Foaming machine for processing polyurethane thermal insulation pipe

Abstract

The utility model discloses a foaming machine for processing a polyurethane thermal insulation pipe, which comprises a foaming barrel, a foaming discharge pipe is mounted below the foaming barrel, a second electric control valve is mounted on the right side of the foaming discharge pipe, and a fourth electric control valve is mounted on the left side below the foaming discharge pipe. A recycling water pump is installed on the left side of the fourth electric control valve, a first communicating pipe is installed at the output end of the recycling water pump, a recycling barrel is installed on the left side of the foaming barrel, a recycling discharge pipe is installed below the recycling barrel, and a third electric control valve is installed below the recycling discharge pipe. And a third communicating pipe is installed on the left side of the recycling and discharging pipe, and a circulating water pump is installed on the left side of the third communicating pipe. According to the foaming machine for processing the polyurethane thermal insulation pipe, the recycling barrel is communicated with the foaming barrel to form a circulating structure, so that a cleaning agent which is not used thoroughly can be recycled for next use, and waste of the cleaning agent and environmental pollution are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of foam machines, in particular to a foam machine for processing polyurethane insulation pipes. Background Technique

[0002] The polyurethane insulation pipe, whose full name is the prefabricated directly buried insulation pipe with high-density polyethylene plastic outer protection and polyurethane foam, is composed of a working steel pipe for conveying medium, a polyurethane insulation layer, and a polyethylene plastic outer protection pipe, which are combined outward in sequence by equipment. The reason for using a foam machine in the processing of polyurethane insulation pipes is that the foam machine is a special equipment for pouring and foaming polyurethane foam plastics and can produce uniform and qualified foam products. During the processing of polyurethane insulation pipes, the foam machine reacts the isocyanate in the polyurethane raw material with polyol to generate gas, causing the polyurethane raw material to expand and foam to form a closed-cell structure, thereby achieving the effect of heat insulation. This foaming process is a key step in the production of prefabricated polyurethane insulation pipes and is achieved by the foam machine.

[0003] Chinese authorized announcement number CN220864572U discloses a high-pressure foam machine for insulation pipes, including a support base. On the left and right sides of the rear end of the upper part of the support base, high-pressure foam barrels are respectively bolted and fixed. An air compressor is bolted and fixed inside the support base. The air outlet of the air compressor is threadedly connected with a connecting pipe. It is characterized in that automatic opening and closing valves are respectively installed on the left and right sides of the upper part of the connecting pipe. An electrical controller is bolted and fixed at the front end of the upper part of the support base. A quick-connect pipe structure is installed on the right side of the electrical controller, and a foaming agent transmission pipe is arranged on the right side of the quick-connect pipe structure. The beneficial effect of the utility model is that through the setting of the air inlet pipe, the sealing pipe, the compression spring, the opening and closing piston and the sealing baffle, it is beneficial to automatically open and close the valve, and it is the same as the start and stop of the air compressor, without the need for staff to check.

[0004] After each use, the existing foam machine needs to use a solvent to clean the mixing chamber, generating a large amount of waste solvent cleaning liquid. This not only wastes the solvent but also may cause environmental pollution and increase the environmental protection cost. For this reason, we propose a foam machine for processing polyurethane insulation pipes. Content of the Utility Model

[0005] The purpose of the utility model is to provide a foam machine for processing polyurethane insulation pipes to solve the problem that after each use, the existing foam machine needs to use a solvent to clean the mixing chamber, generating a large amount of waste solvent cleaning liquid, which not only wastes the solvent but also may cause environmental pollution and increase the environmental protection cost mentioned in the above background technique.

[0006] To achieve the above object, the present utility model provides the following technical solutions: A foaming machine for processing polyurethane insulation pipes, including a foaming barrel, a foaming discharge pipe is installed below the foaming barrel, a second electric control valve is installed on the right side of the foaming discharge pipe, a fourth electric control valve is installed on the lower left side of the foaming discharge pipe, a recycling water pump is installed on the left side of the fourth electric control valve, a first connecting pipe is installed at the output end of the recycling water pump, a recycling barrel is installed on the left side of the foaming barrel, a recycling discharge pipe is installed below the recycling barrel, a third electric control valve is installed below the recycling discharge pipe, a third connecting pipe is installed on the left side of the recycling discharge pipe, a circulating water pump is installed on the left side of the third connecting pipe, a second connecting pipe is installed at the output end of the circulating water pump, a first electric control valve is installed at the other end of the circulating water pump, and a filter screen is installed inside the recycling barrel.

[0007] Preferably, the foaming barrel is communicated with the foaming discharge pipe, and the foaming discharge pipe is communicated with the input end of the recycling water pump through the fourth electric control valve.

[0008] Preferably, the recycling water pump is communicated with the recycling barrel through the first connecting pipe.

[0009] Preferably, the recycling discharge pipe is communicated with the recycling barrel, and the recycling discharge pipe is connected to the input end of the circulating water pump through the third connecting pipe.

[0010] Preferably, the output end of the circulating water pump is communicated with the foaming barrel through the second connecting pipe and the first electric control valve.

[0011] Preferably, the foaming barrel further is provided with:

[0012] A stirring motor, which is installed above the foaming barrel, a transmission rod is installed at the output end of the stirring motor, and stirring blades are installed on the outer surface of the transmission rod.

[0013] Preferably, the stirring blades are evenly distributed along the outer surface of the transmission rod, and the stirring blades are rotated inside the foaming barrel through the stirring motor and the transmission rod.

[0014] Compared with the prior art, the present utility model provides a foaming machine for processing polyurethane insulation pipes, having the following beneficial effects: This foaming machine for processing polyurethane insulation pipes is provided with a recycling barrel communicated with the foaming barrel to form a circulating structure, so as to facilitate the recycling of the incompletely used cleaning agent for the next use, avoiding the waste of the cleaning agent and environmental pollution. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the present utility model;

[0016] Figure 2This is a schematic diagram of the connection structure between the foaming barrel and the recycling barrel of the present utility model.

[0017] In the figure: 1. Foaming barrel; 2. Stirring motor; 3. First electric control valve; 4. First connecting pipe; 5. Second connecting pipe; 6. Recycling barrel; 7. Circulation water pump; 8. Third connecting pipe; 9. Second electric control valve; 10. Filter screen; 11. Third electric control valve; 12. Recycling discharge pipe; 13. Recycling water pump; 14. Fourth electric control valve; 15. Foaming discharge pipe; 16. Stirring blade; 17. Transmission rod. Specific embodiments

[0018] 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. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0019] Please refer to Figure 1-2, A foaming machine for processing polyurethane insulation pipes, including a foaming barrel 1. Below the foaming barrel 1, a foaming discharge pipe 15 is installed. On the right side of the foaming discharge pipe 15, a second electric control valve 9 is installed. On the lower left side of the foaming discharge pipe 15, a fourth electric control valve 14 is installed. On the left side of the fourth electric control valve 14, a recycling water pump 13 is installed; the foaming barrel 1 is connected to the foaming discharge pipe 15, and the foaming discharge pipe 15 is connected to the input end of the recycling water pump 13 through the fourth electric control valve 14. The output end of the recycling water pump 13 is installed with a first connecting pipe 4. On the left side of the foaming barrel 1, a recycling barrel 6 is installed; the recycling water pump 13 is connected to the recycling barrel 6 through the first connecting pipe 4. Below the recycling barrel 6, a recycling discharge pipe 12 is installed. Below the recycling discharge pipe 12, a third electric control valve 11 is installed. On the left side of the recycling discharge pipe 12, a third connecting pipe 8 is installed. On the left side of the third connecting pipe 8, a circulating water pump 7 is installed; the recycling discharge pipe 12 is connected to the recycling barrel 6, and the recycling discharge pipe 12 is connected to the input end of the circulating water pump 7 through the third connecting pipe 8. The output end of the circulating water pump 7 is installed with a second connecting pipe 5, and the other end of the circulating water pump 7 is installed with a first electric control valve 3; the output end of the circulating water pump 7 is connected to the foaming barrel 1 through the second connecting pipe 5 and the first electric control valve 3; by setting the recycling barrel 6 to be connected to the foaming barrel 1 to form a circulating structure, it is convenient to recycle the incompletely used cleaning agent for the next use, avoiding waste of the cleaning agent and environmental pollution. A filter screen 10 is installed inside the recycling barrel 6; a stirring motor 2, which is installed above the foaming barrel 1. The output end of the stirring motor 2 is installed with a transmission rod 17. The outer surface of the transmission rod 17 is installed with stirring blades 16; the stirring blades 16 are evenly distributed along the outer surface of the transmission rod 17, and the stirring blades 16 are rotated inside the foaming barrel 1 through the stirring motor 2 and the transmission rod 17.

[0020] Working principle: When using this foaming machine for processing polyurethane insulation pipes, first, the air compressor sends air into the inside of the foaming barrel 1. At the same time, the foaming agent is injected into the inside of the foaming barrel 1 to mix and react with the air to form foam, and then it is sprayed and used through the foaming gun connected to the second electric control valve 9. Secondly, when the foaming machine finishes using, the controller controls the first electric control valve 3 to open, and at the same time controls the circulating water pump 7 to work and pump the cleaning agent liquid inside the recycling barrel 6 into the inside of the foaming barrel 1 through the second connecting pipe 5. Then, the first electric control valve 3 is closed. Thirdly, the controller controls the stirring motor 2 to work, and drives the stirring blades 16 to rotate through the transmission rod 17, thereby stirring the cleaning agent liquid to rotate and clean the inside of the foaming barrel 1. After the cleaning is completed, the controller controls the fourth electric control valve 14 to open, and at the same time controls the recycling water pump 13 to work and pump the cleaning agent liquid inside the foaming barrel 1 back into the inside of the recycling barrel 6 through the first connecting pipe 4. The filter screen 10 filters the cleaning agent liquid. Then, when the cleaning agent liquid is completely used up, open the third electric control valve 11 to discharge the cleaning agent liquid. This is the working principle of this foaming machine for processing polyurethane insulation pipes.

[0021] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand 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 foaming machine for processing polyurethane insulation pipes, characterized in that, Including A foaming barrel (1), a foaming discharge pipe (15) is installed below the foaming barrel (1), a second electric control valve (9) is installed on the right side of the foaming discharge pipe (15), a fourth electric control valve (14) is installed on the lower left side of the foaming discharge pipe (15), a recycling water pump (13) is installed on the left side of the fourth electric control valve (14), a first connecting pipe (4) is installed at the output end of the recycling water pump (13), a recycling barrel (6) is installed on the left side of the foaming barrel (1), a recycling discharge pipe (12) is installed below the recycling barrel (6), a third electric control valve (11) is installed below the recycling discharge pipe (12), a third connecting pipe (8) is installed on the left side of the recycling discharge pipe (12), a circulating water pump (7) is installed on the left side of the third connecting pipe (8), a second connecting pipe (5) is installed at the output end of the circulating water pump (7), a first electric control valve (3) is installed at the other end of the circulating water pump (7), and a filter screen (10) is installed inside the recycling barrel (6).

2. The foaming machine for processing polyurethane insulation pipes according to claim 1, characterized in that, The foaming barrel (1) is communicated with the foaming discharge pipe (15), and the foaming discharge pipe (15) is communicated with the input end of the recycling water pump (13) through the fourth electric control valve (14).

3. The foaming machine for processing polyurethane insulation pipes according to claim 1, characterized in that, The recycling water pump (13) is communicated with the recycling barrel (6) through the first connecting pipe (4).

4. A foaming machine for processing polyurethane insulation pipes according to claim 1, characterized in that, The recycling discharge pipe (12) is communicated with the recycling barrel (6), and the recycling discharge pipe (12) is connected with the input end of the circulating water pump (7) through the third connecting pipe (8).

5. A foaming machine for processing polyurethane insulation pipes according to claim 1, characterized in that, The output end of the circulating water pump (7) is communicated with the foaming barrel (1) through the second connecting pipe (5) and the first electric control valve (3).

6. A foaming machine for processing polyurethane insulating pipes according to claim 1, characterized in that, The foaming barrel (1) is further provided with A stirring motor (2), which is installed above the foaming barrel (1), a transmission rod (17) is installed at the output end of the stirring motor (2), and stirring blades (16) are installed on the outer surface of the transmission rod (17).

7. The foaming machine for processing polyurethane insulating pipes according to claim 6, characterized in that, The stirring blades (16) are evenly distributed along the outer surface of the transmission rod (17), and the stirring blades (16) are rotated inside the foaming barrel (1) through the stirring motor (2) and the transmission rod (17).

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