Sol device for polyurethane adhesive production

Abstract

This utility model relates to the field of polyurethane adhesive production technology, and in particular to a solvent-gel device for polyurethane adhesive production. The device includes an outer cylinder, an inner cylinder fixedly connected inside the outer cylinder, and a cooling chamber formed between the outer and inner cylinders. A top cover is installed on the top of the outer cylinder, and a pump is fixedly connected to the upper surface of the top cover. An exhaust pipe is fixedly connected to the input end of the pump, extending its bottom into the inner cylinder. An exhaust pipe is fixedly connected to the output end of the pump, and a spiral tube is fixedly connected to the end of the exhaust pipe away from the pump. The spiral tube is located inside the cooling chamber, and a discharge pipe is fixedly connected to the end of the spiral tube, extending its end away from the spiral tube to the outside of the outer cylinder. This utility model condenses and collects substances such as acetone in the gases emitted during the polyurethane adhesive solvent-gel process, reducing the harm of the emitted gases to the human body and facilitating resource recycling.

Description

Technical Field

[0001] This utility model relates to the field of polyurethane adhesive production, and in particular to a solvent apparatus for polyurethane adhesive production. Background Technology

[0002] In the production of polyurethane adhesives, the sol-gel process requires mixing, dissolving, and dispersing raw materials (such as polyurethane prepolymers, solvents, fillers, and additives) to form a uniform adhesive solution. The control of this process directly affects the viscosity, stability, curing performance, and final bond strength of the adhesive.

[0003] The solvent is required to help polyurethane adhesives to form a sol-gel. However, substances such as acetone in the solvent are volatile. If the gas generated during the sol-gel process is directly discharged, it will not only harm the health of the surrounding workers, but also waste resources. Utility Model Content

[0004] In view of this, the present invention provides a sol-gel device for the production of polyurethane adhesives. The main technical problem to be solved is to condense and collect substances such as acetone in the gas discharged during the polyurethane adhesive sol-gel process, thereby reducing the harm of the discharged gas to the human body and facilitating resource recycling.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a sol-gel device for producing polyurethane adhesive, comprising an outer cylinder, an inner cylinder fixedly connected inside the outer cylinder, a cooling chamber formed between the outer cylinder and the inner cylinder, a top cover installed on the top of the outer cylinder, a pump fixedly connected to the upper surface of the top cover, an air extraction pipe fixedly connected to the input end of the pump, the bottom of the air extraction pipe extending into the interior of the inner cylinder, an exhaust pipe fixedly connected to the output end of the pump, a spiral tube fixedly connected to the end of the exhaust pipe away from the pump, the spiral tube being located inside the cooling chamber, a discharge pipe fixedly connected to the end of the spiral tube, and the end of the discharge pipe away from the spiral tube extending to the outside of the outer cylinder.

[0006] By adopting the above technical solution, the raw materials are added into the inner cylinder for sol-gel operation. The pump is started, and the gas inside the inner cylinder is extracted to maintain a negative pressure state. This prevents gas leakage from the gaps inside the inner cylinder. At the same time, maintaining a negative pressure state inside the inner cylinder can eliminate tiny air bubbles inside the adhesive during the polyurethane adhesive sol-gel process. The extracted air enters the spiral tube through the exhaust pipe and condenses, allowing the acetone in the air to be re-liquefied and collected. Cooling water is added to the cooling chamber formed between the outer and inner cylinders to cool the inner cylinder and absorb the heat generated during the polyurethane adhesive sol-gel process. At the same time, it can also cool the spiral tube, facilitating the condensation of acetone and other substances inside the spiral tube.

[0007] As a further description of the above technical solution:

[0008] A motor is fixedly connected to the upper surface of the cover, a rotating shaft is fixedly connected to the output end of the motor, and a stirring blade is fixedly connected to the outer surface of the rotating shaft. The stirring blade is located inside the inner cylinder.

[0009] By adopting the above technical solution, the motor drives the rotating shaft to rotate, which in turn drives the stirring blades to rotate, thus enabling the raw materials inside the inner cylinder to be stirred and mixed.

[0010] As a further description of the above technical solution:

[0011] The surface of the upper cover has a feed inlet, and a sealing cap is installed inside the feed inlet.

[0012] By adopting the above technical solution, the raw material is added into the inner cylinder through the feed inlet, and the feed inlet can be sealed by the sealing cap to reduce the leakage of gas inside the inner cylinder.

[0013] As a further description of the above technical solution:

[0014] The bottom of the inner cylinder is fixedly connected to a discharge pipe, the bottom of which extends to the bottom of the outer cylinder, and a control valve is installed inside the discharge pipe.

[0015] By adopting the above technical solution, the polyurethane adhesive is discharged through the discharge pipe after being slurried.

[0016] As a further description of the above technical solution:

[0017] A water outlet pipe is fixedly connected to the outer surface of the outer cylinder, and the right end of the water outlet pipe extends into the interior of the cooling chamber.

[0018] By adopting the above technical solution, the cooling water inside the cooling chamber is discharged through the water outlet pipe.

[0019] As a further description of the above technical solution:

[0020] A water inlet pipe is fixedly connected to the outer surface of the outer cylinder, and the left end of the water inlet pipe extends into the interior of the cooling chamber.

[0021] By adopting the above technical solution, cooling water inside the cooling chamber is injected into the cooling chamber through the water inlet pipe.

[0022] As a further description of the above technical solution:

[0023] The bottom of the outer cylinder is fixedly connected to a foot, and there are multiple footes.

[0024] By adopting the above technical solution, it is easy to use the outer cylinder standing upright.

[0025] By employing the above technical solution, the sol-gel device for producing polyurethane adhesives of this utility model has at least the following beneficial effects:

[0026] 1. Compared with the prior art, the sol-gel device for polyurethane adhesive production uses a pump to extract gas from the inner cylinder, keeping the inner cylinder under negative pressure. This prevents gas leakage from the gaps in the inner cylinder and eliminates tiny air bubbles inside the adhesive during the polyurethane adhesive sol-gel process. The extracted air enters the spiral tube through the exhaust pipe and condenses, allowing the acetone in the air to be reliquefied and collected.

[0027] 2. Compared with the prior art, the sol-gel device for producing polyurethane adhesives can cool the inner cylinder by adding cooling water into the cooling chamber formed between the outer cylinder and the inner cylinder. This can absorb the heat generated during the polyurethane adhesive sol-gel process and also cool the spiral tube, facilitating the condensation of substances such as acetone inside the spiral tube. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the overall structure from a first-view perspective of the present invention.

[0029] Figure 2 This is a schematic diagram of the overall structure from a second perspective proposed in this utility model;

[0030] Figure 3 This is a cross-sectional view of the internal structure proposed in this utility model;

[0031] Figure 4 This is a schematic diagram of the internal structure proposed in this utility model.

[0032] Legend:

[0033] 1. Outer cylinder; 2. Inner cylinder; 3. Top cover; 4. Motor; 5. Shaft; 6. Agitator blade; 7. Feed inlet; 8. Sealing cover; 9. Pump; 10. Air extraction pipe; 11. Exhaust pipe; 12. Spiral pipe; 13. Discharge pipe; 14. Material outlet pipe; 15. Water outlet pipe; 16. Water inlet pipe. Detailed Implementation

[0034] Reference Figure 1-4This utility model provides a solvent apparatus for the production of polyurethane adhesives, comprising an outer cylinder 1, with an inner cylinder 2 fixedly connected inside the outer cylinder 1. During use, raw materials are added to the inner cylinder 2 for solvent extraction. A cooling chamber is formed between the outer cylinder 1 and the inner cylinder 2. Cooling water is added to the cooling chamber to cool the inner cylinder 2 and absorb the heat generated during the solvent extraction process of the polyurethane adhesive. A top cover 3 is installed on the top of the outer cylinder 1, and a pump 9 is fixedly connected to the upper surface of the top cover 3. An exhaust pipe 10 is fixedly connected to the input end of the pump 9, and the bottom of the exhaust pipe 10 extends into the interior of the inner cylinder 2. An exhaust pipe 11 is fixedly connected to the output end of the pump 9, and the end of the exhaust pipe 11 away from the pump 9 is fixedly connected to... A spiral tube 12 is connected to the inner cylinder 2, which is located inside the cooling chamber. A discharge pipe 13 is fixedly connected to the end of the spiral tube 12. The end of the discharge pipe 13 away from the spiral tube 12 extends to the outside of the outer cylinder 1. The pump 9 is started to extract the gas inside the inner cylinder 2, keeping the inner cylinder 2 under negative pressure. This prevents the gas inside the inner cylinder 2 from leaking out through the gaps. At the same time, the negative pressure inside the inner cylinder 2 can eliminate the tiny air bubbles inside the adhesive during the polyurethane adhesive sol-gel process. The extracted air enters the spiral tube 12 through the exhaust pipe 11 and condenses, allowing the acetone in the air to be reliquefied and collected. The cooling water inside the cooling chamber can cool the spiral tube 12, facilitating the condensation of acetone and other substances inside the spiral tube 12.

[0035] A motor 4 is fixedly connected to the upper surface of the cover 3. A rotating shaft 5 is fixedly connected to the output end of the motor 4. A stirring blade 6 is fixedly connected to the outer surface of the rotating shaft 5. The stirring blade 6 is located inside the inner cylinder 2. The motor 4 drives the rotating shaft 5 to rotate, which in turn drives the stirring blade 6 to rotate, thus stirring and mixing the raw materials inside the inner cylinder 2.

[0036] The surface of the upper cover 3 is provided with a feed inlet 7, and a sealing cover 8 is installed inside the feed inlet 7. The raw material is added into the inner cylinder 2 through the feed inlet 7. The sealing cover 8 can seal the feed inlet 7 to reduce the leakage of gas inside the inner cylinder 2. The bottom of the inner cylinder 2 is fixedly connected to the discharge pipe 14, and the bottom of the discharge pipe 14 extends to the bottom of the outer cylinder 1. A control valve is installed inside the discharge pipe 14. The adhesive after the polyurethane adhesive is melted is discharged through the discharge pipe 14.

[0037] A water outlet pipe 15 is fixedly connected to the outer surface of the outer cylinder 1. The right end of the water outlet pipe 15 extends into the interior of the cooling chamber, and the cooling water inside the cooling chamber is discharged through the water outlet pipe 15. A water inlet pipe 16 is fixedly connected to the outer surface of the outer cylinder 1. The left end of the water inlet pipe 16 extends into the interior of the cooling chamber, and the cooling water inside the cooling chamber is injected into the cooling chamber through the water inlet pipe 16.

[0038] The bottom of the outer cylinder 1 is fixedly connected with multiple feet to facilitate the use of the outer cylinder 1 in a standing position.

[0039] Working principle: During use, the raw materials are added into the inner cylinder 2 for sol-gel operation. The pump 9 is started, and the pump 9 extracts the gas inside the inner cylinder 2, keeping the inner cylinder 2 under negative pressure. This prevents the gas inside the inner cylinder 2 from leaking out through the gaps. At the same time, the negative pressure inside the inner cylinder 2 eliminates tiny air bubbles inside the adhesive during the polyurethane adhesive sol-gel process. The extracted air enters the spiral tube 12 through the exhaust pipe 11 and condenses, allowing the acetone in the air to be re-liquefied and collected. Cooling water is added to the cooling chamber formed between the outer cylinder 1 and the inner cylinder 2 to cool the inner cylinder 2, absorb the heat generated during the polyurethane adhesive sol-gel process, and also cool the spiral tube 12, facilitating the condensation of acetone and other substances inside the spiral tube 12.

[0040] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A sol-gel apparatus for producing polyurethane adhesives, comprising an outer cylinder (1), characterized in that: An inner cylinder (2) is fixedly connected inside the outer cylinder (1), and a cooling chamber is formed between the outer cylinder (1) and the inner cylinder (2). A top cover (3) is installed on the top of the outer cylinder (1), and a pump (9) is fixedly connected to the upper surface of the top cover (3). An air extraction pipe (10) is fixedly connected to the input end of the pump (9), and the bottom of the air extraction pipe (10) extends into the interior of the inner cylinder (2). An exhaust pipe (11) is fixedly connected to the output end of the pump (9), and a spiral tube (12) is fixedly connected to the end of the exhaust pipe (11) away from the pump (9). The spiral tube (12) is located inside the cooling chamber, and a discharge pipe (13) is fixedly connected to the end of the spiral tube (12). The end of the discharge pipe (13) away from the spiral tube (12) extends to the outside of the outer cylinder (1).

2. The sol-gel apparatus for producing polyurethane adhesives according to claim 1, characterized in that: A motor (4) is fixedly connected to the upper surface of the cover (3), and a rotating shaft (5) is fixedly connected to the output end of the motor (4). A stirring blade (6) is fixedly connected to the outer surface of the rotating shaft (5), and the stirring blade (6) is located inside the inner cylinder (2).

3. The sol-gel apparatus for producing polyurethane adhesives according to claim 1, characterized in that: The surface of the upper cover (3) is provided with a feed inlet (7), and a sealing cover (8) is installed inside the feed inlet (7).

4. The sol-gel apparatus for producing polyurethane adhesives according to claim 1, characterized in that: The bottom of the inner cylinder (2) is fixedly connected to a discharge pipe (14), the bottom of which extends to the bottom of the outer cylinder (1), and a control valve is installed inside the discharge pipe (14).

5. The sol-gel apparatus for producing polyurethane adhesives according to claim 1, characterized in that: The outer surface of the outer cylinder (1) is fixedly connected to a water outlet pipe (15), and the right end of the water outlet pipe (15) extends into the interior of the cooling chamber.

6. The sol-gel apparatus for producing polyurethane adhesives according to claim 1, characterized in that: The outer surface of the outer cylinder (1) is fixedly connected to a water inlet pipe (16), and the left end of the water inlet pipe (16) extends into the interior of the cooling chamber.

7. The sol-gel apparatus for producing polyurethane adhesives according to claim 1, characterized in that: The bottom of the outer cylinder (1) is fixedly connected with a foot, and there are multiple feet.

Images