Novel composite filter for blocking silt and particles smaller than silt

Abstract

The invention discloses a novel composite filter for blocking silt and particles smaller than the silt, belonging to the technical field of geothermal heating. The novel composite filter comprises a filter body, a first flow slowing plate, a second flow slowing plate, a sand removing mechanism, a water inlet pipe, a filtering unit, a water outlet pipe, a settling layer and a box door, wherein thewater inlet pipe is fixedly arranged on one side of the filter body, the water outlet pipe is fixedly arranged on the other side of the filter body, and the first flow slowing plate is movably arranged on the inner wall of the filter body. Through arrangement of the sand removing mechanism, the filter is enabled to settle micro-silt onto a sand guiding plate through the settling effect of the settling layer; after the filter is stopped, a baffle is pulled through an inserting block, and then the micro-silt is discharged through a silt discharging opening, so the filter effectively discharges the micro-silt filtered in the device and has a remarkable effect on particles which are difficult to treat in the centrifugal process of a cyclone desander, the high cost of a coarse filter and a precise filter can be saved, and the practicability of the filter is improved.

Description

technical field [0001] The invention relates to the technical field of geothermal heating, in particular to a novel composite filter that is blocked by silt and below particles. Background technique [0002] Geothermal energy is renewable heat energy from the interior of the earth. It originates from the magma in the interior of the earth and the decay of radioactive substances. The heat is conducted through the strata, and is continuously transferred from the lower high-temperature rock layer to the upper low-temperature rock layer. The reserves are huge and renewable. The current hydrothermal type of geothermal heat directly extracts high-temperature hot water through submersible pumps, and through surface heat exchange, low-temperature tail water is reinjected into the formation. The entire system uses fixed production for irrigation and recharges in the same layer, taking heat but not water. Economic effects and The environmental protection effect is extremely high. [...

AI Technical Summary

Problems solved by technology

[0004] However, for the desanding problem that occurs in the later stage of the completed well, it can only be roughly treated by the cyclone desander, and then the filter bag and filter element are replaced frequently to achieve the effect. These are not only costly, but also laborious. During the replacement process, the system It must be shut down, which not only affects the effect and quality of heating, but also has a bad impact on cables, water pumps and formations due to frequent start and stop. Therefore, a new type of composite filter that is blocked by silt and below particles is proposed to solve the above problems question

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