Polyurethane raw material circulating mixing device

Abstract

The utility model discloses a polyurethane raw material circulating mixing device which comprises a stirring tank, a tank cover is mounted at the top of the stirring tank, a stirring mechanism is fixedly mounted in the center of the tank cover, a water tank is movably connected to the right side of the stirring tank, and a driving motor is fixedly mounted at the top of the water tank. A cleaning ring is fixedly mounted at the top end in the stirring tank; the stirring mechanism comprises a center shaft, a spiral blade, a first bevel gear, an outer sleeve and stirring fan blades, the center shaft is rotationally connected to the center of the tank cover, the spiral blade is fixedly connected to the outer side of the center shaft, and the first bevel gear is fixedly connected to the top end of the center shaft; the outer sleeve is connected to the outer side of the spiral blade in a sleeving mode, the top of the outer sleeve is fixedly connected with the tank cover, the four sets of stirring fan blades are all fixedly connected to the bottom end of the center shaft, compared with the prior art, an inner circulation is formed through the design of the stirring mechanism, and various raw materials are mixed more evenly.

Description

Technical Field

[0001] The utility model relates to the technical field of polyurethane processing, and particularly relates to a polyurethane raw material circulating and mixing device. Background Art

[0002] Polyurethane (PU), whose full name is polycarbamate, is a polymer material formed by the polycondensation reaction of polyols and polyisocyanates and has excellent mechanical properties. It has extremely strong plasticity. Soft polyurethane mainly has a thermoplastic linear structure. It has better stability, chemical resistance, resilience and mechanical properties than PVC foaming materials, has smaller compression deformation, and has good heat insulation, sound insulation, earthquake resistance and anti-toxic properties. Rigid polyurethane plastics are light in weight, have excellent sound insulation and heat insulation properties, are resistant to chemical drugs, have good electrical properties, are easy to process, and have low water absorption. Polyurethane elastomers have properties between plastics and rubbers, are oil-resistant, wear-resistant, low-temperature resistant, aging-resistant, have high hardness and elasticity. This kind of material has a very wide range of applications, involving products such as coatings, adhesives, fabric finishing agents, leather modifiers, polyurethane soft foams / hard foams, elastomers, etc., and is applied in the fields of textiles, construction, aviation, ships, transportation, medicine, electronics, etc.

[0003] During the processing and production of polyurethane raw materials, it is often necessary to mix various raw materials and stir them to ensure the uniformity of mixing. Existing polyurethane raw material mixing devices include a stirring tank, a stirring mechanism, a driving device and a discharge port. During the mixing and stirring of polyurethane raw materials, due to the addition order and density difference of the raw materials, and the stirring tank being a fixed device, some raw materials are likely to deposit at the bottom of the stirring tank, resulting in stratification of the raw materials in the upper and lower parts of the stirring tank and causing the problem of uneven mixing, which needs to be improved.

[0004] Therefore, the utility model provides a polyurethane raw material circulating and mixing device to solve the above-mentioned problems. Content of the Utility Model

[0005] 1) Technical problems to be solved by the utility model

[0006] In view of the deficiencies of the prior art, the utility model designs a polyurethane raw material circulating and mixing device, which aims to solve the technical problem of uneven mixing in the prior art.

[0007] 2) Technical solutions

[0008] To achieve the above purpose, the utility model provides the following technical solutions:

[0009] A polyurethane raw material recycling and mixing device, including a stirring tank, a tank cover is installed at the top of the stirring tank, a stirring mechanism is fixedly installed at the center of the tank cover, a water tank is movably connected to the right side of the stirring tank, a driving motor is fixedly installed at the top of the water tank, and a cleaning ring is fixedly installed at the top end inside the stirring tank;

[0010] The stirring mechanism includes a central shaft, a spiral blade, a first bevel gear, an outer sleeve and stirring fan blades. The central shaft is rotatably connected to the center of the tank cover. The spiral blade is fixedly connected to the outside of the central shaft. The first bevel gear is fixedly connected to the top end of the central shaft. The outer sleeve is sleeved on the outside of the spiral blade and its top is fixedly connected to the tank cover. The four groups of stirring fan blades are all fixedly connected to the bottom end of the central shaft.

[0011] As a preferred solution of the present utility model, two rows of through holes are evenly opened at the top end of the outer sleeve, and the bottom end of the outer sleeve is located above the four groups of stirring fan blades.

[0012] As a preferred solution of the present utility model, a second bevel gear is fixedly connected to the output end of the driving motor, and the second bevel gear is meshed with the first bevel gear for use.

[0013] As a preferred solution of the present utility model, a feed hopper is fixedly connected to the left end of the top of the tank cover, a water delivery pipe is fixedly connected to the right end of the top of the tank cover, and the right end of the water delivery pipe is fixedly connected to the water tank.

[0014] As a preferred solution of the present utility model, a discharge pipe is fixedly connected to the bottom of the stirring tank, and a gate valve is fixedly connected to the left end of the discharge pipe.

[0015] As a preferred solution of the present utility model, the cleaning ring is fixedly connected to the water delivery pipe, and a number of water outlet holes are evenly opened on the surface of the cleaning ring.

[0016] As a preferred solution of the present utility model, a water pump is fixedly installed inside the water tank, and the output end of the water pump is fixedly connected to the water delivery pipe.

[0017] 3) Beneficial effects

[0018] Compared with the prior art, the beneficial effects of the present utility model are:

[0019] Through the design of the stirring mechanism, during the use of the device, the first bevel gear rotates driven by the driving motor. When the first bevel gear rotates, it drives the central shaft to rotate. When the central shaft rotates, it drives the spiral blade and the stirring fan blade to rotate simultaneously, thereby stirring the polyurethane raw materials inside the stirring tank. During the stirring of the polyurethane raw materials inside the stirring tank, the polyurethane raw materials with high density deposited at the bottom of the stirring tank will flow in from the gap at the bottom end of the outer sleeve. The spiral blade conveys the raw materials at the bottom of the stirring tank upward during rotation, and then flows out from the two rows of through holes at the top end of the outer sleeve to the upper part of the raw materials inside the stirring tank, thus forming an internal circulation and making the mixing of various raw materials more uniform. Description of the Drawings

[0020] Figure 1 It is a three-dimensional schematic diagram of the overall structure of the present utility model;

[0021] Figure 2 It is a cross-sectional view of the overall structure of the present utility model;

[0022] Figure 3 It is a cross-sectional view of the structure of the stirring mechanism in the present utility model;

[0023] Figure 4 is Figure 2 the enlarged view of part A in

[0024] In the figure: 1. Stirring tank; 2. Tank cover; 3. Stirring mechanism; 301. Central shaft; 302. Spiral blade; 303. First bevel gear; 304. Outer sleeve; 305. Stirring fan blade; 306. Through hole; 4. Water tank; 5. Driving motor; 6. Cleaning ring; 7. Second bevel gear; 8. Feed hopper; 9. Water delivery pipe; 10. Discharge pipe; 11. Gate valve; 12. Water outlet hole; 13. Water pump. Detailed Embodiment

[0025] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0026] Embodiment:

[0027] The embodiment of the present utility model provides a polyurethane raw material circulating and mixing device, which aims to solve the technical problem of uneven mixing in the prior art;

[0028] Please refer to Figures 1 - 4 , the present utility model provides a technical solution:

[0029] A polyurethane raw material circulating mixing device includes a stirring tank 1. A tank cover 2 is installed at the top of the stirring tank 1. A stirring mechanism 3 is fixedly installed at the center of the tank cover 2. A water tank 4 is movably connected to the right side of the stirring tank 1. A driving motor 5 is fixedly installed at the top of the water tank 4. The driving motor 5 is used to drive the stirring mechanism 3. A cleaning ring 6 is fixedly installed at the top end inside the stirring tank 1. The cleaning ring 6 cleans the inside of the stirring tank 1, and the water tank 4 provides water source for the cleaning ring 6;

[0030] First, please refer to Figure 1 、 Figure 2 、 Figure 3 and Figure 4 . The specific structure of the stirring mechanism 3 is as follows:

[0031] The stirring mechanism 3 includes a central shaft 301, a spiral blade 302, a first bevel gear 303, an outer sleeve 304 and stirring fan blades 305. The central shaft 301 is rotatably connected to the center of the tank cover 2. The spiral blade 302 is fixedly connected to the outside of the central shaft 301. The spiral blade 302 spirals from the top end to the bottom end of the central shaft 301. The first bevel gear 303 is fixedly connected to the top end of the central shaft 301. The outer sleeve 304 is sleeved on the outside of the spiral blade 302 and its top is fixedly connected to the tank cover 2. Four groups of stirring fan blades 305 are all fixedly connected to the bottom end of the central shaft 301. During the use of the device, the first bevel gear 303 rotates driven by the driving motor 5. When the first bevel gear 303 rotates, it drives the central shaft 301 to rotate. When the central shaft 301 rotates, it drives the spiral blade 302 and the stirring fan blades 305 to rotate simultaneously, so as to stir the polyurethane raw materials inside the stirring tank 1.

[0032] Among them, please refer to Figure 2 and Figure 3 . Two rows of through holes 306 are evenly arranged at the top end of the outer sleeve 304. The bottom end of the outer sleeve 304 is located above the four groups of stirring fan blades 305. There is a gap between the bottom end of the outer sleeve 304 and the four groups of stirring fan blades 305. During the stirring process of the polyurethane raw materials inside the stirring tank 1, the polyurethane raw materials with high density deposited at the bottom of the stirring tank 1 will flow in from the gap at the bottom end of the outer sleeve 304. The spiral blade 302 conveys the raw materials at the bottom of the stirring tank 1 upward during rotation, and then flows out from the two rows of through holes 306 at the top end of the outer sleeve 304 to the upper part of the raw materials inside the stirring tank 1, thus forming an internal circulation to make the mixing of various raw materials more uniform.

[0033] Furthermore, please refer to Figure 1 、 Figure 2 and Figure 3 . A second bevel gear 7 is fixedly connected to the output end of the driving motor 5. The second bevel gear 7 is engaged with the first bevel gear 303. The use of bevel gear meshing makes the connection more stable and ensures the more stable operation of the stirring mechanism 3.

[0034] Further, please refer to Figure 1 , Figure 2 and Figure 4 , a feed hopper 8 is fixedly connected to the left end of the top of the tank lid 2. The feed hopper 8 is used to add raw materials. A water delivery pipe 9 is fixedly connected to the right end of the top of the tank lid 2. The right end of the water delivery pipe 9 is fixedly connected to the water tank 4. The cleaning ring 6 is fixedly connected to the water delivery pipe 9. A number of water outlet holes 12 are evenly formed on the surface of the cleaning ring 6. The cleaning ring 6 is designed in a ring shape. The number of water outlet holes 12 can make the water flow in the cleaning ring 6 spray out evenly. A water pump 13 is fixedly installed inside the water tank 4. The output end of the water pump 13 is fixedly connected to the water delivery pipe 9. After the device is used up, the stirring tank 1 needs to be cleaned. The water pump 13 pumps out the water source in the water tank 4, then transmits it to the cleaning ring 6 through the water delivery pipe 9, and finally sprays out evenly from a number of water outlet holes 12 to clean the stirring tank 1.

[0035] Further, please refer to Figure 1 and Figure 2 , a discharge pipe 10 is fixedly connected to the bottom of the stirring tank 1. A gate valve 11 is fixedly connected to the left end of the discharge pipe 10. After the polyurethane raw materials are mixed, they are discharged from the discharge pipe 10.

[0036] Working process of the present utility model:

[0037] During the use of the device, the first bevel gear 303 rotates under the drive of the drive motor 5. When the first bevel gear 303 rotates, it drives the central shaft 301 to rotate. When the central shaft 301 rotates, it simultaneously drives the spiral blade 302 and the stirring fan blade 305 to rotate, so as to stir the polyurethane raw materials inside the stirring tank 1. During the process of stirring the polyurethane raw materials inside the stirring tank 1, the polyurethane raw materials with high density deposited at the bottom of the stirring tank 1 will flow in from the gap at the bottom end of the outer sleeve 304. The spiral blade 302 conveys the raw materials at the bottom of the stirring tank 1 upward during rotation, and then flows out from the two rows of through holes 306 at the top end of the outer sleeve 304 to the upper part of the raw materials inside the stirring tank 1, thus forming an internal circulation to make the mixing of various raw materials more uniform.

[0038] After the device is used up, the stirring tank 1 needs to be cleaned. The water pump 13 pumps out the water source in the water tank 4, then transmits it to the cleaning ring 6 through the water delivery pipe 9, and finally sprays out evenly from a number of water outlet holes 12 to clean the stirring tank 1.

[0039] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A polyurethane raw material circulation mixing device, comprising a stirring tank (1), characterized in that: A tank cover (2) is installed on the top of the stirring tank (1), a stirring mechanism (3) is fixedly installed at the center of the tank cover (2), a water tank (4) is movably connected to the right side of the stirring tank (1), a driving motor (5) is fixedly installed on the top of the water tank (4), and a cleaning ring (6) is fixedly installed at the top of the stirring tank (1); The stirring mechanism (3) comprises a central shaft (301), a spiral blade (302), a first bevel gear (303), an outer sleeve (304) and stirring blades (305); the central shaft (301) is rotatably connected to the center of the tank cover (2); the spiral blade (302) is fixedly connected to the outside of the central shaft (301); the first bevel gear (303) is fixedly connected to the top of the central shaft (301); the outer sleeve (304) is sleeved on the outside of the spiral blade (302) and the top is fixedly connected to the tank cover (2); and the four groups of stirring blades (305) are all fixedly connected to the bottom of the central shaft (301); Two rows of through holes (306) are evenly formed at the top of the outer sleeve (304), and the bottom of the outer sleeve (304) is located above the four groups of stirring blades (305).

2. A polyurethane raw material circulation mixing device according to claim 1, characterized in that: A second bevel gear (7) is fixedly connected to the output end of the driving motor (5), and the second bevel gear (7) is meshed with the first bevel gear (303) for use.

3. A polyurethane raw material circulation mixing device according to claim 1, characterized in that: The left end of the top of the tank cover (2) is fixedly connected to a feed hopper (8), the right end of the top of the tank cover (2) is fixedly connected to a water pipe (9), and the right end of the water pipe (9) is fixedly connected to a water tank (4).

4. A polyurethane raw material circulation mixing device according to claim 1, characterized in that: A discharge pipe (10) is fixedly connected to the bottom of the stirring tank (1), and a gate valve (11) is fixedly connected to the left end of the discharge pipe (10).

5. A polyurethane raw material circulation mixing device according to claim 3, characterized in that: The cleaning ring (6) is fixedly connected to the water delivery pipe (9), and a plurality of water outlet holes (12) are evenly opened on the surface of the cleaning ring (6).

6. A polyurethane raw material circulation mixing device according to claim 3, characterized in that: A water pump (13) is fixedly installed inside the water tank (4), and the output end of the water pump (13) is fixedly connected to the water delivery pipe (9).

Images