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CN-224214456-U - Sand and stone filtering structure of centrifugal pump

CN224214456UCN 224214456 UCN224214456 UCN 224214456UCN-224214456-U

Abstract

The application provides a sand filtering structure of a centrifugal pump, which relates to the technical field of centrifugal pumps and comprises a filtering assembly, a collecting frame and a centrifugal pump body, wherein a movable notch is formed in the bottom of a water inlet, a release frame is connected to the outside of the water inlet in a sleeved mode, a ring groove is formed in the inner wall of the release frame, a drain hole is formed in the outer wall of the release frame, the inside of the drain hole is communicated with the inside of the ring groove, the filtering assembly comprises a guide filter screen, the guide filter screen is in a truncated cone shape, the collecting filter frame is integrally formed at a narrow end of the guide filter screen, the release frame comprises a second retaining ring, the top of the second retaining ring is connected with a first retaining ring in an assembling mode, and the technical key is that when the collecting frame is blocked by the ring groove in the inner wall of the release frame, the release frame can be controlled to rotate outside the water inlet, so that the bottom of the release frame is supported to withdraw from the inside of the drain hole, and sand concentrated in the collecting frame is convenient to clean and discharge.

Inventors

  • SONG YANGYANG
  • YANG WENBAO
  • ZHENG JIAN

Assignees

  • 乾丰泵业有限公司

Dates

Publication Date
20260508
Application Date
20250623

Claims (7)

  1. 1. A sand filtering structure of a centrifugal pump, comprising: a filter assembly (4); A collection frame (7) provided inside one end of the filter element (4); a centrifugal pump body (1); A water inlet (3) is integrally formed on one side of the centrifugal pump body (1), a water outlet (2) is tangentially formed at the edge of the centrifugal pump body (1), a movable notch (8) is formed at the bottom of the water inlet (3), a release frame (5) is connected to the outside of the water inlet (3) in a sleeved mode, a ring groove (9) is formed in the inner wall of the release frame (5), and a drain hole (6) is formed in the outer wall of the release frame (5); The filter assembly (4) comprises a guide filter screen (401), wherein the guide filter screen (401) is in a round table shape, and a collecting filter frame (403) is integrally formed at the narrow end of the guide filter screen; The inside of the drain hole (6) is communicated with the inside of the annular groove (9), the collecting frame (7) is connected with the inside of the collecting filter frame (403) in a sliding mode, one end of the collecting frame (7) extends out of the inside of the movable notch (8) and is connected with the inner wall of the annular groove (9) in an adapting mode, the releasing frame (5) rotates outside the water inlet (3) to enable the drain hole (6) to be switched from the top to the bottom, and the collecting frame (7) is movably connected with the inside of the drain hole (6).
  2. 2. The sand filtering structure of a centrifugal pump according to claim 1, wherein a retainer ring (402) is integrally formed at the wide end of the guide filter screen (401), the retainer ring (402) is accommodated in the inner part of one end of the water inlet (3) far away from the centrifugal pump body (1), and the surface of one side of the retainer ring (402) far away from the guide filter screen (401) is flush with the end face of the water inlet (3).
  3. 3. The sand filtering structure of a centrifugal pump according to claim 1, wherein a supporting rib (404) is integrally formed at one end of the collecting filter frame (403) far away from the guide filter screen (401), the supporting rib (404) is arc-shaped, and the outer side is attached to the inner wall of the water inlet (3).
  4. 4. A sand filtering structure of a centrifugal pump according to claim 1, wherein the collecting frame (7) and the collecting filter frame (403) are formed into a filter screen on a side far away from the narrow opening end of the guide filter screen (401), and the meshes of the filter screen on the collecting frame (7) are larger than those on the guide filter screen (401), and the meshes of the filter screen on the guide filter screen (401) are the same as those on the guide filter screen (401).
  5. 5. A sand filter structure of a centrifugal pump according to claim 1, characterized in that water flows through the inside of said guide screen (401), passes out from the inside of the guide screen (401) and the collecting screen frame (403), leaves sand inside the guide screen (401) and the collecting screen frame (403), and concentrates inside the collecting frame (7) with the continuously flowing water.
  6. 6. A sand filtering structure of a centrifugal pump according to claim 1, characterized in that the release frame (5) comprises a second retaining ring (502), the top of the second retaining ring (502) being connected with a first retaining ring (501) in a fitting manner; wherein the first retaining ring (501) and the second retaining ring (502) form a circular ring, and the drain opening (6) is positioned at the center of the first retaining ring (501).
  7. 7. The sand filtering structure of a centrifugal pump according to claim 6, wherein ribs (503) are arranged on the outer sides of two ends of the second retaining ring (502), the inner side surfaces of the ribs (503) are attached to the outer side surfaces of the first retaining ring (501), and the first retaining ring (501) moves along the axis direction of the water inlet (3) and is installed between the two ribs (503).

Description

Sand and stone filtering structure of centrifugal pump Technical Field The utility model relates to the technical field of centrifugal pumps, in particular to a sand filtering structure of a centrifugal pump. Background Centrifugal pumps operate by using rotation of an impeller to cause centrifugal movement of water. Before the water pump is started, the pump shell and the water suction pipe are filled with water, then the motor is started, the pump shaft drives the impeller and the water to do high-speed rotation movement, the water is centrifugally moved and thrown to the outer edge of the impeller, and the water flows into the water pressing pipeline of the water pump through the runner of the volute pump shell. The basic structure of the centrifugal pump is eight parts, namely an impeller, a pump body, a pump cover, a water stop ring, a pump shaft, a bearing, a sealing ring, a stuffing box and an axial force balancing device. Centrifugal pumps are widely used in the transportation of slurries containing solid particles in the industries of electricity, metallurgy, coal, construction materials, and the like. The utility model provides a filtration of centrifugal pump is inhaled to end of patent document of bulletin number CN220365781U is through connecting external pipeline on drain pipe and first feed liquor pipe, then carry out the shutoff to the second feed liquor pipe through the shutoff subassembly, during the use, the motor drives the impeller and rotates, impeller pivoted in-process, water gets into from first feed liquor pipe, then flow from the drain pipe under the effect of impeller, water filters water when passing through first feed liquor pipe, thereby reduce the grit that mixes in the water, when water passes through the impeller, reduce the harm that the grit caused the impeller, and then promote centrifugal pump's work efficiency. However, in the process of implementing the above technical solution, the following technical problems are found in the above technical solution: This end is inhaled centrifugal pump's filtration is through filtering the grit in inlet department, can reduce the grit of rivers through impeller department, but in actual application, and the inside grit of filtration increases along with the time lapse, when needs clearance, is difficult for taking out filtration from centrifugal pump's inside to clear up, influences follow-up centrifugal pump during operation easily, rivers flow through the velocity of flow in the filtration. Disclosure of utility model In order to overcome the defect that when the filtering structure of the existing end suction centrifugal pump is actually applied, sand and stone in the filtering structure are increased along with the time, the filtering structure is not easy to be taken out from the inside of the centrifugal pump to clean when the filtering structure needs to be cleaned, and the flow speed of water flowing through the filtering structure is easy to influence when the follow-up centrifugal pump works, the application ensures that the collecting frame passes through the movable notch on the water inlet to be positioned in the collecting frame by arranging the filtering component consisting of the collecting filter frame and the guiding filter frame on the inner side of the water inlet, and the bottom of the collecting frame is plugged by virtue of the releasing frame, so that water can flow through the inner side of the guiding filter frame, and the sand and stone are convenient to stay at the inner sides of the guiding filter frame and the inner side of the collecting frame to be concentrated in the collecting frame; Simultaneously, when collecting the frame through the annular shutoff with the help of release frame inner wall department, can be in the outside pivoted form of water inlet with the control release frame, make the escape orifice rotate to the bottom from the top to the bottom that the frame was collected in the support is followed the inside of escape orifice and is withdrawed from, is convenient for clear up, discharge and collect the inside grit that concentrates of frame. The technical scheme adopted by the embodiment of the application for solving the technical problems is as follows: The sand filtering structure of the centrifugal pump comprises a filtering component, a collecting frame and a centrifugal pump body, wherein the collecting frame is arranged in one end of the filtering component; a water inlet is integrally formed on one side of the centrifugal pump body, a water outlet is tangentially formed at the edge of the centrifugal pump body, a movable notch is formed at the bottom of the water inlet, a release frame is connected to the outside of the water inlet in a sleeved mode, a ring groove is formed at the inner wall of the release frame, and a drain hole is formed at the outer wall of the release frame; The filter assembly comprises a guide filter screen which is in a truncated cone shape, and a col