A purification apparatus for producing polyurethane resin

Abstract

This utility model belongs to the field of chemical engineering technology, specifically a purification device for producing polyurethane resin. It includes a shell with support legs fixedly installed at all four ends of the bottom. A top cover is rotatably installed on the top of the shell. A separation bowl is located inside the shell, and a filter screen is installed on the inner wall of the separation bowl. A fixed bracket is fixedly installed at the center of the bottom of the shell, and a drive motor is installed inside the fixed bracket. By starting the drive motor, the separation bowl rotates, throwing solid particles from the polyurethane resin to the outermost wall of the bowl for interception by the filter screen. Then, by activating the heating element, high temperatures are generated to raise the temperature of the polyurethane resin in the separation bowl, increasing its fluidity and making it easier for impurities to separate from the resin. This accelerates the purification process, improves overall efficiency, and solves the problem of waiting for impurities to settle naturally over long periods.

Description

Technical Field

[0001] This utility model belongs to the field of chemical engineering technology, specifically a purification device for producing polyurethane resin. Background Technology

[0002] The main raw materials for synthesizing polyurethane may contain trace amounts of moisture, solvents, catalyst residues, unreacted monomers, byproducts, metal ions, or other trace impurities. These impurities can react with isocyanates, consume raw materials, change material ratios, reduce reaction efficiency, and lead to unstable resin viscosity, premature gelation, or crystallization, affecting curing speed and final curing effect. Reducing impurities means that the polymer molecular structure is more uniform, and the expected material properties can be achieved more accurately.

[0003] The principle of the purification and decontamination equipment for polyurethane resin production mainly involves two aspects: volatile separation and mechanical filtration. By applying precise volatile separation and mechanical filtration principles, the purification and decontamination equipment for polyurethane resin production can efficiently remove impurities from the produced polyurethane resin, providing strong support for subsequent processing of the polyurethane resin.

[0004] Existing methods for separating internal impurities from polyurethane resins typically involve sedimentation or filtration. However, due to the viscosity of polyurethane resins, their flowability is poor, resulting in slow sedimentation. Gravity filtration also suffers from reduced efficiency due to the viscosity of polyurethane resins. Therefore, this paper proposes a purification device for producing polyurethane resins to address these issues. Utility Model Content

[0005] To overcome the shortcomings of existing technologies and address the problems of existing equipment, this utility model proposes a purification device for producing polyurethane resin.

[0006] The technical solution adopted by this utility model to solve its technical problem is a purification device for producing polyurethane resin, including a shell, with support legs fixedly installed at all four ends of the bottom of the shell, a top cover rotatably installed on the top of the shell, a separation bowl inside the shell, a filter screen installed on the inner wall of the separation bowl, a fixed bracket fixedly installed at the center of the bottom of the shell, a drive motor inside the fixed bracket, a sealed rotating shaft installed at the output end of the drive motor, the sealed rotating shaft fixedly installed outside the shell, and the rotating shaft of the sealed rotating shaft fixedly installed at the center of the bottom of the separation bowl, a heating tube fixedly installed at the center of the bottom of the top cover, and a metal shielding device outside the heating tube. The protective sleeve has bolts rotatably installed at all four ends of its interior. The threaded ends of the bolts are threaded inside the top cover. By starting the drive motor, the separation bowl is rotated, which in turn causes the polyurethane resin inside to rotate. At this time, the solid particles inside are thrown to the outermost wall of the separation bowl and intercepted by the filter screen, while the polyurethane resin is thrown out of the separation bowl. Then, by starting the heating tube, high temperature is generated to heat the polyurethane resin in the separation bowl, which increases the fluidity of the polyurethane resin and makes it easier for impurities to separate from the resin. This can speed up the impurity removal process, improve the overall working efficiency, and solve the problem of waiting for impurities to settle naturally for a long time. After heating, a better separation effect between impurities and resin can be achieved in a shorter time.

[0007] Preferably, a conveying pipe is installed on one side of the inner side of the outer shell, and a filter box is fixedly installed on the outer side of the conveying pipe away from the outer shell. The filter box is equipped with multiple filter plates. Through the multiple filter plates provided inside the filter box, which are coarse filter plates, medium filter plates and fine filter plates, the polyurethane resin after filtration reaches a high purity, meets the high quality requirements of secondary filtration, and achieves the effect of step-by-step filtration.

[0008] Preferably, the housing has an internal mounting groove, and sealing gaskets are fixedly installed on both sides of the inner wall of the mounting groove inside the top cover. The outer side of the sealing gasket is tightly attached to the outer side of the housing. This tight fit enhances the sealing effect, reduces gaps caused by poor sealing, and further ensures the stability of the internal environment of the device.

[0009] Preferably, a limiting plate is rotatably installed on the bottom of the inner wall of the outer shell. The limiting plate is a T-shaped plate. A slot is opened at the bottom of the separation bowl. The outer side of the limiting plate is rotatably installed inside the slot opened inside the separation bowl. The connection between the limiting plate and the bottom of the separation bowl effectively avoids instability such as shaking and displacement during centrifugal separation and other operations, improves the reliability and stability of the device operation, and thus ensures the accuracy and efficiency of the separation work.

[0010] Preferably, the heating element and the drive motor are electrically connected to an external control center, which is used to start and stop them. By connecting the control center to multiple electronic devices, the operation process can be greatly simplified and the operation efficiency can be improved without having to operate each device independently.

[0011] Preferably, a buffer pad is fixedly installed at the bottom of one end of each of the multiple support legs. The buffer pad is made of rubber and can effectively absorb and disperse impact force, reduce damage to the equipment caused by vibration or collision, and protect the internal components of the equipment from damage.

[0012] The advantages of this utility model are:

[0013] This invention uses a drive motor to rotate a separation bowl, which in turn rotates the polyurethane resin inside. Solid particles are thrown to the outermost wall of the bowl and intercepted by a filter, while the polyurethane resin is ejected from the bowl. A heating element is then activated to generate high temperatures, increasing the resin's fluidity and making it easier for impurities to separate from the resin. This accelerates the impurity removal process, improves overall efficiency, and eliminates the need for prolonged waiting for impurities to settle naturally. Heating allows for a faster separation of impurities from the resin. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the external structure of a polyurethane resin purification device.

[0016] Figure 2 This is a schematic diagram of the internal structure of a polyurethane resin purification device.

[0017] Figure 3 This is a schematic diagram of the bottom structure of a polyurethane resin purification device.

[0018] Figure 4 This is a schematic diagram of the internal structure of the drive mechanism;

[0019] Figure 5 This is a schematic diagram of the unfolded structure of the heating mechanism;

[0020] Figure 6 This is a schematic diagram of the internal structure of the filtration mechanism;

[0021] In the diagram: 1. Outer shell; 2. Top cover; 3. Support leg; 4. Separation bowl; 5. Filter screen; 6. Heating element; 7. Metal protective sleeve; 8. Bolt; 9. Fixing bracket; 10. Drive motor; 11. Sealing shaft; 12. Limiting plate; 13. Conveying pipe; 14. Filter box; 15. Filter plate; 16. Mounting groove; 17. Sealing gasket; 18. Buffer pad. Detailed Implementation

[0022] 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 of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0023] Please see Figure 1-6 As shown, a purification device for producing polyurethane resin includes a housing 1. Support legs 3 are fixedly installed at all four ends of the bottom of the housing 1. A top cover 2 is rotatably installed on the top of the housing 1. A separation bowl 4 is located inside the housing 1, and a filter screen 5 is installed on the inner wall of the separation bowl 4. A fixed bracket 9 is fixedly installed at the center of the bottom of the housing 1. A drive motor 10 is located inside the fixed bracket 9. A sealing shaft 11 is installed at the output end of the drive motor 10. The sealing shaft 11 is externally fixedly installed inside the housing 1, and its rotation shaft is fixedly installed at the center of the bottom of the separation bowl 4. A heating tube 6 is fixedly installed at the center of the bottom of the top cover 2. A metal protective sleeve 7 is provided outside the heating tube 6. Bolts 8 are rotatably installed at all four ends of the metal protective sleeve 7. The threaded ends of the bolts 8 are threaded onto... Inside the top cover 2; during operation, in order to more efficiently separate internal impurities from the polyurethane resin, the drive motor 10 is started to drive the sealing shaft 11 to rotate. When the sealing shaft 11 rotates, it will drive the separation bowl 4, which is fixedly installed with its rotating shaft, to rotate. The rotation of the separation bowl 4 will drive the polyurethane resin inside to rotate. At this time, the solid particles inside are thrown to the outermost wall of the separation bowl 4 and intercepted by the filter screen 5, while the polyurethane resin will be thrown out of the separation bowl 4. Then, the heating tube 6 is started to generate high temperature to heat the polyurethane resin in the separation bowl 4, which increases the fluidity of the polyurethane resin and makes it easier for impurities to separate from the resin. This can speed up the impurity removal process, improve the overall working efficiency, and solve the problem of waiting for impurities to settle naturally for a long time. After heating, the impurities can achieve a better separation effect from the resin in a shorter time.

[0024] A conveying pipe 13 is installed on one side of the inner shell 1. A filter box 14 is fixedly installed on the outer side of the conveying pipe 13 away from the outer shell 1. The filter box 14 is equipped with multiple filter plates 15. During operation, in order to perform secondary filtration on the separated polyurethane resin, the multiple filter plates 15 inside the filter box 14 are respectively a coarse filter plate, a medium filter plate, and a fine filter plate. The coarse filter plate enables the filtered polyurethane resin to achieve a high purity, meet the high-quality requirements of secondary filtration, and achieve the effect of step-by-step filtration.

[0025] An installation groove 16 is provided inside the outer casing 1. Sealing gaskets 17 are fixedly installed on both sides of the inner wall of the installation groove 16 inside the top cover 2. The outer side of the sealing gasket 17 is tightly attached to the outer side of the outer casing 1. During operation, in order to ensure good airtightness of the device and prevent internal materials from being exposed, the sealing gasket 17 is tightly attached to the outer side of the outer casing 1. This tight fit enhances the sealing effect, makes the connection between the sealing gasket 17 and the outer casing 1 more stable, reduces the gaps caused by poor sealing, further ensures the stability of the internal environment of the device, and prevents various malfunctions caused by sealing problems.

[0026] A limiting plate 12 is rotatably installed on the bottom of the inner wall of the outer shell 1. The limiting plate 12 is a T-shaped plate. A slot is opened at the bottom of the separation bowl 4. The outer side of the limiting plate 12 is rotatably installed inside the slot opened inside the separation bowl 4. During operation, in order to limit the separation bowl 4 during rotation and make it more stable, the connection between the limiting plate 12 and the bottom of the separation bowl 4 effectively avoids instability such as shaking and displacement during centrifugal separation and other operations, improves the reliability and stability of the device operation, and thus ensures the accuracy and efficiency of the separation work.

[0027] The heating element 6 and the drive motor 10 are both electrically connected to an external control center, which is used to start and stop them. During operation, in order to more conveniently control the start and stop of multiple electronic devices, the control center is connected to multiple electronic devices so that the operator can easily control the start and stop of the heating element 6 and the drive motor 10 by operating from the control center. There is no need to operate each device independently, which greatly simplifies the operation process and improves the operation efficiency.

[0028] Each of the multiple support legs 3 has a buffer pad 18 fixedly installed at one end of its bottom. The buffer pad 18 is made of rubber. During operation, in order to make the device more stable during use, the rubber buffer pad 18 has good elasticity and flexibility. When the equipment vibrates or is impacted by external forces, the buffer pad 18 can effectively absorb and disperse the impact force, reduce the damage caused by vibration or collision, and protect the internal parts of the equipment from damage.

[0029] Working principle: Existing polyurethane resins typically separate internal impurities through sedimentation or filtration. However, due to the viscosity of polyurethane resin, its flowability is poor, resulting in slow sedimentation. Gravity filtration also suffers from reduced efficiency due to the resin's viscosity. First, the top cover 2 is opened, and the polyurethane resin to be purified is poured into the separation bowl 4. Then, the top cover 2 is closed, and the drive motor 10 is started. The rotation of the drive motor 10 drives the sealing shaft 11, which in turn rotates the separation bowl 4, which is fixedly mounted to its shaft. The rotation of the separation bowl 4 then... The polyurethane resin inside the separating bowl 4 rotates, and during this rotation, the polyurethane resin is thrown towards the bowl wall under centrifugal force, forming a rotating liquid ring. At this time, the solid particles inside are thrown to the outermost wall of the separating bowl 4 and intercepted by the filter screen 5, while the polyurethane resin is thrown out of the separating bowl 4. When it is necessary to heat the polyurethane resin to increase its fluidity during the impurity removal process, the heating tube 6 is activated to generate high temperature, which raises the temperature of the polyurethane resin in the separating bowl 4, increasing the fluidity of the polyurethane resin and making it easier for impurities to separate from the resin. This accelerates the impurity removal process and improves the overall working efficiency. To address the issue of prolonged waiting for impurities to settle naturally, heating allows for faster separation of impurities from the resin. A metal protective sleeve 7 outside the heating tube 6 separates the polyurethane resin from the heating tube 6, preventing it from adhering to the outer surface and affecting heating efficiency. After separation, the polyurethane resin flows into the filter box 14 through the delivery pipe 13. Multiple filter plates 15 inside the filter box 14 then perform staged filtration, consisting of a coarse filter, a medium filter, and a fine filter. The coarse filter initially intercepts larger particles, such as polyurethane resin. The coarse filter removes clumps and larger solid foreign objects, blocking most of the visible large particles and reducing the pressure on subsequent filters. The medium filter further filters medium-sized impurities that remain after the coarse filter, such as some small agglomerates, effectively reducing their particle size. The fine filter, as the final stage of filtration, performs fine filtration on the polyurethane resin, removing extremely fine impurities and ensuring that the filtered polyurethane resin reaches a high purity, meeting the high-quality requirements of secondary filtration and achieving the effect of step-by-step filtration. Finally, the polyurethane resin that has completed the filtration of internal impurities is discharged through the filter box 14.

[0030] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0031] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A decontamination apparatus for producing a polyurethane resin, characterized by: The device includes an outer shell (1), with support legs (3) fixedly installed at all four ends of the bottom of the outer shell (1), a top cover (2) rotatably installed on the top of the outer shell (1), a separation bowl (4) provided inside the outer shell (1), a filter screen (5) installed on the inner wall of the separation bowl (4), a fixed bracket (9) fixedly installed at the center of the bottom of the outer shell (1), a drive motor (10) provided inside the fixed bracket (9), a sealing shaft (11) installed at the output end of the drive motor (10), the sealing shaft (11) being fixedly installed outside the outer shell (1) and the rotating shaft of the sealing shaft (11) being fixedly installed at the center of the bottom of the separation bowl (4), a heating tube (6) fixedly installed at the center of the bottom of the top cover (2), a metal protective sleeve (7) provided outside the heating tube (6), bolts (8) being rotatably installed at all four ends of the inside of the metal protective sleeve (7), and the threaded end of the bolt (8) being threaded inside the top cover (2).

2. A device for the removal of impurities in the production of polyurethane resins according to claim 1, characterized in that: A conveying pipe (13) is installed on one side of the inner side of the outer shell (1). A filter box (14) is fixedly installed on the outer side of the conveying pipe (13) away from the outer shell (1). Multiple filter plates (15) are provided inside the filter box (14).

3. A device for the removal of impurities in the production of polyurethane resins according to claim 1, characterized in that: The housing (1) has an installation groove (16) inside. Sealing gaskets (17) are fixedly installed on both sides of the inner wall of the installation groove (16) inside the top cover (2). The outer side of the sealing gasket (17) is tightly attached to the outer side of the housing (1).

4. A device for the removal of impurities in the production of polyurethane resins according to claim 1, characterized in that: A limiting plate (12) is rotatably installed on the bottom of the inner wall of the outer shell (1). The limiting plate (12) is a T-shaped plate. A slot is opened at the bottom of the separation bowl (4). The outer side of the limiting plate (12) is rotatably installed inside the slot opened inside the separation bowl (4).

5. A device for the removal of impurities in the production of polyurethane resins according to claim 1, characterized in that: The heating tube (6) and the drive motor (10) are both electrically connected to an external control center, which is used to start and stop them.

6. A device for the removal of impurities in the production of polyurethane resins according to claim 1, characterized in that: Each of the multiple support legs (3) has a buffer pad (18) fixedly installed at one end of its bottom. The buffer pad (18) is made of rubber.

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