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KR-102963227-B1 - SPURT PUMP WITH CUTTING FUNCTION

KR102963227B1KR 102963227 B1KR102963227 B1KR 102963227B1KR-102963227-B1

Abstract

The present invention relates to a sprue pump having a cutting function, and more particularly to a sprue pump having a cutting function capable of cutting foreign substances entering the pump to prevent the pump from failing due to foreign substances. The sprut pump having a cutting function according to the present invention comprises: a cutting plate having a plurality of cutting holes formed through it, into which foreign matter is introduced and which is mounted in the suction port of a pump casing; and a cutter, the lower surface of which contacts the upper surface of the cutting plate and is connected to the drive shaft of a drive motor to rotate together with an impeller and cut foreign matter introduced into the cutting holes by rotation; wherein the cutter comprises: an upper member coupled to the drive shaft and rotating together with it; and a lower member coupled to the upper member so as to be movable in the vertical direction, which rotates together with the upper member and whose lower surface contacts the upper surface of the cutting plate to cut foreign matter introduced into the cutting holes; wherein the lower member is characterized by being able to descend independently of the upper member as the lower surface contacting the upper surface of the cutting plate wears down.

Inventors

  • 김시택

Assignees

  • (주)삼진브앤피

Dates

Publication Date
20260511
Application Date
20240617

Claims (8)

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  3. The device comprises: an impeller for sucking in and discharging fluid; a drive motor for rotating the impeller; a pump casing in which the impeller is housed to form a fluid path, and which has an inlet for fluid inflow and an outlet for discharging the sucked fluid; a cutting plate mounted on the inlet, through which a plurality of cutting holes are formed for foreign matter to enter; and a cutter, the lower surface of which contacts the upper surface of the cutting plate, which is connected to the drive shaft of the drive motor to rotate together with the impeller, and which cuts foreign matter entering through the cutting holes by rotation. The cutter mentioned above is, It includes an upper member coupled to the drive shaft and rotating together with it; and a lower member coupled to the upper member so as to be movable in the vertical direction, rotating together with the upper member, and having its lower surface in contact with the upper surface of the cutting plate to cut foreign matter entering the cutting hole. The lower member is lowered independently of the upper member as the lower surface in contact with the upper surface of the cutting plate wears down. The above upper member is formed in a cylindrical shape, and A cylindrical first mounting groove into which the upper member is inserted is formed in the lower member, and A locking projection is formed protruding from the outer surface of the upper member, and A locking groove into which the locking projection is inserted is formed on the inner surface of the first mounting groove, The above-mentioned catch groove is formed by repeatedly connecting vertical grooves and horizontal grooves to create a stepped groove, and A sprue pump having a cutting function, characterized in that the above-mentioned catch groove is formed to gradually rise from the bottom to the top along the rotational direction of the cutter.
  4. The device comprises: an impeller for sucking in and discharging fluid; a drive motor for rotating the impeller; a pump casing in which the impeller is housed to form a fluid path, and which has an inlet for fluid inflow and an outlet for discharging the sucked fluid; a cutting plate mounted on the inlet, through which a plurality of cutting holes are formed for foreign matter to enter; and a cutter, the lower surface of which contacts the upper surface of the cutting plate, which is connected to the drive shaft of the drive motor to rotate together with the impeller, and which cuts foreign matter entering through the cutting holes by rotation. The cutter mentioned above is, It includes an upper member coupled to the drive shaft and rotating together with it; and a lower member coupled to the upper member so as to be movable in the vertical direction, rotating together with the upper member, and having its lower surface in contact with the upper surface of the cutting plate to cut foreign matter entering the cutting hole. The lower member is lowered independently of the upper member as the lower surface in contact with the upper surface of the cutting plate wears down. A second mounting groove into which the upper member is inserted is formed in the lower member, and The cutter further comprises a rotation locking part that causes the lower member to move independently relative to the upper member when the cutter stops rotating, and prevents the lower member from moving independently relative to the upper member while causing the lower member and the upper member to rotate together when the cutter rotates. A sprue pump having a cutting function, characterized in that the above-mentioned rotary locking part is actuated by centrifugal force when the upper member rotates to prevent the lower member from rising and falling independently relative to the upper member.
  5. In claim 4, The above-mentioned rotary locking part is, A first seating groove formed laterally open in the upper member; A slider movably inserted in the first mounting groove; It comprises a second seating groove formed open in a lateral direction in which the direction of the second mounting groove is arranged in the lower member above, wherein The second seating groove is formed to be elongated in the vertical direction, and When the rotation of the upper member stops, the slider is inserted only into the first seating groove, and A sprue pump having a cutting function, characterized in that when the upper member rotates, the slider inserted into the first seating groove moves by centrifugal force, so that a part is inserted into the first seating groove and the remaining part is fitted in contact with the inner surface of the second seating groove, thereby causing the lower member and the upper member to rotate together while simultaneously preventing the lower member from moving up and down independently relative to the upper member.
  6. In claim 5, A sprue pump having a cutting function, characterized in that the above slider is formed in the shape of a ball or a rod.
  7. In claim 5, A first uneven surface is formed in the vertical direction on one surface of the slider facing the second seating groove, and On the inner wall of the second seating groove, a second uneven portion corresponding to the first uneven portion is formed in the vertical direction, and A sprue pump having a cutting function, characterized in that when the upper member rotates, the slider inserted into the first seating groove moves by centrifugal force so that the first protrusions and the second protrusions and the first protrusions and the second protrusions and the first protrusions and the second protrusions and the first protrusions and the second protrusions and the second protrusions and the first protrusions and the second protrusions and the lower member are prevented from moving independently with respect to the upper member.
  8. In claim 6 or claim 7, A sprue pump having a cutting function, characterized in that the first seating groove is formed with a downward slope, and the slider is automatically inserted into the first seating groove by its own weight when the cutter is in a stopped rotation state.

Description

Sprut pump with cutting function { SPURT PUMP WITH CUTTING FUNCTION } The present invention relates to a sprue pump having a cutting function, and more particularly to a sprue pump having a cutting function capable of cutting foreign substances entering the pump to prevent the pump from failing due to foreign substances. A sprut pump is a submersible centrifugal pump with a single spiral vane formed on the impeller centered on the suction port. It is a submersible pump that is mainly installed underwater in places with a large amount of foreign matter, such as sewage, wastewater, solids, and sludge, and is designed to transport foreign matter without it getting caught on the impeller. However, even with a specialized sprue pump designed to effectively discharge foreign substances by forming only a single vane as described above, there was a problem where thin and long foreign substances, such as vinyl that were not filtered out during the pretreatment process, would wrap around the entire vane and easily get tangled in the impeller. Once foreign matter gets caught on the impeller, the pump's suction port becomes even more clogged by the subsequent foreign matter. This not only makes fluid transfer impossible but also causes frequent pump failures due to overload, and inevitably leads to cleaning or repairs such as clearing the blockage. To solve these problems, many submersible pumps equipped with a cutting function for cutting foreign substances have been developed in the past. When a cutter used to cut foreign materials is used for a long time, wear occurs, causing the cutting function to deteriorate. Therefore, conventionally, there was inconvenience because a new cutter had to be frequently installed when the cutter wore out. FIG. 1 is a cross-sectional structural diagram of a sprue pump having a cutting function according to a first embodiment of the present invention, FIG. 2 is an exploded perspective view of a cutting plate and a cutter according to a first embodiment of the present invention. FIG. 3 is an exploded perspective view of a cutter according to a second embodiment of the present invention, FIG. 4 is an operation diagram illustrating the process of a cutter descending in a sprue pump having a cutting function according to a second embodiment of the present invention. FIG. 5 is an exploded perspective view of a cutter according to a third embodiment of the present invention, FIG. 6 is an operation diagram illustrating the process of a cutter descending in a sprue pump having a cutting function according to a third embodiment of the present invention, FIG. 7 is an operation diagram illustrating the process of a cutter descending in a sprue pump having a cutting function according to the fourth embodiment of the present invention, First embodiment FIG. 1 is a cross-sectional view of a sprue pump having a cutting function according to a first embodiment of the present invention, and FIG. 2 is an exploded view of a cutting plate and a cutter according to a first embodiment of the present invention. The spring pump having a cutting function according to the present invention comprises, as shown in FIG. 1, an impeller (10), a driving motor (20), a pump casing (30), a cutting plate (40), a cutter (50), etc. The above impeller (10) is mounted inside the pump casing (30) and, by rotation, sucks fluid into the inside of the pump casing (30) and discharges it to the outside. The above drive motor (20) is mounted on the pump casing (30) and rotates the impeller (10). The above pump casing (30) accommodates the impeller (10) inside and forms a fluid passage through which fluid moves, and has an intake port (31) through which fluid flows in and an outlet port (32) through which the sucked fluid is discharged to the outside. Since the above-mentioned impeller (10), drive motor (20), and pump casing (30) are identical or similar to the configuration and structure of a general submersible pump or a spray pump, a detailed description thereof is omitted. The cutting plate (40) is fixedly mounted to the suction port (31) of the pump casing (30), and has a plurality of cutting holes (41) formed through it to allow foreign matter to enter from the outside. Accordingly, the suction port (31) and the impeller (10) formed inside the pump casing (30) are connected to each other through the cutting hole (41). The lower surface of the cutter (50) contacts the upper surface of the cutting plate (40) and is connected to the drive shaft (21) of the drive motor (20) to rotate together with the impeller (10). The cutter (50) cuts foreign matter entering the cutting hole (41) of the cutting plate (40) by rotation. That is, when foreign matter flows into the cutting hole (41), the cutter (50) rotates while its lower surface contacts the upper surface of the cutting plate (40), thereby cutting the foreign matter in the cutting hole (41). To do this, the lower surface of the cutter (50) must be sharpened. The cutter (50) may b