JPH09156764A - Gravellike matter feeding device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To surely prevent the blocking of a gravellike matter to feed it by providing a blocking preventing plate in such a manner that its flat upper surface is situated in the height of the bottom part of a throat part in order to receive the gravellike matter fallen into a water injection pump body. SOLUTION: High-speed driving water is injected to the right within a water injection pump body 1 from the tip of a driving water nozzle 10 through a driving water pipe system 5 by a pump of high horsepower for supplying high- pressure driving water. When a gravellike matter 9 accumulated within an accumulating hopper 4 is fallen into the water injection pump body 1 from the lower end part of a conical part 4c, it is carried to a transport pipe from a throttle part 15 through a throat part 2 and an extended part 25 by the jet water flow injected from the driving water nozzle 10, and run by the water running at high speed. Since a blocking preventing plate 3 is provided in the lower part within the water injection pump body 10, and the gravellike matter 9 on the blocking preventing plate 3 is directly exposed to the jet flow blown out from the driving water nozzle 10, the gravellike matter is quickly carried by the injected jet flow.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention accumulates clinker ash, gravel, crushed stone, gravel, and other gravel-like substances discharged from a boiler in a thermal power plant in an accumulation hopper and drops the accumulated hopper. The present invention relates to a gravel-like object delivery device that jets a jet water stream from a drive water nozzle of a water jet pump and sends it out.

[0002]

2. Description of the Related Art FIG. 2 shows a conventional gravel-like material delivering apparatus. The lower part of the large cylindrical accumulating hopper 4 is narrowed into a conical part 4c, and the water injection pump body 1 is provided below the lower end part of the conical part 4c. The water jet pump main body 1 is connected to the throat portion 2 via a throttle portion 15 which has a cylindrical shape with a horizontal axis and is conically narrowed to the right. The right side of the throat portion 2 in the drawing is connected to the transportation pipe via a not-shown conical widening portion. Water injection pump body 1
The drive water nozzle 10 has a shape that rushes in from the left side of the drawing.
Is provided, and a high-pressure drive water pump (not shown) is provided and connected on the left side of the drive water pipe system 5 connected to the drive water nozzle 10. Gravel-like substances such as clinker ash that are discharged from a boiler or the like of a thermal power plant and crushed by a crusher are accumulated in the accumulation hopper 4.

In FIG. 2, the driving water nozzle 10 is driven by a high-pressure driving water pump (not shown) connected to the left side of the drawing.
The driving water is spouted from the tip of the to the right inside the water jet pump body 1 at high speed. When the gravel-like substances such as clinker ash accumulated in the accumulating hopper 4 fall into the water injection pump body 1 from the lower end of the conical portion 4c of the accumulating hopper 4, the driving water nozzle 1
The jet water flow ejected from 0 is taken out from the throttle portion 15 to the transportation pipe through the throat portion 2 and the unillustrated widening portion, and is transported to the destination together with water in the transportation pipe. In addition,
Water ejected from the driving water nozzle 10 is the water injection pump body 1
Since the flow velocity is extremely high in the throat portion 2 by being squeezed through the throttle portion 15 from this, the action of taking out the gravel-like substances is enhanced by this high-speed water flow.

[0004]

The conventional gravel-like object feeding device is as described above, but in FIG. 2, the gravel-like objects to be dropped are mutually in the lower part in the conical part 4c of the stacking hopper 4. They may support each other to form an arch bridge, forming a so-called bridge and not falling. On the other hand, conventionally, the water is supplied and flowed together with the gravel-like material in the accumulating hopper 4, or the accumulating hopper 4 is hit from the outside with power or manpower to give an impact to break the bridge and prevent the blockage. Was there. However, the effect of blockage prevention cannot be expected so much only by supplying water into the accumulating hopper 4, and hitting the accumulating hopper 4 to give an impact may impact other parts as well, which may cause an adverse effect. There was such a problem.

The present invention has been made in order to solve the above-mentioned problems, and it is possible to surely prevent the gravel-like object from being blocked and to send it out without adversely affecting other places by giving an impact or the like. The object is to obtain a product delivery device.

[0006]

According to the present invention, the gravel-like object delivery device has a flat upper surface at the height of the bottom of the throat so as to receive the gravel-like object falling into the water injection pump body. A blockage prevention plate is provided. Further, the gravel-like object delivery device according to the present invention is provided with a bypass pipe system branched from the drive water pipe system of the water injection pump, and is connected to the bypass pipe system so as to be eccentric toward the inside at the lower end portion of the accumulation hopper. A plurality of agitation nozzles for injecting water in the direction are provided. Further, the gravel-like object delivery device according to the present invention is provided with a blocking prevention plate so that the flat upper surface is at the height of the bottom of the throat part so as to receive the gravel-like object falling into the water injection pump body, A bypass pipe system is provided branching from the drive water pipe system of the water injection pump, and a plurality of agitation nozzles that are connected to the bypass pipe system and inject eccentrically water toward the inside at the lower end of the integrated hopper. It is provided.

The blockage prevention plate provided so that the flat upper surface is at the level of the bottom of the throat in the water injection pump body of the gravel-like object delivering apparatus according to the present invention is designed to prevent gravel-like objects falling from the accumulating hopper. Since it is received by the blockage prevention plate and does not fall below the throat part, it is blown off on the horizontal surface of the blockage prevention plate by the jet water jet ejected from the drive water nozzle and is smoothly discharged as it is through the throat part.
Therefore, it can be smoothly dropped from the stacking hopper. Further, a plurality of stirring nozzles connected to a bypass pipe system from the drive water pipe system of the water injection pump to inject water in an eccentric direction toward the inside at the lower end portion of the accumulation hopper are When a bridge of gravel is generated in the lower part of the, it is broken to eliminate the obstacle of falling gravel.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows an embodiment of a gravel-like material delivery apparatus according to the present invention, in which (A) is a side sectional view,
(B) is a horizontal cross-sectional view of the inside of the water injection pump body, (C) is a side cross-sectional view near the stirring nozzle, and (D) is a plan cross-sectional view of the lower end of the hopper. In FIG. 1, 1 is a water injection pump main body, 2 is a throat portion, 3 is a blocking prevention plate, 4 is an integrated hopper, 5 is a drive water pipe system, 6 is a bypass pipe system, 7 is a solenoid valve,
Reference numeral 8 is a stirring nozzle, 9 is a gravel-like material, and 10 is a driving water nozzle.

As shown in FIG. 1A, gravel-like substances 9 such as clinker ash discharged from a boiler of a thermal power plant and crushed by a crusher are accumulated in the accumulation hopper 4. The accumulation hopper 4 is a large vertical cylindrical container having a conical portion 4c at its lower portion, and the water injection pump main body 1 is connected to the narrowed lower end portion thereof. The water injection pump main body 1 has a cylindrical shape having an axial centerline in the left-right direction in the figure, and the right portion serves as a conical throttle portion 15, and a diverging portion 25 that spreads in a cone shape from the throat portion 2 having a narrowed cross-sectional area. A transport pipe (not shown) is formed on the right side of the expanded portion 25. On the left side of the water injection pump body 1, a drive water nozzle 10 connected to a drive water pipe system 5 connected to a large horsepower pump that generates high-pressure drive water (not shown) plunges into the water injection pump body 1. Is provided.

As shown in FIGS. 1 (A) and 1 (B), a blockage prevention plate 3 is provided in the water injection pump body 1 so as to receive the gravel-like material 9 falling from the accumulation hopper 4.
The upper surface of the blocking prevention plate 3 is formed in a horizontal plane having a height aligned with the position of the bottom surface of the throat portion 2. Driving water nozzle 1
0 is above the upper surface of the blocking prevention plate 3.

As shown in FIGS. 1A, 1C and 1D, a bypass pipe system 6 is provided so as to branch from the drive water pipe system 5, and a solenoid valve 7 is provided in the middle of the bypass pipe system 6. Has been. A circulating pipe 65 is provided around the connection between the lower end portion of the hopper 41, that is, the lower end portion of the conical portion 4c of the integrated hopper 4 and the water injection pump body 1, and the bypass pipe system 6 serves as the circulating pipe 65.
It is connected to the. The lower part of the hopper 4 is connected to the inside of the circulating pipe 65 via an adjusting part 68 that facilitates connection and absorbs vibration.
A plurality of stirring nozzles 8 for ejecting jet water flow in an eccentric direction are connected to the inside of 1. As shown in FIG. 1 (C), it is desirable that the stirring nozzle 8 be formed so as to eject in an eccentric direction and upward.

Next, the operation of the gravel-like object feeding device shown in FIG. 1 will be described. The main body of the drive water pipe system 5, which is connected to the left side of FIG. Eject to the right in 1. The gravel-like material 9 such as clinker ash accumulated in the accumulating hopper 4 falls into the water injection pump main body 1 from the lower end of the conical portion 4c of the accumulating hopper 4, and is caused by the jet water flow ejected from the driving water nozzle 10. It is taken out from the narrowed portion 15 to the transport pipe (not shown) via the throat portion 2 and the spread portion 25, and is transported along with the water flowing at high speed in the transport pipe to be transported to the destination. The water ejected from the driving water nozzle 10 is squeezed from the water injection pump body 1 through the squeezing portion 15 so that the flow velocity becomes very high in the throat portion 2, and the water flowing at a high speed causes the gravel-like matter to be taken out. Is increased.

In FIG. 1, when the gravel-like material 9 is dropped from the accumulating hopper 4 onto the water injection pump main body 1, the gravel-like material 9 supports each other in the lower part of the conical portion 4c to form an arch bridge shape. The gravel-like material 9 may form a so-called bridge and may not fall. On the other hand, conventionally, the bridge is broken and dropped by supplying water into the stacking hopper 4 to flow it or hitting the stacking hopper 4 from the outside to give an impact. However, there is a problem in that the effect of blockage prevention cannot be expected only by supplying water into the accumulating hopper 4, and if the accumulating hopper 4 is hit, other parts may be impacted and adversely affected. It was

To solve this problem, in the gravel-like object delivery apparatus shown in FIG. 1, the blockage prevention plate 3 is provided in the lower portion of the water injection pump body 1.
The blockage prevention plate 3 receives the gravels 9 dropped from the stacking hopper 4, and the gravel blocks 9 on the blockage prevention plate 3 are directly exposed to the jet water flow ejected from the driving water nozzle 10. Therefore, the gravel-like material 9 is rapidly taken out by the jet water flow ejected from the driving water nozzle 10. Conventionally, since the gravel-like material 9 has fallen into the portion below the blockage prevention plate 3 in the water injection pump body 1, the gravel-like material 9 entering the portion below the blockage prevention plate 3 is taken out. Therefore, it is necessary to add potential energy, and it is considered that the jet water flow ejected from the driving water nozzle 10 had some energy loss. Since there is no energy loss in the gravel-like object delivery device shown in FIG. 1, the flow of gravel-like objects 9 falling from the accumulation hopper 4 into the water injection pump body 1 is smooth and continuous, and the occurrence of blockage is reduced.

Further, in FIG. 1, when the bridge of the gravel-like material 9 is generated in the lower portion of the conical portion 4c of the accumulating hopper 4, the solenoid valve 7 is opened and the high pressure water in the driving water pipe system 5 is bypassed. When high-pressure water is jetted at high speed from the stirring nozzle 8 via the system 6, the jet water flow eccentrically jetted from the stirring nozzle 8 becomes a swirl flow, stirring the gravel-like substance 9 to crush the gravel-like substance 9.
Dismantle the bridge. As shown in FIG. 1 (C), if the jetting direction of the stirring nozzle 8 is directed upward, it is particularly effective for disassembling the bridge of the gravel-like material 9. When the bridge of the gravel-like substance 9 is broken, the gravel-like substance 9 smoothly falls to the water injection pump body 1 and is delivered. It should be noted that when the gravel-like material 9 is smoothly falling, the electromagnetic valve 7 may be closed and the entire amount of driving water may be ejected from the driving water nozzle 10.

Although four agitation nozzles 8 are shown in FIG. 1D, the agitation nozzle 8 may be provided in an appropriate number of two or more. Further, the diameter, the eccentric angle, the upward angle, etc. that determine the ejection amount of the stirring nozzle 8 may be appropriately determined according to specific conditions. In addition, for example, the height position and the direction angle of each stirring nozzle 8 may be individually different.
Further, for example, a bypass pipe system 6, a solenoid valve 7 and a stirring nozzle 8 of another system may be provided so as to jet the stirring jet water flow to a position above the stirring nozzle 8 shown in FIG. 1 (A). it can. Further, the solenoid valve 7 has an advantage that it can be opened and closed rapidly, but other types of valves may of course be used.

[0017]

As described above, according to the present invention, the blockage prevention plate is provided in the water injection pump main body so that the gravel-like material does not stagnate in the lower portion of the water injection pump main body. Flow becomes smooth. Further, since the stirring nozzle is provided at the connecting portion between the integrated hopper and the water injection pump main body to stir by the eccentric jet water flow, it is possible to prevent the clogged matter from being blocked and to smoothly and smoothly perform the cobbled matter. Can be continuously sent to.

[Brief description of the drawings]

1A and 1B show an embodiment of a gravel-like material delivery apparatus according to the present invention, in which FIG. 1A is a side sectional view, FIG. 1B is a lateral sectional view inside a water injection pump body, and FIG. 2D is a side sectional view, and FIG. 3D is a plan sectional view of the lower end portion of the hopper.

2A and 2B show a conventional gravel-like object delivery device, FIG. 2A is a side sectional view, and FIG. 2B is a transverse sectional view inside a water injection pump body.

[Explanation of symbols]

1: Water injection pump main body, 15: Throttling part, 2: Throat part, 3: Blocking prevention plate, 4: Integrated hopper, 4c: Conical part, 41: Lower end part of hopper, 5: Driving water pipe system, 6: Bypass pipe System, 7: solenoid valve, 8: stirring nozzle, 9: gravel, 10: driving water nozzle.

Claims (3)

[Claims] 1. A gravel-like material delivery device for dropping gravel-like material from an accumulation hopper and delivering it by water ejected from a drive water nozzle of a water injection pump, so as to receive the gravel-like material falling into a water injection pump body. An apparatus for delivering gravel-like objects, wherein an obstruction prevention plate is provided so that the flat upper surface is at the height of the bottom of the throat. 2. A gravel-like material delivery device for dropping gravel-like material from an accumulating hopper and delivering it by water ejected from a drive water nozzle of a water injection pump, wherein a bypass pipe is branched from a drive water pipe system of the water injection pump. A gravel-like material delivery device comprising a system and a plurality of agitation nozzles which are connected to the bypass pipe system and inject water in an eccentric direction toward the inside at the lower end of the accumulation hopper. 3. A gravel-like object discharging device for dropping gravel-like objects from an accumulating hopper and delivering them by water ejected from a driving water nozzle of a water injection pump, wherein the gravel-like objects falling into a water injection pump body are received. In addition to providing a blocking prevention plate so that the flat upper surface is at the height of the bottom of the throat,
A plurality of agitation nozzles, which are branched from the drive water pipe system of the water injection pump, are provided with a bypass pipe system, and are connected to the bypass pipe system to inject water toward the inside of the lower end of the integrated hopper in an eccentric direction. An apparatus for delivering gravel-like objects, comprising: