Blanking device for polyurethane mixing kettle

Abstract

The utility model discloses a blanking device for a polyurethane mixing kettle, which comprises a stirring rod, a booster pump and a control panel, and is characterized in that stirring blades and a support rod are welded on the outer wall of the stirring rod, flushing holes are formed in the surfaces of the stirring rod and the stirring blades, a flushing pipe is mounted at the water outlet end of the booster pump, and the control panel is mounted on the control panel. And one end of the flushing pipe is connected with one end of a stirring rod through a high-speed rotating connector, a one-way valve and a gear are fixedly installed on the stirring rod, and a cavity is formed in the surface of the supporting rod. According to the device disclosed by the utility model, the scraping plate is arranged, and the scraping plate and the inner wall of the reaction kettle always keep a good elastic attaching effect, so that on one hand, the scraping plate can be always attached to the inner wall of the reaction kettle, the scraping plate can rotate to scrape polyurethane adhered to the inner wall of the reaction kettle, the blanking effect is improved, and the blanking is cleaner and more thorough; on the other hand, gaps generated between the scrapers and the inner wall of the reaction kettle after the scrapers are abraded are avoided, and the scraping effect on polyurethane on the inner wall of the reaction kettle is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of polyurethane production, in particular to a feeding device for a polyurethane mixing kettle. Background Art

[0002] Polyurethane is one of the synthetic resins with excellent comprehensive performance. Polyurethane resin is generally formed by the reaction of polyisocyanate and polyol containing active hydrogen atoms and groups. The reaction between the two is a reaction between solutions. Whether the reaction kettle can be fully stirred and evenly stirred has a great influence on the degree of reaction. In the existing industrial reactor, the polyurethane needs to be discharged from the reactor after the reaction is completed. At this time, a feeding device is needed to ensure the feeding effect and efficiency.

[0003] The existing technology has the following problems:

[0004] After extensive searching, it was found that Chinese Patent Publication No.: CN213791578U discloses a mixing and stirring kettle for polyurethane production, including a kettle body, the inner wall of the kettle body is fixedly connected to a fixing frame, and the fixing frames are two parallel to each other, and the two fixing frames are fixedly connected to a fixing pipe on opposite sides thereof, a triangular bracket is fixedly connected to the inner center position of the kettle body, and the top of the triangular bracket is rotatably connected to a main shaft, a stirring rod is rotatably connected between the fixing pipe and the kettle body, and the stirring rods are four symmetrical to each other, and stirring blades are fixedly connected to the outer surfaces of the four stirring rods, and one end of the stirring rod is fixedly connected to a second bevel gear, and the second bevel gear is located inside the fixed tube, in the patent, the first bevel gear can simultaneously drive the second bevel gear to rotate, the second bevel gear can drive the stirring rod to rotate at a fixed position, and the stirring rod can drive the stirring blade to rotate, so that a plurality of stirring blades stir the liquid inside the kettle body, the structure is simple, and the stirring can be uniform and the reaction can be sufficient, thereby improving the quality of polyurethane production.

[0005] However, the above patent still has problems that need to be improved during actual use. The most obvious one is that when the polyurethane is discharged from the reactor after mixing, the polyurethane is likely to remain in the reactor, and there is a problem that the feeding effect and efficiency need to be improved to a certain extent.

[0006] Therefore, we proposed a feeding device for the polyurethane mixing kettle to solve the above-mentioned drawbacks. Utility Model Content

[0007] The utility model aims to provide a feeding device for a polyurethane mixing kettle in order to solve the shortcomings in the prior art.

[0008] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a feeding device for a polyurethane mixing kettle, comprising a stirring rod, a booster pump and a control panel, characterized in that a stirring blade and a support rod are welded to the outer wall of the stirring rod, flushing holes are provided on the surfaces of the stirring rod and the stirring blade, a flushing pipe is installed at the water outlet end of the booster pump, and one end of the flushing pipe is connected to one end of the stirring rod through a high-speed rotating joint, a one-way valve and a gear are fixedly installed on the stirring rod, a chamber is provided on the surface of the support rod, and a guide rod is provided through the interior of the chamber, one end of the guide rod extends to the outside of the chamber and a scraper is installed, and the scraper is elastically fitted with the inner wall of the reactor, a limit block is installed on the other end of the guide rod, and a spring is provided on the outer side of the guide rod between the limit block and the inner wall of the chamber.

[0009] Preferably, the control panel is electrically connected to the boost pump via a wire.

[0010] Preferably, there are multiple scrapers, and the material of the multiple scrapers is aluminum alloy, and the multiple scrapers are used in conjunction with the reaction kettle.

[0011] Preferably, the flushing holes are provided in plurality, and the plurality of flushing holes are distributed in a circular array on the surface of the stirring rod and the stirring blade.

[0012] Preferably, the stirring rod and the stirring blade are both made of a hollow aluminum alloy tube.

[0013] Preferably, the stirring blades are provided in plurality, and the plurality of stirring blades are distributed in a circular array on the outer wall of the stirring rod.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. In the utility model, by arranging a scraper, the scraper and the inner wall of the reactor always maintain a good elastic fitting effect. On the one hand, the scraper can always fit with the inner wall of the reactor, so that the rotation of the scraper can scrape off the polyurethane adhered to the inner wall of the reactor, thereby improving the material discharge effect and making the material discharge cleaner and more thorough. On the other hand, it also avoids the generation of a gap between the scraper and the inner wall of the reactor after the scraper is worn, thereby ensuring the scraping effect of the polyurethane on the inner wall of the reactor.

[0016] 2. In the utility model, a booster pump is provided, and the booster pump sends the pressurized water to the flushing pipe, and then enters the hollow stirring rod and stirring blades, and is sprayed out from the flushing hole, so as to flush the inner wall of the reactor, and polyurethane is not easily left in the reactor, thereby further improving the unloading effect and efficiency of the reactor. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 This is a schematic diagram of the structure of the feeding device for the polyurethane mixing kettle proposed by the utility model;

[0019] Figure 2 for Figure 1 A partial enlarged schematic diagram of

[0020] Figure 3 The utility model is a schematic diagram of the external structure of the feeding device for the polyurethane mixing kettle.

[0021] Legend:

[0022] 1. Stirring rod; 2. One-way valve; 3. Gear; 4. High-speed rotary joint; 5. Booster pump; 6. Flushing pipe; 7. Stirring blade; 8. Flushing hole; 9. Control panel; 10. Support rod; 11. Chamber; 12. Guide rod; 13. Limit block; 14. Spring; 15. Scraper. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] In the description of the present utility model, it should be noted that the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present utility model; the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance; in addition, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a communication between the two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0025] Please refer to Figure 1-3 The feeding device for a polyurethane mixing kettle comprises a stirring rod 1, a booster pump 5 and a control panel 9, wherein a stirring blade 7 and a support rod 10 are welded to the outer wall of the stirring rod 1, a flushing hole 8 is provided on the surface of the stirring rod 1 and the stirring blade 7, a flushing pipe 6 is installed at the water outlet end of the booster pump 5, and one end of the flushing pipe 6 is connected to one end of the stirring rod 1 through a high-speed rotating joint 4, a one-way valve 2 and a gear 3 are fixedly installed on the stirring rod 1, a chamber 11 is provided on the surface of the support rod 10, and a guide rod 12 is provided through the inside of the chamber 11, one end of the guide rod 12 extends to the outside of the chamber 11 and a scraper 15 is installed, and the scraper 15 is elastically fitted with the inner wall of the reactor, a limit block 13 is installed on the other end of the guide rod 12, and a sleeve is provided on the outer side of the guide rod 12 between the limit block 13 and the inner wall of the chamber 11 Spring 14, when in use, installs the stirring rod 1 and the scraper 15 in the reactor, and the scraper 15 always maintains a good elastic fit with the inner wall of the reactor. On the one hand, the scraper 15 can always fit with the inner wall of the reactor, so that the scraper 15 can rotate to scrape off the polyurethane adhered to the inner wall of the reactor, thereby improving the material discharge effect and making the material discharge cleaner and more thorough. On the other hand, it also avoids the generation of gaps between the scraper 15 and the inner wall of the reactor after wear, thereby ensuring the scraping effect of the polyurethane on the inner wall of the reactor. After the material discharge is completed, the booster pump 5 works to pump the pressurized water into the flushing pipe 6, and then enters the hollow stirring rod 1 and the stirring blade 7, and is sprayed out from the flushing hole 8, which can flush the inner wall of the reactor. It is not easy for polyurethane to remain in the reactor, further improving the material discharge effect and efficiency of the reactor.

[0026] In this embodiment: the control panel 9 is electrically connected to the booster pump 5 via a wire.

[0027] Specifically, it is a common circuit connection structure, which will not be described in detail here.

[0028] In this embodiment, a plurality of scrapers 15 are provided, and the material of the plurality of scrapers 15 is aluminum alloy, and the plurality of scrapers 15 are used in conjunction with the reaction kettle.

[0029] Specifically, while ensuring its own strength, it reduces its own weight and extends its service life.

[0030] In this embodiment, a plurality of flushing holes 8 are provided, and the plurality of flushing holes 8 are distributed in a circular array on the surface of the stirring rod 1 and the stirring blade 7 .

[0031] Specifically, the flushing effect and efficiency of the reactor are improved.

[0032] In this embodiment, the stirring rod 1 and the stirring blade 7 are both made of hollow aluminum alloy tubes.

[0033] Specifically, water is allowed to flow into the stirring rod 1 and the stirring blade 7 .

[0034] In this embodiment, a plurality of stirring blades 7 are provided, and the plurality of stirring blades 7 are distributed in a circular array on the outer wall of the stirring rod 1 .

[0035] Specifically, the mixing effect and efficiency of the polyurethane in the reactor are ensured.

[0036] In this embodiment: the controller is an existing structure, and the control circuit can be implemented by simple programming by technicians in this field. It belongs to the common knowledge in this field. It is only used without modification, so the control method and circuit connection are not described in detail.

[0037] Working principle: When in use, the stirring rod 1 and the scraper 15 are installed in the reactor, and the scraper 15 always maintains a good elastic fit with the inner wall of the reactor. On the one hand, the scraper 15 can always fit with the inner wall of the reactor, so that the scraper 15 can rotate to scrape off the polyurethane adhered to the inner wall of the reactor, thereby improving the material discharge effect and making the material discharge cleaner and more thorough. On the other hand, it also avoids the generation of gaps between the scraper 15 and the inner wall of the reactor after wear, thereby ensuring the scraping effect of the polyurethane on the inner wall of the reactor. After the material discharge is completed, the booster pump 5 works to pump the pressurized water into the flushing pipe 6, and then enters the hollow stirring rod 1 and the stirring blade 7, and is sprayed out from the flushing hole 8, which can flush the inner wall of the reactor. It is not easy for polyurethane to remain in the reactor, further improving the material discharge effect and efficiency of the reactor.

[0038] It should be noted that the model and specifications of the booster pump 5 need to be selected and determined according to the actual specifications of the device, and the specific selection and calculation method adopts the existing technology in this field, so it will not be described in detail.

[0039] The power supply and principle of the boost pump 5 are clear to those skilled in the art and will not be described in detail here.

[0040] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A feeding device for a polyurethane mixing kettle, comprising a stirring rod (1), a booster pump (5) and a control panel (9), characterized in that: The outer wall of the stirring rod (1) is welded with a stirring blade (7) and a support rod (10), and the surfaces of the stirring rod (1) and the stirring blade (7) are both provided with a flushing hole (8). A flushing pipe (6) is installed at the water outlet end of the booster pump (5), and one end of the flushing pipe (6) is connected to one end of the stirring rod (1) through a high-speed rotating joint (4). A one-way valve (2) and a gear (3) are fixedly installed on the stirring rod (1). A chamber (11) is opened on the surface of the support rod (10), and a guide rod (12) is arranged through the inside of the chamber (11). A scraper (15) is installed at one end of the guide rod (12) extending to the outside of the chamber (11), and the scraper (15) is elastically fitted with the inner wall of the reactor. A limit block (13) is installed at the other end of the guide rod (12), and a spring (14) is sleeved on the outer side of the guide rod (12) between the limit block (13) and the inner wall of the chamber (11).

2. The feeding device for the polyurethane mixing kettle according to claim 1, characterized in that: The control panel (9) is electrically connected to the booster pump (5) via a wire.

3. The feeding device for the polyurethane mixing kettle according to claim 1, characterized in that: A plurality of scrapers (15) are provided, and the material of the plurality of scrapers (15) is all aluminum alloy, and the plurality of scrapers (15) are used in conjunction with the reaction kettle.

4. The feeding device for the polyurethane mixing kettle according to claim 1, characterized in that: A plurality of flushing holes (8) are provided, and the plurality of flushing holes (8) are distributed in a circular array on the surface of the stirring rod (1) and the stirring blade (7).

5. The feeding device for the polyurethane mixing kettle according to claim 1, characterized in that: The stirring rod (1) and the stirring blade (7) are both made of a hollow aluminum alloy tube.

6. The feeding device for the polyurethane mixing kettle according to claim 1, characterized in that: The stirring blades (7) are provided in plurality, and the plurality of stirring blades (7) are distributed in a circular array on the outer wall of the stirring rod (1).

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