A-grade polyurethane fireproof thermal insulation material production equipment

Abstract

The utility model provides A-grade polyurethane fireproof thermal insulation material production equipment which comprises a component A feeding tank, a component B feeding tank, a solid flame retardant feeding tank, a solid-liquid mixing tank and a material distribution forming device, and the component A feeding tank and the component B feeding tank are connected with a liquid feeding port of the solid-liquid mixing tank through a liquid feeding device. The solid flame retardant feeding tank is connected with a solid feeding port of the solid-liquid mixing tank through the solid feeding device, a discharging port of the solid-liquid mixing tank is connected with the material distributing and forming device through a discharging pipe, a push type stirrer is installed in the solid-liquid mixing tank, the solid feeding device comprises a bridging crusher and a spiral feeder, and the spiral feeder is connected with the discharging port of the solid-liquid mixing tank. And two ends of the bridging crusher are respectively connected with a discharge port of the solid flame retardant feeding tank and a feed port of the spiral feeder. According to the utility model, the layering phenomenon and the bridging phenomenon of solid materials are solved, mixing, conveying and material distribution of liquid and solid are carried out at the same time, and continuous production of the materials is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of polyurethane heat-insulating material production, in particular to A-grade polyurethane fireproof heat-insulating material production equipment. Background Art

[0002] Traditional polyurethane production equipment includes polyurethane foaming machines, pouring machines and other equipment. The raw materials used during processing are all liquid, and the polyurethane sheets produced can only achieve B1 grade flame retardancy. If the flame retardancy of the polyurethane sheets is to be upgraded to grade A, solid flame retardants need to be added. Existing solid-liquid mixing production equipment, such as the production equipment of polyurethane foam boards with patent publication number CN203994411U, includes a polyol feeding tank, an isocyanate feeding tank, a solid flame retardant feeding tank, a mixer and a foaming molding machine. The polyol feeding tank and the isocyanate feeding tank add liquid to the mixer through a gear pump, and the solid flame retardant feeding tank adds solid to the mixer through a screw pump. The mixer mixes the solid and liquid completely through a mechanical stirring mixer and then outputs them to the molding machine for foaming molding.

[0003] However, the above-mentioned production device has the following disadvantages: 1. Since the solid raw material of Grade A polyurethane is a mixture of multiple materials, which is a mixture of powder material and granular material, the density of each component is quite different. Long-term mechanical stirring of the material in the mixer will cause the material to be stratified, that is, the material with low density is concentrated at the top, and the material with high density is concentrated at the bottom, resulting in uneven distribution of the flame retardant in the polyurethane board; 2. Since the solid raw material of Grade A polyurethane has poor fluidity, the use of traditional screw feeding pumps will cause bridging phenomenon during the transportation process, resulting in the solid-liquid ratio in the mixer deviating from the design value. Utility Model Content

[0004] In order to solve the deficiencies of the above-mentioned prior art, the utility model provides a Class A polyurethane fireproof and thermal insulation material production equipment, which solves the stratification and bridging phenomena of solid materials, realizes the mixing, conveying and laying of liquid and solid at the same time, realizes the continuous production of materials, ensures the quality of materials, and the processed thermal insulation materials are uniform in quality and have both fireproof performance, physical properties and thermal insulation performance.

[0005] The technical scheme of the utility model is: a kind of A-class polyurethane fireproof and heat-insulating material production equipment, comprising an A component feeding tank, a B component feeding tank, a solid flame retardant feeding tank, a solid-liquid mixing tank and a cloth forming device, the A component feeding tank and the B component feeding tank are connected with the liquid feeding port of the solid-liquid mixing tank through the liquid feeding device, the solid flame retardant feeding tank is connected with the solid feeding port of the solid-liquid mixing tank through the solid feeding device, the discharge port of the solid-liquid mixing tank is connected with the cloth forming device through a discharge pipe, a propulsion agitator is installed inside the solid-liquid mixing tank, the solid feeding device comprises a bridge breaker and a screw feeder, the two ends of the bridge breaker are respectively connected with the discharge port of the solid flame retardant feeding tank and the feed port of the screw feeder, and the discharge port of the screw feeder is connected with the solid feeding port of the solid-liquid mixing tank. By installing a propeller mixer on the inside of the solid-liquid mixing tank, the mixing and output of solid and liquid materials can be combined to reduce the mixing time of the materials, thereby solving the stratification problem of solid materials caused by long mixing. A bridge breaker is set at the outlet of the solid flame retardant feeding tank to complete the pre-mixing of the powder before it enters the screw feeder, improve its fluidity, and avoid the occurrence of bridging phenomenon.

[0006] The solid-liquid mixing tank has a liquid premixing part inside or outside, which is used to premix the liquid materials of the A component feeding tank and the B component feeding tank entering the solid-liquid mixing tank. The liquid premixing part can premix the white material of the A component and the black material of the B component, so that most of the black material reacts with the white material first, thereby avoiding the black material from reacting with the amino group in the solid flame retardant in advance, reducing powdering, and improving the strength and toughness of the polyurethane.

[0007] The liquid premixing section is arranged inside the solid-liquid mixing tank, the position of the liquid feeding port is higher than the position of the solid feeding port, and the liquid premixing section is the space formed between the liquid feeding port and the solid feeding port inside the solid-liquid mixing tank. The white material of component A and the black material of component B are added into the solid-liquid mixing tank from the liquid feeding port at a higher position, and can react before the solid components entering the solid-liquid mixing tank from the solid feeding port, thereby achieving the purpose of premixing.

[0008] The liquid premixing part is arranged on the outside of the solid-liquid mixing tank, and the liquid premixing part is a foaming machine mixing head. The outlet of the foaming machine mixing head is connected to the liquid feeding port of the solid-liquid mixing tank, and the two injection ports of the foaming machine mixing head are respectively connected to the liquid feeding device outlets of the A component feeding tank and the B component feeding tank through pipelines.

[0009] The foaming machine includes a component A feeding tank, a component B feeding tank, a liquid metering pump and a liquid feed control valve, wherein the liquid metering pump and the liquid feed control valve are connected in series between the component A feeding tank / component B feeding tank and the solid-liquid mixing tank via a pipeline. The liquid metering pump realizes quantitative addition of liquid components in the component A feeding tank and the component B feeding tank.

[0010] Agitators are installed inside the A component feeding tank and the B component feeding tank, and heat exchangers are installed outside the A component feeding tank and the B component feeding tank.

[0011] The solid flame retardant feeding tank is provided with a vertical stirrer or a propeller stirrer, thereby improving the uniformity of the solid flame retardant supply.

[0012] The bridge breaker includes a feed pipe, a drive motor and a crushing and stirring rod. The feed pipe is vertically installed between the discharge port of the solid flame retardant feeding tank and the feed port of the screw feeder. The drive motor is fixed on the outside of the feed pipe, and the output shaft of the drive motor horizontally passes through the feed pipe and is connected to the crushing and stirring rod.

[0013] The solid-liquid mixing tank is provided with a cleaning pipe interface, and the cleaning pipe interface is connected to a cleaning pump and a cleaning tank in sequence through a cleaning pipeline.

[0014] The fabric forming device includes a fabric gun and an XY biaxial motion platform. The fabric gun is connected to the outlet of the discharge pipe. The fabric gun is fixed on the X-axis slider of the XY biaxial motion platform and performs two-dimensional reciprocating motion along the XY plane under the drive of the XY biaxial motion platform.

[0015] The solid flame retardant feed tank, solid-liquid mixing tank and solid feed device are each two, which are connected in parallel to the outlet pipelines of the A component feed tank and the B component feed tank in two groups. The solid-liquid mixing tank of each group is independently provided with the liquid feed device between the A component feed tank and the B component feed tank, and the discharge pipe of the solid-liquid mixing tank of each group is connected to the material distribution forming device through a three-way valve. Two sets of the same solid feed device and solid-liquid mixing tank can realize alternating continuous material distribution.

[0016] The beneficial effects of the utility model are as follows: the scheme arranges a bridge breaker at the outlet of the solid flame retardant feeding tank to complete the pre-stirring of the powder before it enters the spiral feeder, thereby improving its fluidity and avoiding the occurrence of the bridging phenomenon; at the same time, the propeller mixer in the solid-liquid mixing tank stirs and transports the solid-liquid mixture in the tank, reducing the stirring time of the material, thereby solving the problem of stratification of the solid material due to long stirring, and achieving mixing, conveying and distribution at the same time, thereby ensuring the continuous production of the material. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the device connection of the utility model;

[0018] Figure 2 It is a schematic diagram of the connection of a device with two solid-liquid mixing tanks in the utility model;

[0019] Figure 3 It is a structural schematic diagram of the solid-liquid mixing tank in the utility model;

[0020] Figure 4 It is a structural schematic diagram of the solid flame retardant feeding tank in the utility model;

[0021] Figure 5 It is a structural schematic diagram of the cloth forming device in the utility model.

[0022] Figure numerals: 1. A component feeding tank; 2. B component feeding tank; 3. Solid flame retardant feeding tank; 4. Solid-liquid mixing tank; 401. Cleaning pipe interface; 5. Propeller agitator; 501. Vertical auger; 502. Mixing blade; 6. Bridge breaker; 601. Feeding pipe; 602. Driving motor; 603. Breaking stirring rod; 7. Screw feeder; 8. Foaming machine mixing head; 9. Agitator; 10. Heat exchanger; 11. Liquid feed control valve; 12. Liquid metering pump; 13. Cleaning tank; 14. Cleaning pump; 15. Cloth forming device; 1501. Cloth gun; 1502. XY dual-axis motion platform; 1503. X-axis slider; 1504. Chain conveyor belt; 16. PLC controller; 17. Three-way valve. DETAILED DESCRIPTION

[0023] In order to enable those skilled in the art to better understand the technical solution in the utility model, the technical solution in the utility model is clearly and completely described below in conjunction with the accompanying drawings. Other embodiments obtained by those skilled in the art without making any creative work should all fall within the protection scope of the utility model.

[0024] like Figure 1 As shown, the utility model provides a Class A polyurethane fireproof and heat-insulating material production equipment, including an A component feeding tank 1, a B component feeding tank 2, a solid flame retardant feeding tank 3, a solid-liquid mixing tank 4 and a cloth forming device 15, wherein the A component feeding tank 1 and the B component feeding tank 2 are connected to a liquid feeding port 401 of the solid-liquid mixing tank 4 via a liquid feeding device, the solid flame retardant feeding tank 3 is connected to a solid feeding port 402 of the solid-liquid mixing tank 4 via a solid feeding device, the discharge port of the solid-liquid mixing tank 4 is connected to the cloth forming device 15 via a discharge pipe, and a propeller agitator 5 is installed inside the solid-liquid mixing tank 4, as shown in FIG. Figure 3As shown, the propulsion agitator 5 includes a vertical auger 501 and a stirring blade 502 fixed on the outside of the shaft of the vertical auger 501, so that the stirring blade 502 can stir the material in the tank while the vertical auger 501 completes the material transportation in the vertical direction, reducing the stirring time of the material, thereby solving the stratification problem of the solid material due to long stirring, and achieving mixing, conveying and distribution at the same time, ensuring the continuous production of materials.

[0025] The solid feeding device includes a bridge breaker 6 and a screw feeder 7, the two ends of the bridge breaker 6 are respectively connected to the discharge port of the solid flame retardant feeding tank 3 and the feed port of the screw feeder 7, and the discharge port of the screw feeder 7 is connected to the solid feeding port 402 of the solid-liquid mixing tank 4. Figure 4 As shown, the bridge breaker 6 includes a feed pipe 601, a drive motor 602 and a breaking and stirring rod 603. The feed pipe 601 is vertically installed between the discharge port of the solid flame retardant feeding tank 3 and the feed port of the screw feeder 7. The drive motor 602 is fixed on the outside of the feed pipe 601, and the output shaft of the drive motor 602 horizontally passes through the feed pipe 601 and is connected to the breaking and stirring rod 603. The bridge breaker 6 is arranged at the outlet of the solid flame retardant feeding tank 3 to complete the pre-stirring of the powder before it enters the screw feeder 7, thereby improving the fluidity of the material and avoiding the occurrence of bridging phenomenon. In other embodiments, other forms of stirring devices can also be installed in the feed pipe 601 to achieve the effect of powder flow in the feed pipe 601.

[0026] In order to fully mix the solid materials before entering the screw feeder 7, a vertical stirring device is installed inside the solid flame retardant feeding tank 3. The vertical stirring device can be as follows: Figure 4 The separate mechanical agitator shown in the figure, at this time, the solid flame retardant falls into the discharge pipe 601 under the action of gravity after being stirred, and can also be further set to the same propeller agitator 5 as that in the solid-liquid mixing tank 4, so as to cooperate with the screw feeder 7 on the outside of the solid flame retardant feeding tank 3 to realize the combination of vertical feeding and horizontal feeding of the solid flame retardant, thereby improving the uniformity of the solid flame retardant supply and ensuring the uniformity of the processed thermal insulation material.

[0027] In order to make the white material of component A and the black material of component B mix and react in advance, the solid-liquid mixing tank 4 has a liquid premixing section inside or outside, and most of the black material reacts with the white material in the liquid premixing section first, thereby avoiding the black material from reacting with the amino group in the solid flame retardant in advance, reducing powdering, and improving the strength and toughness of the polyurethane. Figure 1As shown, in this embodiment, the liquid premixing part is arranged on the outside of the solid-liquid mixing tank 4, and the liquid premixing part is a foaming machine mixing head 8. The foaming machine mixing head 8 is a prior art, and its specific structure is not repeated here. The manufacturer can choose a high-pressure foaming machine mixing head 8 or a low-pressure foaming machine mixing head 8 according to demand. The outlet of the foaming machine mixing head 8 is connected to the liquid feeding port 401 of the solid-liquid mixing tank 4, and the two injection ports of the foaming machine mixing head 8 are respectively connected to the liquid feeding device outlets of the A component feeding tank 1 and the B component feeding tank 2 through pipelines.

[0028] In other embodiments, Figure 3 As shown, the liquid premixing part is arranged inside the solid-liquid mixing tank 4. At this time, the position of the liquid feeding port 401 is higher than the position of the solid feeding port 402. The liquid premixing part is the space formed by the liquid feeding port 401 and the solid glue port 402 inside the solid-liquid mixing tank 4. The white material of component A and the black material of component B are added into the solid-liquid mixing tank 4 from the liquid feeding port 401 at a high position, and can react before the solid components entering the solid-liquid mixing tank 4 from the solid feeding port 402, thereby achieving the purpose of premixing.

[0029] In order to ensure stable control of liquid feeding, the liquid feeding device includes a liquid metering pump 12 and a liquid feed control valve 11, and the liquid metering pump 12 and the liquid feed control valve 11 are connected in series between the A component feeding tank 1 / B component feeding tank 2 and the solid-liquid mixing tank 4 through pipelines, and the A component feeding tank 1 and the B component feeding tank 2 are internally installed with a stirrer 9, and the A component feeding tank 1 and the B component feeding tank 2 are externally installed with a heat exchanger 10. The heat exchanger 10 realizes temperature regulation of the liquid feeding tank, and as a preferred embodiment, the production equipment can realize automatic operation of the equipment by installing a PLC controller 16 or other electrical control system.

[0030] Further preferably, a cleaning pipe interface 401 is provided on the solid-liquid mixing tank 4, and the cleaning pipe interface 401 is connected to the cleaning pump 14 and the cleaning tank 13 in sequence through a cleaning pipeline.

[0031] like Figure 5As shown, the fabric forming device 15 includes a fabric gun 1501 and an XY dual-axis motion platform 1502, the fabric gun 1501 is connected to the outlet of the discharge pipe, the fabric gun 1501 is fixed on the X-axis slider 1503 of the XY dual-axis motion platform 1502, and performs two-dimensional reciprocating motion along the XY plane under the drive of the XY dual-axis motion platform 1502. At the same time, in order to realize the batch scale production of polyurethane boards, a chain conveyor belt 1504 is installed under the XY dual-axis motion platform 1502, and the transmission direction of the chain conveyor belt 1504 is the same as the Y-axis transmission direction of the XY dual-axis motion platform 1502, and the chain conveyor belt 1504 of the XY dual-axis motion platform 1502 are both existing technologies, and the specific structure is not repeated.

[0032] like Figure 2 As shown, the solid flame retardant feed tank 3, the solid-liquid mixing tank 4 and the solid feeding device are all two, which are connected in parallel on the outlet pipelines of the A component feed tank 1 and the B component feed tank 2 in two groups. The solid-liquid mixing tank 4 of each group is independently arranged from the liquid feeding device between the A component feed tank 1 and the B component feed tank 2, and the discharge pipe of the solid-liquid mixing tank 4 of each group is connected to the cloth forming device 15 through the three-way valve 17; that is, two groups of liquid feed control valves 1 are connected in parallel on the outlet pipelines of the A component feed tank 1 and the B component feed tank 2. 1 and a liquid metering pump 12; each group of liquid feed control valves 11 and liquid metering pumps 12 are connected to the foaming machine mixing head 8 on the corresponding solid-liquid mixing tank 4 through a pipeline, the solid feeding port of each solid-liquid mixing tank 4 is installed with the corresponding solid flame retardant feeding tank 3, the cleaning pipe interface 401 of each solid-liquid mixing tank 4 is installed with the corresponding cleaning pump 14, and the discharge pipe of each solid-liquid mixing tank 4 is connected to the distribution gun 1501 through a three-way valve 17, so as to realize alternating continuous distribution on the chain conveyor belt 1504 and improve production efficiency.

[0033] The operation process of the technical solution is as follows: (1) the corresponding white material component, black material component and solid flame retardant component in the production formula are added to the A component feeding tank 1, the B component feeding tank 2 and the solid flame retardant feeding tank 3 respectively, and the agitator 9 and the vertical stirring device in the solid flame retardant feeding tank 3 are controlled by the PLC controller 16 to start the agitator 9 to pre-mix the materials in the feeding tanks; (2) the PLC controller 16 controls the opening of the liquid feed control valve 11 and the liquid metering pump 12 to feed the white material and black material in the A component feeding tank 1 and the B component feeding tank 2 to the solid-liquid mixing tank 4 through the foaming machine mixing head 8 respectively, and at the same time, the screw feeder 7 and the drive motor 6 are turned on. 02 and the propeller agitator 5 in the solid-liquid mixing tank 4, the solid components in the solid flame retardant feeding tank 3 are sequentially sent to the solid-liquid mixing tank 4 through the bridge breaker 6 and the screw feeder 7, and the solid feed amount is controlled by controlling the rotation speed of the screw feeder 7; (3) The quantitative solid and liquid in the solid-liquid mixing tank 4 are mixed and quantitatively output through the propeller agitator 5, and a uniform solid-liquid mixture is obtained after mixing, and then poured into the molding mold of the chain conveyor belt 1504 through the discharge pipe and the distribution gun 1501, and after foaming and aging, a Class A polyurethane fireproof and thermal insulation material is obtained; (5) After the pouring is completed, the cleaning pump 14 is started to clean the residual material in the solid-liquid mixing tank 4.

[0034] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, etc. made within the claims of the present invention shall be included in the protection scope of the present invention.

Claims

1. A Class A polyurethane fireproof and heat-insulating material production equipment, comprising a component A feeding tank, a component B feeding tank, a solid flame retardant feeding tank, a solid-liquid mixing tank and a cloth forming device, wherein the component A feeding tank and the component B feeding tank are connected to the liquid feeding port of the solid-liquid mixing tank via the liquid feeding device, the solid flame retardant feeding tank is connected to the solid feeding port of the solid-liquid mixing tank via the solid feeding device, and the discharge port of the solid-liquid mixing tank is connected to the cloth forming device via a discharge pipe, characterized in that: A propeller agitator is installed inside the solid-liquid mixing tank, and the solid feeding device includes a bridge breaker and a screw feeder. The two ends of the bridge breaker are respectively connected to the discharge port of the solid flame retardant feeding tank and the feed port of the screw feeder, and the discharge port of the screw feeder is connected to the solid feeding port of the solid-liquid mixing tank.

2. The A-grade polyurethane fireproof and heat-insulating material production equipment according to claim 1, characterized in that: The solid-liquid mixing tank has a liquid premixing section inside or outside thereof for premixing the liquid materials of the component A feeding tank and the component B feeding tank entering the solid-liquid mixing tank.

3. The A-grade polyurethane fireproof and heat-insulating material production equipment according to claim 2, characterized in that: The liquid premixing section is arranged on the inner side of the solid-liquid mixing tank, the position of the liquid feeding port is higher than the position of the solid feeding port, and the liquid premixing section is the space formed between the liquid feeding port and the solid feeding port on the inner side of the solid-liquid mixing tank.

4. The A-grade polyurethane fireproof and heat-insulating material production equipment according to claim 2, characterized in that: The liquid premixing part is arranged on the outside of the solid-liquid mixing tank, and the liquid premixing part is a foaming machine mixing head. The outlet of the foaming machine mixing head is connected to the liquid feeding port of the solid-liquid mixing tank, and the two injection ports of the foaming machine mixing head are respectively connected to the liquid feeding device outlets of the A component feeding tank and the B component feeding tank through pipelines.

5. A Class A polyurethane fireproof and heat-insulating material production equipment according to any one of claims 1 to 4, characterized in that: The liquid feeding device comprises a liquid metering pump and a liquid feeding control valve, and the liquid metering pump and the liquid feeding control valve are connected in series between the A component feeding tank / the B component feeding tank and the solid-liquid mixing tank via pipelines.

6. The A-grade polyurethane fireproof and heat-insulating material production equipment according to claim 5, characterized in that: Agitators are installed inside the A component feeding tank and the B component feeding tank, and heat exchangers are installed outside the A component feeding tank and the B component feeding tank.

7. A Class A polyurethane fireproof and heat-insulating material production equipment according to any one of claims 1 to 4, characterized in that: A vertical stirrer or a propeller stirrer is arranged in the solid flame retardant feeding tank.

8. A Class A polyurethane fireproof and heat-insulating material production equipment according to any one of claims 1 to 4, characterized in that: The bridge breaker includes a feed pipe, a drive motor and a crushing and stirring rod. The feed pipe is vertically installed between the discharge port of the solid flame retardant feeding tank and the feed port of the screw feeder. The drive motor is fixed on the outside of the feed pipe, and the output shaft of the drive motor horizontally passes through the feed pipe and is connected to the crushing and stirring rod.

9. A Class A polyurethane fireproof and heat-insulating material production equipment according to any one of claims 1 to 4, characterized in that: The solid-liquid mixing tank is provided with a cleaning pipe interface, and the cleaning pipe interface is connected to a cleaning pump and a cleaning tank in sequence through a cleaning pipeline.

10. A Class A polyurethane fireproof and heat-insulating material production equipment according to any one of claims 1 to 4, characterized in that: The fabric forming device includes a fabric gun and an XY biaxial motion platform. The fabric gun is connected to the outlet of the discharge pipe. The fabric gun is fixed on the X-axis slider of the XY biaxial motion platform and performs two-dimensional reciprocating motion along the XY plane under the drive of the XY biaxial motion platform.

11. A Class A polyurethane fireproof and heat-insulating material production equipment according to any one of claims 1 to 4, characterized in that: The solid flame retardant feeding tank, the solid-liquid mixing tank and the solid feeding device are each two in number, which are connected in parallel on the outlet pipelines of the A component feeding tank and the B component feeding tank in two groups. The solid-liquid mixing tank of each group is independently arranged from the liquid feeding device between the A component feeding tank and the B component feeding tank, and the discharge pipe of the solid-liquid mixing tank of each group is connected to the cloth forming device via a three-way valve.

Images