High-speed dispersing and grinding equipment for polyurethane insulating paint raw materials

Abstract

The invention relates to the technical field of paint grinding, in particular to polyurethane insulating paint raw material high-speed dispersing and grinding equipment which comprises a shell, a rotating shaft, a motor, a grinding roller and a stirring paddle, a mixing cavity, a grinding cavity and an overflow channel are coaxially arranged in the shell, a grinding opening is formed between the mixing cavity and the grinding cavity, and a feeding opening and a discharging opening are formed in the upper end and the lower end of the shell respectively; the motor drives the rotating shaft to rotate, the stirring paddle fully stirs raw materials entering the mixing cavity, so that the polyurethane insulating paint raw materials with different components are preliminarily and uniformly mixed, the raw materials enter the grinding cavity from the mixing cavity through the grinding opening and are ground under the action of the grinding roller, and in the grinding process, the raw materials at the lower end of the grinding cavity are pushed by the stirring paddle, so that the raw materials are uniformly ground. The raw materials flow back into the mixing cavity through the overflow channel, so that the problem that the dispersion effect is not ideal due to the fact that particle agglomeration cannot be completely solved is avoided, and the grinding effect of the high-speed dispersion grinding equipment for the polyurethane insulating paint raw materials is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of paint grinding, in particular to high-speed dispersing and grinding equipment for polyurethane insulating paint raw materials. Background Art

[0002] The purpose of the high-speed dispersion and grinding equipment for polyurethane insulating paint raw materials is to fully mix and grind the raw materials such as resin, curing agent, filler, pigment, solvent, etc. to the required fineness and disperse them evenly to obtain insulating paint products with excellent performance. In the existing preparation process, the grinding and dispersion steps are mostly carried out separately, which is time-consuming and labor-intensive, and has the problem of low yield.

[0003] In view of the above problems, the prior art has proposed some solutions. For example, the invention patent with patent application number CN202021834034.8 discloses a grinding and dispersing device. In this solution, paint raw materials are added into the feed pipe, and the servo motor drives the No. 1 grinding wheel to rotate, and the No. 1 grinding wheel drives the crushing paddle to rotate, and the raw materials are preliminarily crushed, and the crushed raw materials are screened out through the sieve plate; the No. 2 grinding wheel is driven by the transmission belt to rotate, and the No. 2 grinding wheel drives the driven mechanism, and the driven mechanism drives the grinder to rotate and grind inside the grinding cylinder, and the ground raw materials fall to the bottom end of the grinding box through the sieve hole; the grinding is more complete through the setting of the liner, the No. 1 grinding wheel, the No. 2 grinding wheel and the No. 3 grinding wheel; for example, the invention patent with patent application number CN2023 The invention patent No. 11272752.9 discloses an environmentally friendly paint dispersing and grinding device. This scheme, by setting a self-adjusting grinding mechanism and utilizing the mutual cooperation between the grinding hood and the rotating ball, can quickly grind the dispersed paint to make the particle size of the particles inside the paint smaller. Moreover, the grinding hood and the rotating ball are provided in multiple groups and operate independently. When one group has a problem and needs to be repaired, the other groups can still continue to grind without stopping and waiting. However, the above scheme mainly relies on the grinding mechanism to grind to achieve dispersion, and lacks an effective pre-dispersion step before grinding. For some complex paint raw material systems, simple grinding may not be able to completely solve the agglomeration of particles, resulting in unsatisfactory dispersion effect. Summary of the invention

[0004] The purpose of the present invention is to provide a high-speed dispersion and grinding device for polyurethane insulating paint raw materials to solve the problem that the prior art lacks an effective pre-dispersion step before grinding. For some complex paint raw material systems, simple grinding may not be able to completely solve the problem of particle agglomeration, resulting in unsatisfactory dispersion effect.

[0005] To achieve the above object, the present invention provides the following technical solutions: A high-speed dispersion and grinding device for polyurethane insulation paint raw materials, comprising a housing, a rotating shaft, a motor, a grinding roller and a stirring paddle. The rotating shaft is coaxially and rotatably connected inside the housing, and the lower end of the rotating shaft extends outside the housing. The motor is installed on the lower end face of the housing and connected to the rotating shaft. A mixing chamber, a grinding chamber and an overflow channel are coaxially arranged inside the housing. The mixing chamber is located above the grinding chamber. A grinding opening is provided between the mixing chamber and the grinding chamber. The upper and lower ends of the overflow channel are respectively communicated with the upper end of the mixing chamber and the lower end of the grinding chamber. Feed openings and discharge openings are respectively provided at the upper and lower ends of the housing. The feed opening is communicated with the upper end of the mixing chamber, and the discharge opening is communicated with the lower end of the overflow channel. The grinding roller is rotatably connected inside the grinding chamber. The grinding roller is coaxially connected to the rotating shaft. The rotating shaft extends into the mixing chamber. The stirring paddle is installed on the upper end face of the rotating shaft. The motor drives the rotating shaft to rotate. The stirring paddle can fully stir the raw materials entering the mixing chamber, preliminarily mixing the polyurethane insulation paint raw materials with different components evenly. The raw materials enter the grinding chamber from the mixing chamber through the grinding opening and are ground under the action of the grinding roller. During the grinding process, the raw materials at the lower end of the grinding chamber are pushed by the stirring paddle and flow back into the mixing chamber through the overflow channel, avoiding the problem that there is no effective pre-dispersion step before grinding in the prior art. For some complex paint raw material systems, simple grinding may not be able to completely solve the problem of particle agglomeration, resulting in unsatisfactory dispersion effect, ensuring the grinding effect of the high-speed dispersion and grinding device for polyurethane insulation paint raw materials, and further ensuring the consistency of the grinding quality of polyurethane insulation paint raw materials.

[0006] Preferably, inner lining plates and outer lining plates are respectively provided on the inner side wall of the grinding chamber and the outer side wall of the grinding roller. Both the inner lining plate and the outer lining plate are frustum-shaped. The cone angle of the inner lining plate is larger than that of the outer lining plate, and the diameter of the lower bottom surface of the inner lining plate is larger than that of the outer lining plate. In this device, the inner lining plate and the outer lining plate are frustum-shaped and the diameter of the lower bottom surface of the inner lining plate is larger than that of the lower bottom surface of the outer lining plate, making the grinding space gradually smaller from the upper part to the lower part. This structure ensures that all raw materials can fully pass through different degrees of grinding areas, avoiding the problem of performance differences in insulation paint caused by uneven grinding. This spatial change from large to small enables the material to flow orderly, avoiding the problem of material blockage in the grinding chamber. At the same time, the special design of the inner lining plate and the outer lining plate makes the wear of the raw materials on the inner wall of the grinding chamber and the grinding roller more uniform during the grinding process. If the grinding space is unreasonable, it may lead to overly serious wear in some parts, affecting the service life and stability of the equipment. And this gradually decreasing grinding space can make the raw materials act more evenly on the inner lining plate and the outer lining plate during the grinding process, reducing the situation of local excessive wear, ensuring the service life of the lining plate, reducing the maintenance cost of the equipment, improving the grinding efficiency of the high-speed dispersion and grinding device for polyurethane insulation paint raw materials, and ensuring the stability of product quality.

[0007] Preferably, a plurality of grinding teeth are provided on both the inner lining plate and the outer lining plate. The plurality of grinding teeth are all arc-shaped. The plurality of grinding teeth installed on the inner lining plate are all left-handed, and the plurality of grinding teeth installed on the outer lining plate are all right-handed. In a common grinding tooth design, local accumulation of materials may occur during the grinding process, resulting in uneven grinding. In this equipment, the left-handed grinding teeth on the inner lining plate cooperate with the right-handed grinding teeth on the outer lining plate. When the grinding roller rotates, the grinding teeth with different helix directions will generate opposite forces on the materials, causing the materials to form a complex flow trajectory in the grinding chamber, preventing the materials from concentrating and accumulating in a certain place, and ensuring that the materials can be evenly distributed throughout the grinding area. At the same time, the combination of left-handed and right-handed grinding teeth makes the materials continuously change their movement directions during the grinding process, increasing the contact opportunities between the materials and the grinding teeth and the grinding path, reducing the situations of over-grinding or under-grinding of the materials, improving the grinding efficiency of the high-speed dispersion and grinding equipment for polyurethane insulating paint raw materials, and enhancing the grinding quality of the equipment.

[0008] Preferably, the plurality of grinding teeth on the inner lining plate and the outer lining plate are further divided into a rough grinding section and a fine grinding section. The rough grinding section is located above the fine grinding section. The module of the plurality of grinding teeth in the rough grinding section is larger than that of the plurality of grinding teeth in the fine grinding section. If the rough grinding section and the fine grinding section are not distinguished and grinding teeth of a unified specification are used, when processing raw materials with larger particles, the small-module grinding teeth may bear excessive pressure, resulting in premature wear or even damage. When performing fine grinding, the large-module grinding teeth cannot provide a sufficiently fine grinding effect. By setting the rough grinding section and the fine grinding section and making the module of the grinding teeth in the rough grinding section larger, the grinding teeth can be reasonably stressed according to different grinding stages, avoiding excessive wear of the grinding teeth and extending the service life of the grinding teeth. At the same time, dividing the grinding teeth into a rough grinding section and a fine grinding section enables raw materials with different particle sizes to be ground in appropriate grinding tooth areas, avoiding the problem of low grinding efficiency, improving the grinding efficiency of the high-speed dispersion and grinding equipment for polyurethane insulating paint raw materials, and enhancing the grinding quality of the equipment.

[0009] Preferably, the grinding roller is slidably connected to the rotating shaft. An adjusting spring is sleeved on the rotating shaft, and the upper and lower ends of the adjusting spring are respectively connected to the lower end surface of the grinding roller and the housing. During the grinding process, if the grinding roller is fixedly connected to the rotating shaft, when encountering particles with higher hardness or uneven material distribution, the grinding roller may be subjected to a large impact force. Such a rigid impact is likely to cause damage to the grinding roller, the rotating shaft, and other related components. However, the sliding connection between the grinding roller and the rotating shaft and the buffering by the adjusting spring can effectively absorb the impact force and avoid damage to the equipment caused by rigid collision, thereby prolonging the service life of the equipment. At the same time, if the position of the grinding roller is fixed, when the amount of material suddenly increases or the properties of the material change, it may lead to the accumulation of materials in the grinding area, causing blockage. The existence of the adjusting spring enables the grinding roller to slide up and down according to the amount of material and the resistance. When the amount of material increases, the grinding roller slides down to increase the grinding space and avoid material blockage. When the amount of material decreases, the grinding roller returns to the appropriate position under the action of the spring and continues to grind, ensuring the stability of the grinding pressure in the high-speed dispersion and grinding equipment for polyurethane insulating paint raw materials, enhancing the adaptability of the equipment, and improving the smooth operation of the equipment.

[0010] Preferably, a dispersion chamber is provided between the grinding port and the grinding chamber. A dispersion disk is coaxially and rotatably connected in the dispersion chamber. A plurality of dispersion blades are circumferentially and evenly installed on the dispersion disk. A dispersion ring is coaxially installed on the upper end surface of the grinding roller. The dispersion ring is sleeved on the dispersion disk and the dispersion blades. A plurality of dispersion ports are circumferentially formed on the dispersion ring. A driving gear is installed on the rotating shaft. A gear ring is coaxially installed on the lower end surface of the grinding roller. A connecting gear is engaged between the driving gear and the gear ring. The connecting gear is rotatably connected to the housing. When the dispersion disk and the dispersion blades in the dispersion chamber rotate at high speed, due to the existence of the driving gear, the gear ring, and the connecting gear, the dispersion disk and the dispersion ring will rotate in opposite directions. At this time, the dispersion blades will generate a strong shearing and impact effect on the material, breaking up the agglomerated material. At the same time, the dispersion ring and the dispersion ports thereon further divide and guide the material, preventing the material from re-agglomerating and ensuring that the material enters the grinding chamber in a relatively dispersed state. Moreover, under the action of centrifugal force, the raw materials on the dispersion disk will move from the center position of the dispersion disk to the edge. With the continuous action of centrifugal force, the raw materials will finally be thrown to the edge of the dispersion chamber and then pushed into the grinding chamber through the dispersion ports on the dispersion ring. During this process, a downward suction force will be generated at the grinding port, driving the raw materials in the mixing chamber into the dispersion chamber, improving the grinding efficiency of the high-speed dispersion and grinding equipment for polyurethane insulating paint raw materials and enhancing the grinding quality of the equipment.

[0011] Preferably, a flow guiding surface is provided at the connection between the inner wall of the dispersion chamber and the inner wall of the grinding chamber, and the flow guiding surface is arc-shaped; at the connection between the dispersion chamber and the grinding chamber, if there is no flow guiding surface or the design of the flow guiding surface is unreasonable, when the material enters the grinding chamber from the dispersion chamber, it is easy to accumulate at the corner because the flow direction of the material suddenly changes, and some of the material will hit the wall due to inertia, thus forming accumulation; while the arc-shaped flow guiding surface can make the flow direction of the material transition smoothly, reduce the collision and accumulation of the material with the wall, and ensure that the material can flow smoothly from the dispersion chamber into the grinding chamber; at the same time, when the material accumulates at the connection, it will cause the local pressure to increase, resulting in uneven wear on the inner wall of the equipment. In severe cases, it may cause the grinding port to be blocked, affecting the normal operation of the equipment, ensuring the smooth material transportation of the high-speed dispersion and grinding equipment for polyurethane insulating paint raw materials, and the consistency of the grinding quality of the polyurethane insulating paint raw materials.

[0012] Preferably, a plurality of heat dissipation fins are provided on the outer side wall of the housing, and the plurality of heat dissipation fins are circumferentially distributed outside the overflow channel, and the heights of the plurality of heat dissipation fins are flush with the overflow channel; during the operation of the high-speed dispersion and grinding equipment for polyurethane insulating paint raw materials, a large amount of heat will be generated due to reasons such as motor drive and friction between grinding components; if these heats cannot be dissipated in time, it will cause the equipment temperature to be too high; the setting of the heat dissipation fins increases the contact area between the equipment and the outside air, and can effectively conduct the heat inside the equipment to the air, avoiding the equipment from malfunctioning due to overheating; at the same time, too high a temperature may cause the performance of the polyurethane insulating paint raw materials to change. The heat dissipation fins dissipate heat in time, which helps to maintain the raw materials within a suitable temperature range and avoid the adverse effects on the raw material performance caused by too high a temperature, ensuring the stability of the high-speed dispersion and grinding equipment for polyurethane insulating paint raw materials during operation.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. In the present invention, a mixing chamber, a grinding chamber and an overflow channel are coaxially provided in the housing. The motor drives the rotating shaft to rotate, and the stirring paddle fully stirs the raw materials entering the mixing chamber, making the polyurethane insulating paint raw materials of different components preliminarily mixed evenly. The raw materials enter the grinding chamber from the mixing chamber through the grinding port and are ground under the action of the grinding roller. During the grinding process, the raw materials at the lower end of the grinding chamber are pushed by the stirring paddle and flow back to the mixing chamber through the overflow channel, avoiding the problem that the agglomeration of particles cannot be completely solved, resulting in unsatisfactory dispersion effect, and ensuring the grinding effect of the high-speed dispersion and grinding equipment for polyurethane insulating paint raw materials.

[0014] 2. In the present invention, inner liners and outer liners are respectively provided on the inner side wall of the grinding chamber and the outer side wall of the grinding roller, so that the grinding space gradually becomes smaller from the upper part to the lower part; the raw materials can fully pass through grinding areas with different degrees, avoiding the problem of performance differences in insulating paint caused by uneven grinding, and also avoiding local excessive wear, ensuring the service life of the liners, reducing the equipment maintenance cost, improving the grinding efficiency of the high-speed dispersion grinding equipment for polyurethane insulating paint raw materials, and ensuring the stability of product quality.

[0015] 3. In the present invention, a dispersion chamber is provided between the grinding port and the grinding chamber. A dispersion disk is coaxially and rotatably connected in the dispersion chamber. A plurality of dispersion blades are circumferentially and evenly installed on the dispersion disk. A dispersion ring is coaxially installed on the upper end surface of the grinding roller, and a plurality of dispersion ports are circumferentially formed on the dispersion ring; when the dispersion disk and the dispersion blades rotate at high speed, they generate shearing and impact effects on the materials, breaking up the agglomerated materials; the raw materials on the dispersion disk drive the raw materials in the mixing chamber into the dispersion chamber under the action of centrifugal force, improving the grinding efficiency of the high-speed dispersion grinding equipment for polyurethane insulating paint raw materials and enhancing the grinding quality of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of the high-speed dispersion grinding equipment for polyurethane insulating paint raw materials of the present invention; Figure 2 for the present invention Figure 1 is a sectional view taken along line A-A in Figure 3 for the present invention Figure 2 is a sectional view taken along line B-B in Figure 4 for the present invention Figure 2 is a sectional view taken along line C-C in Figure 5 is an exploded view of the high-speed dispersion grinding equipment for polyurethane insulating paint raw materials of the present invention.

[0017] In the figure: 1. Housing; 2. Rotating shaft; 301. Driving gear; 302. Tooth ring; 303. Connecting gear; 401. Grinding roller; 402. Grinding chamber; 403. Grinding port; 501. Stirring paddle; 502. Mixing chamber; 601. Overflow channel; 602. Feed port; 603. Discharge port; 604. Flow guiding surface; 701. Inner liner; 702. Outer liner; 703. Grinding teeth; 704. Coarse grinding section; 705. Fine grinding section; 801. Dispersion chamber; 802. Dispersion disk; 803. Dispersion blades; 804. Dispersion ring; 805. Dispersion port; 901. Adjusting spring; 902. Heat dissipation fin. DETAILED DESCRIPTION OF THE INVENTION

[0018] Please refer to Figures 1 to 5, the present invention provides a high-speed dispersion and grinding equipment for polyurethane insulation paint raw materials, and the technical solution is as follows: A high-speed dispersion and grinding equipment for polyurethane insulation paint raw materials, please refer to Figures 1 to 5, including a housing 1, a rotating shaft 2, a motor, a grinding roller 401 and a stirring paddle 501. The rotating shaft 2 is coaxially and rotatably connected inside the housing 1, and the lower end of the rotating shaft 2 extends outside the housing 1. The motor is installed on the lower end face of the housing 1 and connected to the rotating shaft 2. Inside the housing 1, there are coaxially arranged a mixing chamber 502, a grinding chamber 402 and an overflow channel 601. The mixing chamber 502 is located above the grinding chamber 402. There is a grinding opening 403 opened between the mixing chamber 502 and the grinding chamber 402. The upper and lower ends of the overflow channel 601 are respectively communicated with the upper end of the mixing chamber 502 and the lower end of the grinding chamber 402. There are a plurality of heat dissipation fins 902 provided on the outer side wall of the housing 1. The plurality of heat dissipation fins 902 are circumferentially and evenly distributed outside the overflow channel 601, and the height of the plurality of heat dissipation fins 902 is flush with the overflow channel 601. The upper and lower ends of the housing 1 are respectively provided with a feed inlet 602 and a discharge outlet 603. The feed inlet 602 is communicated with the upper end of the mixing chamber 502, and the discharge outlet 603 is communicated with the lower end of the overflow channel 601. The grinding roller 401 is rotatably connected inside the grinding chamber 402. The grinding roller 401 is coaxially connected to the rotating shaft 2. The rotating shaft 2 extends into the mixing chamber 502. The stirring paddle 501 is installed on the upper end face of the rotating shaft 2. Inner lining plates 701 and outer lining plates 702 are respectively provided on the inner side wall of the grinding chamber 402 and the outer side wall of the grinding roller 401. Both the inner lining plates 701 and the outer lining plates 702 are frustum-shaped. The cone angle of the inner lining plates 701 is larger than that of the outer lining plates 702. The diameter of the lower bottom surface of the inner lining plates 701 is larger than that of the outer lining plates 702. A plurality of grinding teeth 703 are provided on both the inner lining plates 701 and the outer lining plates 702. The plurality of grinding teeth 703 are all arc-shaped. The plurality of grinding teeth 703 installed on the inner lining plates 701 are all left-handed, and the plurality of grinding teeth 703 installed on the outer lining plates 702 are all right-handed. The plurality of grinding teeth 703 on the inner lining plates 701 and the outer lining plates 702 are also divided into a rough grinding section 704 and a fine grinding section 705. The rough grinding section 704 is located above the fine grinding section 705. The module of the plurality of grinding teeth 703 in the rough grinding section 704 is larger than that of the plurality of grinding teeth 703 in the fine grinding section 705. The grinding roller 401 is slidably connected to the rotating shaft 2. A regulating spring 901 is sleeved on the rotating shaft 2. The upper and lower ends of the regulating spring 901 are respectively connected to the lower end face of the grinding roller 401 and the housing 1. There is a dispersion chamber 801 provided between the grinding opening 403 and the grinding chamber 402. A dispersion disk 802 is coaxially and rotatably connected inside the dispersion chamber 801. A plurality of dispersion vanes 803 are circumferentially and evenly installed on the dispersion disk 802. A dispersion ring 804 is coaxially installed on the upper end face of the grinding roller 401. The dispersion ring 804 is sleeved on the dispersion disk 802 and the dispersion vanes 803. A plurality of dispersion openings 805 are circumferentially opened on the dispersion ring 804. A driving gear 301 is installed on the rotating shaft 2. A gear ring 302 is coaxially installed on the lower end face of the grinding roller 401. A connecting gear 303 is meshed between the driving gear 301 and the gear ring 302. The connecting gear 303 is rotatably connected to the housing 1. A guiding surface 604 is provided at the connection between the inner wall of the dispersion chamber 801 and the inner wall of the grinding chamber 402. The guiding surface 604 is arc-shaped.

[0019] During operation, please refer to Figures 1 to 5 When in operation, the raw materials of the polyurethane insulating paint enter the mixing chamber 502 from the feed port 602 at the upper end of the housing 1. The motor drives the rotating shaft 2 to rotate, and the rotating shaft 2 drives the stirring paddle 501 mounted on its upper end face to rotate in the mixing chamber 502, preliminarily stirring and mixing the raw materials entering the mixing chamber 502 to make the raw materials preliminarily mixed evenly in the mixing chamber 502. At this time, the rotating stirring paddle 501 will push the evenly mixed polyurethane insulating paint raw materials towards the grinding port 403. The raw materials after preliminary mixing enter the dispersion chamber 801 through the grinding port 403. When the dispersion blades 803 rotate, they generate centrifugal force and throw the raw materials at high speed towards the dispersion ring 804. Due to the presence of the driving gear 301, the gear ring 302 and the connecting gear 303, the dispersion disc 802 and the dispersion ring 804 will rotate in opposite directions. At this time, the dispersion blades 803 will have a strong shearing and impact effect on the materials, breaking up the agglomerated materials. Further, the dispersed raw materials enter the grinding chamber 402, and the motor drives the grinding roller 401 to rotate through the rotating shaft 2. Since the grinding roller 401 is slidably connected to the rotating shaft 2 and the adjusting spring 901 is sleeved on the rotating shaft 2, the grinding roller 401 can move up and down in the grinding chamber 402 to adapt to different grinding pressure requirements. The inner lining plate 701 on the inner side wall of the grinding chamber 402 and the outer lining plate 702 on the outer side wall of the grinding roller 401 are both frustum-shaped, and the taper angle of the inner lining plate 701 is larger than that of the outer lining plate 702, and the bottom diameter is also larger than that of the outer lining plate 702. This design makes the grinding space gradually increase from bottom to top, which is conducive to the flow and distribution of the raw materials during the grinding process. The raw materials first pass through the rough grinding section 704, where the larger particles of the raw materials are preliminarily broken and ground, and then enter the fine grinding section 705 for finer grinding to make the raw materials meet the higher fineness requirements. It should be noted that when the grinding roller 401 rotates, the setting of the grinding teeth 703 makes the raw materials, while being squeezed and ground between the grinding roller 401 and the inner lining plate 701, also generate axial and circumferential flows, so that the raw materials are more fully and evenly ground in the grinding chamber 402.

[0020] Furthermore, since the upper and lower ends of the overflow channel 601 are respectively connected to the upper end of the mixing chamber 502 and the lower end of the grinding chamber 402, the raw materials will rise along the overflow channel 601 and return to the mixing chamber 502, and are again stirred by the stirring paddle 501, dispersed in the dispersion chamber 801 and ground in the grinding chamber 402 to form a cycle. Through multiple cycles, the raw materials can be continuously refined and mixed evenly until the required dispersion and grinding effects are achieved. When the raw materials meet the specified dispersion and grinding requirements, they are discharged from the discharge port 603 at the lower end of the housing 1, completing the entire processing process.

[0021] It should be noted that heat is generated during the operation of the device, and the heat dissipation fins 902 circumferentially and uniformly distributed outside the outer side wall of the housing 1 outside the overflow channel 601 can dissipate the heat inside the device into the air; the height of the heat dissipation fins 902 is flush with the overflow channel 601, which helps to better dissipate the heat of the overflow channel 601, maintain the temperature stability of the device, avoid affecting the performance and service life of the device due to overheating, and ensure the normal operation of each component of the device.

[0022] The above has described in detail a specific embodiment of the present invention in conjunction with the accompanying drawings, but the present invention is not limited to the described embodiment. For those skilled in the art, without departing from the principles and ideas of the present invention, various changes, modifications, substitutions, and variations made to these embodiments should still fall within the protection scope of the present invention.

Claims

1. A high-speed dispersion and grinding equipment for polyurethane insulation paint raw materials, characterized in that It includes a housing (1), a rotating shaft (2), a motor, a grinding roller (401) and a stirring paddle (501). The rotating shaft (2) is coaxially and rotatably connected inside the housing (1), and the lower end of the rotating shaft (2) extends outside the housing (1). The motor is installed on the lower end face of the housing (1) and connected to the rotating shaft (2). A mixing chamber (502), a grinding chamber (402) and an overflow channel (601) are coaxially arranged inside the housing (1). The mixing chamber (502) is located above the grinding chamber (402). A grinding opening (403) is provided between the mixing chamber (502) and the grinding chamber (402). The upper and lower ends of the overflow channel (601) are respectively communicated with the upper end of the mixing chamber (502) and the lower end of the grinding chamber (402). The upper and lower ends of the housing (1) are respectively provided with a feed inlet (602) and a discharge outlet (603). The feed inlet (602) is communicated with the upper end of the mixing chamber (502), and the discharge outlet (603) is communicated with the lower end of the overflow channel (601). The grinding roller (401) is rotatably connected inside the grinding chamber (402). The grinding roller (401) is coaxially connected with the rotating shaft (2). The rotating shaft (2) extends into the mixing chamber (502). The stirring paddle (501) is installed on the upper end face of the rotating shaft (2).

2. The high-speed dispersion and grinding equipment for polyurethane insulation paint raw materials according to claim 1, wherein: Inner lining plates (701) and outer lining plates (702) are respectively provided on the inner side wall of the grinding chamber (402) and the outer side wall of the grinding roller (401). Both the inner lining plates (701) and the outer lining plates (702) are frustum-shaped. The cone angle of the inner lining plates (701) is larger than that of the outer lining plates (702). The diameter of the lower bottom surface of the inner lining plates (701) is larger than that of the lower bottom surface of the outer lining plates (702).

3. The high-speed dispersion and grinding equipment for raw materials of polyurethane insulating paint according to claim 2, characterized in that: A plurality of grinding teeth (703) are provided on both the inner lining plates (701) and the outer lining plates (702). The plurality of grinding teeth (703) are all arc-shaped. The plurality of grinding teeth (703) installed on the inner lining plates (701) are all left-handed, and the plurality of grinding teeth (703) installed on the outer lining plates (702) are all right-handed.

4. The high-speed dispersion and grinding equipment for raw materials of a polyurethane insulating paint according to claim 3, characterized in that: The plurality of grinding teeth (703) on the inner lining plates (701) and the outer lining plates (702) are further divided into a rough grinding section (704) and a fine grinding section (705). The rough grinding section (704) is located above the fine grinding section (705). The module of the plurality of grinding teeth (703) in the rough grinding section (704) is larger than that of the plurality of grinding teeth (703) in the fine grinding section (705).

5. The high-speed dispersion and grinding equipment for polyurethane insulation paint raw materials according to claim 4, characterized in that: The grinding roller (401) is slidably connected with the rotating shaft (2). An adjusting spring (901) is sleeved on the rotating shaft (2). The upper and lower ends of the adjusting spring (901) are respectively connected with the lower end face of the grinding roller (401) and the housing (1).

6. The high-speed dispersion and grinding equipment for polyurethane insulation paint raw materials according to claim 5, characterized in that: A dispersion chamber (801) is provided between the grinding port (403) and the grinding chamber (402). A dispersion disk (802) is coaxially and rotatably connected in the dispersion chamber (801). A plurality of dispersion vanes (803) are circumferentially and uniformly installed on the dispersion disk (802). A dispersion ring (804) is coaxially installed on the upper end surface of the grinding roll (401). The dispersion ring (804) is sleeved on the dispersion disk (802) and the dispersion vanes (803). A plurality of dispersion openings (805) are circumferentially formed in the dispersion ring (804). A driving gear (301) is installed on the rotating shaft (2). A gear ring (302) is coaxially installed on the lower end surface of the grinding roll (401). A connecting gear (303) is meshed between the driving gear (301) and the gear ring (302). The connecting gear (303) is rotatably connected to the housing (1).

7. The high-speed dispersion and grinding equipment for raw materials of polyurethane insulating paint according to claim 6, characterized in that: A guiding surface (604) is provided at the connection between the inner wall of the dispersion chamber (801) and the inner wall of the grinding chamber (402). The guiding surface (604) is arc-shaped.

8. A high-speed dispersion and grinding device for polyurethane insulation paint raw materials according to claim 1, characterized in that: A plurality of heat dissipation fins (902) are provided on the outer side wall of the housing (1). The plurality of heat dissipation fins (902) are circumferentially and uniformly arranged outside the overflow channel (601), and the heights of the plurality of heat dissipation fins (902) are flush with the overflow channel (601).

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