Efficient double-stirring vertical reaction kettle for PUR production

Abstract

The utility model discloses an efficient double-stirring vertical reaction kettle for PUR (Polyurethane) production. The efficient double-stirring vertical reaction kettle comprises a reaction kettle barrel, a stirring mechanism and a driving mechanism, the reaction kettle barrel comprises a barrel body, an upper dish-shaped seal head and a lower dish-shaped seal head; the stirring mechanism comprises a high-speed stirring shaft, a dispersing disc, a low-speed stirring shaft, a paddle type paddle, a stirring sleeve and a frame type paddle; and the driving mechanism comprises a low-speed driving mechanism and a high-speed driving mechanism. The low-speed stirring shaft is driven by the low-speed driving mechanism to rotate so as to drive the paddle-type paddle, the frame-type paddle and the helical ribbon-type paddle to rotate; the high-speed stirring shaft is driven by the high-speed driving mechanism to rotate so as to drive the dispersing disc to rotate, and the paddles driven by the low-speed stirring shaft and the dispersing disc driven by the high-speed stirring shaft are used for accelerating flowing, dispersing and mixing of powder and feed liquid close to the inner wall of the reaction kettle barrel, so that the feed liquid and the powder are prevented from being clustered or adhered to the inner wall of the reaction kettle barrel.

Description

Technical Field

[0001] The utility model relates to the technical field of PUR production, in particular to a high-efficiency double-stirring vertical reactor for PUR production. Background Art

[0002] Reactors are one of the indispensable equipment in chemical production, and the stirring efficiency of reactors affects the quality of chemical products. In the prior art, ordinary vertical shaft forced mixers can only be used to stir liquid materials with low viscosity. If high-viscosity liquids and powders are to be stirred during the PUR production process, due to the high viscosity of the liquid and the powders, when the stirring blades drive the liquid to rotate, the liquid and powders are basically in a clumping state and cannot be dispersed with the circulation of the blades. Therefore, the above prior art cannot achieve the goal of making the high-viscosity liquid containing powders dispersed and mixed uniformly. Utility Model Content

[0003] The utility model aims to provide a high-efficiency double-stirring vertical reactor for PUR production in view of the deficiencies in the prior art.

[0004] The purpose of the utility model is achieved through the following technical scheme: a high-efficiency double-stirring vertical reactor for PUR production, comprising a reactor cylinder, a stirring mechanism and a driving mechanism; the stirring mechanism is located inside the reactor cylinder; the driving mechanism is used to drive the stirring mechanism to drive the flow of liquid inside the reactor cylinder.

[0005] Furthermore, the reactor cylinder comprises a cylinder, an upper dish-shaped head and a lower dish-shaped head; the upper end of the cylinder is connected to the upper dish-shaped head; and the lower end of the cylinder is connected to the lower dish-shaped head.

[0006] Further, the stirring mechanism includes a high-speed stirring shaft, a dispersion disk, a low-speed stirring shaft, a paddle blade, a frame blade and a spiral blade; the driving mechanism includes a low-speed driving mechanism and a high-speed driving mechanism;

[0007] The high-speed stirring shaft is located inside the reactor cylinder and connected to the high-speed driving mechanism; the low-speed stirring shaft is located inside the reactor cylinder and connected to the low-speed driving mechanism; the paddle-type blades are sleeved on the low-speed stirring shaft; the frame-type blades are connected to the low-speed stirring shaft; the screw-belt blades are arranged on the frame-type blades; and the dispersion disk is sleeved on the high-speed stirring shaft.

[0008] Furthermore, the paddle blade includes a stirring blade and a stirring sleeve; the stirring sleeve is connected to the low-speed stirring shaft; and the stirring blade is connected to the stirring sleeve.

[0009] Furthermore, the number of the paddle blades is 3, which are evenly distributed on the low-speed stirring shaft.

[0010] Furthermore, the number of the dispersion discs is 2, which are evenly distributed on the high-speed stirring shaft.

[0011] Furthermore, the stirring mechanism also includes a bottom support arranged at the bottom of the reactor cylinder.

[0012] The beneficial effects of the utility model are as follows: the high-speed and low-speed stirring mechanisms are driven by a driving motor to stir the powder-containing liquid inside the reactor body, so that the liquid is quickly mixed and dispersed evenly; the low-speed driving mechanism drives the low-speed stirring shaft to rotate, so as to drive the paddle blades, the frame blades and the spiral blades to rotate, and the high-speed driving mechanism drives the high-speed stirring shaft to rotate, so as to drive the dispersion disk to rotate, and the high-speed and low-speed stirring shafts rotate simultaneously to disperse and stir the powder-containing liquid in the reactor body; wherein the paddle blades are suitable for driving the liquid to flow axially downward with shearing; wherein the frame blades are suitable for accelerating the flow of the liquid near the inner wall of the reactor body; wherein the spiral blades are suitable for driving the liquid to flow axially upward; and the dispersion disk is suitable for faster dispersion of the liquid in the reactor body, so as to avoid the liquid powder from agglomerating or adhering to the inner wall of the reactor body, thereby affecting the dispersion and mixing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 A schematic diagram of the results of a high-efficiency double-stirring vertical reactor for PUR production;

[0014] In the figure, 1-reactor cylinder; 11-cylinder; 12-upper dish-shaped head; 13-lower dish-shaped head; 2-stirring mechanism; 21-high-speed stirring shaft; 22-dispersion disk; 23-low-speed stirring shaft; 24-paddle blade; 241-stirring blade; 242-stirring sleeve; 26-frame blade; 27-ribbon blade; 28-kettle body support; 3-driving mechanism; 31-low-speed driving mechanism; 32-high-speed driving mechanism. DETAILED DESCRIPTION

[0015] In order to make the purpose, technical scheme and advantages of the present invention more clear, the present invention is further described in detail in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0016] Example 1

[0017] like Figure 1As shown, the utility model provides a high-efficiency double-stirring vertical reactor for PUR production, comprising a reactor cylinder 1, a stirring mechanism 2 and a driving mechanism 3; the stirring mechanism 2 is located inside the reactor cylinder 1; the driving mechanism 3 is used to drive the stirring mechanism 2 to drive the liquid flow inside the reactor cylinder 1.

[0018] Example 2

[0019] On the basis of Example 1, the reactor cylinder 1 includes a cylinder 11, an upper dish-shaped head 12 and a lower dish-shaped head 13; the upper end of the cylinder 11 is connected to the upper dish-shaped head 12; the lower end of the cylinder 11 is connected to the lower dish-shaped head 13.

[0020] Example 3

[0021] On the basis of Example 1, the stirring mechanism 2 includes a high-speed stirring shaft 21, a dispersion disk 22, a low-speed stirring shaft 23, a paddle blade 24, a frame blade 26 and a screw blade 27; the driving mechanism 3 includes a low-speed driving mechanism 31 and a high-speed driving mechanism 32;

[0022] The high-speed stirring shaft 21 is located inside the reactor cylinder 1 and connected to the high-speed driving mechanism 32; the speed of the high-speed stirring shaft 21 is 0-960rpm. The low-speed stirring shaft 23 is located inside the reactor cylinder 1 and connected to the low-speed driving mechanism 31; the speed of the low-speed stirring shaft 23 is 0-72rpm. The paddle blade 24 is sleeved on the low-speed stirring shaft 23; the frame blade 26 is connected to the low-speed stirring shaft 23; the spiral blade 27 is arranged on the frame blade 26 and fixed on the frame blade 26 by a fastening nut; the dispersion plate 22 is sleeved on the high-speed stirring shaft 21. The low-speed driving mechanism 31 is used to drive the low-speed stirring shaft 23 to drive the paddle blade 24, the frame blade 26 and the spiral blade 27 to rotate, and the high-speed driving mechanism 32 is used to drive the high-speed stirring shaft 21 to drive the dispersion plate 22 to rotate, and at the same time disperse and stir the liquid in the reactor cylinder 1.

[0023] The paddle blades 24 are used to drive the liquid to flow axially downward with shearing.

[0024] The frame blades 26 and the dispersion plate 22 are respectively used to accelerate the flow of the feed liquid near the inner wall of the reactor cylinder 1 to prevent the feed liquid from adhering to the inner wall of the reactor body 1 and affecting the dispersion effect.

[0025] The screw-ribbon blades 27 are used to drive the liquid to flow axially upward.

[0026] Example 4

[0027] On the basis of Example 3, the paddle blade 24 includes a stirring blade 241 and a stirring sleeve 242; the stirring sleeve 242 is connected to the low-speed stirring shaft 23 and is fixed to the low-speed stirring shaft 23 by a fastening nut to prevent the paddle blade 24 from slipping during the stirring process and affecting the stirring effect, and to avoid the paddle blade 24 from scratching with the frame blade 26 and the disc-belt blade 27; the stirring blade 241 is connected to the stirring sleeve 242.

[0028] The number of the paddle blades 24 is 3 and they are evenly distributed on the low-speed stirring shaft 23 .

[0029] The three paddle blades 24 are evenly distributed in three layers on the low-speed stirring shaft 23, which not only increases the contact area between the paddle blades 24 and the liquid, but also improves the stirring efficiency. At the same time, the three-layer even distribution makes the paddle blades 24 exert more uniform force on the liquid during the stirring process, further improving the stirring efficiency.

[0030] Example 5

[0031] On the basis of Example 1, the number of the dispersion discs 22 is 2, which are evenly distributed on the high-speed stirring shaft 21.

[0032] Example 6

[0033] On the basis of Example 1, the stirring mechanism 2 further comprises a bottom support 28 arranged at the bottom of the reactor cylinder 1 to support the low-speed stirring shaft 23 to enhance stirring stability.

[0034] In summary, the utility model provides a high-efficiency double-stirring vertical reactor for PUR production, wherein the low-speed driving mechanism 31 drives the low-speed stirring shaft 23 to rotate, so as to drive the paddle blades 24, the frame blades 26 and the spiral blades 27 to rotate, and mix and stir the liquid in the reactor body 11; the high-speed driving mechanism 32 drives the high-speed stirring shaft 21 to rotate, so as to drive the dispersion plate 22 to rotate, and at the same time disperse and stir the liquid in the reactor cylinder 1; the paddle blades 24 are suitable for driving the liquid to flow axially downward with shear; the frame blades 26 are suitable for accelerating the flow of the liquid near the inner wall of the reactor body 11; the spiral blades 27 are suitable for driving the liquid to flow axially upward; the dispersion plate 22 is suitable for faster dispersion and mixing of the liquid in the reactor body 11; so as to avoid the liquid powder from agglomerating or adhering to the inner wall of the reactor body, which affects the dispersion and mixing effect. The bottom support 28 is placed at the bottom of the reactor cylinder 1 to support the low-speed stirring shaft 23 to enhance the stirring stability.

[0035] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A high-efficiency double-stirring vertical reactor for PUR production, characterized in that: It comprises a reactor cylinder, a stirring mechanism and a driving mechanism; the stirring mechanism is located inside the reactor cylinder; the driving mechanism is used to drive the stirring mechanism to drive the liquid inside the reactor cylinder to flow; The stirring mechanism includes a high-speed stirring shaft, a dispersion disk, a low-speed stirring shaft, a paddle blade, a frame blade and a spiral blade; the driving mechanism includes a low-speed driving mechanism and a high-speed driving mechanism; The high-speed stirring shaft is located inside the reactor cylinder and connected to the high-speed driving mechanism; the low-speed stirring shaft is located inside the reactor cylinder and connected to the low-speed driving mechanism; the paddle-type blades are sleeved on the low-speed stirring shaft; the frame-type blades are connected to the low-speed stirring shaft; the screw-belt blades are arranged on the frame-type blades; and the dispersion disk is sleeved on the high-speed stirring shaft.

2. The high-efficiency double-stirring vertical reactor for PUR production according to claim 1, characterized in that: The reactor cylinder comprises a cylinder, an upper dish-shaped head and a lower dish-shaped head; the upper end of the cylinder is connected to the upper dish-shaped head; and the lower end of the cylinder is connected to the lower dish-shaped head.

3. The high-efficiency double-stirring vertical reactor for PUR production according to claim 1, characterized in that: The paddle blade comprises a stirring blade and a stirring sleeve; the stirring sleeve is connected to a low-speed stirring shaft; and the stirring blade is connected to the stirring sleeve.

4. The high-efficiency double-stirring vertical reactor for PUR production according to claim 3, characterized in that: The number of the paddle blades is 3, which are evenly distributed on the low-speed stirring shaft.

5. The high-efficiency double-stirring vertical reactor for PUR production according to claim 1, characterized in that: The number of the dispersion discs is 2, which are evenly distributed on the high-speed stirring shaft.

6. The high-efficiency double-stirring vertical reactor for PUR production according to claim 1, characterized in that: The stirring mechanism also includes a bottom support arranged at the bottom of the reactor cylinder.

Images