KR20230153004A - Propeller-type centrifugal pumping apparatus for required to move organic sludge position - Google Patents

Abstract

The present invention relates to a propeller-type centrifugal pumping device necessary for moving organic liquid sludge to a position at a predetermined height where the next solid-liquid separation process is performed to separate the organic liquid sludge of food waste flowing in from the previous process into solids and moisture. In order to be transported and collected effectively, the centrifugal force caused by high-speed rotation and the driving force of the propeller-type rotary blade transfer kinetic energy to the liquid sludge, and this kinetic energy is converted into potential energy. The structure is simple, compact, low noise, and low load. This relates to a propeller-type centrifugal pumping device required to move the position of organic liquid sludge, which has been improved to minimize the problem.

Description

Propeller-type centrifugal pumping apparatus for required to move organic sludge position}

The present invention relates to a propeller-type centrifugal pumping device required to move the position of organic liquid sludge, and more specifically, to a solid-liquid separation process for separating the organic liquid sludge of food waste that has been pulverized and microbially decomposed and fermented from the previous process into solids and moisture. The propeller-type centrifugal pumping device required to move the position of organic liquid sludge has a simple, compact structure, low noise, and minimal load so that it can be transported to a location at a predetermined height. It's about.

In general, food waste reduction treatment methods can be roughly divided into two types: heating and drying food waste, or reducing reduction treatment through decomposition and fermentation by microorganisms.

Additionally, crushing or pulverizing organic food waste into the smallest unit size in a stirring tank can increase weight loss efficiency and reduce energy use.

In particular, the microbial fermentation method can maximize weight reduction efficiency because the survival rate of microorganisms increases and the decomposition and fermentation speed increases when the organic substances in the stirrer are broken into small pieces and the exposed surface area is increased as much as possible.

In addition, in the process of aerobic microbial decomposition and fermentation activities for organic substances, carbon dioxide (CO2) and moisture (H2O) are inevitably generated, the carbon dioxide is dispersed into the atmosphere, and the moisture is vaporized into the atmosphere under a medium temperature of 60 to 70 ℃. It is heated and evaporated, but additional energy is required to raise the temperature, and the moisture evaporation time is also prolonged, reducing efficiency.

Therefore, in order to maintain the desired processing capacity within a certain processing time (usually 24 hours), eco-friendly treatment is performed by separating solid materials mixed with moisture into solids and liquids, discharging the moisture into sewage, and discharging the solids out of the food waste reduction processor and recycling them as organic fertilizer. The plan is receiving positive response.

However, solid-liquid separation must be done at a certain height from the ground so that the separated solids can be loaded into the container, and the operation of the drying device of the food waste reduction processor provides an appropriate moisture content of solids (group standard certification criteria) set by the Food Waste Disposal Cooperative (Group Standard Certification Standard). (less than 40%), a pumping device that can transport the liquid sludge subject to solid-liquid separation from the floor to a height of about 1M is needed.

The most common pumping devices include bucket pumps, piston pumps, gear pumps, and diaphragm pumps, which are appropriate for each application, but these do not pump properly due to jamming or jamming of organic liquid sludge mixed with organic substances, making it difficult to pump smoothly. There was a difficult problem.

For example, in Domestic Registered Utility Model No. 20-0342457 ‘Pulverizing Pump for Sludge’ and Registered Utility Model No. 20-0426662 ‘Pump for Sludge’, a volute pump using centrifugal force was proposed. They are equipped with separate cutting blades at the inlet or outlet to cut the incoming sludge.

In addition, Domestic Patent No. 10-0960175, 'Pulverizing and pumping transport device for food waste and sewage sludge', proposed transport using a screw and flat blade turbine type impeller for horizontal transport and grinding.

However, the pumps that transport the sludge are designed to transport the sludge while pulverizing it at the inlet or outlet where the sludge flows. However, when a large amount of organic material is introduced, problems occur in the operation of the impeller and the structures are complicated, so a large amount of sludge is transported. There is a need for a pumping device that can easily lift sludge mixed with organic substances.

Domestic registered utility model No. 20-0342457 (announced on February 18, 2004) Domestic registered utility model No. 20-0426662 (announced on September 18, 2006) Domestic registered patent No. 10-0960175 (announced on May 26, 2010)

Therefore, the propeller-type centrifugal pumping device required to move the organic liquid sludge of the present invention effectively moves to a position at a predetermined height where the next solid-liquid separation process is performed to separate the organic liquid sludge of food waste flowing in from the previous process into solids and moisture. It is designed to be transported and collected, and the centrifugal force caused by high-speed rotation and the driving force of the propeller-type rotary blade transfer kinetic energy to the liquid sludge, and this kinetic energy is converted into potential energy. The structure is simple and compact, with low noise and low load. The purpose is to provide a propeller-type centrifugal pumping device needed to move the improved organic liquid sludge to a minimum level.

The propeller-type centrifugal pumping device required to move the position of the organic liquid sludge of the present invention to achieve the above object is an inlet pipe interconnected with the outlet of the stirring device that performs the preceding process so that the organic liquid sludge mixed with organic solids flows in. and a main body having a cylindrical shape having a discharge pipe interconnected with a storage box of a solid-liquid separation device that performs the next process after being transferred to a predetermined height; An impeller having a rotating shaft installed within the main body and blades mounted on the rotating shaft to transport liquid sludge; a drive motor interconnected through a coupling to rotate the impeller; In the propeller-type centrifugal pumping device required to move the position of organic liquid sludge, including a housing member supporting the upper and lower parts of the rotation axis of the impeller, the main body has a diameter to provide a wide space into which the organic liquid sludge flows smoothly. Organic liquid sludge flows into this large support pipe and the lower part inserted into this support pipe, protrudes upward, and is fastened with bolts and nuts to seal each other. As centrifugal force and kinetic energy are generated, the organic liquid sludge changes into potential energy. It is arranged in an upright position while being separated by a small-diameter transfer pipe that provides space for transport; The blades of the impeller are formed in the shape of a spiral propeller, and the blades are not formed continuously on the rotating shaft but are spaced apart to be divided into a first propeller to a third propeller, and the spaced portions are formed in the first compression movement space and the second propeller. A feature of the technical configuration is that it is designed to be a compressed movement space.

In addition, the present invention is that the housing member that supports the upper and lower parts of the rotating shaft is equipped with a durable ceramic bearing or a bushing member made of polyether ether ketone (peek) material to prevent shaking of the rotating shaft at high speed. It is characterized by technical composition.

In addition, the present invention is a feature of the technical configuration that the lower ends of the first to third propellers of the blades running perpendicular to the rotation axis are formed as blades with inclined surfaces to cut organic substances contained in the organic liquid sludge being moved. Do it as

In addition, the present invention is characterized in its technical configuration in that the blades formed at the lower tips of the first to third propellers are straight or serrated.

In addition, the present invention forms arc-shaped seating grooves at the lower end of the rotating shaft and the lower housing member, and arranges ball bearings in the seating grooves to prevent slipping and ensure smooth operation when the repulsive force that acts during the transfer of organic liquid sludge is applied to the lower end of the rotating shaft. It is characterized by allowing rotation.

The propeller-type centrifugal pumping device required to move the organic liquid sludge of the present invention through the above configuration has a simple and compact structure, enables low noise and minimized load, and provides a first compression movement space and a second compression movement space. Kinetic energy is transferred to the liquid sludge by centrifugal force caused by the high-speed rotation of the propeller-type impeller, which is spaced apart from the first propeller to the third propeller, and this kinetic energy is converted into potential energy of the liquid sludge to carry out the next solid-liquid separation process. It is very economical because it can be efficiently transported to a certain height.

In addition, the present invention prevents shaking and minimizes noise by supporting the upper and lower portions of a rotating shaft rotating at high speed by a housing member equipped with a durable ceramic bearing or a bushing member made of polyetheretherketone.

In addition, in the present invention, the blade having an inclined surface formed at the lower end of the first to third propellers of the blade is formed in a straight or serrated shape to cut the organic material contained in the organic liquid sludge to be moved, thereby enabling the transfer of organic liquid sludge. It is smooth and reduces the load, thereby increasing work efficiency.

In addition, the present invention places ball bearings in the seating grooves formed at the lower end of the rotating shaft and the lower housing member, thereby preventing slipping and smooth rotation when the repulsive force that acts during the transfer of organic liquid sludge is applied to the lower end of the rotating shaft, thereby increasing work efficiency. There is a cost saving effect.

Figure 1 is an exploded perspective view showing a food waste reduction and treatment device equipped with a propeller-type centrifugal pumping device required to move the position of organic liquid sludge according to the present invention.
Figure 2 is a perspective view showing a propeller-type centrifugal pumping device required to move the position of organic liquid sludge according to the present invention.
Figure 3 is a longitudinal cross-sectional view of Figure 2.
Figures 4 (A) and (B) are perspective views of the impeller according to the present invention.
Figure 5 is an enlarged perspective view of portion 'A' of Figure 3.

Hereinafter, the present invention will be described in detail using the attached drawings. However, since the attached drawings show preferred embodiments of the present invention, the scope of the present invention is not limited by these drawings. In addition, even if the configuration is essential for carrying out the present invention, the detailed description of the configuration that belongs to the known technology or that can be easily implemented by a person skilled in the art from the known technology will be omitted.

First, referring to FIG. 1, the existing food waste reduction treatment device performs a preceding process of crushing, pulverizing, and decomposing the food waste supplied to the input port 62 and producing organic liquid sludge mixed with organic solids fermented by decomposition with microorganisms. a solid-liquid separation device (7) for performing the next process having a stirring device (6) for supplying the organic liquid sludge, and a storage box (71) for receiving the organic liquid sludge, and an outlet (61) of the stirring device (6) connected to each other. A main body (1) having a cylindrical shape having an inflow pipe (11) and an discharge pipe (12) that is connected to the storage box (71) of the mutual solid-liquid separator (7) after being transferred to a predetermined height, and within the main body (1). An impeller (2) having a rotating shaft (21) installed on the axis and a blade (22) mounted on the rotating shaft (21) to transport organic liquid sludge, and connected to each other by a coupling (31) to rotate the impeller (2). The present invention includes a driving motor 3 and housing members 4 and 4' supporting the upper and lower parts of the rotation shaft 21 of the impeller 2, and the present invention uses the basic components.

Meanwhile, the purpose of the present invention is a solid-liquid separation device that separates organic liquid sludge, which is a pulverized product of decomposed and fermented food waste, into solids and moisture by adding moisture and microorganisms while stirring, crushing, and decomposing food waste through a stirring device (6). It is improved so that it can be transported to a position at a predetermined height where the storage box 71 of (7) is located, and the structure is simple and compact, low noise, and load are minimized to ensure efficient transport.

The organic liquid sludge, which is the material to be transported, has mass because it contains not only pure water but also organic solids, and the sludge has various sizes and shapes (especially bean sprout fibers, etc.), causing interference with the internal structure of the main body (1). This causes noise and malfunctions, and the pumping structure placed inside the limited space of the food waste reduction and treatment device must be small, simple, corrosion-resistant, and have low noise performance.

In addition, there are ways to raise organic liquid sludge to a certain height by using hydraulic pressure or shaftless screws, but these are unsuitable as they have complex structures, are expensive, and are inevitably large in size, so they are transported as small-sized and simple structures. An optimal pumping means is needed to facilitate this.

In addition, the optimal method for simply lifting organic liquid sludge mixed with organic substances is a pump structure that transports the liquid sludge to a high position using the centrifugal force of the high-speed rotating shaft and the driving force of the propeller-type impeller (2). .

The present invention to solve this problem includes a main body (1) that guides the inflow and transport of organic liquid sludge, a blade (22) of the impeller (2) for smooth transport of the organic liquid sludge, and a rotating shaft (21) of the impeller (2). Improving the support structure of

First, the main body (1) of the present invention is placed in an upright position to transport organic liquid sludge to a position at a predetermined height as shown in Figures 2 and 3, but includes a support pipe (1a) with a large diameter and a transfer pipe (1a) with a small diameter. It is formed separately as 1b) and is joined by fastening with mutual bolts and nuts.

The support pipe (1a) is the transfer pipe (1b) so that the organic liquid sludge flowing in from the stirring device (6) can be smoothly transferred upward to the height of the storage box (71) of the solid-liquid separation device (7). It is desirable to have a large space 1.5 to 2 times larger than the diameter.

The transfer pipe (1b) has an open bottom so that the organic liquid sludge flowing into the support pipe (1a) can be smoothly transferred to a high position of about 0.8 to 1.5M in the storage box 71 of the solid-liquid separation device 7. It is inserted into the support pipe (1a), protrudes upward, and is fastened with bolts and nuts so that the middle portion is hermetically coupled to the support pipe (1a), and the organic liquid sludge is converted into potential energy due to the generation of centrifugal force and kinetic energy. It is done to provide space to change and move.

And at the lower part of the support pipe (1a) of the main body (1) and the upper part of the transfer pipe (1b), there is a housing member (4) that supports and seals the upper and lower parts of the rotation axis (21) of the impeller (2) while preventing leakage of organic liquid sludge. , 4') is provided, and this housing member (4, 4') has a durable ceramic bearing or a bushing member (41) made of polyetheretherketone inside to prevent the shaking of the high-speed rotating rotary shaft (21). ) is installed.

Meanwhile, as shown in FIG. 3, the blades 22 of the spiral-shaped impeller 2 are not formed continuously on the rotation shaft 21, but are spaced apart to be divided into the first propeller 22a to the third propeller 22c. It is formed, and the spaced portion is configured to provide a first compression movement space (13) and a second compression movement space (14).

And the first compression movement space 13 and the second compression movement space 14 are where organic liquid sludge is transported and deposited by the kinetic energy generated by the rotational centrifugal force of the first propeller (22a) and the second propeller (22b). Although centrifugal force is weakened, it not only maintains a vacuum state, but also serves as a space to increase water pressure, helping to smoothly transport organic liquid sludge.

Meanwhile, as shown in FIG. 4 (A), the lower ends of the first propellers 22a to 3rd propellers 22c of the blades 22 running at right angles to the rotation axis 21 are provided with a straight blade 23 having an inclined surface. ) is formed to cut the organic substances contained in the organic liquid sludge that flows into the lower part of the transfer pipe (1b) and is transferred while being stacked in the first compression movement space 13 and the second compression movement space 14.

And the blades 23 formed at the lower tips of the first propellers 22a to 3rd propellers 22c of the blades 22 are not limited to a straight shape and can be used in organic liquid sludge as shown in (B) of FIG. 4. It can be formed in a sawtooth shape to increase the cutting area for cutting the included organic material to increase cutting efficiency.

In addition, as shown in Figures 3 and 5, the organic liquid sludge is pushed up by the action of kinetic energy due to centrifugal force and water pressure in the direction of the upper discharge pipe 12 of the transfer pipe 1b, and as the transfer force acts in the upward direction, it acts as a reaction. When a force is applied to the rotating shaft 21 to retreat in the downward direction, the rotating shaft 21 loses its center and trembles, generating noise and a load on the drive motor 3.

Therefore, in order to support the rotating shaft 21 so that it can rotate stably without being pushed further downward, arc-shaped seating grooves 24 and 42 are provided on the housing member 4' located at the lower end of the rotating shaft 21. Each is formed, and ball bearings 5 are placed in the seating grooves 24 and 42 to prevent slipping and ensure smooth rotation when the repulsive force that acts during the transfer of organic liquid sludge is applied to the lower end of the rotating shaft 21.

Therefore, in the present invention of the above embodiment, as shown in FIGS. 1 and 3, the main body 1 has an inlet pipe 11 interconnected with the outlet 61 of the stirring device 6 that performs the preceding process so that the organic liquid sludge is introduced. ) and a transfer pipe (1b) having a discharge pipe (12) that is interconnected with the storage box (71) of the solid-liquid separation device (7) that performs the next process after being transferred to a predetermined height. It has a very simple and compact structure, allowing organic liquid sludge to flow in and be transferred smoothly to the predetermined height of the storage box (71).

In addition, as shown in FIG. 3, when the drive motor 3 rotates the rotary shaft 21 at a high speed of 3,000 rpm to 5,000 rpm, pressure is generated on the inner wall of the transfer pipe 1b by the centrifugal force of the vortex phenomenon by the blade 22. Kinetic energy is transferred to the incoming organic liquid sludge, and this kinetic energy is converted into potential energy and smoothly transferred to the destination storage box 71 of the solid-liquid separation device 7 that performs the next process. .

Meanwhile, when the blade 22 mounted on the rotating shaft 21 rotates at high speed, the fibrous solids mixed in the organic liquid sludge interfere with the inner wall of the transfer pipe 1b and are attached to the rotating shaft 21 and the blade 22. It may be entangled and interfere with rotation and cause noise and malfunction, but as shown in FIGS. 3 and 4, the first propeller (22a) to the third propeller (22c) of the blade 22 mounted on the rotation shaft 21 The straight blade 23 with an inclined surface formed at the lower end flows into the lower part of the transfer pipe 1b and is included in the organic liquid sludge transferred as it is stacked in the first compression movement space 13 and the second compression movement space 14. By efficiently cutting the organic material, it is possible to prevent fibrous solids from becoming entangled, interfering with rotation, generating noise, and causing malfunctions.

And in the above process, the organic liquid sludge is transferred by the kinetic energy generated by the rotational centrifugal force of the first propeller (22a) and the second propeller (22b) to the first compression movement space (13) and the second compression movement space (14). When stacked, the centrifugal force action is weakened, but the vacuum state is maintained and the water pressure is increased, and the organic liquid sludge moves upward, forming a straight line at the lower ends of the second propeller 22b and the third propeller 22c of the blade 22. The blade 23 efficiently cuts organic substances contained in the organic liquid sludge.

In addition, the blades 23 formed at the lower ends of the first propellers 22a to 3rd propellers 22c of the blades 22 are formed in a sawtooth shape to increase the cutting area as shown in (B) of FIG. 4. This can increase the cutting efficiency of organic substances contained in organic liquid sludge and minimize the generation of noise.

In addition, a bushing member 41 made of a highly durable ceramic bearing or polyether ether ketone is installed inside the housing members 4, 4' that support and seal the upper and lower parts of the rotating shaft 21 of the impeller 2, allowing for high-speed rotation. By preventing shaking of the rotating shaft 21, the lifespan is extended and noise generation is minimized.

In addition, the ball bearings (5) disposed in the seating grooves (24, 42) formed in the housing member (4') located at the lower end and lower part of the rotation shaft (21), respectively, provide a repulsion force that acts when transporting the organic liquid sludge to the rotation shaft (21). When applied to the bottom of the machine, it prevents slipping and helps with smooth rotation, thereby prolonging the lifespan and minimizing noise generation.

What has been described above is only an example for implementing the propeller-type centrifugal pumping device necessary for moving the position of organic liquid sludge according to the present invention, and the present invention is not limited to the above-described embodiment, and is covered by the following patent claims. As claimed, it will be said that the technical spirit of the present invention exists to the extent that anyone skilled in the art can make various changes and implementations without departing from the gist of the present invention.

1: main body 11: inlet pipe
12: discharge pipe 13: first compression movement space
14: Second compression movement space
1a: support pipe 1b: transfer pipe
2: Impeller 21: Rotating shaft
22: Blade 22a: First propeller
22b: second propeller 22c: third propeller
23: Blade 24: Seating groove
3: drive motor 31; Coupling
4, 4': housing member 41: bushing member
42: Seating groove 5: Ball bearing
6: stirring device 61: outlet
7: Solid-liquid separator 71: Storage box

Claims (5)

An inflow pipe (11) interconnected with the outlet (61) of the stirring device (6) that performs the preceding process so that organic liquid sludge mixed with organic solids flows in, and a solid-liquid separation device that performs the next process after being transported to a predetermined height. A main body (1) having a cylindrical shape with a discharge pipe (12) interconnected with the storage box (71) of (7);
An impeller (2) having a rotating shaft (21) installed in the main body (1) and a blade (22) mounted on the rotating shaft (21) to transport liquid sludge;
A drive motor (3) interconnected with a coupling (31) to rotate the impeller (2); and
In the propeller-type centrifugal pumping device required to move the position of organic liquid sludge, including housing members (4, 4') supporting the upper and lower parts of the rotating shaft (21) of the impeller (2),
The main body (1) includes a support pipe (1a) with a large diameter to provide a wide space through which the organic liquid sludge flows smoothly, and the organic liquid sludge flows into the lower part inserted into the support pipe (1a), protrudes upward, and interacts with each other. It is fastened and installed with bolts and nuts to be sealed, and is placed in an upright position by being separated into a transfer pipe (1b) with a small diameter that provides space for the organic liquid sludge to change into potential energy and move due to the generation of centrifugal force and kinetic energy. ;
The blades 22 of the impeller 2 are formed in the shape of a spiral propeller, and the blades 22 are not formed continuously on the rotation shaft 21 but are connected to the first propeller 22a to the third propeller 22c. A propeller-type centrifugal pumping device required to move the position of organic liquid sludge, which is formed to be separated and spaced apart, and the spaced portion is provided with a first compression movement space (13) and a second compression movement space (14).
According to paragraph 1,
The housing members (4, 4') supporting the upper and lower parts of the rotating shaft (21) of the impeller (2) are made of durable ceramic bearings or polyether ether ketone materials inside to prevent shaking of the rotating shaft (21) rotating at high speed. A propeller-type centrifugal pumping device required to move the position of organic liquid sludge, characterized in that it is equipped with a bushing member (41).
According to paragraph 1,
The lower ends of the first propellers (22a) to third propellers (22c) of the blades (22) running perpendicular to the rotation axis (21) are formed as blades (23) with inclined surfaces and are contained in the organic liquid sludge being moved. A propeller-type centrifugal pumping device required to move the position of organic liquid sludge, characterized in that it is made to cut organic substances.
According to paragraph 3,
The blade 23 formed at the lower ends of the first propeller 22a to the third propeller 22c of the blade 22 is a propeller type necessary for moving the organic liquid sludge, characterized in that it is straight or serrated. Centrifugal pumping device.
According to paragraph 1,
Arc-shaped seating grooves 24 and 42 are formed in the housing member 4' located at the lower end of the rotating shaft 21, respectively, and ball bearings 5 are placed in the seating grooves 24 and 42 to maintain the organic liquid phase. A propeller-type centrifugal pumping device required to move the position of organic liquid sludge, characterized in that it prevents slipping and ensures smooth rotation when the repulsive force acting during the transfer of sludge is applied to the bottom of the rotating shaft (21).