Impurity removal and purification device for producing polyurethane resin

Abstract

The utility model belongs to the technical field of impurity removal equipment, and particularly relates to an impurity removal and purification device for producing polyurethane resin, which comprises a support, a hot air cylinder for heating the resin in the impurity removal process is fixedly mounted on the support, and a collecting cylinder for collecting the resin after impurity removal is fixedly mounted in the hot air cylinder. A rotating screen drum is arranged in the collecting drum, a rotating motor is fixed at one end of the hot air drum, a transmission part is arranged between the rotating motor and the screen drum, the screen drum rotates in the hot air drum through the rotating motor so as to remove impurities in the resin, and an impurity discharge port is fixed at one end of the hot air drum; it can be understood that firstly, the resin is subjected to centrifugal impurity removal through rotation of the screen drum, the efficiency can be effectively improved, meanwhile, the hot air drum can heat the collecting drum and the screen drum and improve the fluidity of the resin, then the impurity removal efficiency is improved, secondly, the arranged scraping part can scrape the resin attached to the collecting drum and the screen drum after impurity removal work is completed, and the impurity removal efficiency is improved. And waste is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of impurity removal equipment, and particularly relates to an impurity removal and purification device for producing polyurethane resin. Background Technique

[0002] Waterborne polyurethane resin refers to polyurethane with water as the dispersion medium. Its applications have been continuously expanded from leather finishing agents to coatings, adhesives and other fields, and are gradually occupying the market of solvent-based polyurethane, representing the development direction of coatings and adhesives;

[0003] The purification of polyurethane resin includes steps such as separating impurities in raw materials, purification, and purification. Among them, the separation of impurities is generally carried out by precipitation, filtration and other traditional methods. However, due to the viscosity of polyurethane resin, phenomena such as slow precipitation speed and difficult complete separation will occur, and relying on gravity filtration will also seriously affect the efficiency due to the existence of viscosity;

[0004] To solve the above problems, a device for removing impurities and purifying polyurethane resin is proposed in this application. Content of the Utility Model

[0005] The purpose of the utility model is to provide a device for removing impurities and purifying polyurethane resin, which solves the problems raised in the above background technique.

[0006] To solve the above technical problems, the utility model is realized through the following technical solutions:

[0007] The utility model is a device for removing impurities and purifying polyurethane resin, including a bracket. A hot air cylinder for heating the resin during impurity removal is fixedly installed on the bracket. A collection cylinder for collecting the resin after impurity removal is fixedly installed inside the hot air cylinder. A rotating sieve cylinder is arranged inside the collection cylinder. A rotating motor is fixed at one end of the hot air cylinder. A transmission member is arranged between the rotating motor and the sieve cylinder. The sieve cylinder rotates inside the hot air cylinder through the rotating motor to remove impurities in the resin. A waste discharge port is fixed at one end of the hot air cylinder. A feeding port is arranged at the other end of the hot air cylinder. The feeding port is fixed on the bracket. A scraping member for scraping residual resin is arranged between the collection cylinder and the sieve cylinder.

[0008] Furthermore, spiral blades are fixed inside the hot air cylinder. The outer side of the spiral blades is fixed to the inside of the hot air cylinder, and the inner side of the spiral blades is attached to the outside of the collection cylinder. A spiral air duct is formed between the hot air cylinder and the collection cylinder through the spiral blades.

[0009] Furthermore, an air inlet pipe is fixed on one side of the upper end of the hot air cylinder. The other side of the upper end of the air inlet pipe is fixed with an exhaust pipe. A flow valve is also fixed on the exhaust pipe. The air inlet pipe, the spiral air duct, the exhaust pipe and the flow valve are interconnected.

[0010] Further, a discharge port is fixedly arranged at the bottom of the collection cylinder, and the discharge port is arranged obliquely downward and extends to the side.

[0011] Further, the scraping member includes a scraping ring slidably arranged between the collection cylinder and the sieve cylinder, and a material passing port opened at the bottom of the scraping ring. A connecting frame is arranged on the side of the hot air cylinder. A guide rod is fixed between the connecting frame and the scraping ring. A guide seat is fixed on the side of the hot air cylinder, and one end of the connecting frame penetrates through the guide seat and the collection cylinder.

[0012] Further, a lead screw is fixedly arranged on the connecting frame. A rotating internal thread sleeve is arranged between the guide seat and the impurity discharge port, and the internal thread sleeve is in threaded connection with the lead screw.

[0013] Further, a driving motor is fixed outside the impurity discharge port. A transmission member is arranged between the driving motor and the outside of the internal thread sleeve, and the internal thread sleeve is driven to rotate by the driving motor through the transmission member.

[0014] The utility model has the following beneficial effects:

[0015] The utility model realizes the centrifugal filtration of impurities in the resin through the rotation of the sieve cylinder. The centrifugal force can effectively improve the impurity removal efficiency. At the same time, the upper and lower ends of the sieve cylinder communicate with each other, and continuous operation can be carried out for a long time, further improving the efficiency.

[0016] The utility model can heat the resin during the impurity removal process through the arranged hot air cylinder to improve the fluidity, thereby improving the impurity removal efficiency. At the same time, a scraping member is also arranged between the collection cylinder and the sieve cylinder. The scraping member can scrape the residual resin after the impurity removal work is completed, avoiding waste and ensuring the impurity removal effect of reuse.

[0017] Of course, it is not necessary for any product implementing the utility model to achieve all the above advantages simultaneously. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0019] Figure 1 is the overall external structure schematic diagram of the present utility model;

[0020] Figure 2 is Figure 1 the schematic diagram of the side elevation structure;

[0021] Figure 3 isFigure 1 Schematic structural diagram of the front view with half-section

[0022] Figure 4 Schematic structural diagram of the scraping component in use in the present utility model

[0023] Figure 5 Schematic structural diagram of the separation of the hot air cylinder and the collection cylinder in the present utility model

[0024] Figure 6 Schematic structural diagram of the partial enlargement of the scraping component in the present utility model

[0025] In the drawings, the list of components represented by each reference numeral is as follows:

[0026] In the figure: 1, bracket; 2, hot air cylinder; 21, spiral blade; 22, air inlet pipe; 23, exhaust pipe; 24, flow valve; 3, collection cylinder; 31, discharge port; 4, sieve cylinder; 5, impurity discharge port; 6, feeding port; 7, rotating motor; 8, scraping component; 81, scraping ring; 82, material passing port; 83, connecting frame; 84, guide rod; 85, guide seat; 86, internal thread sleeve; 87, lead screw; 88, driving motor. Detailed implementation manners

[0027] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0028] In the description of the present utility model, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inner", "periphery", etc. indicating the orientation or positional relationship are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present utility model.

[0029] Please refer to Figures 1-6As shown in the figure, the utility model relates to a device for removing impurities and purifying polyurethane resin, which comprises a bracket 1. A hot air cylinder 2 for heating the resin during impurity removal is fixedly installed on the bracket 1. A collecting cylinder 3 for collecting the resin after impurity removal is fixedly installed inside the hot air cylinder 2. A rotating sieve cylinder 4 is arranged inside the collecting cylinder 3. A rotating motor 7 is fixed at one end of the hot air cylinder 2. A transmission member is arranged between the rotating motor 7 and the sieve cylinder 4. The sieve cylinder 4 rotates inside the hot air cylinder 2 through the rotating motor 7 to remove impurities in the resin. A waste discharge port 5 is fixed at one end of the hot air cylinder 2. A feeding port 6 is arranged at the other end of the hot air cylinder 2. The feeding port 6 is fixed on the bracket 1. A scraping member 8 for scraping residual resin is arranged between the collecting cylinder 3 and the sieve cylinder 4.

[0030] Wherein, a spiral blade 21 is fixedly installed on the inner side of the hot air cylinder 2. The outer side of the spiral blade 21 is fixed to the inside of the hot air cylinder 2, and the inner side of the spiral blade 21 is attached to the outside of the collecting cylinder 3. A spiral air duct is formed between the hot air cylinder 2 and the collecting cylinder 3 through the spiral blade 21. An air inlet pipe 22 is fixed on one side of the upper end of the hot air cylinder 2. The other side of the upper end of the air inlet pipe 22 is fixed with an exhaust pipe 23. A flow valve 24 is also fixedly installed on the exhaust pipe 23. The air inlet pipe 22, the spiral air duct, the exhaust pipe 23 and the flow valve 24 are interconnected. In this embodiment, through the provided hot air channel, heating can be carried out during the impurity removal process of the resin, improving the fluidity of the resin, reducing the wall sticking amount and enhancing the impurity removal efficiency.

[0031] Wherein, a discharge port 31 is fixedly arranged at the bottom of the collecting cylinder 3. The discharge port 31 is arranged obliquely downward and extends to the side. In this embodiment, the collecting cylinder 3 and the discharge port 31 are integrally connected, and the resin after impurity removal can be directly collected.

[0032] Wherein, the scraping member 8 comprises a scraping ring 81 slidably arranged between the collecting cylinder 3 and the sieve cylinder 4, and a material passing port 82 opened at the bottom of the scraping ring 81. A connecting frame 83 is arranged on the side of the hot air cylinder 2. A guide rod 84 is fixed between the connecting frame 83 and the scraping ring 81. A guide seat 85 is fixedly arranged on the side of the hot air cylinder 2. The connecting frame 83 penetrates through one end of the guide seat 85 and the collecting cylinder 3. In this embodiment, the connecting frame 83 and the guide rod 84 both play roles in stabilizing and strengthening the structure, ensuring the sliding stability of the scraping ring 81 between the collecting cylinder 3 and the sieve cylinder 4 and ensuring the reliable progress of the scraping work.

[0033] Wherein, a lead screw 87 is fixedly arranged on the connecting frame 83. A rotating internal thread sleeve 86 is arranged between the guide seat 85 and the waste discharge port 5. The internal thread sleeve 86 is threadedly connected with the lead screw 87. In this embodiment, through the cooperation of this thread structure, the scraping ring 81 slides between the collecting cylinder 3 and the sieve cylinder 4, and then the residual resin is scraped off.

[0034] Among them, a driving motor 88 is fixedly arranged outside the impurity discharge port 5. A transmission member is arranged between the driving motor 88 and the outside of the internal thread sleeve 86. After the internal thread sleeve 86 is driven by the driving motor 88 through the transmission member, it rotates. In this embodiment, the transmission member can be a combination such as a gear, etc., to ensure the power transmission between the driving motor 88 and the internal thread sleeve 86.

[0035] It can be understood that first, the resin is centrifugally purified by the rotation of the sieve cylinder 4, which can effectively improve the efficiency. At the same time, the hot air cylinder 2 can also heat the collection cylinder 3 and the sieve cylinder 4 to improve the fluidity of the resin, thereby improving the purification efficiency. Secondly, the provided scraping member 8 can scrape off the resin attached to the collection cylinder 3 and the sieve cylinder 4 after the purification work is completed, avoiding waste.

[0036] A specific application of this embodiment is as follows: First, the resin needs to be melted and then additives, etc. are added to form a flowing liquid. The outside of the air inlet pipe 22 is connected to a hot air blower. The hot air flows along the spiral blade 21 and finally discharges outward from the exhaust pipe 23 and the flow valve 24. Before the hot air blower is started, the flow valve 24 can be opened to the maximum state to quickly discharge the low-temperature air in the channel. When the temperature rises, the flow rate of the flow valve 24 can be appropriately reduced to ensure the utilization effect of heat energy. After the rotation motor 7 is started, it drives the sieve cylinder 4 to rotate in place inside the collection cylinder 3 through a synchronous pulley, a synchronous belt, a gear, etc.;

[0037] The processed liquid resin is added into the sieve cylinder 4 through the feeding port 6. After the sieve cylinder 4 rotates, the resin is thrown into the inside of the collection cylinder 3, and the impurities are filtered out on the inner side of the sieve cylinder 4. As the sieve cylinder 4 rotates, the sundries finally discharge outward through the impurity discharge port 5, and the filtered resin enters the inside of the collection cylinder 3 and flows out through the discharge port 31 for collection. When the purification work is completed, the scraping member 8 is needed to clean between the collection cylinder 3 and the sieve cylinder 4;

[0038] Use of the scraping member 8: The scraping member 8 drives the internal thread sleeve 86 to rotate in place between the guide seat 85 and the impurity discharge port 5 through transmission members such as gears. After the internal thread sleeve 86 rotates, the moving force generated with the lead screw 87 drives the connecting frame 83, the scraping ring 81, and the guide rod 84 to move obliquely upward. At this time, the outside of the scraping ring 81 scrapes the residue inside the collection cylinder 3, and the outside of the scraping ring 81 scrapes the residue outside the sieve cylinder 4. The scraped resin flows out along the scraping ring 81 from the material passing port 82 and is finally collected from 32. The scraping member 8 does one work for one reciprocation.

[0039] In the description of this specification, the descriptions referring to terms such as "one embodiment", "example", "specific example", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0040] The preferred embodiments of the present utility model disclosed above are only used to help illustrate the present utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the present utility model to the specific embodiments described. Obviously, many modifications and variations can be made according to the content of this specification. These embodiments are selected and specifically described in this specification in order to better explain the principles and practical applications of the present utility model, so that those skilled in the relevant technical fields can well understand and utilize the present utility model. The present utility model is only limited by the claims and their full scope and equivalents.

Claims

1. A device for removing impurities and purifying polyurethane resin, comprising a support (1), characterized in that: A hot air cylinder (2) for heating the resin during the impurity removal process is fixedly mounted on the support (1), a collecting cylinder (3) for collecting the impurity-removed resin is fixedly mounted inside the hot air cylinder (2), a rotating screen cylinder (4) is arranged inside the collecting cylinder (3), a rotating motor (7) is fixed at one end of the hot air cylinder (2), a transmission member is arranged between the rotating motor (7) and the screen cylinder (4), the screen cylinder (4) is rotated inside the hot air cylinder (2) by the rotating motor (7) so as to remove impurities in the resin, a discharge port (5) is fixed at one end of the hot air cylinder (2), a loading port (6) is arranged at the other end of the hot air cylinder (2), the loading port (6) is fixed on the support (1), and a scraping component (8) for scraping off residual resin is arranged between the collecting cylinder (3) and the screen cylinder (4).

2. The impurity removal and purification device for producing polyurethane resin according to claim 1, characterized in that: A spiral blade (21) is fixed on the inner side of the hot air cylinder (2); the outer side of the spiral blade (21) is fixed to the inner side of the hot air cylinder (2); the inner side of the spiral blade (21) is in contact with the outer side of the collecting cylinder (3); and the hot air cylinder (2) forms a spiral air duct between the spiral blade (21) and the collecting cylinder (3).

3. The impurity removal and purification device for producing polyurethane resin according to claim 2, characterized in that: An air inlet pipe (22) is fixed on one side of the upper end of the hot air cylinder (2), an exhaust pipe (23) is fixed on the other side of the upper end of the air inlet pipe (22), a flow valve (24) is also fixed on the exhaust pipe (23), and the air inlet pipe (22), the spiral air duct, the exhaust pipe (23) and the flow valve (24) are interconnected.

4. The impurity removal and purification device for producing polyurethane resin according to claim 1, characterized in that: A discharge port (31) is fixedly provided at the bottom of the collecting cylinder (3), and the discharge port (31) is arranged to be inclined downward and extend to the side.

5. The impurity removal and purification device for producing polyurethane resin according to claim 1, characterized in that: The scraping component (8) comprises a scraping ring (81) slidably arranged between the collecting cylinder (3) and the sieve cylinder (4), and a material passing port (82) opened at the bottom of the scraping ring (81); a connecting frame (83) is arranged on the side of the hot air cylinder (2); a guide rod (84) is fixed between the connecting frame (83) and the scraping ring (81); a guide seat (85) is fixed on the side of the hot air cylinder (2); and the connecting frame (83) passes through the guide seat (85) and one end of the collecting cylinder (3).

6. The impurity removal and purification device for producing polyurethane resin according to claim 5, characterized in that: A lead screw (87) is fixedly arranged on the connecting frame (83), a rotatable internal thread sleeve (86) is arranged between the guide seat (85) and the debris discharge port (5), and the internal thread sleeve (86) is threadedly connected to the lead screw (87).

7. The impurity removal and purification device for producing polyurethane resin according to claim 6, characterized in that: A driving motor (88) is fixed to the outside of the impurity discharge port (5), and a transmission member is provided between the driving motor (88) and the outside of the internal thread sleeve (86). The internal thread sleeve (86) is driven by the driving motor (88) to rotate through the transmission member.

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