Catalyst feeding tank for polyurethane prepolymer production

Abstract

The utility model relates to the technical field of polyurethane prepolymer production, and discloses a catalyst feeding tank for polyurethane prepolymer production, which comprises a mixing mechanism, a feeding mechanism and a main body mechanism, the mixing mechanism is positioned inside the main body mechanism, the feeding mechanism is positioned at the bottom of the main body mechanism, the mixing mechanism comprises a motor, and the motor is connected with the feeding mechanism. The output end of the motor is fixedly connected with a first outer gear, the outer wall of the first outer gear is meshed with a second outer gear, and the middle of the second outer gear is fixedly connected with a stirring rod. The output end of the motor is fixedly connected with the first outer gear, the first outer gear can be driven by the motor to rotate, the second outer gear meshed with the outer wall can be driven to rotate when the first outer gear rotates, and the second outer gear is fixedly connected with the stirring rod. When the second outer gear rotates, the stirring rod can be driven to be in the feeding tank body.

Description

Technical Field

[0001] This utility model relates to the field of polyurethane prepolymer production technology, and in particular to a catalyst feeding tank for polyurethane prepolymer production. Background Technology

[0002] Polyurethane prepolymers are an important intermediate product in the synthesis of polyurethane materials. They are obtained by reacting polyisocyanates and polyols under certain conditions. Structurally, polyurethane prepolymers possess specific active groups, which provide reaction sites for subsequent reactions. Polyurethane prepolymers exhibit a variety of excellent properties; for example, they can exhibit varying degrees of flexibility, hardness, and abrasion resistance depending on the formulation design. In industrial applications, they are widely used in coatings, adhesives, elastomers, and foamed plastics. Their synthesis process is relatively controllable; by adjusting the type and ratio of raw materials and reaction conditions, polyurethane prepolymers that meet different application requirements can be obtained, thus laying the foundation for the performance customization of various polyurethane products.

[0003] Catalysts are usually added during the production of polyurethane prepolymers to accelerate the reaction. However, during the addition of catalysts, uneven mixing may cause agglomeration, which may affect the overall reaction efficiency. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a catalyst feeding tank for the production of polyurethane prepolymer.

[0005] This utility model is achieved by the following technical solution: a catalyst feeding tank for the production of polyurethane prepolymer, comprising a mixing mechanism, a feeding mechanism and a main body mechanism, wherein the mixing mechanism is located inside the main body mechanism and the feeding mechanism is located at the bottom of the main body mechanism;

[0006] The mixing mechanism includes a motor, an external gear one is fixedly connected to the output end of the motor, an external gear two meshes with the outer wall of the external gear one, and a stirring rod is fixedly connected to the middle of the external gear two.

[0007] Through the above technical solution, the output end of the motor is fixedly connected to an external gear one, which can drive the external gear one to rotate. When the external gear one rotates, it can drive the external gear two, which meshes with the outer wall, to rotate. The external gear two is fixedly connected to a stirring rod. When the external gear two rotates, it can drive the stirring rod to rotate and stir inside the main body of the feeding tank, thereby ensuring that the catalyst and polyurethane prepolymer are fully mixed and improving the reaction efficiency.

[0008] As a further improvement to the above scheme, the outer wall of the second external gear is meshed with an internal gear.

[0009] Through the above technical solution, the external gear two meshes with the internal gear. Since the internal gear is fixedly connected to the top cover, the internal gear will not rotate when the external gear two rotates. This allows the external gear two and the stirring rod to revolve along the inner wall of the internal gear while rotating, thereby increasing the stirring range of the stirring rod and further enhancing the mixing effect of the catalyst.

[0010] As a further improvement to the above solution, a connecting bracket is rotatably connected to the top of the second external gear.

[0011] Through the above technical solution, the external gear 2 is rotatably connected to the connecting bracket, which can fix the external gear 2 without affecting its rotation, thereby increasing the stability of the stirring rod during rotation, reducing vibration and wear, and extending the service life of the equipment.

[0012] As a further improvement to the above solution, the feeding mechanism includes a storage hopper, the outer wall of which is fixedly connected to a guide trough, and the bottom of which is fixedly connected to a mounting bracket.

[0013] Through the above technical solution, the storage hopper is fixedly connected to the guide trough. By setting the guide trough on the outer wall of the storage hopper, the catalyst can be guided into the storage hopper for temporary storage and accumulation. Finally, it is fed into the main body of the feeding tank by the feeding pipe and the spiral feeding blade to complete the reaction. The guide trough is fixedly connected to the mounting bracket. By setting the mounting bracket at the bottom of the guide trough, the guide trough can be fixed by the mounting bracket to prevent it from shaking and collapsing during operation, thereby increasing the stability of the overall equipment.

[0014] As a further improvement to the above solution, a feeding pipe is fixedly connected inside the storage hopper, and a spiral feeding blade is rotatably connected to the inner wall of the feeding pipe.

[0015] Through the above technical solution, the storage hopper is fixedly connected to the feeding pipe, and the feeding pipe is rotatably connected to the spiral feeding blade. The top of the spiral feeding blade is fixedly connected to the external gear. When the motor drives the external gear to rotate, the spiral feeding blade will also rotate to transport the catalyst inside the storage hopper. Since the spiral feeding blade and the external gear will rotate synchronously, when the catalyst is transported into the main body of the feeding tank, the stirring rod will also operate synchronously, so that the catalyst can be fully mixed inside the main body of the feeding tank.

[0016] As a further improvement to the above solution, the main structure includes a feeding tank body, and a top cover is fixedly connected to the upper surface of the feeding tank body.

[0017] Through the above technical solution, the top cover is fixedly connected to the main body of the feeding tank. By setting the top cover on the top of the main body of the feeding tank, the main body of the feeding tank can be sealed by the top cover, avoiding leakage during the reaction process and increasing the safety of the reaction process.

[0018] As a further improvement to the above solution, a main support is fixedly connected to the outer wall of the main body of the feeding tank, and a base plate is fixedly connected to the bottom of the main support.

[0019] Through the above technical solution, the main body of the feeding tank is fixedly connected to the main support, and the main support is fixedly connected to the base plate. Thus, the main body of the feeding tank can be fixed to the upper surface of the base plate through the main support, thereby increasing the stability of the overall equipment.

[0020] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0021] This invention features a motor with an external gear 1 fixedly connected to its output end. The motor drives the external gear 1 to rotate, which in turn drives an external gear 2 meshing with the outer wall to rotate. The external gear 2 is fixedly connected to a stirring rod, which also rotates when it rotates. The external gear 2 meshes with an internal gear. Since the internal gear is fixedly connected to the top cover, the internal gear does not rotate when the external gear 2 rotates. This allows the external gear 2 and the stirring rod to revolve along the inner wall of the internal gear while rotating, thereby increasing the stirring range of the stirring rod, ensuring thorough mixing of the catalyst and polyurethane prepolymer, and improving reaction efficiency. The external gear 2 is rotatably connected to a connecting bracket, which enhances the stability of the stirring rod without affecting its rotation.

[0022] This invention features a storage hopper fixedly connected to a guide trough, allowing the catalyst to be guided into the hopper for temporary storage and accumulation. A mounting bracket is fixedly connected to the guide trough at its bottom, preventing shaking and collapse during operation. A feeding pipe is fixedly connected to the storage hopper, and a spiral feeding blade is rotatably connected to it. An external gear is fixedly connected to the top of the spiral feeding blade. When the motor drives the external gear to rotate, the spiral feeding blade rotates synchronously, delivering the catalyst into the feeding tank. Simultaneously, the stirring rod also rotates, ensuring thorough mixing of the catalyst within the feeding tank. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0024] Figure 2 This is a side view of the overall structure of this utility model;

[0025] Figure 3 This is a schematic diagram of the internal structure of the overall structure of this utility model;

[0026] Figure 4 This is a schematic diagram of the hybrid mechanism of this utility model;

[0027] Figure 5 This is a schematic diagram of the feeding mechanism of this utility model.

[0028] Explanation of key symbols:

[0029] 1. Mixing mechanism; 101. Motor; 102. External gear one; 103. External gear two; 104. Stirring rod; 105. Internal gear; 106. Connecting bracket; 2. Feeding mechanism; 201. Storage hopper; 202. Guide chute; 203. Mounting bracket; 204. Feeding pipe; 205. Spiral feeder blade; 3. Main body mechanism; 301. Feeding tank body; 302. Top cover; 303. Main body support; 304. Base plate. Detailed Implementation

[0030] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0031] Example:

[0032] Please combine Figures 1-5 The catalyst feeding tank for polyurethane prepolymer production in this embodiment includes a mixing mechanism 1, a feeding mechanism 2, and a main body mechanism 3. The mixing mechanism 1 is located inside the main body mechanism 3, and the feeding mechanism 2 is located at the bottom of the main body mechanism 3.

[0033] The mixing mechanism 1 includes a motor 101, an external gear 102 is fixedly connected to the output end of the motor 101, an external gear 103 meshes with the outer wall of the external gear 102, and a stirring rod 104 is fixedly connected to the middle of the external gear 103.

[0034] The outer wall of the external gear 103 meshes with the internal gear 105.

[0035] The top of the external gear 2 103 is rotatably connected to the connecting bracket 106.

[0036] The feeding mechanism 2 includes a storage hopper 201, a guide trough 202 is fixedly connected to the outer wall of the storage hopper 201, and an installation bracket 203 is fixedly connected to the bottom of the guide trough 202.

[0037] The storage hopper 201 is fixedly connected to the feed pipe 204, and the inner wall of the feed pipe 204 is rotatably connected to the spiral feed blade 205.

[0038] The main structure 3 includes a feeding tank body 301, and a top cover 302 is fixedly connected to the upper surface of the feeding tank body 301.

[0039] The outer wall of the main body 301 of the feeding tank is fixedly connected to the main support 303, and the bottom plate 304 is fixedly connected to the bottom of the main support 303.

[0040] The implementation principle of a catalyst feeding tank for polyurethane prepolymer production in this embodiment is as follows: An external gear 102 is fixedly connected to the output end of a motor 101, allowing the motor 101 to drive the external gear 102 to rotate. When the external gear 102 rotates, it drives an external gear 103 meshing with the outer wall to rotate. An external gear 103 is fixedly connected to a stirring rod 104, allowing the stirring rod 104 to rotate as well. The external gear 103 meshes with an internal gear 105. Since the internal gear 105 is fixedly connected to a top cover 302, the internal gear 105 does not rotate when the external gear 103 rotates. This allows the external gear 103 and the stirring rod 104 to revolve along the inner wall of the internal gear 105 while rotating, thereby increasing the stirring range of the stirring rod 104, ensuring thorough mixing of the catalyst and polyurethane prepolymer, and improving reaction efficiency. The external gear 103 is rotatably connected to a connecting bracket 106. The stability of the stirring rod 104 can be enhanced without affecting its rotation by connecting bracket 106. By setting a storage hopper 201 and fixing it to the guide trough 202, the catalyst can be guided into the storage hopper 201 for temporary storage and accumulation. A mounting bracket 203 is fixedly connected to the guide trough 202. By setting the mounting bracket 203 at the bottom of the guide trough 202, the guide trough 202 can be fixed by the mounting bracket 203 to prevent it from shaking and collapsing during operation. A feeding pipe 204 is fixedly connected to the storage hopper 201. The feeding pipe 204 is rotatably connected to the spiral feeding blade 205. An external gear 102 is fixedly connected to the top of the spiral feeding blade 205. When the motor 101 drives the external gear 102 to rotate, the spiral feeding blade 205 rotates synchronously to deliver the catalyst into the feeding tank body 301, and the stirring rod 104 also rotates synchronously, so that the catalyst can be fully mixed inside the feeding tank body 301.

[0041] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A catalyst feeding tank for the production of polyurethane prepolymer, characterized in that: It includes a mixing mechanism (1), a feeding mechanism (2), and a main body mechanism (3), wherein the mixing mechanism (1) is located inside the main body mechanism (3), and the feeding mechanism (2) is located at the bottom of the main body mechanism (3); The mixing mechanism (1) includes a motor (101), the output end of which is fixedly connected to an external gear one (102), the outer wall of which is meshed with an external gear two (103), and the middle part of the external gear two (103) is fixedly connected to a stirring rod (104).

2. The catalyst feeding tank for polyurethane prepolymer production as described in claim 1, characterized in that: The outer wall of the second external gear (103) is meshed with an internal gear (105).

3. The catalyst feeding tank for polyurethane prepolymer production as described in claim 1, characterized in that: The top of the external gear 2 (103) is rotatably connected to a connecting bracket (106).

4. The catalyst feeding tank for polyurethane prepolymer production as described in claim 1, characterized in that: The feeding mechanism (2) includes a storage hopper (201), and a guide groove (202) is fixedly connected to the outer wall of the storage hopper (201). A mounting bracket (203) is fixedly connected to the bottom of the guide groove (202).

5. The catalyst feeding tank for polyurethane prepolymer production as described in claim 4, characterized in that: The storage hopper (201) is fixedly connected to the inside of a feeding pipe (204), and the inner wall of the feeding pipe (204) is rotatably connected to a spiral feeding blade (205).

6. The catalyst feeding tank for polyurethane prepolymer production as described in claim 1, characterized in that: The main body (3) includes a feeding tank body (301), and a top cover (302) is fixedly connected to the upper surface of the feeding tank body (301).

7. The catalyst feeding tank for polyurethane prepolymer production as described in claim 6, characterized in that: The outer wall of the main body (301) of the feeding tank is fixedly connected to a main support (303), and the bottom of the main support (303) is fixedly connected to a base plate (304).

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