Heater network heater inlet filter device

Abstract

The invention relates to an inlet screen device for a heating network heater, belonging to the field of filtration technology and aims to add a set of the inlet screen device for the heating network heater, capable of filtering water medium, to the inlet of the conventional heating network heater. The inlet screen device for the heating network heater is characterized in that a filter screen main body shell is arranged in a collection well, wherein an filter screen front-end inlet / outlet reduction sleeve is mounted at the front end of the filter screen main body shell, and a filter screen tail-end inlet / outlet reduction sleeve is mounted at the rear end of the filter screen main body shell; a filter screen is a cone body, and the big head of the cone body of the filter screen is mounted at the filter screen tail-end inlet / outlet reduction sleeve; a cross-shaped grid is mounted at one side of the filter screen front-end inlet / outlet reduction sleeve of the filter screen main body shell; an inlet pipe is arranged on the outer wall of the collection well, and a pollution discharge door with a valve is arranged at the tail end of the collection well; pressure gauges are mounted on both the filter screen front-end inlet / outlet reduction sleeve and the inlet pipe. The inlet screen device for the heating network heater has the advantages that the structure is simple, the manufacturing and the mounting are simple and convenient, the operability is strong; the cleaning safety under an operational state is guaranteed; and the inlet screen device has functions of excluding impurities in an online manner and backwashing, so that the blocking probability of pipe bundles of the heater is reduced, the blockage of the filter screen can be further prevented, and a heat transfer effect is guaranteed.

Description

technical field [0001] The invention belongs to the technical field of filtration. Background technique [0002] With the improvement of the country's ecological and environmental quality standards and the reduction of harmful substance emissions, higher requirements are placed on the safety and stability of central heating management and operating equipment. As an important part of the heating system, the heating network heater, It is the key equipment to ensure the heating quality of heat users. Its operating performance directly affects the safety and economy of the system. The existing heating network heaters are not equipped with inlet filter devices, and the water medium directly enters the heater tube bundle. Circulating supply to heat users. [0003] Its main disadvantages are: [0004] 1. Metal oxides, gravel, sediment and other sundries in the return water of the heating network cause blockage of the tube bundle and lose the heat exchange function. [0005] 2. I...

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Problems solved by technology

[0010] The present invention aims at the ubiquitous problems of heating network heaters during the heating period, such as frequent blockage of tube bundles, large pressure difference between the inlet and outlet of the water side, low heat exchange efficiency, affecting the quality of heating supply, threatening the safe and stable operation of the system, and so on. The feasibility of the inlet filter is demonstrated. The designed filter is simple in structure, easy to manufacture and install, and strong in operability, ensuring the safety of cleaning under operating conditions. The clogging probability of the tube bundle can prevent the clogging of the filter screen and ensure the heat exchange effect

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