A stirring device for polyurethane pouring sealant

Abstract

The utility model relates to polyurethane potting adhesive production technical field discloses a kind of stirring device for polyurethane potting adhesive, comprising: support frame;Stirring tank, rotationally connected in the inside of support frame;Several vertical arrangement's rotating shafts, are set in the inside of stirring tank;Several groups of stirring plate, respectively fixedly connected in the side wall of each rotating shaft;Driving part, for driving rotating shaft and the rotation of stirring plate, the driving part is set in the top of stirring tank.This scheme adopts carousel to drive multiple rotating shafts revolution, and simultaneously rotates each rotating shaft by gear transmission, forms composite stirring mode, enhances the convection and diffusion between materials, greatly improves mixing efficiency, ensures to complete uniform mixing within service life, simultaneously introduces intermittent overturning stirring tank structure, strengthens vertical direction mixing capacity, realizes that potting adhesive is efficiently, quickly, fully and uniformly mixed, guarantees the quality of potting adhesive.

Description

Technical Field

[0001] This utility model relates to the field of polyurethane potting compound production technology, and in particular to a stirring device for polyurethane potting compound. Background Technology

[0002] Polyurethane potting compound is a two- or multi-component thermosetting polymer material composed of polyurethane prepolymer. It typically includes a base material and a curing agent. Before use, these two parts need to be mixed evenly in a specific ratio. Once mixed, the polyurethane potting compound undergoes a chemical reaction and gradually cures to form a solid material with excellent properties.

[0003] Polyurethane potting compounds typically use polyols as the base material and polyisocyanates as the curing agent. Due to their different chemical structures, they often exhibit significant differences in physical properties, especially viscosity. The base material usually has high viscosity and poor flowability, while the curing agent, although having relatively low viscosity, has high reactivity. This mismatch in physical properties makes it difficult for the two to mix quickly and uniformly in conventional mixing devices. Once mixed, they rapidly begin a chemical reaction and gradually solidify. Currently common mixing devices have relatively simple structures, mainly consisting of a rotating shaft and several fixed stirring blades, lacking efficient mixing capabilities for high-viscosity materials. The design of this traditional structure has many limitations in practical applications. For example, the stirring force is insufficient, making it difficult to effectively disperse high-viscosity components quickly and evenly. Secondly, the stirring method is singular, which cannot form a good circulation flow, resulting in insufficient local mixing. In addition, the stirring efficiency is low, making it difficult to complete the full mixing within the limited applicable period. This can easily lead to defects such as uneven reaction between the base material and the curing agent, incomplete curing, and unstable material properties. In severe cases, it can even lead to the scrapping of the entire batch of materials, affecting product quality and production efficiency. Therefore, the existing stirring device is difficult to meet the process requirements of polyurethane potting compound for rapid, efficient, and uniform mixing. Utility Model Content

[0004] The purpose of this invention is to solve the problem that existing mixing devices cannot meet the process requirements of rapid, efficient and uniform mixing of polyurethane potting compound, and to propose a mixing device for polyurethane potting compound.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A mixing device for polyurethane potting compound includes: a support frame; a mixing tank rotatably connected inside the support frame; a plurality of vertically arranged rotating shafts disposed inside the mixing tank; a plurality of sets of mixing plates respectively fixedly connected to the side wall of each rotating shaft; and a driving component for driving the rotation of the rotating shafts and mixing plates, the driving component being disposed at the top of the mixing tank.

[0007] As a preferred embodiment of this utility model, the driving component includes: a motor, fixedly mounted on the top of the mixing tank; a sleeve, disposed on the top of the mixing tank, the bottom end of the sleeve extending into the interior of the mixing tank, and the sleeve being rotatably connected to the mixing tank; two meshing gears, respectively fixedly mounted on the output shaft of the motor and the sleeve; and a turntable, disposed inside the mixing tank, the interior of the turntable being hollow, the turntable being axially connected to the bottom end of the sleeve, and the top ends of all the rotating shafts extending into the interior of the turntable, and the top ends of the rotating shafts being rotatably connected to the inner top surface of the turntable.

[0008] As a preferred embodiment of this utility model, the mixing tank is provided with a reinforcing member, which includes: a gear two, coaxially disposed inside the turntable; a connecting rod, fixed to the center position of the gear two, the top end of the connecting rod passing through the inside of the sleeve; a mounting bracket, fixedly installed on the top of the mixing tank, the top end of the connecting rod being fixed to the inner top surface of the mounting bracket; and several gear threes, all disposed inside the turntable and respectively fixedly sleeved on each rotating shaft, all of which mesh with the gear two.

[0009] As a preferred embodiment of this utility model, the support frame is provided with a second reinforcing member, which includes: a second motor, fixedly installed on the side wall of the support frame; an incomplete gear, fixedly sleeved on the output shaft of the second motor; a transmission shaft, fixedly connected to the side wall of the mixing tank, the free end of the transmission shaft extending to the side wall of the support frame, and the transmission shaft rotatably connected to the support frame; and a fourth gear, fixedly sleeved on the transmission shaft, which cooperates with the incomplete gear to realize the intermittent tumbling of the mixing tank.

[0010] As a preferred technical solution of this utility model, the mixing plate is provided with a number of air holes for the flow of potting compound.

[0011] As a preferred embodiment of this utility model, all the rotating shafts and all the stirring plates located on the rotating shafts are arranged equidistantly in a circumferential direction.

[0012] This utility model has the following beneficial effects:

[0013] 1. Multiple stirring motion modes improve mixing efficiency and uniformity: Existing stirring devices mostly adopt a single rotating stirring paddle structure, which can only achieve local shearing and limited material circulation, making it difficult to cope with the problems of large viscosity differences and fast reaction speed of potting compound components. This solution uses a dual stirring mechanism to achieve the revolution of multiple rotating shafts driven by a turntable and the rotation of each rotating shaft by gear transmission. This makes the stirring plate not only rotate around the center, but also rotate on its own, forming a more complex flow path, which greatly enhances the convection and diffusion effect between materials. This composite stirring mode can significantly improve mixing efficiency, ensure that different components of potting compound are fully integrated in a short time, and avoid curing defects caused by uneven mixing.

[0014] 2. Intermittent Tilting Mixing Tank Structure Enhances Vertical Mixing Capacity: Existing mixing devices are usually limited to horizontal mixing, lacking effective vertical disturbance of materials, making it difficult to completely break up the stratification phenomenon caused by density differences. This solution introduces an intermittent tilting mechanism driven by motor two, using the cooperation of an incomplete gear and gear four to enable the mixing tank to tilt intermittently, thereby applying periodic disturbance to the materials in the vertical direction. This dynamic tilting method can significantly improve the problem of material settling or stratification caused by gravity, and is especially suitable for handling polyurethane potting compound systems with high viscosity and poor flowability, further ensuring the uniformity of mixing. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a stirring device for polyurethane potting compound proposed in this utility model;

[0016] Figure 2 This is a schematic diagram of the internal structure of the mixing tank;

[0017] Figure 3 for Figure 2 Enlarged view of the structure at point A.

[0018] In the diagram: 1. Support frame, 2. Mixing tank, 3. Rotating shaft, 4. Mixing plate, 5. Motor 1, 6. Sleeve, 7. Gear 1, 8. Turntable, 9. Mounting bracket, 10. Connecting rod, 11. Gear 2, 12. Gear 3, 13. Drive shaft, 14. Gear 4, 15. Incomplete gear, 16. Motor 2. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0020] Reference Figure 1-3 A mixing device for polyurethane potting compound includes: a support frame 1 and a mixing tank 2. The support frame 1 has a U-shaped structure, and the bottom of the mixing tank 2 has a funnel-shaped structure. The mixing tank 2 is located inside the support frame 1. The mixing tank 2 has a number of vertically arranged rotating shafts 3 inside, and all the rotating shafts 3 are equidistantly distributed in a circumferential direction. A number of circumferentially arranged mixing plates 4 are fixed on the side wall of the rotating shafts 3. A number of openings are provided on the mixing plates 4 to ensure the fluidity of the potting compound.

[0021] Furthermore, the mixing tank 2 is also equipped with a driving component for driving the rotation of the rotating shaft 3 and the mixing plate 4 to mix the potting compound. The driving component includes a motor 5 fixedly installed on the top of the mixing tank 2. The mixing tank 2 is also equipped with a sleeve 6, the bottom end of which extends into the interior of the mixing tank 2 and is rotatably connected to the mixing tank 2 in a sealed manner. Gears 7 are fixedly fitted on the output shaft of the motor 5 and the sleeve 6, and the two gears 7 mesh with each other. A turntable 8 is axially fixed to the bottom end of the sleeve 6. The interior of the turntable 8 is a hollow device. The top end of the rotating shaft 3 extends into the interior of the turntable 8. Under the action of this component, all the mixing plates 4 can rotate together with the turntable 8.

[0022] Furthermore, the mixing tank 2 is equipped with a reinforcing component 1, which is used to improve the mixing efficiency and quality of the potting compound. The reinforcing component 1 includes a gear 2 11 set inside the turntable 8. The gear 2 11, the sleeve 6, and the turntable 8 are coaxial. A connecting rod 10 is fixed at the center of the gear 2 11. The top of the connecting rod 10 passes through the inside of the sleeve 6. A mounting bracket 9 is fixedly installed on the top of the mixing tank 2. The top of the connecting rod 10 is fixed to the inner top surface of the mounting bracket 9. The sleeve 6 does not contact the connecting rod 10. At the same time, the gear 2 11 does not contact the inner side of the turntable 8. The top of the rotating shaft 3 is rotatably connected to the inner top surface of the turntable 8. The side wall of the rotating shaft 3 is rotatably connected to the bottom of the turntable 8. A gear 3 12 is fixedly sleeved on the rotating shaft 3. All gears 3 12 mesh with gear 2 11. Under the action of the reinforcing component 1, the rotating shaft 3 rotates with the turntable 8 and also rotates under the transmission action of gear 2 11 and gear 3 12, so as to achieve efficient, full, and uniform mixing of the potting compound.

[0023] Furthermore, the support frame 1 is provided with a second reinforcing member. This structure is used to further improve the mixing quality of the potting compound. Specifically, the mixing tank 2 is rotatably connected to the inner side of the support frame 1. A second motor 16 is fixed to the side wall of the support frame 1. An incomplete gear 15 is fixedly sleeved at the end of the output shaft of the second motor 16. A transmission shaft 13 is fixed to the side wall of the mixing tank 2. The mixing tank 2 rotates around the transmission shaft 13 as the central axis. The free end of the transmission shaft 13 extends to the side wall of the support frame 1, and the transmission shaft 13 is rotatably connected to the support frame 1. A fourth gear 14 is fixedly sleeved on the transmission shaft 13. The fourth gear 14 and the incomplete gear 15 cooperate to realize the intermittent tumbling of the mixing tank 2, thereby mixing the potting compound in the vertical direction. The incomplete gear 15 has a half-circle structure, that is, the incomplete gear 15 can drive the mixing tank 2 to rotate 180 degrees each time.

[0024] The specific working principle of this utility model is as follows:

[0025] During mixing, motors 5 and 16 are started. Driven by gear 7, motor 5 drives sleeve 6 and turntable 8 to rotate, causing shaft 3 and mixing plate 4 to rotate around the central axis of sleeve 6. Mixing plate 4 mixes the potting compound. Simultaneously, the rotation of shaft 3 drives gear 12 to rotate. Driven by gear 11, shaft 3 also rotates around its own central axis. That is, shaft 3 rotates along with turntable 8 and also rotates on its own axis, which improves the mixing plate 4's... The efficient mixing of the potting compound ensures the mixing quality. In addition, motor 2 16 can drive the incomplete gear 15 to rotate. When the incomplete gear 15 meshes with gear 4 14, it will drive the transmission shaft 13 and the mixing tank 2 to rotate 180 degrees. Conversely, when the incomplete gear 15 and gear 4 14 are not in contact, the mixing tank 2 is in a stationary state, and the potting compound will flow downward. By repeating this step, the potting compound can flow intermittently in the vertical direction. Combined with the stirring of the mixing plate 4, this further ensures the mixing effect of the potting compound.

[0026] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A mixing device for polyurethane potting compound, characterized in that, include: Support frame (1); The mixing tank (2) is rotatably connected inside the support frame (1); Several vertically arranged rotating shafts (3) are set inside the mixing tank (2); Several sets of stirring plates (4) are fixedly connected to the side wall of each rotating shaft (3); A drive unit for driving the rotation of the shaft (3) and the stirring plate (4) is provided on the top of the mixing tank (2).

2. The mixing device for polyurethane potting compound according to claim 1, characterized in that, The driving component includes: Motor 1 (5) is fixedly installed on the top of the mixing tank (2); A sleeve (6) is provided on the top of the mixing tank (2), the bottom end of the sleeve (6) extends into the interior of the mixing tank (2), and the sleeve (6) is rotatably connected to the mixing tank (2); Two meshing gears (7) are fixedly sleeved on the output shaft of motor (5) and sleeve (6), respectively; A turntable (8) is set inside the mixing tank (2). The interior of the turntable (8) is hollow. The turntable (8) is axially connected to the bottom end of the sleeve (6). The top ends of all the rotating shafts (3) extend into the interior of the turntable (8), and the top ends of the rotating shafts (3) are rotatably connected to the inner top surface of the turntable (8).

3. The mixing device for polyurethane potting compound according to claim 2, characterized in that, The mixing tank (2) is provided with a reinforcing member, which includes: Gear 2 (11) is coaxially arranged inside the turntable (8); The connecting rod (10) is fixed at the center position of the gear two (11), and the top end of the connecting rod (10) passes through the inside of the sleeve (6); The mounting bracket (9) is fixedly installed on the top of the mixing tank (2), and the top end of the connecting rod (10) is fixed to the inner top surface of the mounting bracket (9); Several gears (12) are set inside the turntable (8) and are fixedly sleeved on each rotating shaft (3). All of the gears (12) mesh with gears (11).

4. The mixing device for polyurethane potting compound according to claim 1, characterized in that, The support frame (1) is provided with a second reinforcing member, which includes: Motor 2 (16) is fixedly installed on the side wall of the support frame (1); An incomplete gear (15) is fixedly mounted on the output shaft of motor two (16); A drive shaft (13) is fixedly connected to the side wall of the mixing tank (2). The free end of the drive shaft (13) extends to the side wall of the support frame (1), and the drive shaft (13) is rotatably connected to the support frame (1). Gear 4 (14) is fixedly mounted on the transmission shaft (13) and cooperates with the incomplete gear (15) to realize the intermittent rotation of the mixing tank (2).

5. The mixing device for polyurethane potting compound according to claim 4, characterized in that, The mixing plate (4) has several air holes for the flow of potting compound.

6. The mixing device for polyurethane potting compound according to claim 5, characterized in that, All of the rotating shafts (3) and all the stirring plates (4) located on the rotating shafts (3) are arranged equidistantly in a circumferential direction.

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