KR102152427B1 - Centrifugal self-priming pump with grinder function - Google Patents

Abstract

The present invention relates to a centrifugal self-priming pump having a grinder function, capable of pulverizing and discharging foreign substances. The centrifugal self-priming pump having the grinder function according to an embodiment of the present invention includes: a drive motor part in which a drive shaft rotates; an impeller that is coupled to the drive shaft, sucks fluid while rotating, and discharges the sucked fluid; a grinder blade installed in front of the impeller where fluid is sucked and rotates with the impeller to crush the sucked foreign substances; a pump casing in which the impeller is accommodated inside and has a suction port through which fluid is sucked and a discharge port to discharge the sucked fluid; an incision part formed by cutting a part between the suction port and the impeller in the pump casing so that the inside of the pump casing can be opened and cleaned; a casing opening and closing cover that is detachably coupled to the incision part to open and close the incision part, has a suction passage for moving the fluid introduced through the suction port to the impeller, and forms an entry hole in which the grinder is located on the inner periphery and the fluid enters the impeller together with foreign substances crushed by the grinder; and a grinder ring that is installed in the entry hole and cooperates with the rotation of the grinder to crush foreign substances.

Description

Centrifugal self-priming pump with grinder function}

The present invention relates to a centrifugal self-priming pump having a grinder function capable of pulverizing and discharging foreign substances.

In general, a self-priming pump is a pump capable of re-suction by generating a vacuum inside the pump casing even if there is no water in the suction pipe.Since it is possible to pump fluid even if bubbles, air or foreign substances are mixed in the suction pipe, the waste water tank, manhole , Civil engineering, agricultural irrigation, etc.

Since such a self-priming pump sucks a fluid in a state in which foreign matters are mixed, clogging by foreign matters occurs, and the efficiency of the pump decreases as foreign matters accumulate.

In order to solve this problem, the "solid self-priming pump" of Korean Patent Publication No. 10-0950454 (announced on April 4, 2010) has been disclosed.

The above-described conventional solid self-priming pump is a suction port for sucking fluid including sludge, a suction pipe connected to the suction port and separated by a partition wall, formed as a space at the end of the suction pipe, and formed by a part of the pump casing through the hole. A hollow part, an impeller for discharging sludge and fluid introduced through the suction port and the suction pipe at one end of the hollow part to a passage different from the suction port and the suction pipe, and discharge through which the sludge and fluid discharged by the impeller are transferred It was configured to include a pipe, a discharge port for discharging sludge and fluid transferred through the discharge pipe to the outside, and a sludge removal cover that covers all of the through holes from the outside of the pump casing and is in close contact with the pump casing.

Such a conventional solid self-priming pump was able to easily remove foreign substances by opening the inside of the pump casing by the sludge removal cover.

However, the conventional solid self-priming pump can only clean foreign substances by the sludge removal cover, and the foreign substances contained in the fluid are wound around the impeller because the foreign substances cannot be treated, thereby reducing the efficiency of the pump or clogging the suction port or the discharge port, causing a load on the impeller. As it increases, there is a problem in that damage such as a motor burns out.

In addition, there is a problem that it is not easy to remove the sludge removal cover, such as having to fasten and loosen a plurality of bolts in order to remove the sludge removal cover, and there is a problem that leakage occurs when it is not combined in the correct position. When not in use, there is a cumbersome problem to replenish the pick-up.

In addition, there is a problem in that it is difficult to grasp the bonding state of the sludge removal cover from the outside.

The present invention was conceived to solve the above problems, and the problem to be solved by the present invention is to dispose of foreign substances by pulverizing and discharging foreign substances contained in the suction fluid by installing a grinder blade and a grinder in front of the impeller. Thus, it is an object of the present invention to provide a centrifugal self-priming pump having a grinder function capable of preventing clogging by foreign substances or a decrease in the efficiency of the pump.

In addition, the inlet pipe through which the wastewater flows in and the pump casing are connected to the pump casing, so that the pumping water can be supplied at all times even if the pumping water is not separately charged, and the fluid in the pump casing is piped through the pumping water even if the discharge port is blocked by foreign substances. It is an object of the present invention to provide a centrifugal self-priming pump having a grinder function capable of reducing the occurrence of burnout of a drive motor unit due to the occurrence of a load by circulating through the flow.

In addition, the combined state of the casing opening/closing cover can be easily identified from the outside through the coupling confirmation part, and a guide groove and a guide protrusion are formed between the casing opening/closing cover and the cut part, so that the casing opening/closing cover is coupled to the correct position for leakage. It is an object of the present invention to provide a centrifugal self-priming pump having a grinder function capable of preventing damage to a grinder blade and grinding.

In addition, the purpose of providing a centrifugal self-priming pump capable of easily grasping the state of foreign substances accumulated in the pump casing by a foreign substance detection sensor, as well as easily detaching the casing opening and closing cover by a cover detachable operation unit To do.

Centrifugal self-priming pump having a grinder function according to an embodiment of the present invention for achieving the above object is a drive motor unit in which a drive shaft rotates, and an impeller that sucks fluid and discharges the sucked fluid as it rotates by being coupled to the drive shaft. , A grinder blade installed in front of the impeller in which fluid is sucked and rotates with the impeller to crush the sucked foreign matter, the grinder blade and the impeller are accommodated therein, and the suction port through which the fluid is sucked by the impeller and sucked A pump casing with a discharge port for discharging fluid, a cutout formed by cutting a portion between the suction port and the impeller in the pump casing so that the inside of the pump casing can be opened and cleaned, detachably coupled to the cutout The incision is opened and closed, and a suction passage for moving the fluid introduced through the suction port to the impeller is formed, and the grinder is located in the inner periphery, and an entry hole through which the fluid enters the impeller together with the foreign matter crushed by the grinder It includes a casing opening and closing cover to be formed, and a grinder that is installed in the entry hole and cooperates with the rotation of the grinder to crush foreign matter.

The grindering includes a plurality of crushed grooves formed in an inner circumference so that a foreign substance is caught and pulverized as the grinder blade rotates, and a fluid passes along with the crushed foreign substance, and the crushing groove includes a foreign substance caught in the crushing groove. The area may be formed in a shape that increases in width from the front to the rear through which the fluid is introduced so that it is easily discharged in the direction in which is located.

When the casing opening/closing cover is coupled to the incision part, the guide protrusion formed in one of the casing opening/closing cover and the incision part, and the other is formed at the correct position to prevent damage by colliding with the grinder blade. The guide protrusion may include a guide groove fitted and guided.

The pump casing and the inlet pipe supplied to the inside of the wastewater tank may be connected to each other, and may include a pick-up pipe for supplying the pick-up water to the inside of the pump casing.

The grinder blade has a shaft coupling part coupled to the drive shaft, a crushing protrusion part protruding from the circumference of the shaft coupling part to the inner circumference of the grinder to crush foreign matter flowing into the inner circumference of the grinding wheel, and the inner circumference of the grinding wheel It may include a cutting portion in which a plurality of cutting grooves are formed so as to cut the foreign material flowing into the flow.

The pump casing may include a coupling confirmation unit for externally confirming a state in which the casing opening/closing cover is coupled to the cutout.

The engagement confirmation portion is a first pin hole formed in the casing opening and closing cover, a second pin hole formed in the pump casing corresponding to the first confirmation hole in a state where the cut portion is fitted to the casing opening and closing cover so as to match, and the first pin In a state in which the ball and the second pin hole are matched, it may include a coupling confirmation pin fitted to connect the first pin ball and the second pin hole.

According to the present invention, the casing opening/closing cover is detachably coupled to the pump casing, so that not only can the impeller, the grinder blade, and the grinding be easily maintained, but also foreign matter accumulated inside can be easily cleaned.

In addition, the casing opening/closing cover is inserted in the correct position by the guide groove and the guide protrusion in the incision, thereby minimizing damage to the grinder blade and grinding when the casing opening/closing cover is coupled, and the occurrence of leakage can be minimized.

In addition, since the inlet pipe and the pump casing into which the wastewater is introduced are connected to each other by the pumping water pipe, a part of the incoming wastewater is provided to the pump casing, so there is no need to replenish the pumping water. By circulating the fluid sucked through the pipe to reduce the load, it is possible to prevent burnout of the drive motor.

In addition, the casing opening/closing cover can be easily detached by the cover detachable operation unit, and the connection state can be easily identified from the outside through the connection confirmation unit to prevent the occurrence of leakage due to inaccurate connection, and grinder blades and grinders It can prevent the ring from being damaged when it comes into contact.

In addition, a foreign matter detection sensor is installed so that it is possible to easily identify a state in which foreign matter accumulates in the pump casing and requires cleaning.

1 is a perspective view showing a centrifugal self-priming pump having a grinder function according to an embodiment of the present invention.
2 is a side cross-sectional view showing a centrifugal self-priming pump having a grinder function according to an embodiment of the present invention.
3 is a perspective view showing a grinder and a grinder blade constituting a centrifugal self-priming pump having a grinder function according to an embodiment of the present invention.
4 is a side cross-sectional view showing a centrifugal self-priming pump having a grinder function according to an embodiment of the present invention, showing a state in which the casing opening/closing cover is separated from the pump casing by an operation lever.
5 is an enlarged side cross-sectional view of a coupling confirmation unit constituting a centrifugal self-priming pump having a grinder function according to an embodiment of the present invention.
6 is a view showing a state in which a centrifugal self-priming pump having a grinder function according to an embodiment of the present invention is installed in a wastewater tank.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

As shown in FIGS. 1 to 3, the centrifugal self-priming pump 100 having a grinder function according to an embodiment of the present invention may include a driving motor unit 110.

The drive motor unit 110 can rotate the drive shaft 111, and the drive motor unit 110 is an electric motor that rotates the drive shaft 111 by electricity, or the drive shaft 111 by fossil fuel. It can be implemented as an engine.

As shown in FIGS. 2 and 3, the centrifugal self-priming pump 100 having a grinder function according to an embodiment of the present invention may include an impeller 140.

As the impeller 140 rotates, a suction force is generated by a vane to suck and discharge fluid, and the impeller 140 may be coupled to the drive shaft 111 and rotated by the drive motor unit 110.

The impeller 140 may be arranged with a plurality of vanes spaced apart from each other along a circumferential direction around the drive shaft 111, and the impeller 140 sucks fluid to the center where the drive shaft 111 is located by centrifugal force. It may be a centrifugal impeller 140 that discharges around the circumference.

In addition, the impeller 140 may be a closed impeller 140 installed inside the sealed pump casing 120 to suck and discharge fluid by centrifugal force.

2 to 4, the centrifugal self-priming pump 100 having a grinder function according to an embodiment of the present invention may include a grinder blade 150.

The grinder blade 150 is formed in the shape of a disk, and is coupled to the drive shaft 111 together with the impeller 140 to crush foreign matter contained in the fluid as it rotates.

On the other hand, the grinder blade 150 may be formed in the shape of a cone whose height decreases toward the circumference from the central portion where the drive shaft 111 is coupled, and the grinder blade 150 is a front surface for sucking fluid from the impeller 140 The impeller 140 may be coupled to the front of the coupled drive shaft 111 so as to crush foreign substances in.

The grinder blade 150 is formed in a shape in which a crushing protrusion 151 having a plurality of rod shapes is erected in parallel with the driving shaft 111 around the grinder blade 150, so that the crushing protrusion 151 and a grinder to be described below Foreign matter flowing between the inner circumference of the ring 160 may be pulverized into a small size.

Meanwhile, the grinder blade 150 may include a cutting part 153.

The cutting part 153 may form a plurality of cutting grooves around the outer periphery of the grinder blade 150 so that the foreign matter is caught in the cutting part 153 according to the rotation of the grinder blade 150 to cut the foreign matter.

The grinder blade 150 may be formed of an alloy having high hardness so as to minimize damage caused by the foreign material when the foreign material is crushed by rotational force.

As shown in FIGS. 1 to 3, the centrifugal self-priming pump 100 having a grinder function according to an embodiment of the present invention may include a pump casing 120.

The pump casing 120 may be accommodated in a closed form of the impeller 140 to convert centrifugal force acting on the fluid of the impeller 140 into pressure.

The pump casing 120 may be formed with a suction port 121 through which the fluid is sucked and a discharge port 123 through which the fluid sucked through the suction port 121 is discharged, and the impeller 140 from the suction port 121 is provided at the pump casing 120. A cutout 125 formed by cutting a portion of the flow path through which the fluid moves to the portion where) is located may be formed.

In this case, the portion of the cutout 125 in which the impeller 140 is located may be formed so that the impeller 140 is completely exposed and visible through the cutout 125.

The pump casing 120 may include a casing opening/closing cover 130.

The casing opening/closing cover 130 may be inserted into the cutout 125 of the pump casing 120 to seal the pump casing 120, or may be separated from the cutout 125 to open the pump casing 120.

The casing opening/closing cover 130 includes a suction passage 131 that connects the portion where the suction port 121 is formed and the portion where the impeller 140 is positioned so that the fluid introduced from the suction port 121 can be provided to the impeller 140. Can be formed.

In addition, an entry hole 133 through which the fluid introduced from the suction port 121 enters the impeller 140 may be formed at an end portion of the suction passage 131 where the impeller 140 is positioned.

The entry hole 133 may be provided with a grinder 160 to be described below.

An airtight seal may be installed at a portion in contact with the casing opening/closing cover 130 and the cutout 125 to prevent leakage of fluid.

In addition, the casing opening/closing cover 130 and the cutout 125 have a guide on any one of the casing opening/closing cover 130 and the cutout 125 so that the casing opening and closing cover 130 is slid and coupled to the cutout 125 The protrusion 127 is formed, and the other guide groove 137 is formed so that the guide protrusion 127 is guided to the guide groove 137 and moves while the casing opening and closing cover 130 is coupled to the cutout 125 or , It may be separated from the cutout 125.

Here, the guide protrusion 127 and the guide groove 137 are formed along the drive shaft 111 so that the casing opening/closing cover 130 moves in the axial direction of the drive shaft 111 to be fitted or separated from the cutout 125. In addition, the guide protrusion 127 and the guide groove 137 may be formed in the lower, upper or side surfaces of the casing opening/closing cover 130 or in two or more portions of the pump casing 120 corresponding thereto.

2 to 4, the centrifugal self-priming pump 100 having a grinder function according to an embodiment of the present invention may include a grinder 160.

The grindering 160 is formed in a ring shape and inserted into the entry hole 133 to be coupled, and a fluid containing foreign matter is impeller in the inner circumference of the grindering 160 to crush the foreign matter by the grinder blade 150 The crushing groove 161 sucked by the 140 may be formed.

The fluid may be sucked into the crushing groove 161 by the suction force of the impeller 140, and when foreign substances contained in the fluid are caught in the crushing groove 161, the crushing protrusion 151 of the grinding blade 150 rotates. The foreign matter is crushed between the crushing protrusion 151 and the grindering 160, or the foreign matter is cut while being caught in the cutting groove of the cutter part formed on the outer periphery of the grinder blade 150, and the fluid and fluid in the direction in which the impeller 140 is located. May be inhaled together.

A plurality of grinding grooves 161 may be formed to be spaced apart from each other in the inner circumference of the grindering 160, and the grinding grooves 161 are suctioned so that foreign substances trapped in the grinding grooves 161 are removed by the pressure of the sucked fluid. In the direction in which the impeller 140 is positioned, the area may be formed in a shape that gradually increases as it goes to the rear.

Here, since the crushing groove 161 is formed in a shape that gradually widens from the front to the rear where the fluid is sucked, when it is covered by the crushing protrusion 151 of the grinder blade 150, it produces an effect like a Venturi tube. Thus, by injecting the fluid in the direction in which the impeller 140 is located, foreign substances trapped in the crushing groove 161 can be easily removed from the crushing groove 161 due to a pressure difference.

The grindering 160 may be formed of an alloy with high hardness, and a thread is formed on the outer periphery of the grindering 160, and a thread is also formed in the inner periphery of the entrance hole 133, so that the grindering 160 is an entry hole ( 133) can be combined in the form of screwing on the inner periphery.

As shown in FIG. 6, the centrifugal self-priming pump 100 having a grinder function according to an embodiment of the present invention may include a crushing water pipe 190.

The pumping water pipe 190 supplies fluid into the pump casing 120 to generate a vacuum according to the driving of the impeller 140 in the absence of fluid in the pump casing 120 so that the fluid can be easily sucked. You can provide a welcome.

The water pipe 190 connects the inlet pipe 210 and the pump casing 120 to supply the waste water to the waste water tank 200 in which the centrifugal self-priming pump 100 having a grinder function is installed, and connects the inlet pipe 210 Through the wastewater tank 200, a part of the wastewater flowing into the wastewater tank 200 may be supplied to the inside of the pump casing 120.

On the other hand, the mating water pipe 190 may be provided with a mating water valve for opening or closing the mating water pipe 190 to supply or shut off the mating water to the pump casing 120.

In addition, when the impeller 140 rotates, the pick-up pipe 190 flows a part of the fluid discharged by the impeller 140 into the wastewater tank 200 through the inlet pipe 210, and enters the discharge port 123. When the combined discharge pipe 250 is blocked, by continuously circulating the fluid in the pump casing 120, it is possible to prevent burnout in the driving motor unit 110 due to heat generated by the generation of a load.

For example, when the impeller 140 continuously rotates by the driving motor unit 110 while the discharge port 123 is blocked by foreign substances, a load is applied to the impeller 140 because the fluid cannot be discharged. Accordingly, while heat is generated in the driving motor unit 110, burnout may occur.

However, the present invention is connected to the pump casing 120 when the impeller 140 is driven, even if the discharge port 123 is blocked by foreign substances because the water pipe 190 is connected to the pump casing 120 and the inlet pipe 210 As it is discharged through the inlet pipe 210 through the pick-up pipe 190, the load applied to the impeller 140 may be reduced to prevent the drive motor 110 from being burned.

2, 3 and 5, the centrifugal self-priming pump 100 having a grinder function according to an embodiment of the present invention may include a coupling confirmation unit 180.

When coupling the casing opening/closing cover 130 to the pump casing 120 through the cutout 125, the coupling confirmation unit 180 is coupled to the correct position of the pump casing 120. You can check.

The coupling confirmation unit 180 is a first pin hole 181 is formed in the casing opening/closing cover 130, and the casing opening/closing cover 130 is accurately inserted in the cutout 125, corresponding to the first pin hole 181 The second pin hole 182 is formed in the portion of the pump casing 120, and it is checked whether the coupling confirmation pin 185 is inserted through the first pin hole 181 and the second pin hole 182, Whether the casing opening/closing cover 130 is inserted in the correct position of the cutout 125 can be confirmed.

For example, when the casing opening/closing cover 130 is positioned at the correct position of the cutout 125 while the coupling confirmation pin 185 is inserted into the second pin hole 182, the first pin hole 181 and the second pin hole ( As 182) is in communication, it is possible to check whether or not the connection confirmation pin 185 is correctly coupled by being inserted into the inside.

Here, if the casing opening/closing cover 130 is not accurately coupled with the cutout 125, not only leakage of fluid occurs, but also when the grinder blade 150 comes into contact with the grinding 160, the grinder blade 150 rotates. As the grinding 160 or the grinding blade 150 collide with each other, there is a concern that wear or damage may occur.

In order to prevent this, in the present invention, it is possible to easily check whether or not the casing opening/closing cover 130 is coupled to the correct position in the cutout 125 by checking the exact joint position through the coupling confirmation unit 180.

On the other hand, the coupling confirmation unit 180 may include a footrest (183).

The scaffold 183 can be separated from the first pin hole 181 by the operator stepping on the engagement confirmation pin 185, the scaffold 183 is rotatably installed in the pump casing 120, the scaffold 183 The coupling confirmation pin 185 may be connected.

In addition, when the footrest 183 returns to the initial position when the footrest 183 is stepped on the footrest 183 by the elastic spring 187, the coupling confirmation pin 185 coupled to the footrest 183 is It may be configured to be inserted into the first pin hole 181.

Here, the coupling confirmation pin 185 is connected to the footrest 183, and when the casing opening/closing cover 130 is coupled to the cutout 125, since the footrest 183 is supported by the elastic force of the elastic spring 187 , When the first pin hole 181 and the second pin hole 182 are matched while being supported on the outer surface of the casing opening/closing cover 130, the foot plate 183 rises by the elastic force of the elastic spring 187 and the coupling confirmation pin The 185 may be inserted into the first pin hole 181.

Accordingly, the operator can grasp the position of the footrest 183 to determine whether the coupling confirmation pin 185 is inserted into the first pin hole 181.

The elastic spring 187 may be implemented as a torsion spring, and when the footrest 183 is moved downward by stepping on the footrest 183, the elastic force is accumulated while being twisted, and when the pressing force of the footrest 183 is released, the accumulated elastic force is It can be returned to the initial position again.

On the other hand, when a plurality of the coupling confirmation unit 180 is installed spaced apart from each other so that the coupling confirmation pins 185 of the plurality of coupling confirmation units 180 are all inserted into the first pin hole 181 corresponding to each, It can be determined that it is installed.

When the coupling check pin 185 is configured to be separated from the first pin hole 181 by the foot plate 183, the coupling check portion 180 may be located under the pump casing 120.

1 to 3, the centrifugal self-priming pump 100 having a grinder function according to an embodiment of the present invention may include a cover detachable operation unit 170.

The cover detachable operation unit 170 may be operated to separate the casing opening/closing cover 130 from the cutout 125 or to be coupled.

The cover detachable operation unit 170 may include a protruding hinge 175, an operation lever 171, and a lever fixing part 173.

The protruding hinge 175 may be formed to protrude from the side of the casing opening/closing cover 130, and the operation lever 171 is formed in a rod shape so that one end is rotatably coupled to the pump casing 120 by a hinge shaft. I can.

In addition, a guide hole 172 that is elongated in the vertical direction may be formed in the operation lever 171, and a protruding hinge 175 may be fitted and coupled to the guide hole 172.

A lever fixing part 173 for fixing the actuating lever 171 may be formed at a position corresponding to that the actuating lever 171 completely inserts the casing opening/closing cover 130 into the cutout 125.

In the embodiment, the lever fixing part 173 is formed in a ring shape so that the operating lever 171 cannot rotate in the direction in which the casing opening/closing cover 130 is separated from the cutout 125, but the lever fixing part 173 is operated. The lever 171 may be implemented in various types of mechanical structures such as a form of fastening a bolt to prevent rotation, a form of fixing with a clamp, and so on.

Depending on the rotation direction of the operating lever 171, the protruding hinge 175 is caught by the operating lever 171 and the casing opening/closing cover 130 enters the incision 125, or the casing opening/closing cover 130 from the incision 125 ) Can be easily separated or combined with the casing opening and closing cover 130 from the pump casing 120 in the form of separation.

In addition, the lever fixing part 173 fixes the operation lever 171 in a state in which the operation lever 171 is positioned to couple the casing opening/closing cover 130 to the cutout 125 so that the casing opening/closing cover 130 is cut It is possible to prevent separation from the unit 125.

In the embodiment, the lever fixing part 173 is formed in a ring shape so that the operating lever 171 cannot rotate in the direction in which the casing opening/closing cover 130 is separated from the cutout 125, but the lever fixing part 173 is operated. The lever 171 may be implemented in various types of mechanical structures such as a form of fastening a bolt to prevent rotation, a form of fixing with a clamp, and so on.

The cover detachable operation unit 170 may completely separate the casing opening/closing cover 130 from the pump casing 120 according to the rotation angle of the operation lever 171.

The centrifugal self-priming pump 100 having a grinder function according to an embodiment of the present invention may include a foreign substance detection sensor (not shown).

This foreign matter detection sensor may generate a signal for cleaning by detecting a state of accumulation of foreign matter in the casing opening/closing cover 130.

Meanwhile, the foreign matter detection sensor is installed under the casing opening/closing cover 130 and installed on the bottom of the suction passage 131 to sense the weight and may generate a signal according to the accumulation of foreign matter.

When a foreign material detection sensor detects a weight of more than a preset weight, it determines that the foreign material has accumulated and generates a detection signal, and the detection signal is transmitted to the control panel or the manager terminal to light a lamp, output a sound, or In the form of displaying an image, you can notify the outside that cleaning is necessary.

It will be described the action and effect between each of the components described above.

The centrifugal self-priming pump 100 having a grinder function according to an embodiment of the present invention is installed in the wastewater tank 200, and an inlet pipe 210 into which wastewater is introduced is installed in the wastewater tank 200, and the introduced wastewater A discharge pipe 250 is installed to transfer it to another place.

In addition, the centrifugal self-priming pump 100 having a grinder function is installed above the wastewater tank 200 and the suction pipe 230 extends to the wastewater tank 200 at the suction port 121 of the pump casing 120 and is located. , The discharge pipe 250 is connected to the discharge port 123 of the pump casing 120.

Meanwhile, in the centrifugal self-priming pump 100 having a grinder function, a drive motor unit 110 is coupled to the pump casing 120, and the drive shaft 111 passing through the pump casing 120 is inside the pump casing 120 The impeller 140 is coupled to, and a grinder blade 150 is coupled to the drive shaft 111 in front of the impeller 140.

The pump casing 120 is formed with a cutout 125 in a form in which a portion where the suction port 121 and the impeller 140 are located is partially cut off, and the cutout 125 has a casing for opening and closing the cutout 125 Opening and closing cover 130 is installed.

The casing opening/closing cover 130 has a suction passage 131 through which wastewater flowing into the suction port 121 is supplied to the impeller 140 is formed, and the impeller 140 from the suction passage 131 is located at a portion where the impeller 140 is located. ), the entry hole 133 into which the fluid enters is formed.

In addition, a grindering 160 is installed in the entry hole 133, and a guide protrusion 127 formed on the bottom of the casing opening/closing cover 130 is inserted into the guide groove 137 formed on the bottom of the cutout 125 The casing opening/closing cover 130 may be guided to the guide groove 137 and slide to seal or open the cutout 125.

A plurality of grinding grooves 161 through which the fluid passes are formed on the inner circumference of the grindering 160 so that foreign matters are caught and crushed by the grinder blade 150 at the same time as the fluid passes, and the grinding groove 161 is a front through which the fluid flows. It is formed in a shape that increases the area from to the rear.

On the other hand, the pump casing 120 may be formed with a coupling confirmation unit 180, the coupling confirmation unit 180 is a second portion of the pump casing 120 in which the cutout 125 is formed in the cutout 125 The pin hole 182 is installed, the first pin hole 181 is formed in the casing opening/closing cover 130 corresponding to the second pin hole 182, and the first pin hole 181 is located in the second pin hole 182. In the direction, the coupling confirmation pin 185 is coupled to the footrest 183, and the footrest 183 is supported by an elastic spring 187 so that the coupling confirmation pin 185 moves up and down together with the footrest 183.

In addition, the pump casing 120 is provided with a cover detachable operation unit 170 for easily separating or combining the casing opening/closing cover 130 from the cutout 125, and the cover detachment operation unit 170 is a pump casing An operating lever 171 rotating at 120 and a protruding hinge 175 protruding from the casing opening/closing cover 130 are coupled to the operating lever 171.

In addition, in the pump casing 120, the inlet pipe 210 and the pump casing 120 are connected to each other by a mating water pipe 190 to provide some of the wastewater flowing through the inlet pipe 210 to the pump casing 120 It is possible to provide a welcome object for generating the suction force of the impeller 140.

Centrifugal self-priming pump 100 having a grinder function according to an embodiment of the present invention configured as described above opens the water pipe 190 to open the water pipe 190 to the inside of the pump casing 120 through the inlet pipe 210 When the impeller 140 rotates by the drive motor unit 110 in a state where wastewater is supplied to the impeller 140, a suction force is generated by the impeller 140, so that the wastewater in the wastewater tank 200 is inlet 121 through the suction pipe 230. ).

Wastewater flowing into the suction port 121 passes through the suction passage 131 of the casing opening/closing cover 130 and is sucked into the impeller 140, and before the fluid is sucked through the impeller 140, the fluid is formed in the grindering 160. The foreign material passing through the crushing groove 161 and caught in the crushing groove 161 is crushed by the crushing protrusion 151 of the grinder blade 150 rotating together with the impeller 140, and cut by the cutting part 153 And enters the impeller 140 through the crushing groove 161.

At this time, since the grinding groove 161 is formed to have an area that gradually increases from the front to the rear where the fluid is sucked, when the fluid is discharged toward the impeller 140, the pressure increases and the foreign matter caught in the grinding groove 161 Can be easily removed.

In addition, when the discharge port 123 is blocked and a load is generated on the impeller 140, a part of the discharged fluid is circulated and discharged through the pumping water pipe 190 and the inlet pipe 210, thereby reducing the load applied to the impeller 140. By reducing it, it is possible to prevent burnout of the driving motor unit 110.

When cleaning is required due to the accumulation of foreign substances in the pump casing 120, release the fixing of the operating lever 171 from the lever fixing part 173 so that the casing opening/closing cover 130 can be separated from the cutout 125, Pull the operating lever 171 to rotate.

At this time, before operating the operation lever 171, the operation lever 171 is operated in a state in which the engagement confirmation pin 185 is separated from the first pin hole 181 by stepping on the foot plate 183.

On the other hand, when the operation lever 171 is pulled, the guide protrusion 127 of the casing opening/closing cover 130 moves along the guide groove 137 formed in the cutout 125 to open the cutout 125 and open The impeller 140 and the suction port 121 exposed to the outside through the cutout 125, and the suction passage 131 formed in the casing opening/closing cover 130 are cleaned of foreign matter accumulated or in the entry hole 133 The combined grinder 160 may be replaced or cleaned.

Then, when cleaning is complete, the operation lever 171 is pushed in a direction opposite to the direction in which the casing opening/closing cover 130 was pulled in order to insert the casing opening/closing cover 130 back into the cutout 125.

Before pushing the operation lever 171, the foot plate 183 is stepped on and the engagement verification pin 185 is damaged due to the protrusion of the engagement verification pin 185, or the casing opening/closing cover 130 cannot enter the cutout 125. Prevent it.

When the operating lever 171 is pushed, the operating lever 171 rotates, and the casing opening/closing cover 130 coupled to the protruding hinge 175 of the operating lever 171 is cut along the guide groove 137. And the casing opening/closing cover 130 seals the incision 125.

In this state, when the foot is removed from the footrest 183, when the first pin hole 181 and the second pin hole 182 are matched, the coupling confirmation pin 185 is raised by the elastic spring 187 of the footrest 183 However, if the casing opening/closing cover 130 is not positioned at the correct position of the cutout 125, the foot plate 183 is at a certain height because the end of the coupling confirmation pin 185 is supported on the outer surface of the casing opening/closing cover 130 It does not rise any more.

If the casing opening/closing cover 130 does not exactly match the cutout 125 according to the upward movement of the footrest 183, by re-adjusting the position of the casing opening/closing cover 130 so that the footrest 183 is upward, It is possible to couple the casing opening and closing cover 130 to the correct position of the cutout 125.

Here, when the casing opening/closing cover 130 is displaced due to a dimensional tolerance in the cutout 125, the grinding blade 150 positioned on the pump casing 120 side and the grindering 160 installed on the casing opening/closing cover 130 ) May cause damage to the grinding blade 150 or the grinding 160.

Accordingly, the casing opening/closing cover 130 is coupled to the correct position without shifting to the cutout 125 through the coupling confirmation unit 180.

And when the foreign matter detection sensor detects a weight of more than a preset weight during operation, it determines that the foreign matter has accumulated in the suction passage 131 and sends a detection signal to the control panel to turn it on, or transmits a detection signal to the administrator to perform cleaning. You can tell the outside of what you need to do.

Therefore, since the centrifugal self-priming pump 100 having a grinder function according to an embodiment of the present invention is installed on land, it is not only necessary to clean the exterior by foreign substances of wastewater, but also to minimize the occurrence of sticking or corrosion by foreign substances. I can.

In addition, it is possible to minimize clogging by foreign substances by crushing foreign substances contained in the suctioned fluid by the grinder blade 150 and the foreign substances sucked by the grinding 160, as well as cutting the foreign substances by the grinder blade 150 The cutting part 153 and the crushing protrusion 151 for pulverizing the foreign material are formed together, so that the foreign material can be easily crushed and cut to be processed.

In addition, the casing opening/closing cover 130 is detachably installed in the pump casing 120 to facilitate cleaning of foreign substances, and when the casing opening/closing cover 130 is separated, the grindering 160 and the grinder blade 150 and The impeller 140 is exposed to the outside so that maintenance can be easily performed.

In addition, by supplying the pick-up water to the pump casing 120 by connecting the pick-up water pipe 190 to the inlet pipe 210 through which the wastewater flows, it is possible to prevent a decrease in the efficiency of the pump due to idling, as well as the discharge port ( 123) is blocked, and an overload occurs in the impeller 140, by recirculating a part of the fluid flowing through the water pipe 190 to prevent overheating of the driving motor unit 110.

In addition, the grinding groove 161 of the grindering 160 is formed to increase the area from the front to the rear where the fluid is sucked, thereby increasing the pressure in the grinding groove 161, whereby foreign substances are caught in the grinding groove 161. This can be minimized.

In addition, the casing opening/closing cover 130 is guided and coupled to the cutout 125 by the guide protrusion 127 and the guide groove 137, and the casing opening/closing cover 130 is pumped by the coupling confirmation unit 180 Since it can be coupled to 120 at an exact position, it is possible to minimize leakage by installing the casing opening/closing cover 130 at the correct position, and to minimize the occurrence of wear or damage to the grinder blade 150 or the grinder 160. have.

In addition, as the operation lever 171 rotates, the casing opening/closing cover 130 is coupled to or separated from the cutout 125, so that the casing opening/closing cover 130 is easily coupled or separated from the pump casing 120. can do.

In addition, a foreign matter detection sensor may be installed to notify the outside to perform cleaning according to the accumulation of foreign matter.

In the above, the embodiments of the present invention have been described, but the scope of the present invention is not limited thereto, and the embodiments of the present invention are easily changed by those of ordinary skill in the technical field to which the present invention pertains and are recognized as equivalent. It includes all changes and modifications to the extent that it becomes available.

100: centrifugal self-priming pump having a grinder function 110: drive motor unit
111: drive shaft 120: pump casing
121: suction port 123: discharge port
125: incision 127: guide protrusion
130: casing opening and closing cover 131: suction passage
133: entry hole 137: guide groove
140: impeller 150: grinder blade
151: grinding protrusion 153: cutting portion
160: grinding 161: grinding groove
170: cover detachable operation part 171: operation lever
172: guide ball 173: lever fixing unit
175: protruding hinge 180: coupling confirmation part
181: first pin ball 182: second pin ball
183: footrest 185: coupling confirmation pin
187: elastic spring 190: water pipe
200: wastewater tank 210: inlet pipe
230: suction pipe 250: discharge pipe

Claims (7)

A drive motor unit in which the drive shaft rotates,
An impeller that is coupled to the drive shaft and sucks fluid as it rotates and discharges the sucked fluid,
A grinder blade that is installed in front of the impeller in which fluid is sucked and rotates with the impeller to crush the sucked foreign matter,
A pump casing in which the grinder blade and the impeller are accommodated therein, and a suction port through which fluid is sucked by the impeller and a discharge port through which the sucked fluid is discharged,
An incision formed by cutting a portion between the suction port and the impeller in the pump casing so that the inside of the pump casing can be opened and cleaned,
The incision is detachably coupled to the incision to open and close the incision, and a suction passage for moving the fluid introduced into the inlet to the impeller is formed, and the grinder is located on the inner periphery, together with foreign matter crushed by the grinder. Casing opening and closing cover in which an entry hole through which fluid enters the impeller is formed,
It is installed in the entry hole and includes a grinding for crushing foreign substances by mutually working according to the rotation of the grinder,
When the casing opening/closing cover is coupled to the incision part, the guide protrusion formed on one of the casing opening/closing cover and the incision part, and the other is formed at the correct position to prevent damage by colliding with the grinder blade. Centrifugal self-priming pump having a grinder function, characterized in that it includes a guide groove that is guided by inserting the guide protrusion. The method of claim 1,
The grinding is
As the grinder blade rotates, foreign matters are caught and pulverized, and a plurality of crushed grooves are formed in the inner circumference so that the fluid passes along with the crushed foreign matter,
The crushing groove is a centrifugal self-priming type having a grinder function, characterized in that the crushing groove is formed in a shape that increases in width from the front to the rear through which the fluid is introduced so that foreign matters caught in the crushing groove are easily discharged in the direction in which the impeller is located. Pump. delete The method of claim 1,
A centrifugal self-priming pump having a grinder function, characterized in that it comprises a pumping water pipe connecting the pump casing and an inlet pipe supplied to the inside of the wastewater tank and supplying the water to the inside of the pump casing. The method of claim 1,
The grinder blade is
A shaft coupling part coupled to the drive shaft,
A crushing protrusion protruding from the circumference of the shaft coupling part to the inner circumference of the grinder and crushing foreign matter flowing into the inner circumference of the grindering, and
Centrifugal self-priming pump having a grinder function, characterized in that it comprises a cutting portion formed with a plurality of cutting grooves to cut foreign substances flowing into the inner circumference of the grinding. The method of claim 1,
The pump casing is
Centrifugal self-priming pump having a grinder function, characterized in that the casing opening/closing cover comprises a coupling confirmation part for externally checking a state in which the cutout part is engaged. The method of claim 1,
Includes a cover detachable operation unit for detaching the casing opening and closing cover in the cutout,
The cover detachable operation part
A protruding hinge protruding from the casing opening/closing cover, and
Centrifugal self-priming pump having a grinder function, characterized in that it is rotatably installed on the pump casing and includes an operation lever that slides and moves the casing opening/closing cover at the cutout portion as the protruding hinge is coupled to rotate.

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