respectively welded to the connecting rod and the shaft body. The center of the stirring piece is disconnected, and a gap is left at the disconnection for the temperature monitoring instrument to be inserted. By arranging the stirring piece, the material on the inner side of the two ends of the kettle body and the shaft body can be stirred, effectively avoiding stirring dead corners, and at the same time leaving a gap for the temperature monitoring instrument to be inserted. While actually stirring in all directions, the use of the temperature monitoring instrument is not affected.

[0011] A further improvement of the present invention is that both ends of the kettle body are provided with a temperature monitoring instrument socket, a feed port and a discharge port.

[0012] A further improvement of the present invention is that eight connecting rods are provided, which effectively ensures the connection strength between the two shaft bodies.

[0013] The beneficial effects of the present invention are:

[0014] 1. The spiral ribbons with different spiral directions inside and outside are used as the main stirring structure to achieve rapid back-and-forth pushing and mixing of materials. For the mixing of high-viscosity materials, it has good heat transfer and mixing effects. The setting of inner and outer spiral ribbons and opposite spiral structures can greatly improve the stirring speed and uniformity.

[0015] 2. The use of multiple bracket-shaped connecting rods instead of the central axis not only plays a role in power transmission, but also participates in stirring and mixing, and to a certain extent acts as a stirring component, effectively avoiding the problem of dead corners in mixing caused by the material near the traditional rotating central axis not participating in the mixing.

[0016] 3. By setting stirring blades and leaving a certain gap, the materials on the inner sides of both ends of the kettle body can be stirred. During the rotation process, the gaps of the stirring blades will form an annular cavity, which can facilitate the placement of temperature monitoring instruments and real-time monitoring of the temperature of the reaction system, meeting the high standards of the reactor for mixing, temperature control, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the present invention.

[0018] Figure 2 It is an external view of the present invention.

[0019] Figure 3 It is a structural schematic diagram of the stirring mechanism of the present invention.

[0020] In the figure: kettle body 1, stirring mechanism 2, outer screw belt 3, inner screw belt 4, shaft body 5, connecting assembly 6, connecting rod 7, mechanical sealing device 8, driving mechanism 9, driving motor 10, reducer 11, active coupling 12, driven coupling 13, rod body 14, stirring piece 15, temperature monitoring instrument socket 16, feed port 17, discharge port 18. DETAILED DESCRIPTION

[0021] The technical solution of the present invention is further described in detail below through specific embodiments and in conjunction with the accompanying drawings:

[0022] like Figure 1-3As shown, a fully mixed high-viscosity horizontal reactor comprises a horizontal reactor body 1, wherein a stirring mechanism 2 is arranged in the reactor body 1, wherein the stirring mechanism 2 comprises an outer spiral belt 3, an inner spiral belt 4 and shaft bodies 5 arranged at both ends of the reactor body 1, wherein the two shaft bodies 5 are connected by a connecting assembly 6, wherein the connecting assembly 6 comprises a plurality of connecting rods 7 uniformly spaced along the circumferential direction of the inner side of the reactor body 1, wherein the connecting rods 7 are of a square bracket-shaped structure, and the two ends of the connecting rods 7 are respectively fixed on the two shaft bodies 5; the outer spiral belt 3 is provided with two groups with opposite spiral directions, and the two groups of outer spiral belts 3 are both arranged on the outer side of the connecting assembly 6, and the two ends of the outer spiral belt 3 are respectively fixed on the two ends of the outer side of the connecting assembly 6; the inner spiral belt 4 is provided with two groups with opposite spiral directions, and the two groups of inner spiral belts 4 are both arranged on the inner side of the connecting assembly 6, and the two ends of the inner spiral belt 4 are respectively fixed on the two ends of the inner side of the connecting assembly 6; mechanical sealing devices 8 are respectively arranged at both ends of the reactor body 1, and the two shaft bodies 5 are respectively rotatably connected to the reactor body 1 through the mechanical sealing devices 8, wherein one shaft body 5 extends out of the mechanical sealing device 8 and is connected to a driving mechanism 9.

[0023] In this embodiment, the driving mechanism 9 includes a driving motor 10 and a reducer 11 . The output end of the driving motor 10 is connected to the reducer 11 through a driving coupling 12 , and the output end of the reducer 11 is connected to the shaft 5 through a driven coupling 13 .

[0024] In this embodiment, the mechanical sealing device 8 is a double-end surface mechanical sealing device, which has a better sealing effect, a longer service life, and can withstand high-speed rotation compared to ordinary mechanical sealing devices.

[0025] In this embodiment, the connecting rod 7 includes a rod body 14 parallel to the shaft body 5. Both ends of the rod body 14 are bent at 90 degrees, so that the connecting rod 7 has a square bracket-shaped structure.

[0026] In this embodiment, an arc-shaped stirring blade 15 is connected between the bending part of each connecting rod 7 and the shaft body 5, and the curvature of the stirring blade 15 is the same as the curvature of the inner side of the two ends of the kettle body 1. The two ends of the stirring blade 15 are respectively welded to the connecting rod 7 and the shaft body 5. The center of the stirring blade 15 is disconnected, and a gap is left at the disconnection for the temperature monitoring instrument to be inserted. By setting the stirring blade 15, the material on the inner side of the two ends of the kettle body 1 and the shaft body 5 can be stirred, effectively avoiding stirring dead corners, and at the same time leaving a gap for the temperature monitoring instrument to be inserted. While actually stirring in all directions, the use of the temperature monitoring instrument is not affected.

[0027] In this embodiment, a temperature monitoring instrument socket 16 , a material inlet 17 and a material outlet 18 are provided at both ends of the kettle body 1 .

[0028] In this embodiment, eight connecting rods 7 are provided, which effectively ensures the connection strength between the two shaft bodies 5 .

[0029] In this embodiment, the kettle body 1 is a split structure and is sealed by a sealing connection structure. This design is to facilitate the assembly of the stirring mechanism 2. After the stirring mechanism 2 is installed in the kettle body 1, the kettle body 1 is installed through the sealing connection structure.

[0030] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limiting the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention without departing from the principles and purpose of the present invention. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A fully mixed high viscosity horizontal reactor, comprising a horizontal reactor body, characterized in that: A stirring mechanism is arranged in the kettle body, and the stirring mechanism includes an outer spiral belt, an inner spiral belt and shaft bodies arranged at both ends of the kettle body, and the two shaft bodies are connected by a connecting assembly, and the connecting assembly includes a plurality of connecting rods evenly spaced along the circumferential direction of the inner side of the kettle body, and the connecting rods are of a square bracket-shaped structure, and the two ends of the connecting rods are respectively fixed on the two shaft bodies; the outer spiral belt is provided with two groups with opposite spiral directions, and the two groups of outer spiral belts are arranged on the outer side of the connecting assembly, and the two ends of the outer spiral belt are respectively fixed at the two ends of the outer side of the connecting assembly; the inner spiral belt is provided with two groups with opposite spiral directions, and the two groups of inner spiral belts are arranged on the inner side of the connecting assembly, and the two ends of the inner spiral belt are respectively fixed at the two ends of the inner side of the connecting assembly; mechanical sealing devices are respectively arranged at both ends of the kettle body, and the two shaft bodies are respectively rotatably connected to the kettle body through the mechanical sealing devices, and one of the shaft bodies extends out of the mechanical sealing device and is connected to the driving mechanism.

2. A fully mixed high viscosity horizontal reactor according to claim 1, characterized in that: The driving mechanism comprises a driving motor and a reducer, wherein the output end of the driving motor is connected to the reducer via a driving coupling, and the output end of the reducer is connected to the shaft body via a driven coupling.

3. A fully mixed high viscosity horizontal reactor according to claim 1, characterized in that: The mechanical sealing device is a double-end mechanical sealing device.

4. A fully mixed high viscosity horizontal reactor according to claim 1, characterized in that: The connecting rod comprises a rod body parallel to the shaft body, and both ends of the rod body are bent at 90 degrees, so that the connecting rod has a square bracket-shaped structure.

5. A fully mixed high viscosity horizontal reactor according to claim 1 or 4, characterized in that: An arc-shaped stirring piece is connected between the bending part of each connecting rod and the shaft body, and the curvature of the stirring piece is the same as the curvature of the inner side of the two ends of the kettle body. The two ends of the stirring piece are respectively welded to the connecting rod and the shaft body. The stirring piece is disconnected at the center, and a gap is left at the disconnection for inserting a temperature monitoring instrument.

6. A fully mixed high viscosity horizontal reactor according to claim 1, characterized in that: The two ends of the kettle body are provided with a temperature monitoring instrument socket, a feed port and a discharge port.

7. A fully mixed high viscosity horizontal reactor according to claim 1, characterized in that: There are 8 connecting rods.

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