KR102489161B1 - Water pump for preventing of foreign material jam - Google Patents

Abstract

The present invention relates to a submersible pump for preventing entrapment of foreign substances, and the submersible pump for preventing entrapment of foreign substances according to an embodiment of the present invention is connected to a drive motor and a drive shaft of the drive motor, and sucks fluid into the lower center and discharges it laterally. A protective cap formed to face the impeller and the inner wall of the impeller and the housing to guide the impeller so that the fluid does not interfere with the impeller and the housing when moving. .

Description

Submersible pump to prevent entrapment of foreign substances {WATER PUMP FOR PREVENTING OF FOREIGN MATERIAL JAM}

The present invention relates to a submersible pump for preventing foreign matter from being caught, and more particularly, to a technique for preventing foreign matter from being caught in a flow path.

In general, a pump is a device for moving fluid by inhaling and discharging fluid. An impeller provided in a submersible pump for treating wastewater has one wing open and rotates by the axis of the pump to move the fluid by centrifugal force. inhale and exhale. However, in the case of the Irheon submersible pump, foreign substances contained in the fluid are caught in the inlet side, resulting in malfunction or poor pump efficiency.

Among the prior art, Korean Patent Registration No. 10-1892052 (registered on August 21, 2018) relates to a pump equipped with a foreign matter jam prevention device, in order to prevent foreign matter from being caught in the impeller, on the inner circumference of the suction hole. Disclosed is a technology for preventing the efficiency of a pump from being lowered due to foreign substances by including a foreign substance straddling portion protruding toward the center of the suction hole and blocking the inflow of foreign substances in a direction in which one of two or more vanes is located.

However, the prior art has a limitation in that it cannot prevent foreign substances from being caught by the gap between the impeller and the housing or the efficiency of the pump being lowered due to the water gap.

The technical problem to be solved by the present invention is to provide a submersible pump for preventing foreign substances from being caught in the water pump, which can minimize the failure of the submersible pump and increase efficiency by preventing foreign substances from being caught due to the gap between the impeller and the housing.

In addition, the washer is coupled to the lower part of the impeller to provide a submersible pump for preventing foreign matter entrapment capable of preventing corrosion or entrapment of foreign matter.

A submersible pump for preventing foreign matter from being caught according to an embodiment of the present invention includes a drive motor, an impeller connected to a drive shaft of the drive motor, and formed with a flow path to suck fluid into the lower center and discharge it in a lateral direction, and an inner side of the impeller. It includes a housing for accommodating, and a protective cap formed to face the inner wall of the impeller and the housing and guiding the fluid not to interfere with the impeller and the housing when moving.

In addition, the protective cap is formed in a cylindrical shape with both sides open, and includes a guide portion positioned opposite to the inner wall of the impeller and the housing, and a support portion penetrating the center and supporting the guide portion and coupled to the housing. can do.

In addition, the guide part may be formed such that an inner side of the inlet is curved and an upper side of the outlet is tapered.

In addition, a bolt groove is formed on the outside of the support part to be bolted and fixed to the housing, and a support groove in which the guide part is seated is formed in the center so that the guide part is closely attached and fixed when coupled with the housing.

In addition, it is formed in a ring shape and may further include a washer inserted into the outer circumferential surface of the lower side of the impeller.

Accordingly, it is possible to minimize the failure of the submersible pump and increase the efficiency by preventing foreign substances from being caught due to the gap between the impeller and the housing.

In addition, a washer is coupled to the lower part of the impeller to prevent corrosion or entrapment of foreign substances.

1 is a block diagram of a submersible pump for preventing entrapment of foreign substances according to an embodiment of the present invention.
2 and 3 are exemplary views for explaining states before and after mounting of the protective cap on the submersible pump for preventing foreign matter from being caught according to FIG. 1 .
4 is a block diagram of a protective cap of the submersible pump for preventing foreign substances from being caught according to FIG. 1 .
5 is a detailed configuration diagram of a guide unit of the protective cap according to FIG. 4;
6 is a detailed configuration diagram of a support part of the protection cap according to FIG. 4 .
7 and 8 are exemplary views for explaining that a washer is added to the submersible pump for preventing entrapment of foreign substances according to FIG. 1 .

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. The terms used are terms selected in consideration of functions in the embodiment, and the meaning of the terms may vary depending on the intention of a user or operator or a precedent. Therefore, the meaning of terms used in the embodiments to be described later, when specifically defined in the present specification, follows the definition, and when there is no specific definition, it should be interpreted as a meaning generally recognized by those skilled in the art.

1 is a block diagram of a submersible pump for preventing entrapment of foreign substances according to an embodiment of the present invention, and FIGS. 2 and 3 are exemplary diagrams for explaining states before and after the installation of a protective cap on the submersible pump for preventing entrapment of foreign substances according to FIG. 1. 4 is a configuration diagram of a protective cap of a submersible pump for preventing foreign substances from being caught according to FIG. 1, FIG. 5 is a detailed configuration diagram of a guide part of a protective cap according to FIG. 4, and FIG. This is a detailed configuration diagram.

Referring to FIGS. 1 to 6 , the submersible pump 100 for preventing entrapment of foreign substances according to an embodiment of the present invention includes a drive motor 110, an impeller 120, a housing 130 and a protective cap 140.

The drive motor 110 is located at the top of the submersible pump 100 and rotates the impeller 120 at the bottom. The drive motor 110 has a drive shaft connected to the impeller 120 . The driving motor 110 may generate rotational force in the forward and reverse directions. The rotational torque of the driving motor 110 may be varied by a user's design. The driving motor 110 is coupled to the housing 130 . More specifically, it is coupled by the upper case 131 of the housing 130, and is accommodated in the housing 130 by being bolted to the upper side by a cover. The size and performance of the driving motor 110 may vary according to a user's design.

The impeller 120 is formed with a flow path to suck fluid into the lower center and discharge it in a lateral direction. The impeller 120 is connected to the driving shaft of the driving motor 110 and rotates. The impeller 120 is accommodated inside the housing 130 and serves to discharge fluid from one side of the housing 130 to the other side at high pressure. For example, the impeller 120 allows the fluid to flow into the lower side and discharge the fluid to the side. In this case, a flow path through which fluid can move is formed at the bottom and side of the housing 130 . A protective cap 140 to be described below is inserted into the lower side of the impeller 120 to prevent foreign substances from being caught between the impeller 120 and the housing 130 .

The housing 130 serves to support the impeller 120 . The housing 130 is a kind of case, and the drive motor 110 is accommodated on the upper side and the impeller 120 is accommodated on the lower side. The housing 130 can be divided into an upper case 131 and a lower case 132 . In this case, the upper case 131 and the lower case 132 may be connected by bolt coupling. In the upper case 131, the drive motor 110 is accommodated and fixed. Inside the lower case 132, the housing 130 connected to the drive motor 110 is accommodated. In addition, a flow path through which the fluid discharged through the impeller 120 moves is formed in the lower case 132 .

The protective cap 140 is formed to face the inner walls of the impeller 120 and the housing 130 to guide the movement of the fluid. In other words, the protective cap 140 guides the fluid so that it does not interfere with the impeller 120 and the housing 130 during movement, thereby preventing foreign substances from being caught. The protective cap 140 is coupled to the lower part of the housing 130 and when the fluid is sucked into the impeller 120, foreign substances may be caught or trapped by the space between the lower part of the housing 130 and the inner wall of the protective cap 140. discrepancies can be avoided. The protective cap 140 allows fluid to flow directly into the impeller 120 .

More specifically, the protective cap 140 includes a guide portion 141 and a support portion 142 . The guide part 141 is formed in the shape of a cylinder with both sides open. The guide part 141 is formed in a cylindrical shape with both sides open. The guide part 141 blocks the fluid from moving through the inner wall of the impeller 120 or the housing 130 to prevent foreign substances from being caught. The guide part 141 is positioned to face the inner wall of the impeller 120 and the housing 130 . In this case, the guide part 141 is spaced apart from one side of the lower part of the impeller 120 at a predetermined interval to prevent interference during rotation of the impeller 120 .

In addition, a bent portion 141-1 may be formed such that the lower side of the guide portion 141 is bent outward. This is to ensure that the bent portion 141-1 is positioned and fixed between the support portion 142 and the housing 130, which will be described later. For example, the cross section of the guide part 141 may be formed as '┛┗'. In this case, the inlet 141-2 side of the guide part 141 is formed in a curved shape to facilitate the inflow of fluid. An upper side of the outlet 141-3 of the guide unit 141 may be formed to be tapered. In this case, the outlet 141-3 side of the guide part 141 is located in the inner lower space of the impeller 120. This is to minimize entrapment of foreign substances by allowing the fluid to be introduced through the inlet 141-2 and discharged to the inside of the impeller 120.

The support part 142 is formed in a plate shape through which the center is penetrated. A bolt groove 142-1 is formed in the support part 142 and is fixed to the housing 130 by bolting. In this case, the support part 142 is coupled to the lower side of the housing 130 . The support part 142 serves to support and fix the guide part 141 . In this case, the support groove 142-2 is formed in the center of the support part 142. The support groove 142-2 means a groove in which the guide unit 141 can be seated. The support part 142 is bolted and fixed to the lower part of the housing 130 in a state where the guide part 141 is seated in the support groove 142-2 on the inside. In this case, the guide part 141 is positioned and fixed between the housing 130 and the support part 142 while being bolted and fixed. Accordingly, the guide unit 141 can be stably fixed.

7 and 8 are exemplary views for explaining that a washer is added to the submersible pump for preventing entrapment of foreign substances according to FIG. 1 .

1 to 8 , the submersible pump 100 for preventing entrapment of foreign substances according to an embodiment of the present invention may further include a washer 150.

The washer 150 is formed in a ring shape and is inserted into the outer circumferential surface of the lower side of the impeller 120 . For example, the washer 150 is preferably formed of a material resistant to corrosion, such as stainless steel. The washer 150 is mounted on the lower part of the impeller 120 to minimize interference with the rotation of the impeller 120 while being caught by foreign substances during fluid movement. In this case, the washer 150 may be designed to be variable according to the size of the impeller 120 . The center of the washer 150 may be penetrated to allow fluid to flow into the impeller 120 . Accordingly, corrosion of the bottom of the impeller 120 can be delayed as much as possible.

In addition, a cutting surface (not shown) may be formed on the outer surface of the washer 150 . For example, the cutting surface is formed in an intaglio or embossed shape and serves to crush and remove foreign substances. In this case, the cutting surface may be formed in a lattice shape or sawtooth shape. In this case, even when a foreign substance such as sludge is caught in the gap between the impeller 120 and the housing 130, the cutting surface of the washer 150 crushes it while the impeller 120 rotates, so that the foreign substance can be removed. Accordingly, as the impeller 120 itself can crush foreign substances, it is possible to easily remove minor foreign substances from being caught.

In the above, the present invention has been described with reference to the preferred embodiments described with reference to the drawings, but is not limited thereto. Therefore, the present invention should be interpreted by the description of the claims intended to cover obvious modifications that can be derived from the described examples.

100: submersible pump
110: drive motor
120: impeller
130: housing
131: upper case
132: lower case
140: protective cap
141: guide unit
141-1: bending part
141-2: inlet
141-3: outlet
142: support
142-1: bolt groove
142-2: support groove
150: washer

Claims (5)

drive motor 110;
an impeller 120 connected to the drive shaft of the drive motor 110 and formed with a flow path to suck fluid into the lower center and discharge it in a lateral direction;
A housing 130 accommodating the impeller 120 therein; and
A protective cap 140 formed to face the inner walls of the impeller 120 and the housing 130 to guide the fluid so that it does not interfere with the impeller 120 and the housing 130 when moving,
The protective cap 140,
It is formed in a cylindrical shape with both sides open, and the guide part 141 located opposite the inner wall of the impeller 120 and the housing 130 penetrates the center and supports the guide part 141 to It is coupled to the housing 130, and a bolt groove 142-1 is formed on the outside to be bolted and fixed to the housing 130, and a support groove 142-2 in which the guide part 141 is seated in the center A submersible pump 100 for preventing foreign matter from being caught, including a support part 142 for allowing the guide part 141 to come into close contact with and be fixed when it is formed and coupled to the housing 130. delete According to claim 1,
The guide part 141,
A submersible pump 100 for preventing foreign substances from being caught in which the inside of the inlet 141-2 is curved and the upper side of the outlet 141-3 is tapered. delete According to claim 1 or 3,
Formed in a ring shape and further comprising a washer 150 inserted into the outer circumferential surface of the lower side of the impeller 120, the submersible pump 100 for preventing foreign matter from getting stuck.

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