Combined reactor stirring impeller

Abstract

The utility model discloses a combined reactor stirring impeller which comprises a combined structure, a connecting assembly and connecting structures, the connecting assembly and a spring are installed in the combined structure, turbine blades are installed on the outer side of the connecting assembly, and the top end and the bottom end of the outer side of the combined structure are connected with the connecting structures. Anchor type paddles are mounted on the outer side of the connecting structure, an elastic rubber pad is mounted in the inner side wall of the combined structure, the combined structure comprises an upper shell, a lower shell, bolts, mounting grooves, first threaded connecting holes and a shaft hole, the mounting grooves are formed in the side walls of the upper shell and the lower shell at equal angles, and the elastic rubber pads are fixedly mounted in the mounting grooves. According to the combined reactor stirring impeller, the paddles are convenient to disassemble and assemble, the turbine paddles can generate tiny position changes, the contact area between the turbine paddles and reactants is increased, so that the stirring effect is improved, the two paddles of different types are arranged, the stirring strength is improved, and the production efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of reactor stirring impeller technology, specifically a combined reactor stirring impeller. Background Art

[0002] The production of spandex polymer dopes generally involves a two-step reaction: First, two raw materials, diphenylmethane-4,4'-diisocyanate (MDI) and polytetramethylene ether glycol (PTMG), are mixed in appropriate proportions to generate an isocyanate-terminated prepolymer containing urethane; this reaction is called prepolymerization. Second, the prepolymer solution and an amine solution are mixed and reacted to generate a high-molecular-weight polymer dope containing urea groups; this reaction is called chain extension. The second step, the reaction between the prepolymer solution and the amine solution, is completed in a reactor after thorough stirring by an impeller; therefore, the impeller is one of the key components affecting reaction efficiency.

[0003] Referring to Chinese Patent Publication No. CN209406328U, published on December 18, 2018, a stirring impeller for a spandex polymerization reactor is disclosed, comprising 12 stirring blades evenly arranged radially on a disc with a shaft hole as the center. The traditional stirring impeller has 9 stirring blades, but this is reduced to 12, increasing the contact area between the reactants and the stirring blades, and thus enhancing the stirring intensity. Multiple sets of grooves are formed on the working surface of the stirring blades, with each groove forming an angle of 40-80° with the line connecting the center of the shaft hole to the end of the impeller. By adjusting the width of each groove group and the width and depth of the grooves, the contact area between the reactants and the stirring blades is further increased, effectively altering the trajectory of the reactants in the reactor, eliminating viscosity fluctuations, thereby achieving better stirring results, shortening the residence time of the reactants in the reactor, and improving the reactor's production capacity.

[0004] However, existing combined reactor impellers are inconvenient to disassemble and assemble, and have low mixing efficiency, as exemplified in the comparative patent above. Therefore, we propose a combined reactor impeller to solve the problems mentioned above. Utility Model Content

[0005] The purpose of this invention is to provide a combined reactor impeller to solve the problems mentioned in the background art, such as the inconvenience of disassembly and assembly of existing combined reactor impellers and the low mixing efficiency.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a combined reactor stirring impeller, comprising a combined structure, a connecting component, and a connecting structure. The combined structure has a connecting component and a spring installed inside, a turbine blade installed on the outside of the connecting component, a connecting structure connecting the top and bottom ends of the outer side of the combined structure, an anchor blade installed on the outside of the connecting structure, a rotating shaft connected to the inside of the connecting structure, and an elastic rubber pad installed inside the inner wall of the combined structure.

[0007] Preferably, the combined structure includes an upper shell, a lower shell, bolts, a mounting groove, a first threaded connection hole, and a shaft hole. The upper shell and the lower shell have mounting grooves formed at equal angles on their side walls, and an elastic rubber pad is fixedly installed in the mounting groove.

[0008] Preferably, the upper and lower shells have first threaded connection holes at equal angles on their top and bottom walls.

[0009] Preferably, the upper and lower shells are provided with shaft holes in the middle of the top and bottom walls, and a rotating shaft is connected in the shaft holes.

[0010] Preferably, springs are fixedly connected to the inner sides of the top and bottom of the upper and lower shells, and the lower shell is fixedly connected to the bottom of the upper shell by bolts.

[0011] Preferably, the connecting assembly includes a connecting plate and a connecting hole. The connecting plate has a connecting hole that extends through and connects to the outside of the bolt's thread. Springs are provided at both the top and bottom of the connecting plate.

[0012] Preferably, a turbine blade is fixedly connected to the end of the connecting plate away from the connecting hole.

[0013] Preferably, the connection structure includes a fixed ring post, a screw, and a second threaded connection hole. The second threaded connection hole is formed at an equal angle inside the fixed ring post and the rotating shaft, and the fixed ring post and the rotating shaft are fixedly connected by a screw.

[0014] Preferably, an upper shell and a lower shell are fixedly connected to one end of the fixed ring post, and an anchor-type blade is fixedly installed on the outer side of the end of the fixed ring post away from the upper shell and the lower shell.

[0015] Compared with the prior art, the beneficial effects of this utility model are: the impeller blades of the combined reactor are easy to disassemble and assemble, the turbine blades can undergo slight positional changes to increase their contact area with the reactants, thereby improving the stirring effect, and the two different types of blades are set to increase the stirring intensity, thereby improving production efficiency.

[0016] 1. It is equipped with a combination structure, connecting components and connecting structure. The connecting plate is placed in the mounting slot, the connecting round hole in the connecting plate is aligned with the first threaded hole at the bottom of the lower shell, the mounting slot of the upper shell is aligned with the mounting slot of the lower shell and connected, the connecting plate is snapped in place, and the upper and lower shells and the lower shell are fixed with bolts, so as to facilitate the disassembly and assembly of the turbine blades.

[0017] Furthermore, the rotating shaft is placed inside the fixing ring of the connecting structure, so that the second threaded hole inside the fixing ring and the second threaded hole inside the rotating shaft are aligned, and screws are tightened in to fix it, thereby facilitating the assembly and disassembly of the rotating shaft.

[0018] 2. It is equipped with elastic rubber pads and springs. Elastic rubber pads are fixedly installed in the mounting grooves of the upper and lower shells. The upper and lower shells and connecting plates are set at both ends of the springs. The springs and elastic rubber pads are connected to the connecting plates, which can move up and down slightly. The connecting plates drive the turbine blades to move up and down. The turbine blades can undergo slight positional changes, increasing their contact area with the reactants, thereby improving the stirring effect.

[0019] Furthermore, the connecting plate does not directly contact the mounting groove, thus the elastic rubber pad has a certain degree of elasticity, which can reduce the damage caused by the collision between the connecting plate and the mounting groove during operation.

[0020] 3. It is equipped with anchor blades and turbine blades. An anchor blade is fixedly installed on the outer side of the fixed ring column away from the upper and lower shells. The anchor blade and turbine blade work together to mix the reactants, thereby improving production efficiency. Attached Figure Description

[0021] Figure 1 This is a frontal sectional view of the present invention.

[0022] Figure 2 This is a schematic diagram of the front view structure of the utility model;

[0023] Figure 3 This is a top view sectional diagram of the present invention;

[0024] Figure 4 This is a schematic diagram of the lower shell structure of this utility model;

[0025] Figure 5 This is a schematic diagram of the fixed ring column structure of this utility model.

[0026] In the diagram: 1. Combined structure; 101. Upper shell; 102. Lower shell; 103. Bolt; 104. Mounting groove; 105. First threaded connection hole; 106. Shaft hole; 2. Spring; 3. Connecting assembly; 301. Connecting plate; 302. Connecting round hole; 4. Turbine blade; 5. Connecting structure; 501. Fixing ring column; 502. Screw; 503. Second threaded connection hole; 6. Anchor blade; 7. Rotating shaft; 8. Elastic rubber pad. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0028] Please see Figures 1-5 The present invention provides the following technical solution:

[0029] Example 1: Existing reactor impellers are inconvenient to disassemble and assemble. To solve this technical problem, this example discloses the following technical content:

[0030] A combined reactor impeller includes a combined structure 1, a connecting component 3 and a connecting structure 5. The connecting component 3 and a spring 2 are installed inside the combined structure 1. A turbine blade 4 is installed on the outside of the connecting component 3. The top and bottom ends of the outside of the combined structure 1 are connected to the connecting structure 5. An anchor blade 6 is installed on the outside of the connecting structure 5. A rotating shaft 7 is connected to the inside of the connecting structure 5. An elastic rubber pad 8 is installed inside the inner wall of the combined structure 1.

[0031] like Figures 1-5 As shown, the connecting assembly 3 includes a connecting plate 301 and a connecting hole 302. The connecting plate 301 has a connecting hole 302. A turbine blade 4 is fixedly connected to the end of the connecting plate 301 away from the connecting hole 302. The combined structure 1 includes an upper shell 101, a lower shell 102, bolts 103, mounting grooves 104, first threaded connecting holes 105, and shaft holes 106. Mounting grooves 104 are formed at equal angles in the side walls of the upper shell 101 and the lower shell 102. First threaded connecting holes 105 are formed at equal angles in the top and bottom walls of the upper shell 101 and the lower shell 102. Six connecting plates 301 are aligned with six mounting grooves 104 and placed into the lower shell 102. After mounting the upper shell 101 in the mounting slot 104, align the mounting slot 104 of the upper shell 101 with the mounting slot 104 of the lower shell 102, so that the two mounting slots 104 hold the connecting plate 301. Use the screw of the bolt 103 to screw into the first threaded connection hole 105 of the upper shell 101, so that it passes through the connecting round hole 302, and screw into the first threaded connection hole 105 of the lower shell 102. Tighten the nut of the bolt 103 from the screw that is screwed out from the bottom of the lower shell 102. The remaining bolts 103 are operated in the same way. When disassembling the turbine blade 4, unscrew the nut, unscrew all the screws, remove the upper shell 101, and then remove the turbine blade 4 one by one.

[0032] The connecting structure 5 includes a fixing ring post 501, a screw 502, and a second threaded connection hole 503. One end of the fixing ring post 501 is fixedly connected to the upper shell 101 and the lower shell 102 respectively. The second threaded connection hole 503 is opened at equal angles in the fixing ring post 501 and the rotating shaft 7. The upper shell 101 and the lower shell 102 are both provided with shaft holes 106 in the middle of the top and bottom end walls. After the turbine blade 4 is installed, the rotating shaft 7 is inserted into the fixing ring post 501 and the shaft hole 106. The second threaded connection hole 503 in the fixing ring post 501 and the rotating shaft 7 is aligned and screwed in with the screw 502. When disassembling, all the screws 502 are unscrewed and the fixing ring post 501 can be taken out from below or above the rotating shaft 7.

[0033] Example 2: The contact area between the turbine blades 4 and the reactants in the existing reactor impeller is relatively small, which affects the stirring effect. To solve this technical problem, this example discloses the following technical content:

[0034] like Figure 1 As shown, elastic rubber pads 8 are fixedly installed in the mounting grooves 104 of both the upper shell 101 and the lower shell 102, so that the connecting plate 301 does not directly contact the mounting groove 104, thereby reducing the damage caused by the collision between the connecting plate 301 and the mounting groove 104 during operation. The elastic rubber pads 8 have a certain elasticity, and the connecting round hole 302 is connected through the outside of the bolt 103, so that when the stirring impeller is running, the connecting plate 301 can move up and down slightly. The connecting plate 301 drives the turbine blade 4 to move up and down, and the turbine blade 4 can undergo a slight positional change, increasing its contact area with the reactants, thereby improving the stirring effect.

[0035] Furthermore, springs 2 are fixedly connected to the inner sides of the top and bottom of the upper shell 101 and the lower shell 102. All springs 2 are provided with connecting plates 301 at the ends away from the upper shell 101 and the lower shell 102, so that the elastic rubber pads 8 and the springs 2 cooperate to allow the connecting plates 301 to move up and down stably.

[0036] Example 3: The technical content disclosed in this example is a further improvement based on Example 1 above. Existing reactor impellers have relatively weak stirring intensity, thus affecting production efficiency. To solve this technical problem, this example discloses the following technical content:

[0037] like Figure 1 , Figure 2 and Figure 5As shown, an anchor blade 6 is fixedly installed on the outer side of the fixed ring column 501 away from the upper shell 101 and the lower shell 102. The anchor blade 6 and the turbine blade 4 work together to mix the reactants. The outer edge shape of the anchor blade 6 should be consistent with the inner wall of the mixing tank, with only a small gap between them. This can remove the sticky reaction products attached to the tank wall, maintain a good heat transfer effect, and its structure is simple and easy to produce. The turbine blade 4 can disperse the fluid micro-particles very finely, which can promote good heat transfer, mass transfer and chemical reaction, thereby improving production efficiency.

[0038] The above completes a series of operations for the agitator impeller of the combined reactor. Any content not described in detail in this specification is existing technology known to those skilled in the art.

[0039] All standard parts used in this utility model can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here.

[0040] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A combined reactor impeller, comprising a combined structure (1), a connecting assembly (3), and a connecting structure (5), characterized in that: The combined structure (1) is equipped with a connecting component (3) and a spring (2) inside. A turbine blade (4) is installed on the outside of the connecting component (3). A connecting structure (5) is connected to the top and bottom of the outside of the combined structure (1). An anchor blade (6) is installed on the outside of the connecting structure (5). A rotating shaft (7) is connected to the inside of the connecting structure (5). An elastic rubber pad (8) is installed inside the inner wall of the combined structure (1).

2. The combined reactor impeller according to claim 1, characterized in that: The combined structure (1) includes an upper shell (101), a lower shell (102), a bolt (103), a mounting groove (104), a first threaded connection hole (105), and a shaft hole (106). The upper shell (101) and the lower shell (102) have mounting grooves (104) at equal angles on their side walls. An elastic rubber pad (8) is fixedly installed in the mounting groove (104).

3. The combined reactor impeller according to claim 2, characterized in that: The upper shell (101) and the lower shell (102) have first threaded connection holes (105) at equal angles on the top and bottom walls.

4. The combined reactor impeller according to claim 2, characterized in that: The upper shell (101) and the lower shell (102) are provided with shaft holes (106) in the middle of the top and bottom walls, and a rotating shaft (7) is connected in the shaft hole (106).

5. The combined reactor stirring impeller according to claim 2, characterized in that: Springs (2) are fixedly connected to the inner sides of the top and bottom of the upper shell (101) and the lower shell (102), and the lower shell (102) is fixedly connected to the bottom of the upper shell (101) by bolts (103).

6. The combined reactor impeller according to claim 1, characterized in that: The connecting assembly (3) includes a connecting plate (301) and a connecting hole (302). The connecting plate (301) has a connecting hole (302) inside. The connecting hole (302) is connected through to the outside of the bolt (103). The top and bottom ends of the connecting plate (301) are provided with springs (2).

7. The combined reactor impeller according to claim 6, characterized in that: The connecting plate (301) is fixedly connected to a turbine blade (4) at the end away from the connecting hole (302).

8. The combined reactor stirring impeller according to claim 1, characterized in that: The connection structure (5) includes a fixed ring post (501), a screw (502) and a second threaded connection hole (503). The second threaded connection hole (503) is opened at equal angles in the fixed ring post (501) and the rotating shaft (7). The fixed ring post (501) and the rotating shaft (7) are fixedly connected by the screw (502).

9. The combined reactor impeller according to claim 8, characterized in that: One end of the fixed ring post (501) is fixedly connected to the upper shell (101) and the lower shell (102), and an anchor blade (6) is fixedly installed on the outer side of the fixed ring post (501) away from the upper shell (101) and the lower shell (102).

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