Waterborne polyurethane reaction kettle

Abstract

The utility model relates to the technical field of waterborne polyurethane production, and discloses a waterborne polyurethane reaction kettle which comprises a kettle body and a scraping plate, supporting legs are arranged at the front end and the rear end of the left side and the right side of the bottom of the kettle body, a feeding pipe is arranged on the right side of the top of the kettle body, and one end of the feeding pipe extends into the kettle body. A first electromagnetic valve located above the kettle body is arranged on the outer side of the feeding pipe, a discharging pipe with one end extending to the bottom of the kettle body is arranged on the inner bottom wall of the kettle body, and a second electromagnetic valve located below the kettle body is arranged on the outer side of the discharging pipe. According to the waterborne polyurethane reaction kettle, the worm and the worm gear are arranged for primary speed reduction, then the driving gear, namely the pinion, drives the driven gear, namely the bull gear to rotate so as to further reduce the speed, and finally, the rotating cylinder and the scraping plate are driven to integrally and slowly rotate, so that the purpose of reducing the speed of the scraping plate is achieved; therefore, the inner wall of the kettle body is prevented from being damaged due to high-speed friction.

Description

Technical Field

[0001] The utility model relates to the technical field of waterborne polyurethane production, in particular to a waterborne polyurethane reaction kettle. Background Art

[0002] Waterborne polyurethane resin is a uniform emulsion formed by dispersing polyurethane in water. It has the advantages of being non-flammable, having little odor, being non-polluting to the environment, being energy-saving, and being easy to operate and process. It is widely used as an adhesive and a coating. When processing waterborne polyurethane, a stirring kettle is required to stir the raw materials to disperse the polyurethane in water. Since the viscosity of the waterborne polyurethane emulsion is relatively large, usually after the materials are discharged, some residual materials are still adhered to the inner wall of the kettle body. It is troublesome to clean up the residual materials adhered to the inner wall of the kettle body. In order to avoid residual materials sticking to the inner wall of the kettle body, some manufacturers connect a scraper to the stirring shaft. The scraper contacts the inner wall of the kettle body and rotates synchronously with the stirring shaft. During the rotation of the stirring shaft, the scraper cleans the inner wall of the kettle body in real time. However, in actual use of this kettle body, since the rotation speed of the stirring shaft is extremely high, the scraper will also rotate at an extremely high speed, which will cause high-speed friction between the scraper and the inner wall of the kettle body, and then damage the inner wall of the kettle body. Therefore, a waterborne polyurethane reactor is proposed. Utility Model Content

[0003] 1. Technical issues to be resolved

[0004] In view of the shortcomings of the prior art, the utility model provides a water-based polyurethane reaction kettle, which has the advantages of being able to reduce the speed of the scraper, etc., and solves the problem that in actual use of the kettle, due to the extremely high rotation speed of the stirring shaft, the scraper will also rotate at a very high speed, which will cause high-speed friction between the scraper and the inner wall of the kettle body, thereby causing damage to the inner wall of the kettle body.

[0005] (II) Technical solution

[0006] In order to achieve the above-mentioned purpose of slowing down the scraper, the utility model provides the following technical solutions: a water-based polyurethane reaction kettle, comprising a kettle body and a scraper, support feet are arranged at the front and rear ends of the left and right sides of the bottom of the kettle body, a feed pipe with one end extending to the inside thereof is arranged on the right side of the top of the kettle body, a first solenoid valve located above the kettle body is arranged on the outside of the feed pipe, a discharge pipe with one end extending to the bottom thereof is arranged on the inner bottom wall of the kettle body, a second solenoid valve located below the kettle body is arranged on the outside of the discharge pipe, an L-shaped block located on the left side of the feed pipe is arranged on the top of the kettle body, a stirring assembly with one end extending to the top thereof and the other end extending to the inside of the kettle body is arranged on the left side of the L-shaped block, a fixed cylinder located on the outside of the feed pipe is arranged on the inner top wall of the kettle body, a rotating cylinder is arranged on the outside of the fixed cylinder, and the A connecting block is provided at the bottom of the left side of the rotating cylinder, the scraper is provided on the left side of the connecting block and the left side of the scraper is fitted with the left side of the inner wall of the kettle body, a shell located on the left side of the L-shaped block is provided on the top of the kettle body, a transmission shaft with one end movably connected to the top of the kettle body is provided on the right side of the inner top wall of the shell, a first transmission assembly with one end fixedly connected to the top of the kettle body and the other end extending to the right side of the shell and fixedly connected to the outside of the stirring assembly is provided on the outside of the transmission shaft, a rotating shaft with one end extending to the inside of the kettle body is provided on the left side of the inner top wall of the shell, a second transmission assembly with one end fixedly connected to the outside of the rotating shaft is provided on the outside of the transmission shaft, a driving gear located inside the kettle body and on the left side of the rotating cylinder is provided on the outside of the rotating cylinder, and a driven gear located above the connecting block and meshing with the driving gear at one end is provided on the outside of the rotating cylinder.

[0007] Preferably, the stirring assembly includes a drive motor, a drive motor is fixedly installed on the top of the L-shaped block, a limit block is fixedly installed on the left side of the L-shaped block, the output shaft of the drive motor extends to the bottom of the L-shaped block and is fixedly installed with a stirring shaft with one end passing through the limit block and extending to the inside of the kettle body, and six stirring blades are fixedly installed on the left and right sides of the stirring shaft and are located inside the kettle body.

[0008] Preferably, the first transmission assembly includes a fixed block, a fixed block located inside the shell and on the left side of the transmission shaft is fixedly installed on the top of the kettle body, a worm is movably installed on the right side of the shell, one end of which extends into the interior of the shell and is movably connected to the right side of the fixed block, a worm wheel having one end meshing with the worm is fixedly installed on the outside of the transmission shaft, a driven bevel gear is fixedly installed on the right side of the worm, and a driving bevel gear located between the kettle body and the limit block and one end of which meshes with the driven bevel gear is fixedly installed on the outside of the stirring shaft.

[0009] Preferably, the second transmission assembly includes a first pulley, a first pulley located above the worm gear is fixedly mounted on the outer side of the transmission shaft, a second pulley located above the kettle body is fixedly mounted on the outer side of the rotating shaft, and a belt is connected between the first pulley and the second pulley.

[0010] Preferably, a first bearing is fixedly mounted on the outer side of the fixed cylinder, and the rotating cylinder is rotatably connected to the outer side of the fixed cylinder via the first bearing.

[0011] Preferably, a second bearing is fixedly mounted on the right side of the inner top wall of the shell and the left side of the top of the kettle body, and the transmission shaft is rotatably connected to the shell and the kettle body respectively through the second bearing.

[0012] (III) Beneficial effects

[0013] Compared with the prior art, the utility model provides a waterborne polyurethane reactor having the following

[0014] Beneficial effects:

[0015] The waterborne polyurethane reactor is provided with a first transmission component. When the stirring shaft rotates, it also drives the driving bevel gear to rotate, and then drives the worm to rotate through the driven bevel gear, and then the worm wheel drives the transmission shaft to rotate, so as to perform the initial speed reduction through the worm and the worm wheel. During the rotation of the transmission shaft, the first pulley is driven to rotate, and then the rotating shaft and the driving gear are driven to rotate through the belt and the second pulley, and then the driven gear drives the rotating cylinder to rotate, and the small gear of the driving gear drives the large gear of the driven gear to rotate, so as to further reduce the speed, and finally drive the rotating cylinder and the scraper to rotate slowly as a whole, thereby achieving the purpose of reducing the speed of the scraper, and thus avoiding damage to the inner wall of the reactor body due to high-speed friction. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 For this utility model Figure 1 Enlarged view of point A in the middle;

[0018] Figure 3 It is a partial schematic diagram of a top view and section of a fixed cylinder of the utility model.

[0019] In the figure: 1 kettle body, 2 supporting feet, 3 feeding pipe, 4 first solenoid valve, 5 discharging pipe, 6 second solenoid valve, 7 L-shaped block, 8 stirring assembly, 81 driving motor, 82 limiting block, 83 stirring shaft, 84 stirring blade, 9 fixed cylinder, 10 rotating cylinder, 11 connecting block, 12 scraper, 13 shell, 14 transmission shaft, 15 first transmission assembly, 151 fixed block, 152 worm, 153 worm wheel, 154 driven bevel gear, 155 driving bevel gear, 16 rotating shaft, 17 second transmission assembly, 171 first pulley, 172 second pulley, 173 belt, 18 driving gear, 19 driven gear. DETAILED DESCRIPTION

[0020] 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.

[0021] See also Figure 1-3 The utility model provides a technical solution: a water-based polyurethane reaction kettle, comprising a kettle body 1 and a scraper 12, support feet 2 are fixedly installed at the front and rear ends of the left and right sides of the bottom of the kettle body 1, a feed pipe 3 with one end extending to the inside is fixedly installed on the right side of the top of the kettle body 1, a first solenoid valve 4 located above the kettle body 1 is fixedly installed on the outside of the feed pipe 3, a discharge pipe 5 with one end extending to the bottom of the kettle body 1 is fixedly installed on the inner bottom wall of the kettle body 1, and a second solenoid valve 6 located below the kettle body 1 is fixedly installed on the outside of the discharge pipe 5.

[0022] An L-shaped block 7 located on the left side of the feed pipe 3 is fixedly installed on the top of the kettle body 1, and a stirring component 8 with one end extending to the top and the other end extending to the inside of the kettle body 1 is fixedly installed on the left side of the L-shaped block 7. The stirring component 8 includes a driving motor 81, and a driving motor 81 is fixedly installed on the top of the L-shaped block 7. The model of the driving motor 81 can be YZS-160-6. A limiting block 82 is fixedly installed on the left side of the L-shaped block 7. The output shaft of the driving motor 81 extends to the bottom of the L-shaped block 7 and is fixedly installed with a stirring shaft 83 with one end passing through the limiting block 82 and extending to the inside of the kettle body 1. A first mounting hole compatible with the stirring shaft 83 is opened on the top of the limiting block 82, and a second mounting hole compatible with the stirring shaft 83 is opened on the top of the kettle body 1. Six stirring blades 84 located inside the kettle body 1 are fixedly installed on the left and right sides of the stirring shaft 83, and the six stirring blades 84 on one side are distributed equidistantly up and down.

[0023] A fixed cylinder 9 located outside the feed pipe 3 is fixedly installed on the inner top wall of the kettle body 1, a rotating cylinder 10 is movably installed on the outside of the fixed cylinder 9, a first bearing is fixedly installed on the outside of the fixed cylinder 9, the rotating cylinder 10 is rotatably connected to the outside of the fixed cylinder 9 through the first bearing, a connecting block 11 is fixedly installed on the left bottom of the rotating cylinder 10, a scraper 12 is fixedly installed on the left side of the connecting block 11 and the left side of the scraper 12 is in contact with the left side of the inner wall of the kettle body 1.

[0024] A shell 13 located on the left side of the L-shaped block 7 is fixedly installed on the top of the kettle body 1, and the inner bottom wall of the shell 13 is designed to be open. A transmission shaft 14 with one end movably connected to the top of the kettle body 1 is movably installed on the right side of the inner top wall of the shell 13. A second bearing is fixedly installed on the right side of the inner top wall of the shell 13 and the left side of the top of the kettle body 1. The transmission shaft 14 is rotatably connected to the shell 13 and the kettle body 1 respectively through the second bearing. A first transmission assembly 15 is fixedly installed on the outer side of the transmission shaft 14, and one end is fixedly connected to the top of the kettle body 1 and the other end extends to the right side of the shell 13 and is fixedly connected to the outer side of the stirring assembly 8. The first transmission assembly 15 includes a fixed block 151, and the top of the kettle body 1 is fixed A fixed block 151 is installed inside the shell 13 and on the left side of the transmission shaft 14. A worm 152 with one end extending into the inside of the shell 13 and movably connected to the right side of the fixed block 151 is movably installed on the right side of the shell 13. A third bearing is fixedly installed on the right side of the fixed block 151. The worm 152 is rotatably connected to the right side of the fixed block 151 through the third bearing. A worm wheel 153 with one end meshing with the worm 152 is fixedly installed on the outer side of the transmission shaft 14. A driven bevel gear 154 is fixedly installed on the right side of the worm 152. A driving bevel gear 155 located between the kettle body 1 and the limit block 82 and with one end meshing with the driven bevel gear 154 is fixedly installed on the outer side of the stirring shaft 83.

[0025] A rotating shaft 16 having one end extending to the inside of the kettle body 1 is movably installed on the left side of the inner top wall of the shell 13, and a fourth bearing is fixedly installed on the left side of the inner top wall of the shell 13. The rotating shaft 16 is rotatably connected to the inner top wall of the shell 13 through the fourth bearing. A third mounting hole adapted to the rotating shaft 16 is opened on the left side of the top of the kettle body 1. A second transmission assembly 17 having one end fixedly connected to the outer side of the rotating shaft 16 is fixedly installed on the outer side of the transmission shaft 14. The second transmission assembly 17 includes a first pulley 171. A worm gear 1 is fixedly installed on the outer side of the transmission shaft 14. 53, a first pulley 171 located above the kettle body 1 is fixedly installed on the outer side of the rotating shaft 16, and a second pulley 172 located above the kettle body 1 is fixedly installed, and a belt 173 is connected to the first pulley 171 and the second pulley 172 for transmission, and a driving gear 18 located inside the kettle body 1 and on the left side of the rotating cylinder 10 is fixedly installed on the outer side of the rotating shaft 16, and a driven gear 19 located above the connecting block 11 and meshing with the driving gear 18 at one end is fixedly installed on the outer side of the rotating cylinder 10, and the diameter of the driven gear 19 is larger than the diameter of the driving gear 18.

[0026] When in use, the polyurethane raw material and water are injected into the interior of the kettle body 1 through the feed pipe 3, and then the first solenoid valve 4 is closed through the external controller, and the driving motor 81 is started to drive the stirring shaft 83 and the stirring blade 84 to rotate, so as to stir and mix the polyurethane raw material and water, thereby forming water-based polyurethane. At the same time, the stirring shaft 83 will also drive the driving bevel gear 155 to rotate during the rotation process, and then drive the worm 152 to rotate through the driven bevel gear 154, and then drive the transmission shaft 14 to rotate through the worm 152 and the worm wheel 153, so as to perform the initial speed reduction through the worm 152 and the worm wheel 153, and the transmission shaft 14 will rotate. During the process, the first pulley 171 will be driven to rotate, and then the rotating shaft 16 and the driving gear 18 will be driven to rotate through the belt 173 and the second pulley 172, and then the driven gear 19 will drive the rotating cylinder 10 to rotate, and the large gear driven gear 19 will be driven to rotate by the small driving gear 18 to further reduce the speed, and finally drive the rotating cylinder 10 and the scraper 12 to rotate slowly as a whole, and the scraper 12 will clean the inner wall of the kettle body 1 in real time during the rotation process to avoid sticky residual material. After the mixing reaction is completed, the second solenoid valve 6 can be opened to discharge the water-based polyurethane from the discharge pipe 5.

[0027] In summary, the aqueous polyurethane reactor is provided with the first transmission assembly 15. When the stirring shaft 83 rotates, it also drives the driving bevel gear 155 to rotate, and then drives the worm 152 to rotate through the driven bevel gear 154, and then drives the transmission shaft 14 to rotate through the worm 152 and the worm wheel 153, so that the initial speed reduction is performed through the worm 152 and the worm wheel 153. During the rotation of the transmission shaft 14, the first pulley 171 is driven to rotate, and then the rotating shaft 16 and the driving gear 18 are driven to rotate through the belt 173 and the second pulley 172, and then the driven gear 19 drives the rotating drum The body 10 rotates, and the small gear 18 drives the large gear 19 to rotate, so as to further reduce the speed, and finally drives the rotating cylinder 10 and the scraper 12 to rotate slowly as a whole, thereby achieving the purpose of reducing the speed of the scraper 12, thereby avoiding damage to the inner wall of the kettle body 1 due to high-speed friction, and solving the problem that in the actual use of this kettle body, due to the extremely high rotation speed of the stirring shaft, the scraper will also rotate at a very high speed, which will cause high-speed friction between the scraper and the inner wall of the kettle body, thereby causing damage to the inner wall of the kettle body.

[0028] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A waterborne polyurethane reactor, comprising a reactor body (1) and a scraper (12), wherein the reactor body (1) is provided with supporting feet (2) at both the front and rear ends on the left and right sides of the bottom, a feed pipe (3) with one end extending to the inside of the reactor body (1) is provided on the right side of the top of the reactor body (1), a first solenoid valve (4) located above the reactor body (1) is provided on the outside of the feed pipe (3), a discharge pipe (5) with one end extending to the bottom of the reactor body (1) is provided on the inner bottom wall of the reactor body (1), a second solenoid valve (6) located below the reactor body (1) is provided on the outside of the discharge pipe (5), an L-shaped block (7) located on the left side of the feed pipe (3) is provided on the top of the reactor body (1), and a stirring assembly (8) with one end extending to the top of the L-shaped block (7) and the other end extending to the inside of the reactor body (1) is provided on the left side, characterized in that: The inner top wall of the kettle body (1) is provided with a fixed cylinder (9) located outside the feed pipe (3), the outer side of the fixed cylinder (9) is provided with a rotating cylinder (10), the left bottom of the rotating cylinder (10) is provided with a connecting block (11), the scraper (12) is provided on the left side of the connecting block (11), and the left side of the scraper (12) is in contact with the left side of the inner wall of the kettle body (1), the top of the kettle body (1) is provided with a shell (13) located on the left side of the L-shaped block (7), the inner top wall of the shell (13) is provided with a transmission shaft (14) with one end movably connected to the top of the kettle body (1), and the outer side of the transmission shaft (14) is provided with one end movably connected to the top of the kettle body (1). A first transmission assembly (15) is fixedly connected to the first end of the kettle (1) and the other end of the first transmission assembly (15) extends to the right side of the shell (13) and is fixedly connected to the outside of the stirring assembly (8); a rotating shaft (16) having one end extending to the inside of the kettle (1) is provided on the left side of the inner top wall of the shell (13); a second transmission assembly (17) having one end fixedly connected to the outside of the rotating shaft (16) is provided on the outside of the transmission shaft (14); a driving gear (18) is provided on the outside of the rotating shaft (16) and is located inside the kettle (1) and on the left side of the rotating cylinder (10); and a driven gear (19) is provided on the outside of the rotating cylinder (10) and is located above the connecting block (11) and has one end meshing with the driving gear (18).

2. The aqueous polyurethane reactor according to claim 1, characterized in that: The stirring assembly (8) comprises a driving motor (81), the driving motor (81) is fixedly mounted on the top of the L-shaped block (7), a limit block (82) is fixedly mounted on the left side of the L-shaped block (7), an output shaft of the driving motor (81) extends to the bottom of the L-shaped block (7) and is fixedly mounted with a stirring shaft (83) having one end penetrating the limit block (82) and extending into the interior of the kettle body (1), and six stirring blades (84) located inside the kettle body (1) are fixedly mounted on both left and right sides of the stirring shaft (83).

3. A waterborne polyurethane reactor according to claim 2, characterized in that: The first transmission assembly (15) comprises a fixed block (151); the top of the kettle body (1) is fixedly mounted with the fixed block (151) which is located inside the shell (13) and on the left side of the transmission shaft (14); the right side of the shell (13) is movably mounted with a worm (152) having one end extending into the inside and movably connected to the right side of the fixed block (151); the outer side of the transmission shaft (14) is fixedly mounted with a worm wheel (153) having one end meshing with the worm (152); the right side of the worm (152) is fixedly mounted with a driven bevel gear (154); the outer side of the stirring shaft (83) is fixedly mounted with a driving bevel gear (155) which is located between the kettle body (1) and the limit block (82) and has one end meshing with the driven bevel gear (154).

4. The aqueous polyurethane reactor according to claim 3, characterized in that: The second transmission assembly (17) comprises a first pulley (171), the outer side of the transmission shaft (14) is fixedly mounted with the first pulley (171) located above the worm gear (153), the outer side of the rotating shaft (16) is fixedly mounted with a second pulley (172) located above the kettle body (1), and a belt (173) is connected between the first pulley (171) and the second pulley (172) for transmission.

5. The aqueous polyurethane reactor according to claim 1, characterized in that: A first bearing is fixedly mounted on the outer side of the fixed cylinder (9), and the rotating cylinder (10) is rotatably connected to the outer side of the fixed cylinder (9) via the first bearing.

6. The waterborne polyurethane reactor according to claim 1, characterized in that: A second bearing is fixedly mounted on the right side of the inner top wall of the shell (13) and the left side of the top of the kettle body (1), and the transmission shaft (14) is rotatably connected to the shell (13) and the kettle body (1) respectively through the second bearing.

Images