KR102520628B1 - Sludge transfer pump with inducer - Google Patents

Abstract

The present invention relates to a sludge transfer pump with improved transfer and discharge efficiency. The sludge transfer pump with the improved transfer and discharge efficiency of the present invention comprises: a transfer unit; a suction unit; and a driving unit. The suction unit includes: a coupling rod which transmits a power of the driving unit to the transfer unit; and an inducer. The inducer comprises: an extension unit located between the coupling rod and the transfer unit and extending axially along an outer diameter of the coupling rod from an end part of the coupling rod; and a protrusion unit protruding on the outer peripheral surface of the extension unit. According to the present invention, improved are transfer and discharge efficiency and performance of the sludge transfer pump.

Description

Sludge transfer pump with inducer {SLUDGE TRANSFER PUMP WITH INDUCER}

The present invention relates to a sludge transfer pump, and more particularly, to a dewatered sludge transfer pump with improved transfer and discharge efficiency.

In general, a dewatered sludge transfer pump refers to a device for forcibly transporting dehydrated sludge to a long distance.

Sludge can be divided into dewatered sludge (cake) and non-dewatered sludge.

As a specific configuration of the dewatered sludge transfer pump, a moineau pump classified as a rotary positive displacement pump is used.

The mono pump can move the sucked sludge accurately and continuously without pulsation by using a special shape and eccentric rotational movement. When the rotor is inserted into the stator and the rotor is rotated, a sealed cavity is created due to the difference in cross section and pitch between the two, and the suctioned sludge is quantitatively transported to the discharge port on the principle that the cavity moves forward according to rotation.

Therefore, the mono pump is capable of continuous, non-pulsating, quantitative transfer of high-concentration and high-viscosity sludge as well as water.

However, in order for the monopump to accurately transfer the sludge in a non-pulsating manner, the transported material must be compressed and sucked into the sealed cavity between the rotor and the stator.

However, the above-mentioned dewatered sludge generally has high viscosity, low or no fluidity, and physical properties such as moisture content change frequently, so there is a problem in that a large amount of air is mixed or transported without consolidation when introduced into the sludge transfer pump, which improves the transfer efficiency Or it causes a decrease in discharge efficiency at the discharge port.

Moreover, if there is a vacuum in the suction and dry friction between the rotor and the stator continues, the internal temperature of the stator rises, and the possibility of damaging the expensive stator increases due to internal heat.

Therefore, it can be said that the main factor determining the transfer and discharge efficiency and performance of the sludge transfer pump is to ensure that the sucked material is transported in a sufficiently compacted state.

From this point of view, referring to FIGS. 1 and 2, looking at the general structure of a sludge transfer pump including a mono pump, it is composed of a transfer unit 10, a suction unit 20 and a drive unit 30, and the transfer unit 10 A rotor (10a), a stator (10b) and a discharge port (10c) are provided, and the suction portion has a suction port (20a), a coupling rod (20b) for transmitting power of the drive unit (30) to the transfer unit (10), and a coupling A joint 20c connecting the rod 20b and the conveying part 10 is provided.

At this time, the space located between the inlet 20a and the transfer part 10 in the inlet 20 is called a compression zone 20d, and the sludge sucked through the inlet 20a is coupled to the coupling rod 20b. ) is a zone in which the sludge is consolidated due to the difference in the rate of transport by the screw provided in the transport unit 10 and the rate at which the cavity (H) of the transport unit 10 sucks in the sludge. performance can be achieved.

However, looking at the sludge transfer pump shown in FIG. 1, a screw is stopped at the end of the coupling rod 20b that meets the joint 20c, and the diameter of the joint 20c is Since it is thick compared to its diameter, accumulation of sludge sucked in from the front and rear of the joint 20c is likely to occur due to its structure.

Accumulation of sludge generated in the compression zone 20d forms a void between the sludge sucked into the transfer unit and the sludge that follows, and ultimately reduces transfer and discharge efficiency and performance.

The present invention is intended to solve the above-described problems, and improves the consolidation of the sludge sucked into the transfer unit by improving the accumulation phenomenon that may occur on the path in which the sludge introduced into the suction unit is transported, and finally, the transfer and discharge efficiency of the sludge transfer pump and to improve performance.

In order to solve the above problems, a sludge transfer pump according to an embodiment of the present invention includes a transfer unit, a suction unit, and a drive unit, and the suction unit includes a coupling rod and an inducer for transmitting power of the drive unit to the transfer unit. wherein the inducer is located between the coupling rod and the transfer unit, and extends in an axial direction from an end of the coupling rod along an outer diameter of the coupling rod and a protrusion protruding on an outer circumferential surface of the extension portion can include

In addition, in one embodiment of the present invention, the transfer unit may include a rotor and a stator.

In addition, in one embodiment of the present invention, the suction unit may further include a joint located between the coupling rod and the transfer unit and provided at an end of the coupling rod.

In addition, in one embodiment of the present invention, the extension part is positioned apart from the joint, and may cover all or part of the joint.

In addition, in one embodiment of the present invention, the extension part may be extended in a ring shape having a predetermined thickness.

Also, in one embodiment of the present invention, the joint may be a universal joint.

In addition, in one embodiment of the present invention, the inner diameter of the extension part may be larger than the rotational outer diameter of the universal joint.

In addition, in one embodiment of the present invention, the outer diameter of the extension portion may decrease toward the end portion.

In addition, in one embodiment of the present invention, the protrusion may be provided with one or more selected from the group consisting of a wing shape, a blade shape, a propeller shape, a screw shape, and combinations thereof.

In addition, in one embodiment of the present invention, the protrusion may be provided with a plurality on the outer circumferential surface.
In addition, in one embodiment of the present invention, the coupling rod may be provided to have a larger diameter than the maximum diameter of the joint.
In addition, in one embodiment of the present invention, the universal joint has one end connected to the end of the coupling rod and the other end connected to a drive joint member having a first coupling hole, one end connected to the end of the rotor and the other end connected to the above A driven joint member having a second coupling hole surrounding the other end of the drive joint member and communicating with the first coupling hole, and inserted into the first coupling hole and the second coupling hole to couple the drive joint member and the driven joint member A coupling member and a joint sleeve closely adhered to an outer circumferential surface of the driven joint member to block the second coupling hole so that the inserted coupling member does not escape.
In addition, the extension part is provided in a cylindrical shape with both ends open, one end connected to the end of the coupling rod, and the other end extending in the axial direction to surround all or part of the drive joint member and the joint sleeve , The outer diameter of the extension part is the same as the diameter of the coupling rod, and the inner diameter of the extension part has a size such that the inner circumferential surface of the extension part is spaced apart from the outer circumferential surface of the joint sleeve wrapped around the extension part, to the end of the coupling rod When the transported sludge is transported to the transfer unit, it may not interfere with the eccentric rotational movement of the universal joint while not accumulating between the joint sleeve and the coupling rod.

The present invention has the advantage of excellent transfer efficiency regardless of the type of sludge by treating all non-dewatered sludge, including dewatered sludge (cake), with a smooth flow without accumulation according to the above-described configuration and coupling relationship.

The present invention solves the accumulation phenomenon that may occur on the transport path of the sludge introduced into the suction unit according to the above-described configuration and coupling relationship, and accordingly, sludge that cannot be expected to flow, such as high concentration and high viscosity sludge, is transported with excellent efficiency and performance There are advantages to doing so.

In addition, since the transfer efficiency and performance are excellent, the possibility of dry friction between the rotor and the stator is reduced, and thus durability of the stator and the rotor is improved.

1 is a view showing the general structure of a sludge transfer pump.
Figure 2 (a) is a view showing the general structure of a mono pump used in the sludge transfer pump, Figure 2 (b) is a cross-sectional view of the state in which the stator and rotor of Figure 2 (a) are coupled, viewed from X1.
3 is a view showing the internal structure of a sludge transfer pump according to an embodiment of the present invention.
4 is a perspective view showing a part of the internal structure of a sludge transfer pump according to an embodiment of the present invention.
5 is a view showing the detailed configuration of the coupling structure and joint between the joint and the coupling rod in the sludge transfer pump according to an embodiment of the present invention.
Figure 6 is a view of Figure 4 in the X2 direction in the sludge transfer pump according to an embodiment of the present invention, and is a cross-sectional view showing the internal structure of the transfer unit and the joint.
7 is a view of FIG. 4 viewed from the X3 direction in the sludge transfer pump according to an embodiment of the present invention.
8 is a diagram showing a rotation radius of a joint connecting a rotor and a coupling rod when the pump is driven in a sludge transfer pump according to an embodiment of the present invention.
9 is a view showing the rotational outer diameter of the joint connecting the rotor and the coupling rod when the pump is driven in the X3 direction of FIG. 4 in the sludge transfer pump according to an embodiment of the present invention.

This specification clarifies the scope of the present invention, explains the principles of the present invention, and discloses embodiments so that those skilled in the art can practice the present invention. The disclosed embodiments may be implemented in various forms.

Expressions such as “include” or “may include” that can be used in various embodiments of the present invention indicate the existence of a function, operation, or component that has been disclosed, and may include one or more additional functions, operations, or components. components, etc. are not limited. In addition, in various embodiments of the present invention, terms such as “include” or “have” are intended to indicate that there is a feature, number, step, operation, component, part, or combination thereof described in the specification, but one or other features, numbers, steps, operations, components, parts, or combinations thereof, or any combination thereof, is not precluded from being excluded in advance.

When an element is referred to as “connected or coupled” to another element, the element may be directly connected or coupled to the other element, but there is a gap between the element and the other element. It should be understood that other new components may exist in On the other hand, when an element is referred to as being “directly connected” or “directly coupled” to another element, it will be understood that no new element exists between the element and the other element. should be able to

Terms such as first and second used in this specification may be used to describe various components, but the components should not be limited by the terms. Terms are used only to distinguish one component from another.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.

First, the present invention relates to a sludge transfer pump, and more particularly, to a dewatered sludge transfer pump equipped with an inducer 230 and having improved transfer and discharge efficiency.

To this end, referring to Figures 3 and 4 showing the main structure of the sludge transfer pump according to an embodiment of the present invention, the sludge transfer pump consists of a transfer unit 100, a suction unit 200 and a drive unit 300 includes

Considering the role of each part, the driving part 300, the suction part 200, and the conveying part 100 will be described in order.

The driving unit 300 includes a driving motor 310 to supply driving force, and transmits driving force, particularly rotational force, to the suction unit 200 through a driving shaft 320 connected to the driving motor 310 .

The suction part 200 serves to suck the material (eg, sludge) to be transported by the sludge transfer pump according to an embodiment of the present invention from the outside, and sucked by the driving force transmitted by the driving part 300 It serves to transfer the material to the transfer unit 100.

The suction unit 200 may include a case body, a suction port 210 , a coupling rod 220 , a joint 240 and an inducer 230 .

The case body refers to a body forming the exterior of the suction part 200, and the coupling rod 220, the joint 240, and the inducer 230 included in the case body are removed from the outside. It serves to protect and form an appearance so that the sucked sludge can be compacted and transported to the transfer unit 100 and guide it.

The suction hole 210 is provided on one side of the case body, and the suction hole 210 is a through hole passing through the case body and is a passage through which external substances can flow into or be sucked into the case body.

In the shape of the inlet 210, it may be provided in a form commonly used in the art to which the present invention belongs variously according to the purpose of use, and an additional device for increasing the intake amount or intake efficiency may be connected and provided. .

For example, the inlet 210 may additionally include a hopper or a kneading screw.

The coupling rod 220 serves to transmit the driving force supplied by the driving motor 310 of the driving unit 300 to the transfer unit 100, and one end of the coupling rod 220 is connected to the driving unit 300. ) is connected to the drive shaft 320, and the other end of the coupling rod 220 may be connected to the driven part of the transfer unit 100.

For example, the driven part may be the rotor 110, which will be described later.

In the connection, connecting members commonly used to connect shafts to shafts in the art to which the present invention pertains, including pin joints and universal joints, may be used.

In one embodiment of the present invention, preferably, a universal joint may be employed to enable eccentric rotational motion.

The coupling rod 220 may further include a screw or blade on an outer circumferential surface along an axis of the coupling rod 220 to increase transfer efficiency.

The diameter of the shaft of the coupling rod 220 may be variously adopted depending on the purpose of use, and in one embodiment of the present invention, it is preferable that the diameter of the shaft is larger than the rotational outer diameter 240a of the joint 240, which will be described later do it with

A joint 240 and an inducer 230 may be provided at one end of the coupling rod 220 .
The coupling rod 220 may have a larger diameter than the maximum diameter of the joint 240 .

4 and 5, the joint 240 is located between the coupling rod 220 and the transfer part 100, and is provided at an end of the coupling rod 220 to 220) and the rotor 110 of the transfer unit 100.

The sludge transfer pump according to an embodiment of the present invention may be a mono pump (moineau pump) type transfer pump, in which the rotor 110 of the transfer unit 100 is eccentric with respect to the drive shaft 320 Since rotational motion is performed, the joint 240 may be provided as a universal joint.

However, it is not limited thereto, and the joint 240 is interpreted as being included in one embodiment of the present invention as long as the joint 240 is a type of joint that can connect and transmit power even when the axes to be connected are not parallel or when two axes rotate eccentrically. It should be.

When the joint 240 is a universal joint, the universal joint is provided at an end of the coupling rod 220 and transmitted from the driving unit 300 to the coupling rod 220 a drive joint member 241 that transmits the driving force, and a driven joint member that is provided at an end of the rotor 110 of the transfer unit 100 and transmits the driving force transmitted by the drive joint member 241 to the rotor 110. 242 and a coupling member 243 coupling the driving joint member 241 and the driven joint member 242.
Specifically, one end of the drive joint member 241 may be connected to an end of the coupling rod 220, and a first coupling hole 241a may be provided at the other end.
In addition, the driven joint member 242 has one end connected to the end of the rotor 110 and the other end surrounding the other end of the drive joint member 241 and communicating with the first coupling hole 241a. (242a) may be provided.
In addition, a coupling member 243 may be inserted into the first coupling hole 241a and the second coupling hole 242a, and thus the driving joint member 241 and the driven joint member 242 are coupled. It can be.

When the joint 240 is a universal joint, the universal joint is a group consisting of a clamp ring, a joint sleeve, a joint sheath, and a combination thereof It may further include a coupling complementary member 244 including any one or more selected from.

The coupling complement member 244 may serve to prevent the coupling member 243 from being separated from a position connecting the drive joint member 241 and the driven joint member 242 .
Specifically, in one embodiment of the present invention, the coupling complementary member 244 may be a joint sleeve 244a, and the joint sleeve 244a is in close contact with the outer circumferential surface of the driven joint member 242.
The joint sleeve 244a in close contact with the outer circumferential surface of the driven joint member 242 blocks the second coupling hole 242a and is inserted into the first coupling hole 241a and the second coupling hole 242a. The member 243 is prevented from being separated from the first coupling hole 241a and the second coupling hole 242a.

When the joint 240 is a universal joint, the universal joint is provided with a structure in which the driving joint member 241 can be separated and reassembled at the end of the coupling rod 220. can

For example, it may be provided in a bolt nut method, a structure in which the drive joint member 241 and the end of the coupling rod 220 are coupled by a pin communicating with each other.

At this time, it should not be interpreted as meaning excluding the case where the drive joint member 241 is integrally formed with the end of the coupling rod 220 by casting or the like.

Referring to FIG. 6, the inducer 230 is sucked in through the suction port 210, and the sludge transported by the coupling rod 220 accumulates in the compression zone as described above. serves to prevent

The inducer 230 is located between the coupling rod 220 and the transfer part 100, and includes an extension part 231 and a protrusion part 232.

The extension part 231 may extend in an axial direction from an end of the coupling rod 220 along the outer diameter 231a of the coupling rod 220 .

4 and 6, the extension portion 231 may extend in an annular shape having a predetermined thickness 231c, but is not limited thereto, and the outer diameter 231a of the coupling rod 220 It should be interpreted as belonging to one embodiment of the present invention if it is in a form that can be extended in the axial direction along and transferred to the end of the coupling rod 220 to transfer the sludge to the transfer unit 100.

6 and 7, the extension part 231 is located at a distance from the joint 240, and the end of the coupling rod 220 to cover all or part of the joint 240 A predetermined length may extend in the axial direction along the outer diameter 231a of the coupling rod 220.
Specifically, in one embodiment of the present invention, the extension part 231 is provided in a cylindrical shape with both ends open, one end connected to the end of the coupling rod 220, and the other end of the drive joint member 241 It extends in the axial direction so as to cover all or part of the joint sleeve 244a.
In addition, the outer diameter of the extension part 231 is the same as the diameter of the coupling rod 220, and the inner diameter of the extension part 231 is the inner circumference of the extension part 231 wrapped around the extension part 231. It has a size spaced apart from the outer circumferential surface of the joint sleeve 244a.
Accordingly, the sludge transported to the end of the coupling rod 220 does not accumulate between the joint sleeve 244a and the coupling rod 220 while being transported to the transport unit 100, and at the same time the universal joint may not interfere with the eccentric rotational motion of

As a result, the extension part 231 allows the sludge transported by the coupling rod 220 to be sucked into the conveying part 100 by consolidation without being caught on the joint 240 and accumulated.

Referring to FIG. 7 , when the joint 240 is a universal joint, the inner diameter 231b of the extension part 231 is preferably greater than the rotational outer diameter 240a of the universal joint 240.

8 and 9, the outer diameter of rotation 240a means that, when the joint 240 is a universal joint, the universal joint performs an eccentric rotational movement with respect to the drive shaft 320 , it can be interpreted as meaning a rotation radius formed along the farthest point on the universal joint from the drive shaft 320 .

As the inner diameter 231b of the extension part 231 is larger than the rotational outer diameter 240a of the universal joint 240, the extension part 231 does not interfere with the movement of the joint 240, and the coupling The sludge transported by the rod 220 may be provided to the transfer unit 100 .

Referring to FIG. 6 , the outer diameter 231a of the extension part 231 may decrease towards the end. This is to make the sludge transferred from the coupling rod 220 easily transfer to the transfer unit 100 by forming an inclination on the outer circumferential surface of the extension part 231 .

6 and 7, the protruding portion 232 protrudes on the outer surface of the extension portion 231, and is sucked in like the screw 221 of the coupling rod 220. This is to increase the transport efficiency of the sludge.

The protrusion 232 may include one or more selected from the group consisting of a wing shape, a blade shape, a propeller shape having a plurality of wings and blades, a screw shape, and combinations thereof. .

However, it is not limited thereto, and it can be understood that any shape that can be protruded and formed on the outer circumferential surface in order to increase the transport efficiency of the sucked sludge belongs to an embodiment according to the present invention.

A plurality of protrusions 232 may be provided on the outer circumferential surface, and preferably, the plurality of protrusions 232 are symmetrical or opposite to each other about the axis of the coupling rod 220. Located on the outer circumferential surface it is desirable

This is to make the sludge uniformly compacted in the compression zone by making the transport flow of the sludge uniform.

Next, the transfer unit 100 serves to suck in the sludge supplied by the suction unit 200 and transport the sludge to a target location through an outlet.

The sludge transfer pump according to an embodiment of the present invention may be a mono pump or moineau pump, and thus the transfer unit 100 may include a rotor 110 and a stator 120.

Referring to FIG. 2, when the sludge transfer pump according to an embodiment of the present invention is a mono pump (moineau pump), the special shape of the rotor 110 and the stator 120 is the cross section and pitch difference between the two Thus, a sealed cavity is formed inside the stator 120, and since the cavity has a constant area, the transfer unit 100 can continuously discharge the sucked sludge in a fixed amount.

As the sludge transfer pump according to an embodiment of the present invention is provided with the above configuration, the sludge transferred from the coupling rod 220 does not accumulate in the joint 240 and is smoothly transferred to the compression zone. As a result, the sludge is compacted with a very high degree of uniformity and supplied to the transfer unit 100.

As the sludge is compacted with high uniformity and supplied to the transfer unit 100, the possibility of air being sucked into the sludge or voids occurring in the sludge is significantly lowered, which means that the mono pump (mono pump, moineau pump) continuously By enabling the transfer, the transfer and discharge efficiency of the sludge transfer pump according to an embodiment of the present invention is significantly improved.

In addition, since the possibility of air being sucked in or a void is significantly reduced, as described above, the possibility of continuing dry friction between the rotor 110 and the stator 120 is significantly reduced, which causes the stator 120 and the rotor ( 110) provides an effect of remarkably increasing the durability.

Considering that the rotor 110 and the stator 120 are easily worn due to continuous frictional movement and replacement is continuously required, thereby increasing maintenance and repair costs, the sludge transfer pump according to an embodiment of the present invention The effect it provides can be seen as very encouraging.

The above description of the present invention is for illustrative purposes, and those skilled in the art can understand that it can be easily modified into other specific forms without changing the technical spirit or essential features of the present invention. will be. Therefore, it should be understood that the embodiments described above are illustrative in all respects and not intended to be limiting.

For example, the present invention has been described with reference to an embodiment shown in the drawings, but this is only exemplary, and those skilled in the art will understand that various modifications and variations of the embodiment are possible therefrom. will be.

Therefore, the true technical protection scope of the present invention is indicated by the technical spirit of the claims to be described later, and all changes or modifications derived from the image and scope of the claims and their equivalent concepts are included in the scope of the present invention. should be interpreted as

10: transfer unit 10a: rotor
10b: stator 10c: discharge port
20: inlet 20a: inlet
20b: coupling rod 20c: joint
20d: compression zone 30: driving unit
100: transfer unit 110: rotor
120: stator 200: intake
210: inlet 220: coupling rod
221: screw 230: inducer
231: extension 231a: outer diameter
231b: inner diameter 231c: thickness
232: protrusion 240: joint
240a: outer diameter of rotation 241: drive joint member
241a: first coupling hole 242: driven joint member
242a: second coupling hole 243: coupling member
244: coupling complementary member 244a: joint sleeve
300: driving unit 310: driving motor
320: drive shaft

Claims (10)

It includes a conveying part, a suction part and a driving part,
The transfer unit includes a rotor and a stator,
the suction part,
A coupling rod that transmits the power of the driving unit to the transfer unit;
A joint and an inducer located between the coupling rod and the transfer unit and provided at an end of the coupling rod,
The coupling rod is provided to have a larger diameter than the maximum diameter of the joint,
The joint is a universal joint,
The universal joint,
A drive joint member having one end connected to an end of the coupling rod and the other end having a first coupling hole;
A driven joint member having one end connected to an end of the rotor, the other end surrounding the other end of the drive joint member, and having a second coupling hole communicating with the first coupling hole;
A coupling member inserted into the first coupling hole and the second coupling hole to couple the drive joint member and the driven joint member;
And a joint sleeve in close contact with the outer circumferential surface of the driven joint member so that the inserted coupling member does not escape by blocking the second coupling hole,
The inducer,
It is located between the coupling rod and the transfer unit and extends in the axial direction from the end of the coupling rod along the outer diameter of the coupling rod,
At a position spaced apart from the joint, an extension portion covering all or part of the joint and a protrusion protruding on an outer circumferential surface of the extension portion,
The extension part is provided in a cylindrical shape with both ends open, one end connected to the end of the coupling rod, and the other end extending in the axial direction to surround all or part of the drive joint member and the joint sleeve,
The outer diameter of the extension is the same as the diameter of the coupling rod,
The inner diameter of the extension part has a size such that an inner circumferential surface of the extension part is spaced apart from an outer circumferential surface of the joint sleeve wrapped around the extension part,
Characterized in that, when the sludge transferred to the end of the coupling rod is transferred to the transfer unit, it does not accumulate between the joint sleeve and the coupling rod and does not interfere with the eccentric rotational movement of the universal joint. Equipped with a sludge transfer pump. delete delete delete delete delete delete According to claim 1,
The extension part, characterized in that the outer diameter decreases toward the end, the inducer-equipped sludge transfer pump. According to claim 1,
The sludge transfer pump with an inducer, characterized in that the protrusion is provided with at least one selected from the group consisting of a wing shape, a blade shape, a propeller shape, a screw shape, and combinations thereof. According to claim 1,
The sludge transfer pump with an inducer, characterized in that a plurality of protrusions are provided on the outer circumferential surface.

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