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A polyurethane foaming machine driven by a water-cooled engine

A water-cooled engine and polyurethane technology, which is applied in the field of polyurethane foaming machines, can solve problems such as material overheating, foam plastic quality degradation, and material overheating and deterioration, and achieve reliable material temperature control, compact structure, and high energy utilization efficiency.

Inactive Publication Date: 2015-08-05
中国人民解放军63975部队 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the actual use of the polyurethane foam machine, there may be intermittent periods of operation, and in some cases even a long period of intermittent operation. This solution may cause the materials remaining in the heat exchanger to overheat during the intermittent period of operation, resulting in Problems such as overheating and deterioration, the quality of foam plastics, etc.

Method used

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  • A polyurethane foaming machine driven by a water-cooled engine
  • A polyurethane foaming machine driven by a water-cooled engine
  • A polyurethane foaming machine driven by a water-cooled engine

Examples

Experimental program
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Effect test

Embodiment 1

[0042] Such as figure 1 with figure 2 As shown, the present invention proposes a polyurethane foam machine driven by a water-cooled engine. The system consists of a water-cooled engine 11 , a polyurethane foam unit 9 and a power station 10 .

[0043] The water-cooled engine 11 includes an engine coolant channel 12, an external booster water pump 13, a temperature-controlled three-way reversing valve 14 for a hot water tank, a hot water tank 15, a thermostat 16, a radiator 17, and a fan 18. 1. A water cooling system composed of connecting pipeline 20 and cooling liquid 8.

[0044] The water cooling system can implement three coolant circulations, wherein: after the water-cooled engine 11 is started, the first coolant circulation is first started, and the coolant flows out from the engine coolant passage 12 driven by the external booster water pump 13, and is taken The temperature-controlled three-way reversing valve 14 of the hot water tank enters the hot water tank 15, and ...

Embodiment 2

[0060] Such as image 3 As shown, on the basis of Example 1, this embodiment adds a material A temperature-controlled three-way reversing valve 23A, a material B temperature-controlled three-way reversing valve 23B, a material A mixer 26A, and a material B mixer 26B.

[0061] When the temperature of material A is higher than the set temperature, the temperature control three-way reversing valve 23A of the material A is reversed, and the material A directly flows to the material A mixer 26A without heating, and when the temperature is lower than the set temperature, The temperature control three-way reversing valve 23A of the material A is reset, and the material A flows to the material A mixer 26A after being heated by the material A heat exchanger 24A. After mixing by the material mixer 24A, it becomes a material with a uniform temperature, and the segmented conveyance of the material A is controlled by a PID controller, so as to further improve the control accuracy of the te...

Embodiment 3

[0064] Such as Figure 4 As shown, on the basis of Embodiment 1, this embodiment adds an exhaust gas heating system, including an exhaust gas temperature control three-way reversing valve 41, an exhaust gas heating tank 42, an exhaust gas heat exchanger 45, a water pump 44, and an exhaust gas heating system. Three-way reversing valve 43.

[0065] The temperature of the exhaust gas hot water tank 42 is controlled by the exhaust three-way reversing valve 41. After the water-cooled engine starts, the exhaust gas enters the exhaust gas heat exchanger 45 through the exhaust three-way reversing valve 41, and the exhaust gas hot water tank 42 is heated. After the temperature of the hot water tank 42 for tail gas reaches the set temperature, the three-way reversing valve 41 for tail gas changes direction, and the tail gas is discharged through the exhaust pipe.

[0066] The hot water tank 15 gets heat from the tail gas hot water tank 42 through the tail gas heat-taking temperature-co...

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Abstract

The invention relates to a polyurethane foaming machine driven by a water-cooled engine. The polyurethane foaming machine comprises the water-cooled engine, a polyurethane foaming unit and a power station, wherein a water cooling system of the water-cooled engine adopts three circulation ways to respectively control the temperature of a cooling liquid channel and a heat extraction water tank of the engine, the heat extraction water tank is used for heating a material A and a material B in the polyurethane foaming unit, heat exchange temperature control is further performed by adopting material circulating heating, sectional material conveying, tail gas heat extraction and other ways, and tests prove that the heat extraction water tank can provide sufficient heat and ensure heating, mixing and foaming molding of the raw materials; the power station is driven by the water-cooled engine, and the power requirements on the polyurethane foaming machine and matching equipment can be met. The whole set of the system has the advantages of high utilization efficiency of energy, reliable control of material temperature and compact structure, and is suitable for field use.

Description

technical field [0001] The invention relates to a polyurethane foaming machine, in particular to a polyurethane foaming machine driven by a water-cooled engine. Background technique [0002] Polyurethane is a polymer produced by copolymerization of isocyanate and polyol. Polyurethane products are divided into two categories: foamed products and non-foamed products: foamed products include soft, rigid and semi-rigid polyurethane foam; non-foamed products include coatings, adhesives, synthetic leather, elastomers and Elastic fibers etc. Polyurethane materials have excellent performance, wide range of uses, and various types of products, among which polyurethane foam is the most widely used, accounting for about 70% of the total consumption of polyurethane products. [0003] The polyurethane foaming machine is the core component of polyurethane foam processing equipment, which is used to achieve the mixing, metering and temperature control required for the polymerization reac...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C44/00B29C44/60
Inventor 邹传品王普慧华军钟辉华成璞刘波何小伟孟令卿孟祥燕焦剑岚
Owner 中国人民解放军63975部队