Control device suitable for automatic feeding metering and pretreatment of polyurethane foam

Abstract

The utility model discloses a control device suitable for polyurethane foam automatic feeding metering and pretreatment belongs to polyurethane foam feeding metering technical field, include: support base and foam storage tank, through the cooperation of above each device, in the utility model, through being provided with buffer filter box and weighing - jar - discharge valve interlock system, better realization carries out the pretreatment and automatic control of foam to add discharge, effectively solved the polyurethane foam conveying metering inaccuracy, does not carry out the edulcoration pretreatment, reduces the product quality and the problem of unevenness of foam dispersion, in the design of longitudinal stirring disperser and conical bucket, further reduces the problem of inaccuracy of adding amount caused by the residue of foam in the inner wall and the phenomenon of foam agglomeration, guarantees the stability in the foam treatment process, improves production efficiency, realizes intelligent control, ensures the stability of polyurethane foam recovery and the quality of product.

Description

Technical Field

[0001] This utility model belongs to the field of polyurethane foam feeding and metering technology, and particularly relates to a control device suitable for automatic feeding, metering and pretreatment of polyurethane foam. Background Technology

[0002] During the feeding process of polyurethane foam, the sheets are first crushed into foam particles smaller than 1 cm. Then, the crushed foam is added to the storage tank in bagged packaging. To prevent differences between foams, the crushed foam is currently put into the storage tank and then mixed. Only after the foam is mixed will it be put into the reactor for use. Some foams are pre-treated by drying before being put into the storage tank to ensure the dryness of the foam in the storage tank.

[0003] Current technology primarily involves manually feeding pre-weighed polyurethane foam, which can easily lead to measurement discrepancies and affect the overall product quality. Furthermore, most current storage tanks use a horizontal stirring method, which can cause the foam to agglomerate and compact within the tank, hindering discharge and impacting production efficiency. Additionally, existing feeding methods often fail to remove impurities such as iron from the foam before feeding, potentially affecting the quality of the foam after the reaction.

[0004] Therefore, this utility model provides a control device suitable for automatic feeding, metering, and pretreatment of polyurethane foam to solve the above problems. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] This utility model provides a control device suitable for automatic feeding, metering, and pretreatment of polyurethane foam, aiming to solve the problems mentioned in the background art.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model provides the following technical solution:

[0009] A control device for automatic feeding, metering, and pretreatment of polyurethane foam includes: a support base and a foam storage tank. An electronic scale is fixedly installed on the upper surface of the support base, a storage frame is placed on the upper surface of the electronic scale, and a fan and several weighing modules are fixedly installed on the upper surface of the support base.

[0010] A conical barrel is connected to the lower surface of the foam storage tank. Support legs are fixedly installed at equal intervals on the outer surface of the conical barrel. Each support leg corresponds to a weighing module. One end of each support leg is fixedly connected to the upper surface of the weighing module. A discharge regulating valve is fixedly installed on the lower surface of the conical barrel.

[0011] The upper surface of the support base is fixedly equipped with a controller, and the controller is equipped with a weighing-tank-discharge valve interlocking system.

[0012] As a further description of the above technical solution:

[0013] A support frame is fixedly installed on the upper surface of the support base. A buffer filter box is fixedly installed at one end of the support frame. Magnetic blocks are fixedly installed on both inner walls of the buffer filter box. A suction pipe is fixedly installed at the input end of the buffer filter box. The output end of the buffer filter box is fixedly connected to the input end of the blower. One end of the suction pipe extends into the interior of the storage frame.

[0014] As a further description of the above technical solution:

[0015] A feed regulating valve is fixedly installed in the middle section of the suction pipeline, and a nitrogen purging regulating valve is installed on the outer surface of the suction pipeline. The nitrogen purging regulating valve is located above the feed regulating valve.

[0016] As a further description of the above technical solution:

[0017] The output end of the blower is fixedly installed with a feed pipeline. One end of the feed pipeline is connected to the outer surface of the foam storage tank. The upper surface of the foam storage tank is connected to a purging pipeline, and one end of the purging pipeline is fixedly installed with a purging regulating valve.

[0018] As a further description of the above technical solution:

[0019] An exhaust pipe is connected to the outer surface of the foam storage tank. An exhaust regulating valve is fixedly installed at one end of the exhaust pipe, and an exhaust buffer groove is fixedly installed at one end of the exhaust regulating valve through a connecting pipe.

[0020] As a further description of the above technical solution:

[0021] Both the foam storage tank and the conical barrel are fixedly installed with a stirring and dispersing device. One end of the stirring and dispersing device extends to the outside of the foam storage tank and the conical barrel. The outer surface of the stirring and dispersing device is fixedly installed with a toothed sprocket, and the toothed sprockets are connected to each other by a toothed chain drive.

[0022] As a further description of the above technical solution:

[0023] A mounting frame is fixedly installed on the outer surface of the foam storage tank, and a stirring motor is fixedly installed on the inner wall of the mounting frame. The output end of the stirring motor is fixedly connected to one end of the stirring and dispersing device inside the foam storage tank.

[0024] (III) Beneficial Effects

[0025] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0026] This invention, by incorporating a buffer filter box and a weighing-tank-discharge valve interlocking system, effectively achieves pretreatment of foam and automatic control of added material, thus solving the problems of inaccurate metering of polyurethane foam conveying, lack of impurity removal pretreatment, reduced product quality, and uneven foam dispersion. The design of the longitudinal stirring disperser and conical drum further reduces foam residue on the inner wall and foam agglomeration, preventing inaccurate addition and ensuring stability during foam processing. Simultaneously, it improves production efficiency, achieves intelligent control, and ensures the stability of polyurethane foam recycling and product quality. Attached Figure Description

[0027] Figure 1 This is a three-dimensional structural diagram of a control device suitable for automatic feeding, metering, and pretreatment of polyurethane foam.

[0028] Figure 2 This is a cross-sectional structural diagram of a foam storage tank in a control device suitable for automatic feeding, metering, and pretreatment of polyurethane foam.

[0029] Figure 3 For use in control devices suitable for automatic feeding, metering, and pretreatment of polyurethane foam Figure 2 A magnified structural diagram of point A in the middle.

[0030] Figure 4 This is a schematic diagram of the planar structure of the weighing-tank-discharge valve interlocking system in a control device suitable for automatic feeding, metering, and pretreatment of polyurethane foam.

[0031] Legend:

[0032] 1. Electronic platform scale; 2. Storage frame; 3. Feed regulating valve; 4. Buffer filter box; 5. Blower; 6. Controller; 7. Nitrogen purging regulating valve; 8. Weighing-tank-discharge valve interlock system; 9. Weighing module; 10. Purging regulating valve; 11. Agitator / disperser; 12. Conical tank; 13. Exhaust regulating valve; 14. Exhaust buffer tank; 15. Foam storage tank; 16. Agitator motor; 17. Discharge regulating valve; 18. Support base; 19. Suction pipeline; 20. Support frame; 21. Feed pipeline; 22. Purging pipeline; 23. Exhaust pipeline; 24. Mounting frame; 25. Support leg; 26. Toothed sprocket. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0034] In specific implementation, such as Figures 1-4 As shown, this utility model provides a technical solution: a control device suitable for automatic feeding, metering, and pretreatment of polyurethane foam, including a support base 18 and a foam storage tank 15. An electronic scale 1 is fixedly installed on the upper surface of the support base 18, and a storage frame 2 is placed on the upper surface of the electronic scale 1. A fan 5 and several weighing modules 9 are fixedly installed on the upper surface of the support base 18. A conical barrel 12 is connected to the lower surface of the foam storage tank 15. Support legs 25 are fixedly installed at equal intervals on the outer surface of the conical barrel 12. Each support leg 25 corresponds to a weighing module 9. One end of the support leg 25 is fixedly connected to the upper surface of the weighing module 9. A discharge regulating valve 17 is fixedly installed on the lower surface of the conical barrel 12. A controller 6 is fixedly installed on the upper surface of the support base 18. The controller 6 has a weighing-tank-discharge valve interlocking system 8 inside.

[0035] A support frame 20 is fixedly installed on the upper surface of the support base 18. A buffer filter box 4 is fixedly installed at one end of the support frame 20. Magnetic blocks are fixedly installed on both inner walls of the buffer filter box 4. A suction pipe 19 is fixedly installed at the input end of the buffer filter box 4. The output end of the buffer filter box 4 is fixedly connected to the input end of the blower 5. One end of the suction pipe 19 extends into the interior of the storage frame 2.

[0036] A feed regulating valve 3 is fixedly installed in the middle section of the suction pipeline 19, and a nitrogen purging regulating valve 7 is installed on the outer surface of the suction pipeline 19. The nitrogen purging regulating valve 7 is located above the feed regulating valve 3.

[0037] A feed line 21 is fixedly installed at the output end of the blower 5. One end of the feed line 21 is connected to the outer surface of the foam storage tank 15. A purge line 22 is installed on the upper surface of the foam storage tank 15. A purge regulating valve 10 is fixedly installed at one end of the purge line 22.

[0038] An exhaust pipe 23 is installed on the outer surface of the foam storage tank 15. An exhaust regulating valve 13 is fixedly installed at one end of the exhaust pipe 23. An exhaust buffer groove 14 is fixedly installed at one end of the exhaust regulating valve 13 through a connecting pipe.

[0039] Specifically, through the cooperation of the above-mentioned structures, the storage frame 2 containing the crushed polyurethane foam is placed on the electronic platform scale 1. Before adding material to the foam storage tank 15, the required amount is set on the controller 6. Then, the feed regulating valve 3 is opened, and under the suction of the blower 5, the crushed foam is transported to the foam storage tank 15 through the feed pipe 21. During the process of the foam entering the foam storage tank 15, the buffer filter box 4 filters out impurities such as iron in the foam under the action of the magnetic block, thereby achieving the filtration and cleaning of impurities in the foam. During the feeding process, the weighing-tank-discharge valve interlocking system 8, in cooperation with the weighing module 9, The system monitors the amount of foam fed online to ensure accuracy. After opening the exhaust regulating valve 13, the foam storage tank 15 automatically vents through the exhaust pipeline 23 and the exhaust buffer tank 14 during the feeding process to ensure normal feeding. After the foam mixing is completed, the discharge regulating valve 17 is opened to discharge the foam from the foam storage tank 15 and the conical barrel 12. After the foam reaches the required amount, the discharge regulating valve 17 is closed. After the discharge is completed, the purging regulating valve 10 is opened, and nitrogen is injected into the foam storage tank 15 and the conical barrel 12 through the purging pipeline 22 to purge the interior of the foam storage tank 15 and the conical barrel 12.

[0040] It should be noted that the weighing-tank-discharge valve interlocking system 8 controls the electronic platform scale 1, the feed regulating valve 3, the weighing module 9 and the discharge regulating valve 17 through the controller 6, so as to realize the automatic feeding and metering of foam storage tank 15.

[0041] It should be noted that the control unit of the weighing-tank-discharge valve interlock system 8 in the above description is selected as needed. This part is well-known technology in the field and will not be described in detail here.

[0042] A stirring and dispersing device 11 is fixedly installed on the inner side wall of both the foam storage tank 15 and the conical barrel 12. One end of the stirring and dispersing device 11 extends to the outside of the foam storage tank 15 and the conical barrel 12. A toothed sprocket 26 is fixedly installed on the outer surface of the stirring and dispersing device 11. The toothed sprockets 26 are connected to each other by a toothed chain drive.

[0043] A mounting bracket 24 is fixedly installed on the outer surface of the foam storage tank 15. A stirring motor 16 is fixedly installed on the inner wall of the mounting bracket 24. The output end of the stirring motor 16 is fixedly connected to one end of the stirring disperser 11 inside the foam storage tank 15.

[0044] Specifically, through the cooperation between the above structures, after the foam storage tank 15 is filled, the weighing-tank-discharge valve interlocking system 8 will automatically stop feeding. Then, after the nitrogen purging regulating valve 7 is opened, nitrogen is injected into the suction line 19 to purge the suction line 19. Then, the stirring motor 16 is started. As the stirring motor 16 works, it will drive the stirring disperser 11 to rotate in the foam storage tank 15. Under the transmission of the toothed sprocket 26 and the toothed chain, it will drive another stirring disperser 11 to rotate in the conical barrel 12, thereby stirring the foam in the foam storage tank 15 and the conical barrel 12 evenly. The design of the longitudinal stirring disperser 11 and the conical barrel 12 can reduce the problem of foam residue on the inner wall and foam agglomeration, which leads to inaccurate feeding.

[0045] Working principle: Place the storage box 2 containing crushed polyurethane foam on the electronic platform scale 1. Before adding material to the foam storage tank 15, set the required amount on the controller 6. Then, open the feed regulating valve 3. Under the suction of the blower 5, the crushed foam is transported to the foam storage tank 15 through the feed pipe 21. During the process of the foam entering the foam storage tank 15, the buffer filter box 4 will filter impurities such as iron in the foam under the action of the magnetic block. During the feeding process, the weighing-tank-discharge valve interlocking system 8 will monitor the amount of foam fed online with the cooperation of the weighing module 9 to ensure the accuracy of feeding. After opening the exhaust regulating valve 13, the foam storage tank 15 will automatically exhaust through the exhaust pipe 23 and the exhaust buffer tank 14 during the feeding process to ensure the normal feeding process.

[0046] After the foam storage tank 15 is filled, the weighing-tank-discharge valve interlock system 8 will automatically stop feeding. Then, after the nitrogen purging regulating valve 7 is opened, nitrogen is injected into the suction line 19 to purge the suction line 19. Then, the stirring motor 16 is started. As the stirring motor 16 works, it will drive the stirring disperser 11 to rotate in the foam storage tank 15. Under the transmission of the toothed sprocket 26 and the toothed chain, it will drive another stirring disperser 11 to rotate in the conical barrel 12, thereby stirring the foam in the foam storage tank 15 and the conical barrel 12 evenly.

[0047] After the foam mixing is complete, open the discharge regulating valve 17 to discharge the foam from the foam storage tank 15 and the conical barrel 12. Once the required amount of foam has been discharged, close the discharge regulating valve 17. After the discharge is complete, open the purging regulating valve 10 and inject nitrogen into the foam storage tank 15 and the conical barrel 12 through the purging pipeline 22 to purge the interior of the foam storage tank 15 and the conical barrel 12.

[0048] 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 control device suitable for automatic feeding, metering, and pretreatment of polyurethane foam, characterized in that: include: Support base (18) and foam storage tank (15), an electronic platform scale (1) is fixedly installed on the upper surface of the support base (18), a storage frame (2) is placed on the upper surface of the electronic platform scale (1), and a fan (5) and several weighing modules (9) are fixedly installed on the upper surface of the support base (18). The lower surface of the foam storage tank (15) is connected to a conical barrel (12), and the outer surface of the conical barrel (12) is fixedly equipped with support legs (25) at equal intervals. The support legs (25) correspond one-to-one with the weighing module (9). One end of the support leg (25) is fixedly connected to the upper surface of the weighing module (9). The lower surface of the conical barrel (12) is fixedly equipped with a discharge regulating valve (17). The upper surface of the support base (18) is fixedly equipped with a controller (6), and the controller (6) is equipped with a weighing-tank-discharge valve interlocking system (8).

2. The control device for automatic feeding, metering, and pretreatment of polyurethane foam according to claim 1, characterized in that, A support frame (20) is fixedly installed on the upper surface of the support base (18). A buffer filter box (4) is fixedly installed at one end of the support frame (20). Magnetic blocks are fixedly installed on both inner walls of the buffer filter box (4). A suction pipe (19) is fixedly installed at the input end of the buffer filter box (4). The output end of the buffer filter box (4) is fixedly connected to the input end of the blower (5). One end of the suction pipe (19) extends into the interior of the storage frame (2).

3. The control device for automatic feeding, metering, and pretreatment of polyurethane foam according to claim 2, characterized in that, A feed regulating valve (3) is fixedly installed in the middle section of the feed line (19), and a nitrogen purging regulating valve (7) is connected to the outer surface of the feed line (19). The nitrogen purging regulating valve (7) is located above the feed regulating valve (3).

4. The control device for automatic feeding, metering, and pretreatment of polyurethane foam according to claim 1, characterized in that, The output end of the blower (5) is fixedly installed with a feed line (21), one end of which is connected to the outer surface of the foam storage tank (15), and the upper surface of the foam storage tank (15) is connected with a purging line (22), and one end of the purging line (22) is fixedly installed with a purging regulating valve (10).

5. The control device for automatic feeding, metering, and pretreatment of polyurethane foam according to claim 1, characterized in that, The outer surface of the foam storage tank (15) is connected to an exhaust pipe (23), one end of which is fixedly installed with an exhaust regulating valve (13), and one end of the exhaust regulating valve (13) is fixedly installed with an exhaust buffer groove (14) through a connecting pipe.

6. The control device for automatic feeding, metering, and pretreatment of polyurethane foam according to claim 1, characterized in that, A stirring disperser (11) is fixedly installed on the inner sidewall of both the foam storage tank (15) and the conical barrel (12). One end of the stirring disperser (11) extends to the outside of both the foam storage tank (15) and the conical barrel (12). A toothed sprocket (26) is fixedly installed on the outer surface of the stirring disperser (11). The toothed sprockets (26) are connected to each other by a toothed chain drive.

7. The control device for automatic feeding, metering, and pretreatment of polyurethane foam according to claim 1, characterized in that, An installation frame (24) is fixedly installed on the outer surface of the foam storage tank (15), and a stirring motor (16) is fixedly installed on the inner wall of the installation frame (24). The output end of the stirring motor (16) is fixedly connected to one end of the stirring disperser (11) inside the foam storage tank (15).

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