Foaming device for polyurethane trepanning hard foam standby

Abstract

The utility model relates to the technical field of polyurethane open-cell hard foam preparation, in particular to a standby foaming device for polyurethane open-cell hard foam, which comprises a support base, a preparation barrel and a protective cover, a homogeneous mixing mechanism is arranged in the preparation barrel, a mixing monitoring mechanism is arranged on the side edge of the homogeneous mixing mechanism, and the protective cover is arranged on the support base. When the standby foaming device for polyurethane trepanning hard foaming is used, shearing force and a flowing mode generated by the stirring shaft can be influenced by a material mixing state in a stirring process, so that the rotating speed of the transmission shaft is indirectly monitored by the rotating speed monitoring sensor through mechanism combination transmission by utilizing the characteristic; the raw material mixing progress in the device can be directly known by taking the rotating speed in the later period as the standard, so that a worker can conveniently take out the materials in the device in time, meanwhile, the problem that follow-up foaming use is affected by excessive mixing of the raw materials is avoided, the overall structural design is ingenious, and the practical effect is good.

Description

Technical Field

[0001] The utility model relates to the technical field of polyurethane open-cell rigid foam preparation, and particularly relates to a foaming device for polyurethane open-cell rigid foam preparation. Background Technique

[0002] Polyurethane is a polymer material formed by the reaction of isocyanate and polyol, with excellent physical and chemical properties. The structure of polyurethane can vary according to different raw materials and synthesis methods, forming various forms, including foams, elastomers, coatings, adhesives, and plastics, etc. Polyurethane open-cell rigid foam is a material with good heat insulation and structural strength, widely used in multiple fields such as construction, cold chain logistics, and automobiles. When preparing, polyether polyol, foaming agent, catalyst, and other additives need to be fully mixed according to a certain ratio to ensure uniform distribution of each component;

[0003] The "foaming device for polyurethane foaming" disclosed in the patent number "CN205343590U" can intelligently control the frequency conversion motor through the controller setting program, thereby controlling the mixing time and power. It has a high degree of automation and good stability; however, since the formation of polyurethane foam is a chemical reaction process, too long mixing time may lead to too fast reaction, resulting in uneven foam structure or cell damage. Therefore, it is necessary to take out the raw materials when they are mixed evenly and not overmix. However, the above device cannot timely understand the mixing progress of the raw materials in the device, so it is impossible to accurately master the feeding time, and the overall use effect is somewhat poor. Content of the Utility Model

[0004] The purpose of the utility model is to provide a foaming device for polyurethane open-cell rigid foam preparation to solve the above problems, improving the problem that the existing foaming device for polyurethane open-cell rigid foam preparation cannot timely understand the mixing progress of the raw materials in the device and thus cannot accurately master the feeding time.

[0005] A foaming device for polyurethane open-cell rigid foam preparation includes a support base, a preparation barrel, and a protective cover: a preparation barrel is arranged above the support base, a protective cover is attached to the outer wall of the top end of the preparation barrel, a feed hopper is conductively installed on the outer wall of the top end of the protective cover, a portable disassembly mechanism is connected between the preparation barrel and the protective cover, a homogeneous mixing mechanism is arranged inside the preparation barrel, and a mixing monitoring mechanism is arranged on the side of the homogeneous mixing mechanism. The portable disassembly mechanism includes a threaded ring and an annular threaded groove. The threaded ring is arranged on the outer wall of the bottom end of the protective cover, and the annular threaded groove is opened on the outer wall of the top end of the preparation barrel. The threaded ring and the annular threaded groove are installed by threading.

[0006] Preferably, the homogeneous mixing mechanism includes a positioning support frame, a driving motor and a transmission shaft. A positioning support frame is provided on the outer wall of the top end of the protective cover. The positioning support frame is arranged in a "Z" shape, and a driving motor is provided on the outer wall of the top end of the positioning support frame. The driving motor is connected to the outer wall of the top end of the transmission shaft.

[0007] Preferably, stirring blades are provided on the outer wall of the side of the middle section of the transmission shaft. Mounting frames are symmetrically arranged on the outer walls of the side of the transmission shaft near the top end and at the bottom end. The interior of the mounting frame is of a porous filter screen structure. A limiting scraper is connected between the two mounting frames.

[0008] Preferably, the stirring blades are arranged in a spiral structure. The outer walls of the sides of the mounting frame and the limiting scraper are both in contact with the inner wall of the side of the preparation barrel.

[0009] Preferably, the mixing monitoring mechanism includes a driving gear and a driven gear. A driving gear is provided on the outside of the transmission shaft. A driven gear is meshed and installed on the side of the driving gear. Both the driving gear and the driven gear are rotatably installed on the outer wall of the top end of the protective cover.

[0010] Preferably, an auxiliary monitoring shaft is provided on the outer wall of the top end of the driven gear. The outer wall of the top end of the auxiliary monitoring shaft is connected to a rotational speed monitoring sensor, and the rotational speed monitoring sensor is connected to the outer wall of the top end of the positioning support frame.

[0011] Preferably, a heating base is provided on the outer wall of the bottom end of the preparation barrel. The outer wall of the bottom end of the heating base is connected to the outer wall of the top end of the support base. A power supply member and a controller are provided on the outer wall of the top end of the support base, and both the power supply member and the controller are arranged inside the protective cover.

[0012] Preferably, the outer wall of the bottom end of the protective cover is connected to the outer wall of the top end of the support base. A temperature monitoring sensor is provided on the outer wall of the top end of the protective cover, and a heat conduction rod is connected between the temperature monitoring sensor and the outer wall of the side of the preparation barrel.

[0013] The beneficial effects of the present utility model are:

[0014] 1. When the foaming device for preparing open-cell rigid polyurethane foam is in use, during the stirring process, the shear force and flow pattern generated by the stirring shaft are affected by the material mixing state. When the material is relatively uniform and the flow is relatively smooth, the rotation speed of the stirring shaft is more uniform. When the material is in a state of uneven mixing, the uneven distribution of raw materials in the device will cause the rotation speed of the stirring shaft to rotate in a fluctuating manner. Then, by using this distinguishing feature, through the combined transmission of the mechanism, the rotation speed monitoring sensor indirectly monitors the rotation speed of the transmission shaft. Taking the later rotation speed as the standard, the progress of raw material mixing inside the device can be directly understood, which facilitates the staff to timely take out the materials in the device, and at the same time avoids the problem that excessive raw material mixing affects subsequent foaming use. The overall structure design is ingenious and the practical effect is good;

[0015] 2. When the foaming device for preparing open-cell rigid polyurethane foam is in use, through the design of the mechanism drive to drive the stirring blades, the installation frame and the limit scraper to rotate synchronously, the stirring blades are set as a spiral structure so that when rotating, they can mix the raw materials inside the device in a longitudinal trajectory. At the same time, as the installation frame and the limit scraper rotate, they can mix the raw materials inside the device in a transverse trajectory. Thus, the combination of horizontal and vertical directions greatly accelerates the mixing and homogenization effect of the materials. At the same time, as the installation frame and the limit scraper rotate, they can also scrape off the materials adhered to the inner wall of the device to participate in the mixing. Further, the inside of the installation frame is set as a porous filter screen structure so that it can also achieve the effect of dispersing and mixing the materials during the rotation process. The overall structure design is ingenious and the practical effect is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is the overall three-dimensional structure schematic diagram of the present utility model;

[0017] Figure 2 is the overall sectional three-dimensional structure schematic diagram of the present utility model;

[0018] Figure 3 is the three-dimensional structure schematic diagram of the portable disassembly mechanism of the present utility model;

[0019] Figure 4 is the three-dimensional structure schematic diagram of the homogenizing mixing mechanism of the present utility model;

[0020] Figure 5 is the three-dimensional structure schematic diagram of the mixing monitoring mechanism of the present utility model;

[0021] Figure 6 is the three-dimensional structure schematic diagram of the installation of the heating base of the present utility model.

[0022] In the figure: 1. Support base; 2. Preparation barrel; 3. Protective cover; 4. Portable disassembly mechanism; 41. Threaded ring; 42. Annular thread groove; 5. Homogeneous mixing mechanism; 51. Positioning support frame; 52. Driving motor; 53. Transmission shaft; 54. Stirring blade; 55. Installation frame; 56. Limiting scraper; 6. Mixing monitoring mechanism; 61. Driving gear; 62. Driven gear; 63. Auxiliary monitoring shaft; 64. Rotation speed monitoring sensor; 71. Heating base; 72. Power supply component; 73. Controller; 74. Protective cover; 75. Temperature monitoring sensor; 76. Heat conduction rod. Specific implementation manner

[0023] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0024] During specific implementation: As Figure 1-6 shown, a foaming device for preparing open-cell rigid polyurethane foam includes a support base 1, a preparation barrel 2 and a protective cover 3: A preparation barrel 2 is arranged above the support base 1, and a protective cover 3 is fitted on the outer wall of the top end of the preparation barrel 2. A feed hopper is conductively installed on the outer wall of the top end of the protective cover 3. A portable disassembly mechanism 4 is connected between the preparation barrel 2 and the protective cover 3. A homogeneous mixing mechanism 5 is arranged inside the preparation barrel 2, and a mixing monitoring mechanism 6 is arranged on the side of the homogeneous mixing mechanism 5. The portable disassembly mechanism 4 includes a threaded ring 41 and an annular thread groove 42. The threaded ring 41 is arranged on the outer wall of the bottom end of the protective cover 3, and the annular thread groove 42 is opened on the outer wall of the top end of the preparation barrel 2. The threaded ring 41 and the annular thread groove 42 are installed by threading; When it is necessary to remove the protective cover 3 from above the preparation barrel 2, at this time, only need to rotate the protective cover 3 until the threaded ring 41 at its bottom end is completely separated from the annular thread groove 42 at the top end of the preparation barrel 2. The installation is the same.

[0025] The homogeneous mixing mechanism 5 includes a positioning support frame 51, a driving motor 52 and a transmission shaft 53. The positioning support frame 51 is provided on the outer wall of the top end of the protective cover 3. The positioning support frame 51 is set in a "Z" shape, and the driving motor 52 is provided on the outer wall of the top end of the positioning support frame 51. The driving motor 52 is connected to the outer wall of the top end of the transmission shaft 53. A stirring blade 54 is provided on the outer side wall of the transmission shaft 53 at the middle position. Mounting frames 55 are symmetrically provided on the outer side walls of the transmission shaft 53 near the top end and at the bottom end. The inside of the mounting frame 55 is set as a porous filter structure. A limiting scraper 56 is connected between the two mounting frames 55; when it is necessary to homogeneously mix the preparation raw materials inside the device, only the driving motor 52 needs to be turned on at this time. After the driving motor 52 is turned on, it will automatically drive the transmission shaft 53 to rotate. Subsequently, the rotation of the transmission shaft 53 will automatically drive the stirring blade 54 and the mounting frame 55 to rotate. When the mounting frame 55 rotates, it will automatically drive the limiting scraper 56 to rotate.

[0026] The stirring blade 54 is set in a spiral structure. The outer side walls of the mounting frame 55 and the limiting scraper 56 are both in contact with the inner side wall of the preparation barrel 2; here, the stirring blade 54 is set in a spiral structure so that it can convey the preparation raw materials inside the device up and down during rotation, so as to achieve the effect of longitudinal homogeneous mixing. Through the design that the outer side walls of the mounting frame 55 and the limiting scraper 56 are both in contact with the inner side wall of the preparation barrel 2, when the two rotate, they can scrape off the part of the material adhering to the inner wall of the preparation barrel 2 and continue to participate in the mixing. At the same time, by setting the inside of the mounting frame 55 as a porous filter structure, it can horizontally rotate and disperse the materials inside the device.

[0027] The mixed monitoring mechanism 6 includes a driving gear 61 and a driven gear 62. The driving gear 61 is arranged outside the transmission shaft 53. The driven gear 62 is meshed and installed on the side of the driving gear 61. Both the driving gear 61 and the driven gear 62 are rotatably installed on the top outer wall of the protective cover 3. An auxiliary monitoring shaft 63 is arranged on the top outer wall of the driven gear 62. The top outer wall of the auxiliary monitoring shaft 63 is connected to the rotational speed monitoring sensor 64, and the rotational speed monitoring sensor 64 is connected to the top outer wall of the positioning support frame 51. When the above-mentioned transmission shaft 53 rotates, it will also synchronously drive the driving gear 61 to rotate. Subsequently, the rotation of the driving gear 61 will automatically drive the driven gear 62 to rotate. When the driven gear 62 rotates, it will automatically drive the auxiliary monitoring shaft 63 to rotate. Here, the setting of the rotational speed monitoring sensor 64 has the effect of monitoring the rotational speed of the auxiliary monitoring shaft 63. Since during the stirring process, the shear force and flow pattern generated by the stirring shaft will be affected by the material mixing state. When the material is relatively uniform, the flow is relatively smooth and the rotational speed of the stirring shaft is more uniform. When the material is in a state of uneven mixing, the uneven distribution of raw materials in the device will cause the rotational speed of the stirring shaft to rotate in a fluctuating manner. Therefore, by using this differential feature, the rotational speed of the transmission shaft 53 can be indirectly monitored through the above-mentioned rotational speed monitoring sensor 64. Taking the later rotational speed as the standard, the raw material mixing progress inside the device can be directly understood, thus facilitating the staff to timely take out the materials in the device.

[0028] A heating base 71 is provided on the outer wall of the bottom end of the preparation barrel 2. The outer wall of the bottom end of the heating base 71 is connected to the outer wall of the top end of the support base 1. A power supply member 72 and a controller 73 are provided on the outer wall of the top end of the support base 1. Both the power supply member 72 and the controller 73 are arranged inside a protective cover 74. The outer wall of the bottom end of the protective cover 74 is connected to the outer wall of the top end of the support base 1. A temperature monitoring sensor 75 is provided on the outer wall of the top end of the protective cover 74. A temperature conduction rod 76 is connected between the temperature monitoring sensor 75 and the outer wall of the side of the preparation barrel 2. Since an appropriate temperature can accelerate the mixing rate of the polyurethane open-cell rigid foam raw materials, when it is necessary to control the temperature inside the device in real time, first, the monitoring range of the temperature monitoring sensor 75 needs to be set according to the heating safety range of the polyurethane open-cell rigid foam raw materials. Then, the temperature monitoring sensor 75 is turned on. The setting of the temperature conduction rod 76 here facilitates timely transferring the outer wall temperature of the preparation barrel 2 to the temperature monitoring sensor 75. Once the outer wall temperature of the preparation barrel 2 is lower than the monitoring range of the temperature monitoring sensor 75, the temperature monitoring sensor 75 will automatically transmit the information to the controller 73. Then, the controller 73 will automatically control the power supply member 72 to turn on and supply power to the heating base 71. It should be noted here that an electric heating wire is provided inside the heating base 71. Then, the electric heating wire is energized and automatically heats the preparation barrel 2 by heat transfer. Once the outer wall temperature of the preparation barrel 2 reaches the monitoring range of the temperature monitoring sensor 75, the temperature monitoring sensor 75 will also transmit the information to the controller 73. Then, the controller 73 will automatically control the power supply member 72 to stop supplying power, thus achieving the effect of temperature control.

[0029] When the present utility model is in use, first, the raw materials need to be all poured into the interior of the preparation barrel 2 through the feed hopper. When it is necessary to homogenize and mix the preparation raw materials inside the device, only the drive motor 52 needs to be turned on. After the drive motor 52 is turned on, it will automatically drive the transmission shaft 53 to rotate. Then, when the transmission shaft 53 rotates, it will automatically drive the stirring blades 54 and the mounting frame 55 to rotate. When the mounting frame 55 rotates, it will automatically drive the limiting scraping plate 56 to rotate. Here, the stirring blades 54 are set in a spiral structure so that when rotating, they can convey the preparation raw materials inside the device up and down, thus achieving the effect of longitudinal homogeneous mixing. And through the design that the side outer walls of both the mounting frame 55 and the limiting scraping plate 56 are in close contact with the side inner wall of the preparation barrel 2, when they rotate, they can scrape off the part of the materials adhered to the inner wall of the preparation barrel 2 and continue to participate in the mixing. At the same time, by setting the interior of the mounting frame 55 as a porous filter structure, it can rotate and disperse the materials inside the device horizontally.

[0030] Since a suitable temperature can accelerate the mixing rate of the raw materials for open-cell rigid polyurethane foam, when it is necessary to control the temperature inside the device in real time, first, the monitoring range of the temperature monitoring sensor 75 needs to be set according to the heating safety range of the raw materials for open-cell rigid polyurethane foam. Then, the temperature monitoring sensor 75 is turned on. Here, the setting of the heat conduction rod 76 facilitates timely transferring the outer wall temperature of the preparation barrel 2 to the temperature monitoring sensor 75. Once the outer wall temperature of the preparation barrel 2 is lower than the monitoring range of the temperature monitoring sensor 75, the temperature monitoring sensor 75 will automatically transmit the information to the controller 73. Then, the controller 73 will automatically control the power supply component 72 to supply power to the heating base 71. It should be noted here that an electric heating wire is provided inside the heating base 71. Then, the electric heating wire is energized and automatically heats the preparation barrel 2 through heat transfer. Once the outer wall temperature of the preparation barrel 2 reaches the monitoring range of the temperature monitoring sensor 75, the temperature monitoring sensor 75 will also transmit the information to the controller 73. Then, the controller 73 will automatically control the power supply component 72 to stop supplying power, so as to achieve the effect of temperature control;

[0031] When the above-mentioned transmission shaft 53 rotates, it will also drive the driving gear 61 to rotate synchronously. Then, when the driving gear 61 rotates, it will automatically drive the driven gear 62 to rotate. When the driven gear 62 rotates, it will automatically drive the auxiliary monitoring shaft 63 to rotate. Here, the setting of the rotational speed monitoring sensor 64 has the effect of monitoring the rotational speed of the auxiliary monitoring shaft 63. Since during the stirring process, the shear force and flow pattern generated by the stirring shaft will be affected by the material mixing state. When the material is relatively uniform, the flow is relatively smooth and the rotational speed of the stirring shaft is more uniform. When the material is in a state of uneven mixing, the uneven distribution of the raw materials inside the device will cause the rotational speed of the stirring shaft to rotate in a fluctuating manner. Therefore, by using this distinguishing feature, the rotational speed of the transmission shaft 53 is indirectly monitored through the above-mentioned rotational speed monitoring sensor 64. Taking the later rotational speed as the standard, the raw material mixing progress inside the device can be directly understood, thus facilitating the staff to timely take out the materials inside the device. As shown in the attached instructions Figure 1 As shown, a discharge pipe is provided at the bottom of the preparation barrel 2, and a control valve is provided outside the discharge pipe. When taking materials, the control valve is opened, and the materials inside the device will automatically be discharged through the discharge pipe.

[0032] When it is necessary to remove the protective cover 3 from above the preparation barrel 2 to clean the inside of the device, only need to rotate the protective cover 3 until the threaded ring 41 at its bottom is completely separated from the annular threaded groove 42 at the top of the preparation barrel 2. The installation is the same;

[0033] It should be noted here that the above-mentioned driving motor 52 can be powered according to the existing conventional operation technical means. Whether it is powered by a power supply component or an external wire, it belongs to the existing conventional operation technical means and will not be described in detail here.

[0034] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A foaming device for preparing open-cell rigid polyurethane foam, characterized in that, It includes a support base (1), a preparation barrel (2) and a protective cover (3): a preparation barrel (2) is arranged above the support base (1), a protective cover (3) is attached to the outer wall of the top end of the preparation barrel (2), a feed hopper is conductively installed on the outer wall of the top end of the protective cover (3), a portable disassembly mechanism (4) is connected between the preparation barrel (2) and the protective cover (3), a homogenizing and mixing mechanism (5) is arranged inside the preparation barrel (2), a mixing monitoring mechanism (6) is arranged on the side of the homogenizing and mixing mechanism (5), the portable disassembly mechanism (4) includes a threaded ring (41) and an annular threaded groove (42), the threaded ring (41) is arranged on the outer wall of the bottom end of the protective cover (3), the annular threaded groove (42) is opened on the outer wall of the top end of the preparation barrel (2), and the threaded ring (41) and the annular threaded groove (42) are installed by threads.

2. The foaming device for preparing open-cell rigid polyurethane foam according to claim 1, characterized in that: The homogenizing and mixing mechanism (5) includes a positioning support frame (51), a driving motor (52) and a transmission shaft (53). The positioning support frame (51) is arranged on the outer wall of the top end of the protective cover (3). The positioning support frame (51) is arranged in a "Z" shape, and the driving motor (52) is arranged on the outer wall of the top end of the positioning support frame (51). The driving motor (52) is connected to the outer wall of the top end of the transmission shaft (53).

3. The foaming device for preparing open-cell rigid polyurethane foam according to claim 2, characterized in that: Agitating blades (54) are arranged on the outer side wall of the middle position of the transmission shaft (53). Mounting frames (55) are symmetrically arranged on the outer side walls of the transmission shaft (53) near the top end position and at the bottom end position. The inside of the mounting frame (55) is of a porous filter structure. A limiting scraper (56) is connected between the two mounting frames (55).

4. A foaming device for preparing open-cell rigid polyurethane foam according to claim 3, characterized in that: The agitating blades (54) are arranged in a spiral structure. The outer side walls of the mounting frame (55) and the limiting scraper (56) are both attached to the inner side wall of the preparation barrel (2).

5. The foaming device for preparing polyurethane open-cell rigid foam according to claim 2, wherein: The mixing monitoring mechanism (6) includes a driving gear (61) and a driven gear (62). The driving gear (61) is arranged outside the transmission shaft (53). The driven gear (62) is meshingly installed on the side of the driving gear (61). Both the driving gear (61) and the driven gear (62) are rotatably installed on the outer wall of the top end of the protective cover (3).

6. The foaming device for preparing open-cell rigid polyurethane foam according to claim 5, characterized in that: An auxiliary monitoring shaft (63) is arranged on the outer wall of the top end of the driven gear (62). The outer wall of the top end of the auxiliary monitoring shaft (63) is connected to a rotational speed monitoring sensor (64), and the rotational speed monitoring sensor (64) is connected to the outer wall of the top end of the positioning support frame (51).

7. A foaming device for preparing open-cell rigid polyurethane foam according to claim 1, characterized in that: A heating base (71) is arranged on the outer wall of the bottom end of the preparation barrel (2). The outer wall of the bottom end of the heating base (71) is connected to the outer wall of the top end of the support base (1). A power supply component (72) and a controller (73) are arranged on the outer wall of the top end of the support base (1), and both the power supply component (72) and the controller (73) are arranged inside a protective cover (74).

8. A foaming device for preparing open-cell rigid polyurethane foam according to claim 7, characterized in that: The outer wall of the bottom end of the protective cover (74) is connected to the outer wall of the top end of the support base (1). A temperature monitoring sensor (75) is provided on the outer wall of the top end of the protective cover (74), and a heat conduction rod (76) is connected between the temperature monitoring sensor (75) and the outer wall of the side of the preparation barrel (2).

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