Insertion Machine: Problems in the domestic application of soil source heat pump

Due to differences in economic development and climatic and geographical conditions, there are still many technical problems to be solved in the promotion of soil source heat pump technology in China. After more than ten years of research, some achievements have been made by domestic researchers, but on the whole, the research of ground source heat pump in China is still at a low level. Although theoretically speaking, our research is based on the "shoulders of others", it should have obvious "backward advantage" but it is not. To sum up, there are roughly two reasons for this:

a) Lack of adequate practical engineering applications

The ground source heat pump application in our country is not as good as expected, the main reason is the lack of practical engineering applications, the only case of a closed system in our country or foreign engineers design. Even so, the effect of this only practical project has not been unanimously approved by the domestic industry. Open systems are used in some provinces in the north of our country, but the open systems have problems of undermining groundwater resources and so on, making it difficult to have good application prospects. Designers and owners do not have enough enthusiasm to use ground source heat pump - there is no practical application of demand, making such a more mature technology in foreign countries still appears to be "very advanced" in China, only universities and research institutes as an application Research programs and ideas, it is difficult to form a large-scale research and industrialization of the environment. Because there is no business participation, so

Research funding for research is more stretched, can not really come up with practical research results.

b) The research is out of step with the actual engineering application

By contacting many people in the country who participated in the study of soil source heat pump, from the understanding of the situation, repeated research is more serious. By collecting and reading foreign public reports of almost all related ground-source heat pumps and comparing them with those of the National Natural Science Foundation of China ("GSHP") and other related topics and other research projects carried out domestically, it was found that domestic ground-source heat pumps Related topics less theoretical innovation. On the other hand, domestic research, due to lack of proper communication, has many similarities in contents, including the repeated construction of test benches, resulting in the waste of resources and the devaluation of research results.

Moreover, since most of the topics are basically in the laboratory research stage, there is no value for engineering application and promotion. The practicality of the results developed under such conditions is hardly recognized by the business community and the owners. The majority of researchers in our country should carry out research on related basic theories and practical applications in a more pragmatic spirit of science and cooperation.

Although the current research on the ground-source heat pump in China is worrisome, the application prospect of the ground-source heat pump is still very good. Many large foreign companies and conglomerates, including government agencies, are hoping to promote the technologies and products of ground-source heat pumps in China. In June 2000, the United States Department of Energy (DOE) and China's State Science and Technology Commission jointly held a product promotion conference for ground-source heat pumps in Beijing. This is an exciting signal and a good start. I believe that after China's accession to the WTO, ground-source heat pump technology can have greater application in China and is accepted by the public.

Industrial Filter dusting Devices

Describe:

The dust separation equipment is called dust-removing device. The modern industrial dust removal device can be divided into filter barrel type air dust collector and bag type air dust collector. They are suitable for fine, dry, non-fibrous dust.

Principle and classification:

1. Filter cartridge dust devices:

The filter barrel is used as the filter element. After the dust gas enters the dust collector, due to the sudden expansion of the air section and the effect of the air distribution plate, some coarse particles in the air flow settle in the ash hopper in the action of kinetic energy and inertia force, and the particles are fine. When the dust with low density enters the filter chamber, the dust is deposited on the surface of the Filter Material through the combined effects of Brownian diffusion and interception, and the purified gas enters the clean air chamber and is discharged by the fan through the exhaust pipe.
The installation methods of filter cartridge include oblique insertion type, side mounted type, lifting type, top type, filter tube material can be divided into long fiber polyester filter, composite fiber polyester filter, antistatic fiber filter, flame retardant fiber filter, high temperature resistant fiber filter, etc.

The material can be divided into long fiber polyester filter, composite fiber polyester filter, anti static fiber filter, flame-retardant fiber filter, high temperature resistant fiber filter and so on.

The structure of the filter tube type dust collector is composed of air inlet tube, exhaust tube, box body, ash hopper, ash cleaning device, flow guide device, air distribution plate, filter tube and electric control device.

1. Bag filter dust devices:

Bag filter is a kind of dry filter device. The filter bag is usually made of textile filter cloth or non-textile felt. The filter function of fiber fabric is used to filter the dust containing gas. When the dust gas enters the bag filter, the particles are large. The dust with large specific gravity is deposited by gravity and falls into the ash hopper. When the gas containing smaller dust passes through the filter material, the dust is captured and intercepted, and the gas is purified.

Bag dust collector structure is mainly composed of upper box, middle box, lower box (ash hopper), ash removal system and ash removal mechanism. In addition to the proper selection of bag material, the cleaning system plays a decisive role in bag dust collector. Therefore, the ash removal method is one of the characteristics of the bag dust collector, and also an important part in the operation of the bag filter. Ash cleaning methods include: simple manual ash cleaning, mechanical vibration ash cleaning, reverse air ash cleaning and pulse injection soot cleaning and so on.

Industrial Filter dusting Devices dust-removing device Filter cartridge dust devices