Reaction kettle for preparing low-odor polyurea adhesive

By adopting an adjustable stirring blade angle design in the reactor, the problems of uneven mixing and insufficient shear force caused by the fixed stirring blade structure are solved, realizing uniform mixing and efficient stirring of materials, improving the quality of low-odor polyurea adhesive and reducing odor generation.

CN223628637UActive Publication Date: 2025-12-05ZHENGZHOU YUCHANG BUILDING ENERGY SAVING TECH CO LTD
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Patent Information

Application Number
CN202520240919.1
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-02-14
Publication Date
2025-12-05
Estimated Expiration
2035-02-14

AI Technical Summary

Technical Problem

The fixed structure of the stirring blades in traditional reactors cannot adapt to the viscosity changes of low-odor polyurea adhesives, resulting in uneven mixing and insufficient shear force, which affects the quality of the adhesive and may produce odors.

Method used

An adjustable stirring blade angle reactor was designed. The stirring blade angle is adjusted by driving the lifting sleeve with an electric push rod. Combined with the parallelogram structure and guide structure, the stirring blades are linked and stabilized to adapt to changes in material viscosity.

Benefits of technology

It improves the mixing effect, ensures uniform mixing of materials, reduces odor generation, and enhances the preparation quality and efficiency of low-odor polyurea adhesives.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a reaction kettle for preparing a low-odor polyurea adhesive, which relates to the technical field of adhesive production and comprises a kettle body, a stirring mechanism and a transmission mechanism, the stirring mechanism comprises a stirring shaft and eight stirring blades, the top end of the stirring shaft is rotatably mounted at the top end of the kettle body, and four shaft sleeves on the shaft are connected with the stirring blades; a first connecting rod is arranged between the head ends of the upper and lower adjacent paddles to form a parallelogram structure to realize linkage; a lifting sleeve at the top end of the stirring shaft is connected with a top paddle through a second connecting rod and is driven by an electric push rod to lift, so that the paddle angle can be adjusted in real time according to the material viscosity and the reaction stage; compared with a traditional reaction kettle, the reaction kettle has the advantages that the stirring effect is better, uniform mixing of materials can be ensured in different stages, the shearing force is enhanced, peculiar smell is effectively reduced, the production efficiency and the product quality are improved, and the reaction kettle is suitable for efficient preparation of the low-odor polyurea adhesive.
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Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of adhesive production, particularly relates to a low odor polyurea adhesive preparation reaction kettle. BACKGROUND

[0002] In the prior art, the traditional reaction kettle has many problems when used for low odor polyurea adhesive preparation. The stirring paddle of the traditional reaction kettle is usually of fixed structure and the angle is not adjustable. In the preparation process of low odor polyurea adhesive, the viscosity of the material will change significantly as the reaction proceeds. In the early stage of the reaction, the material has low viscosity, and as the reaction proceeds, the viscosity of the material gradually increases. The stirring paddle with fixed angle cannot be adjusted according to the change of the viscosity of the material. When the viscosity of the material is low, the stirring range is limited, and it is difficult to fully mix the material, resulting in uneven reaction. When the viscosity of the material increases, the shear force generated by the stirring paddle with fixed angle is insufficient, and the material cannot be effectively dispersed, which may cause excessive or insufficient local reaction, thereby affecting the quality of the adhesive and possibly producing odor due to incomplete reaction. In view of the above problems, the present application provides a reaction kettle for preparing low odor polyurea adhesive. SUMMARY

[0003] The main purpose of the present application is to provide a reaction kettle for preparing low odor polyurea adhesive, which can effectively solve the problems in the background art.

[0004] To achieve the above-mentioned purpose, the technical scheme adopted by the present application is as follows:

[0005] A reaction kettle for preparing low odor polyurea adhesive, comprising a kettle body, a stirring mechanism and a transmission mechanism, the transmission mechanism being installed at the top end of the kettle body, the stirring mechanism being installed in the kettle body, the stirring mechanism and the transmission mechanism being connected, the stirring mechanism comprising a stirring shaft and eight stirring paddles;

[0006] The top end of the stirring shaft is rotatably installed at the top end of the kettle body, four shaft sleeves are fixedly installed on the periphery of the stirring shaft, and the first ends of the eight stirring paddles are rotatably installed on both sides of the four shaft sleeves, respectively. Two first connecting rods forming a parallelogram structure are arranged between the first ends of the upper and lower adjacent stirring paddles.

[0007] The top end of the stirring shaft is rotatably installed at the top end of the kettle body, four shaft sleeves are fixedly installed on the periphery of the stirring shaft, and the first ends of the eight stirring paddles are rotatably installed on both sides of the four shaft sleeves, respectively. Two first connecting rods forming a parallelogram structure are arranged between the first ends of the upper and lower adjacent stirring paddles.

[0008] Preferably, the upper end of the lifting sleeve slides through the top end of the kettle body, the lower end of the lifting sleeve is arranged in the kettle body, a bearing is fixedly installed on the periphery of the top end of the lifting sleeve, the linear actuator is composed of an electric push rod, the cylinder of the electric push rod is fixedly connected with the upper surface of the kettle body, the push rod of the electric push rod is fixedly connected with a clamping block, and the outer ring of the bearing is arranged in the clamping block.

[0009] Preferably, the upper and lower sides of the corners at the first end of the stirring paddle are fixedly connected with corner blocks, the two ends of the twelve first connecting rods are rotationally connected with the corner blocks arranged at the first ends of the eight stirring paddles, and the lower ends of the two second connecting rods are rotationally connected with the corner blocks arranged above the two stirring paddles at the top end.

[0010] Preferably, the upper end of the stirring shaft is fixedly installed with a first guide block, vertical holes are arranged on the two sides of the first guide block, the top ends of the two second connecting rods are respectively liftly installed in the vertical holes on the two sides of the first guide block, the top ends of the two second connecting rods are respectively hingedly connected with vertical rods, and the top ends of the vertical rods are fixedly connected with the lower end of the lifting sleeve.

[0011] Preferably, the two sides of the top end of the shaft sleeve are fixedly installed with two second guide blocks, arc-shaped guide holes are arranged in the second guide blocks, one side of the top end of the stirring paddle is rotationally installed with a rotating roller, and one end of the rotating roller is rollingly installed in the arc-shaped guide hole in the second guide block.

[0012] Preferably, the transmission mechanism is composed of a speed reducer motor, and a shaft coupling is fixedly connected between the output end of the rotor of the speed reducer motor and the top end of the stirring shaft.

[0013] Compared with the prior art, the utility model has the advantages of the following:

[0014] 1. Adapt to material viscosity change, improve stirring effect: through the electric push rod drive lifting sleeve, and then drive stirring paddle angle real-time adjustment; in the early stage of reaction, the material viscosity is low, the stirring paddle angle can be set to be large, the stirring range is increased, the material can be fully mixed, and the reaction is uniformly promoted; as the reaction proceeds, the material viscosity increases, the stirring paddle angle is reduced, the shear force of stirring is enhanced, the material is effectively dispersed, the material can be well stirred in the whole reaction process, and the preparation quality of the low odor polyurea adhesive is improved.

[0015] 2. Enhance the stability and linkage of the stirring paddle: the stirring paddles are connected through the first connecting rods to form a parallelogram structure, the linkage of the stirring paddles is realized; meanwhile, the guide structures such as the first guide block, the vertical hole, the second guide block and the arc-shaped guide hole are arranged, the stability and accuracy of the stirring paddles in the rotating process are ensured, the shaking and jamming phenomena are avoided, and the service life of the reaction kettle is prolonged.

[0016] 3. Reduce the generation of odor: due to the reaction kettle can be according to the reaction of the material to adjust the angle of the stirring paddle in real time, the material mixing is more uniform, the reaction is more sufficient, reduces the odor generation caused by incomplete reaction or local overheating, meets the preparation requirements of low odor polyurea adhesive. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is the overall structure schematic diagram of the utility model;

[0018] Figure 2 is the structure schematic diagram of the stirring mechanism in the utility model;

[0019] Figure 3 is the utility model Figure 2 A ring enlarged view;

[0020] Figure 4 is the utility model Figure 2 B ring enlarged view.

[0021] In the figure: 1, kettle body;2, stirring mechanism;201, stirring shaft;202, stirring paddle;203, first connecting rod;204, first guide block;205, lifting sleeve;206, linear actuator;207, shaft sleeve;208, angle block;209, vertical hole;210, vertical rod;211, second connecting rod;212, bearing;213, clamp block;214, second guide block;215, rotating roller;216, arc-shaped guide hole;3, transmission mechanism;4, shaft coupling. DETAILED DESCRIPTION

[0022] In order to make the technical means, creative characteristics, purposes and effects realized by the utility model easy to understand, the utility model is further described below in combination with specific embodiments.

[0023] As Figures 1-4 Indicated, a kind of low odor polyurea adhesive preparation reaction kettle, including kettle body 1, stirring mechanism 2 and transmission mechanism 3, transmission mechanism 3 is installed at the top of kettle body 1, stirring mechanism 2 is installed in kettle body 1 interior, and stirring mechanism 2 is connected with transmission mechanism 3, transmission mechanism 3 provides power for stirring mechanism 2, so that it can stir the material in kettle body 1.

[0024] Reference Figure 2As shown, the stirring mechanism 2 comprises a stirring shaft 201 and eight stirring paddles 202, the top end of the stirring shaft 201 is rotatably installed at the top end of the kettle body 1, so as to ensure that the stirring shaft 201 can rotate under the driving of the transmission mechanism 3, four shaft sleeves 207 are fixedly installed on the periphery of the stirring shaft 201, the first ends of the eight stirring paddles 202 are rotatably installed on the two sides of the four shaft sleeves 207, so that the stirring paddles 202 can rotate with the shaft sleeves 207 as the fulcrum, two first connecting rods 203 constituting a parallelogram structure are arranged between the first ends of the upper and lower adjacent two stirring paddles 202, and the design of the parallelogram structure enables the linkage between the stirring paddles 202.

[0025] Referring to Figure 2 and Figure 4 As shown, the top end of the stirring shaft 201 is telescopically installed with a lifting sleeve 205, the lower end and the top end of the lifting sleeve 205 are hingedly connected with one side of the two stirring paddles 202, the top end of the kettle body 1 is installed with two linear actuators 206 for driving the lifting sleeve 205 to lift and lower, and in the embodiment, the linear actuators 206 are constituted by electric push rods.

[0026] Referring to Figure 1 and Figure 4 As shown, the upper end of the lifting sleeve 205 slides through the top end of the kettle body 1, the lower end of the lifting sleeve 205 is arranged in the kettle body 1, the top end of the lifting sleeve 205 is fixedly installed with a bearing 212, the cylinder of the electric push rod is fixedly connected with the upper surface of the kettle body 1, the top end of the push rod of the electric push rod is fixedly connected with a clamping block 213, and the outer ring of the bearing 212 is arranged in the clamping groove of the clamping block 213, through the connection mode, when the push rod of the electric push rod is telescopically extended, the lifting sleeve 205 can be lifted and lowered along the stirring shaft 201.

[0027] It should be noted that, in order to realize the synchronous extension of the electric push rod, the two electric push rods are electrically connected through a programmable controller, and the programmable controller is used for accurately controlling the action of the electric push rod.

[0028] Referring to Figure 3 and Figure 4 As shown, the upper and lower sides of the corners at the first ends of the stirring paddles 202 are fixedly connected with corner blocks 208, the two ends of the twelve first connecting rods 203 are rotatably connected with the corner blocks 208 arranged at the first ends of the eight stirring paddles 202, so as to constitute a parallelogram linkage structure, and the lower ends of the two second connecting rods 211 are rotatably connected with the corner blocks 208 above the top two stirring paddles 202, so that the lifting and lowering action of the lifting sleeve 205 can be transmitted to the stirring paddles 202.

[0029] Referring to Figure 4As shown, the upper end of the stirring shaft 201 is fixedly provided with a first guide block 204, vertical holes 209 are arranged on the two sides of the first guide block 204, the top ends of two second connecting rods 211 are respectively liftly installed in the vertical holes 209 on the two sides of the first guide block 204, the top ends of the two second connecting rods 211 are hingedly provided with vertical rods 210, and the top ends of the vertical rods 210 are fixedly connected with the lower end of the lifting sleeve 205, so that the stability and accuracy of the second connecting rod 211 during lifting are ensured.

[0030] Referring to Figure 4 As shown, the two sides of the top end shaft sleeve 207 are fixedly provided with two second guide blocks 214, arc-shaped guide holes 216 are arranged in the second guide blocks 214, one side of the top end stirring paddle 202 is rotatably provided with a rotating roller 215, one end of the rotating roller 215 is rotatably installed in the arc-shaped guide hole 216 in the second guide block 214, and the arc-shaped guide hole 216 provides a guide action for the rotation of the top end stirring paddle 202, so that the rotation is more smooth and stable.

[0031] Referring to Figure 1 As shown, the transmission mechanism 3 is composed of a speed reducer motor, a shaft coupling 4 is fixedly connected between the output end of the rotor of the speed reducer motor and the top end of the stirring shaft 201, the speed reducer motor transmits power to the stirring shaft 201 through the shaft coupling 4, drives the stirring shaft 201 to rotate, and then drives the stirring paddle 202 to stir the materials in the kettle body 1.

[0032] When the push rod in the electric push rod is extended and retracted, the push rod moving up and down drives the lifting sleeve 205 to lift along the stirring shaft 201 through the bearing 212, the lifting action of the lifting sleeve 205 is realized through the two vertical rods 210 and the two second connecting rods 211, and the two top end stirring paddles 202 are pushed to change the inclination angle, since the adjacent stirring paddles 202 are connected through the first connecting rod 203 to form a parallelogram structure, the remaining six stirring paddles 202 will be inclined at the same time as the two top end stirring paddles 202.

[0033] It should be noted that, in the reaction process of the low-odor polyurea adhesive preparation reaction kettle, the stirring paddle 202 angle can be adjusted in real time according to the reaction stage and viscosity change of the material, in the initial stage of the reaction, the material viscosity is low, the stirring paddle 202 angle can be set to be large through the electric push rod control, so as to increase the stirring range, so that the materials can be fully mixed, as the reaction proceeds, the material viscosity increases, the stirring paddle 202 angle is reduced, the shear force of stirring is enhanced, and the uniform mixing of the materials is ensured, so as to improve the preparation quality and efficiency of the low-odor polyurea adhesive.

[0034] The basic principle and main features of the present application and the advantages of the present application are shown and described above. Those skilled in the art should understand that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A low odor polyurea adhesive preparation reactor, comprising a reactor body (1), a stirring mechanism (2) and a transmission mechanism (3), the transmission mechanism (3) is installed on the top end of the reactor body (1), the stirring mechanism (2) is installed in the reactor body (1), the stirring mechanism (2) and the transmission mechanism (3) are connected, characterized in that: The stirring mechanism (2) comprises a stirring shaft (201) and eight stirring paddles (202); The top end of the stirring shaft (201) is rotatably installed at the top end of the kettle body (1), four shaft sleeves (207) are fixedly installed on the periphery of the stirring shaft (201), and the first ends of the eight stirring paddles (202) are rotatably installed on both sides of the four shaft sleeves (207); first connecting rods (203) in a parallelogram structure are arranged between the first ends of the upper and lower adjacent two stirring paddles (202). The top end of the stirring shaft (201) is telescopically installed with a lifting sleeve (205), second connecting rods (211) are hingedly connected between the lower end of the lifting sleeve (205) and one side of the two stirring paddles (202) at the top end, and a linear actuator (206) is installed at the top end of the kettle body (1) to drive the lifting sleeve (205) to lift.

2. The low odor polyurea adhesive preparation reaction kettle according to claim 1, characterized in that: The upper end of the lifting sleeve (205) slides through the top end of the kettle body (1), the lower end of the lifting sleeve (205) is arranged in the kettle body (1), a bearing (212) is fixedly installed on the periphery of the top end of the lifting sleeve (205), the linear actuator (206) is composed of an electric push rod, the cylinder of the electric push rod is fixedly connected to the upper surface of the kettle body (1), the top end of the push rod of the electric push rod is fixedly connected with a clamping block (213), and the outer ring of the bearing (212) is arranged in the clamping groove of the clamping block (213).

3. The low odor polyurea adhesive preparation reaction kettle according to claim 1, characterized in that: The upper and lower sides of the corners at the first ends of the stirring paddles (202) are fixedly connected with corner blocks (208), the two ends of the twelve first connecting rods (203) are rotatably connected with the corner blocks (208) arranged at the first ends of the eight stirring paddles (202), and the lower ends of the two second connecting rods (211) are rotatably connected with the corner blocks (208) arranged above the two stirring paddles (202) at the top end.

4. The low odor polyurea adhesive preparation reaction kettle according to claim 1, characterized in that: The upper end of the stirring shaft (201) is fixedly installed with a first guide block (204), vertical holes (209) are arranged on the two sides of the first guide block (204), the top ends of the two second connecting rods (211) are telescopically installed in the vertical holes (209) on the two sides of the first guide block (204), the top ends of the two second connecting rods (211) are hingedly connected with vertical rods (210), and the top ends of the vertical rods (210) are fixedly connected with the lower end of the lifting sleeve (205).

5. The low odor polyurea adhesive preparation reaction kettle according to claim 1, characterized in that: Two second guide blocks (214) are fixedly installed on the two sides of the top end of the shaft sleeve (207), arc-shaped guide holes (216) are arranged in the second guide blocks (214), and a rotating roller (215) is rotatably installed on one side of the top end of the stirring paddle (202).

6. The low odor polyurea adhesive preparation reaction kettle according to claim 1, characterized in that: The transmission mechanism (3) is composed of a speed reducer motor, and a shaft coupling (4) is fixedly connected between the output end of the rotor of the speed reducer motor and the top end of the stirring shaft (201).