High-precision proportioning device for preparing bio-based polyurethane

Abstract

The utility model discloses a high-precision proportioning device for preparing bio-based polyurethane, which comprises a proportioning tank body and a bottom discharge rack, the proportioning tank body is mounted and connected to the upper end of the bottom discharge rack, the upper end of the proportioning tank body is provided with a uniform dispersion top cover mechanism, and the bottom discharge rack is provided with a bottom discharge rack. A center stirring mechanism is arranged on the inner side of the uniform dispersion top cover mechanism, a box body mounting seat is arranged on the outer wall of the proportioning tank body, and a bio-based polyurethane raw material storage box is arranged at the upper end of the box body mounting seat; a bio-based polyurethane stock solution stored in the bio-based polyurethane raw material storage box can be metered and conveyed into the uniform dispersion top cover mechanism in a high-precision manner through the high-precision gear metering pump, then can be dispersed into the proportioning tank body through the uniform dispersion top cover mechanism, and passes through the central stirring mechanism on the inner side of the uniform dispersion top cover mechanism during dispersion; therefore, the mixing and proportioning preparation are more efficient.

Description

Technical Field

[0001] The utility model relates to the technical field of bio-based polyurethane processing and preparation, in particular to a high-precision proportioning device for preparing bio-based polyurethane. Background Art

[0002] The full name of polyurethane is polyurethane, which is a polymer material with excellent mechanical properties formed by the condensation reaction of polyols and polyisocyanates. When processing and preparing bio-based polyurethane, it is necessary to mix two liquid substances to generate bio-based polyurethane. Therefore, a high-precision proportioning device for the preparation of bio-based polyurethane is needed during the mixing.

[0003] The existing Chinese patent CN211566546U disclosed a proportioning device for polyurethane seal processing on September 25, 2020, which can enhance the sealing of the tank body, speed up the stirring speed, improve the uniformity of stirring, make the material mixing more fully, improve work efficiency, and reduce the limitations of use; it includes a tank body, a support plate and a valve, the interior of the tank body is provided with a working chamber, the upper end of the tank body is provided with a take-in and put-out port, and the take-in and put-out port is connected to the working chamber, the bottom end of the tank body is provided with a discharge port, three groups of support plates are fixedly installed at the bottom end of the tank body, and the support plates are distributed equidistantly in a ring at the bottom end of the tank body; it includes a sealing cover, a motor, a coupling and a transmission shaft, the bottom end of the coupling is connected to the top end of the transmission shaft, and several groups of stirring blades are provided on the transmission shaft, and multiple groups of stirring blades are all located inside the working chamber, and the sealing cover, the transmission shaft and the stirring blades are made of carbon steel, and the surfaces of the sealing cover, the transmission shaft and the stirring blades are all treated with anti-corrosion.

[0004] However, when adding two raw liquid materials for mixing and proportioning, the above device is only directly transported to the tank body, and then the stirring blades on the transmission shaft are rotated and mixed. In this way, the two raw liquid materials are not mixed very fully, resulting in a problem of not being very efficient during reaction preparation. Utility Model Content

[0005] The utility model aims to provide a high-precision proportioning device for preparing bio-based polyurethane, so as to solve the problem that the above-mentioned device proposed in the above-mentioned background technology, when adding two raw liquid materials for mixing and proportioning, is only directly transported to a tank body, and then rotated and mixed by a stirring blade on a transmission shaft, so that the two raw liquid materials are not mixed very fully when mixed, resulting in low efficiency in reaction preparation.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a high-precision proportioning device for preparing bio-based polyurethane, comprising a proportioning tank and a bottom discharge rack, wherein the proportioning tank is installed and connected to the upper end position of the bottom discharge rack, the upper end of the proportioning tank is provided with a uniform dispersion top cover mechanism, the inner side of the uniform dispersion top cover mechanism is provided with a central stirring mechanism, the outer wall of the proportioning tank is provided with a box mounting seat, the upper end of the box mounting seat is provided with a bio-based polyurethane raw material storage box, the upper end of the bio-based polyurethane raw material storage box is provided with a high-precision gear metering pump, and the high-precision gear metering pump, the central stirring mechanism, the bio-based polyurethane raw material storage box and the bottom discharge rack are electrically connected to an external controller.

[0007] Among them, the uniform dispersion top cover mechanism includes a stirring sleeve cavity, a liquid dispensing tube, an input head, a diversion vertical pipe and a sealing top cover, input pipes are arranged on both sides of the upper end of the sealing top cover, a diversion vertical pipe is arranged at the lower end of the input pipe, a plurality of liquid dispensing tubes are arranged on the inner wall of the diversion vertical pipe, a stirring sleeve cavity is arranged between the plurality of liquid dispensing tubes, an input head is arranged on the inner side of the stirring sleeve cavity on the liquid dispensing tube, the sealing top cover is connected to the proportioning tank body, and the input pipe is connected to the high-precision gear metering pump.

[0008] Among them, the bio-based polyurethane raw material storage box includes a feed addition pipe, an extraction pipe, an infrared liquid level sensor and a storage box body. A feed addition pipe is arranged at the upper corner of the storage box body, an extraction pipe is arranged on the inner side of the storage box body, an infrared liquid level sensor is arranged on the outer side of the feed addition pipe located on the storage box body, the extraction pipe is connected to a high-precision gear metering pump, and the storage box body is connected to a box body mounting seat.

[0009] Among them, the central stirring mechanism includes a stirring main rod, a mixing liquid rod, a coupling and a rotating motor. The output end of the rotating motor is provided with a coupling, the lower end of the coupling is provided with a stirring main rod, the outer wall of the stirring main rod is provided with a plurality of mixing liquid rods, and the rotating motor is connected to the uniform dispersion top cover mechanism.

[0010] Among them, the bottom discharge frame includes a bottom discharge pipe, a supporting column foot, an electromagnetic discharge valve and an upper cone bucket. The lower end of the upper cone bucket is provided with a bottom discharge pipe, the inner side of the bottom discharge pipe is provided with an electromagnetic discharge valve, the outer side of the bottom discharge pipe is provided with a supporting column foot on the upper cone bucket, and the upper cone bucket is connected to the proportioning tank body.

[0011] There are two box mounting seats in total, and the box mounting seats are symmetrically arranged on the proportioning tank body.

[0012] The central stirring mechanism is located in the middle of the inner side of the uniformly dispersing top cover mechanism, and the two ends of the central stirring mechanism are symmetrical.

[0013] In summary, due to the adoption of the above technology, the beneficial effects of the utility model are:

[0014] 1. In the utility model, a uniform dispersion cover mechanism structure is provided, so that uniform dispersion can be achieved, thereby making the mixing more efficient when passing through the central stirring mechanism. The sealing cover of the uniform dispersion cover mechanism is connected to the proportioning tank body by screw installation, so that the sealing cover can close the top opening of the proportioning tank body, and the input pipeline can receive an equal amount of bio-based polyurethane raw liquid material delivered by a high-precision gear metering pump, and then the bio-based polyurethane raw liquid material can be delivered to the branch vertical pipe through the input pipeline, and then delivered to the liquid separation pipe through the branch vertical pipe, and the liquid separation pipe delivers the bio-based polyurethane raw liquid material to the input head, and then discharges the material to the stirring sleeve cavity through the input head, and the bio-based polyurethane raw liquid material at the stirring sleeve cavity can be effectively stirred and mixed through the mixing liquid rod of the central stirring mechanism, so that the bio-based polyurethane raw liquid materials on both sides can be timely and fully mixed and prepared, making the mixing and preparation more efficient.

[0015] 2. In the utility model, a bio-based polyurethane raw material storage box structure is provided, so that the internal raw material position can be sensed. The storage box body of the bio-based polyurethane raw material storage box is welded and connected to the box body mounting seat, so that the storage box body is easy to install and place. The storage box body has a feed adding pipe at the upper end, so that the bio-based polyurethane raw material liquid can be added to the storage box body for storage. The stored bio-based polyurethane raw material liquid can be extracted into a high-precision gear metering pump through an extraction pipeline, and then the delivery volume can be controlled by the high-precision gear metering pump, so as to achieve high-precision ratio preparation, and during the ratio delivery, the liquid level change can be effectively sensed by the infrared liquid level sensor, so that the delivery volume can be effectively sensed, so that it can be compared with the data of the high-precision gear metering pump to determine whether the delivery is accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the three-dimensional structure of a high-precision proportioning device for preparing bio-based polyurethane according to the utility model;

[0017] Figure 2 This is a schematic diagram of the uniform dispersion top cover structure of a high-precision proportioning device for preparing bio-based polyurethane in the utility model;

[0018] Figure 3 This is a schematic diagram of the structure of a bio-based polyurethane raw material storage box of a high-precision proportioning device for preparing bio-based polyurethane in the utility model;

[0019] Figure 4This is a schematic diagram of the structure of the central stirring mechanism of a high-precision proportioning device for preparing bio-based polyurethane according to the utility model;

[0020] Figure 5 The utility model is a schematic diagram of the bottom discharging frame structure of a high-precision proportioning device for preparing bio-based polyurethane.

[0021] In the figure: 1. High-precision gear metering pump; 2. Uniform dispersion top cover mechanism; 21. Stirring sleeve cavity; 22. Distributor tube; 23. Input head; 24. Diverter vertical pipe; 25. Sealed top cover; 26. Input pipeline; 3. Central stirring mechanism; 31. Stirring main rod; 32. Mixing liquid rod; 33. Coupling; 34. Rotating motor; 4. Bio-based polyurethane raw material storage box; 41. Feed addition pipe; 42. Extraction pipeline; 43. Infrared liquid level sensor; 44. Storage box; 5. Box mounting seat; 6. Proportioning tank; 7. Bottom discharge rack; 71. Bottom discharge pipe; 72. Support column foot; 73. Electromagnetic discharge valve; 74. Upper cone bucket. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are 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. Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the utility model for which protection is claimed, but merely represents selected embodiments of the utility model.

[0023] Embodiment 1

[0024] Reference Figure 1 , Figure 3 and Figure 5 A high-precision proportioning device for preparing bio-based polyurethane comprises a proportioning tank body 6 and a bottom discharge rack 7. The proportioning tank body 6 is installed and connected to the upper end position of the bottom discharge rack 7. A uniform dispersion top cover mechanism 2 is arranged at the upper end of the proportioning tank body 6. A central stirring mechanism 3 is arranged on the inner side of the uniform dispersion top cover mechanism 2. A box mounting seat 5 is arranged on the outer wall of the proportioning tank body 6. A bio-based polyurethane raw material storage box 4 is arranged at the upper end of the box mounting seat 5. A high-precision gear metering pump 1 is arranged at the upper end of the bio-based polyurethane raw material storage box 4. The high-precision gear metering pump 1, the central stirring mechanism 3, the bio-based polyurethane raw material storage box 4 and the bottom discharge rack 7 are electrically connected to an external controller.

[0025] In the utility model, the bio-based polyurethane raw material storage box 4 includes a feed adding pipe 41, an extraction pipe 42, an infrared liquid level sensor 43 and a storage box 44. The feed adding pipe 41 is arranged at the upper corner of the storage box 44, the extraction pipe 42 is arranged on the inner side of the storage box 44, the outer side of the feed adding pipe 41 is located on the storage box 44 and an infrared liquid level sensor 43 is arranged on the storage box 44, the extraction pipe 42 is connected to the high-precision gear metering pump 1, the storage box 44 is connected to the box mounting seat 5, and the storage box 44 of the bio-based polyurethane raw material storage box 4 is welded and connected to the box mounting seat 5, so as to store The box body 44 is easy to install and place. The storage box body 44 has a feed adding pipe 41 at the upper end, so that the bio-based polyurethane raw material liquid can be added to the storage box body 44 for storage. The stored bio-based polyurethane raw material liquid can be extracted into the high-precision gear metering pump 1 through the extraction pipe 42, and then the delivery amount can be controlled by the high-precision gear metering pump 1, so as to achieve high-precision ratio preparation, and during the ratio delivery, the infrared liquid level sensor 43 can effectively sense the liquid level change, so that the delivery amount can be effectively sensed, so that it can be compared with the data of the high-precision gear metering pump 1 to determine whether the delivery is accurate.

[0026] In the utility model, the bottom discharge frame 7 includes a bottom discharge pipe 71, a support column foot 72, an electromagnetic discharge valve 73 and an upper cone bucket 74. The lower end of the upper cone bucket 74 is provided with a bottom discharge pipe 71, the inner side of the bottom discharge pipe 71 is provided with an electromagnetic discharge valve 73, the outer side of the bottom discharge pipe 71 is located on the upper cone bucket 74 and a support column foot 72 is provided, the upper cone bucket 74 is connected to the proportioning tank body 6, the upper cone bucket 74 of the bottom discharge frame 7 is welded and connected to the proportioning tank body 6, the upper cone bucket 74 can be supported and placed due to the support column foot 72 at the lower end, and when discharging, the electromagnetic discharge valve 73 on the bottom discharge pipe 71 is opened, so that discharging can be done.

[0027] In the present invention, two box mounting seats 5 are provided, and the box mounting seats 5 are symmetrically arranged on the proportioning tank 6, so that they can be placed symmetrically for use.

[0028] In the utility model, the central stirring mechanism 3 is located in the middle of the inner side of the uniformly dispersing top cover mechanism 2, and the two ends of the central stirring mechanism 3 are symmetrical, so that it can be stably placed for stirring and mixing.

[0029] Working principle: When in use, the proportioning tank body 6 can be placed in a designated position through the bottom discharge rack 7 at the lower end, and two different bio-based polyurethane raw liquid materials are respectively stored in the bio-based polyurethane raw material storage box 4 at the upper end of the corresponding box mounting seat 5. The bio-based polyurethane raw liquid material stored in the bio-based polyurethane raw material storage box 4 can be accurately metered and transported to the uniform dispersion top cover mechanism 2 through the high-precision gear metering pump 1, and then dispersed into the proportioning tank body 6 through the uniform dispersion top cover mechanism 2. When dispersing, it passes through the central stirring mechanism 3 on the inner side of the uniform dispersion top cover mechanism 2, so that it can be stirred and mixed in time, which is more efficient in the preparation of mixed proportions.

[0030] Embodiment 2

[0031] Reference Figure 1 , Figure 2 and Figure 4 , a high-precision proportioning device for preparing bio-based polyurethane. Compared with the first embodiment, the uniform dispersion top cover mechanism 2 in this embodiment includes a stirring sleeve cavity 21, a liquid dispensing tube 22, an input head 23, a flow dividing vertical pipe 24 and a sealing top cover 25. Input pipes 26 are arranged on both sides of the upper end of the sealing top cover 25, and a flow dividing vertical pipe 24 is arranged at the lower end of the input pipe 26. A plurality of liquid dispensing tubes 22 are arranged on the inner wall of the flow dividing vertical pipe 24, and a stirring sleeve cavity 21 is arranged between the plurality of liquid dispensing tubes 22. An input head 23 is arranged on the inner side of the stirring sleeve cavity 21 and the liquid dispensing tube 22. The sealing top cover 25 is connected to the proportioning tank body 6, and the input pipe 26 is connected to the high-precision gear metering pump 1.

[0032] Working principle: the sealing top cover 25 of the uniformly dispersing top cover mechanism 2 is connected to the proportioning tank body 6 by screw installation, so that the sealing top cover 25 can close the top opening of the proportioning tank body 6, and the input pipe 26 can receive an equal amount of bio-based polyurethane raw liquid delivered by the high-precision gear metering pump 1, and then the bio-based polyurethane raw liquid can be delivered to the branch vertical pipe 24 through the input pipe 26, and then delivered to the liquid separation pipe 22 through the branch vertical pipe 24, and the liquid separation pipe 22 delivers the bio-based polyurethane raw liquid to the input head 23, and then discharges the material to the stirring sleeve cavity 21 through the input head 23, and the bio-based polyurethane raw liquid at the stirring sleeve cavity 21 can be effectively stirred and mixed through the mixing liquid rod 32 of the central stirring mechanism 3, so that the bio-based polyurethane raw liquid on both sides can be timely and fully mixed and prepared, making the mixing and preparation more efficient.

[0033] Embodiment 3

[0034] Reference Figure 1 and Figure 4, a high-precision proportioning device for preparing bio-based polyurethane. Compared with the second embodiment, the central stirring mechanism 3 in this embodiment includes a stirring main rod 31, a mixing liquid rod 32, a coupling 33 and a rotating motor 34. The output end of the rotating motor 34 is provided with a coupling 33, the lower end of the coupling 33 is provided with a stirring main rod 31, the outer wall of the stirring main rod 31 is provided with a plurality of mixing liquid rods 32, and the rotating motor 34 is connected to the uniform dispersion top cover mechanism 2.

[0035] Working principle: The rotating motor 34 of the central stirring mechanism 3 is connected to the upper end of the uniform dispersion cover mechanism 2 by screw installation. The output end of the rotating motor 34 can drive the coupling 33 to rotate, and the coupling 33 can drive the stirring main rod 31 to rotate. The stirring main rod 31 can drive the mixed liquid rod 32 to rotate, and the mixed liquid rod 32 can rotate and mix on the inner side of the lower end of the uniform dispersion cover mechanism 2, so that the mixing ratio is more efficient.

[0036] 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.

[0037] 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.

Claims

1. A high-precision proportioning device for preparing bio-based polyurethane, comprising a proportioning tank (6) and a bottom discharge frame (7), wherein the proportioning tank (6) is installed and connected to the upper end of the bottom discharge frame (7), characterized in that: The upper end of the proportioning tank (6) is provided with a uniform dispersion cover mechanism (2), the inner side of the uniform dispersion cover mechanism (2) is provided with a central stirring mechanism (3), the outer wall of the proportioning tank (6) is provided with a box mounting seat (5), the upper end of the box mounting seat (5) is provided with a bio-based polyurethane raw material storage box (4), the upper end of the bio-based polyurethane raw material storage box (4) is provided with a high-precision gear metering pump (1), and the high-precision gear metering pump (1), the central stirring mechanism (3), the bio-based polyurethane raw material storage box (4) and the bottom discharge frame (7) are electrically connected to an external controller.

2. A high-precision proportioning device for preparing bio-based polyurethane according to claim 1, characterized in that: The uniform dispersion cover mechanism (2) comprises a stirring sleeve cavity (21), a liquid dispensing tube (22), an input head (23), a flow distribution vertical pipe (24) and a sealing cover (25). Input pipes (26) are arranged on both sides of the upper end of the sealing cover (25). The lower end of the input pipe (26) is provided with a flow distribution vertical pipe (24). The inner wall of the flow distribution vertical pipe (24) is provided with a plurality of liquid dispensing tubes (22). A stirring sleeve cavity (21) is arranged between the plurality of liquid dispensing tubes (22). An input head (23) is arranged on the inner side of the stirring sleeve cavity (21) and on the liquid dispensing tube (22). The sealing cover (25) is connected to a proportioning tank body (6), and the input pipe (26) is connected to a high-precision gear metering pump (1).

3. A high-precision proportioning device for preparing bio-based polyurethane according to claim 1, characterized in that: The bio-based polyurethane raw material storage box (4) comprises a feed addition pipe (41), an extraction pipe (42), an infrared liquid level sensor (43) and a storage box (44); the feed addition pipe (41) is arranged at the upper corner of the storage box (44); the extraction pipe (42) is arranged on the inner side of the storage box (44); the infrared liquid level sensor (43) is arranged on the outer side of the feed addition pipe (41) and located on the storage box (44); the extraction pipe (42) is connected to a high-precision gear metering pump (1); and the storage box (44) is connected to a box mounting seat (5).

4. A high-precision proportioning device for preparing bio-based polyurethane according to claim 1, characterized in that: The central stirring mechanism (3) comprises a stirring main rod (31), a mixed liquid rod (32), a coupling (33) and a rotating motor (34); the output end of the rotating motor (34) is provided with a coupling (33); the lower end of the coupling (33) is provided with a stirring main rod (31); the outer wall of the stirring main rod (31) is provided with a plurality of mixed liquid rods (32); and the rotating motor (34) is connected to the uniform dispersion top cover mechanism (2).

5. A high-precision proportioning device for preparing bio-based polyurethane according to claim 1, characterized in that: The bottom discharge frame (7) comprises a bottom discharge pipe (71), a support column foot (72), an electromagnetic discharge valve (73) and an upper cone bucket (74); the lower end of the upper cone bucket (74) is provided with the bottom discharge pipe (71); the inner side of the bottom discharge pipe (71) is provided with an electromagnetic discharge valve (73); the outer side of the bottom discharge pipe (71) is provided with a support column foot (72) on the upper cone bucket (74); and the upper cone bucket (74) is connected to the proportioning tank body (6).

6. A high-precision proportioning device for preparing bio-based polyurethane according to claim 1, characterized in that: There are two box mounting seats (5) in total, and the box mounting seats (5) are symmetrically arranged on the proportioning tank (6).

7. A high-precision proportioning device for preparing bio-based polyurethane according to claim 1, characterized in that: The central stirring mechanism (3) is located in the middle of the inner side of the uniform dispersion top cover mechanism (2), and the two ends of the central stirring mechanism (3) are in a symmetrical state.

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