JPS6081282A - Granule charging device - Google Patents

Abstract

PURPOSE:To markedly enhance charging performance and reliability of granules, by controlling, by means of an on-off mechanism, the flow thereof through the channel formed between stationary chute and hopper to eliminate gravity-drop zone for said granules in the above channel. CONSTITUTION:On the upper part of the guide inclined surface 11a of stationary chute 12, is provided in an extended manner, arc-like guide surface 11b against the rotating locus of the front and of on-off gate 1a equipped on the bucket 1 side, whereas moving chute 19 is provided which is capable of on-off operation between said surface 11a and the guide inclined surface 7c in the lower half part of the hopper 7 equipped in an extended manner with freedom to rolling at the bottom end of said surface 11a. Said chute 19 is equipped with driving mechanism 20 by which the chute 19 is operated rotatably, the channel between the guide inclined surface 7c and the surface 11a being opened, the resulting granular flow level is thus controlled to an optimum desired value.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is applicable to sintering equipment, blast furnace equipment, dry coke extinguishing equipment, etc., in which various types of granules that are easily pulverized during transportation, such as sintered iron ore and coke, are used.

This invention relates to a granular material charging device for charging materials into processing furnaces, storage tanks, and the like.

To explain a conventional example of a charging device for charging red-hot coke into a fire extinguishing furnace in dry coke fire extinguishing equipment, as shown in Fig. 1, a hopper (7) having an upper opening (7a) and a lower discharge port (7b) is used. Nomicerato (1)' installed on the fire extinguishing furnace (3) and equipped with an opening/closing game (C)Ha) at the bottom
r, transported via a hanging device (9) by a crane (not shown) or the like and placed in the upper opening (7a), and opening the opening/closing gate (ltz) (1cL) in the upper opening (7a);
The granules in the packet (1), that is, the red hot coke (α),
The structure is such that the material is charged into the hopper (7), and from the same hopper (7) through the lower discharge port (7h), it is charged onto the grate (5) in the fire extinguishing furnace (3). While the hopper ξ is operated continuously, the red-hot coke (α) introduced from the packet (1) is intermittently introduced. It is now possible to do so.

Therefore, in the conventional charging device, depending on the operating conditions, the coke level in the hopper e (7) may move up or down between the lower limit point C and the upper edge point [A] in FIG. In addition, when repairing the fire extinguishing furnace (3), or when processing various brands of coke continuously,
Reduce the coke level in the hopper (7) to at least the lower limit point f
D") or below, at least at the start of operation, the input red hot coke is
There is a drawback that the coke falls between the head (5) from A+ to the lower limit point (F) and is pulverized, resulting in a significant decrease in the yield of finished coke after cooling and a large economic loss.

Therefore, in order to eliminate the above-mentioned drawbacks, we developed and proposed a charging device as shown in Fig. 2.3. That is, the charging device shown in Fig. 2.3 has a fixed chute (8) fixedly installed in the upper center of the hopper (7), and the fixed chute (8)
8) is made into a prismatic prism with a triangular cross section with an apex at the top, and both shoulder surfaces of the fixed chute (8)'? : Guide ff+4A plane (8α) (with an inclination angle (angle with respect to the horizontal plane) slightly larger than the angle of repose of granular materials, such as red hot coke (α))
8α) so that the entire amount of granules (α) to be treated, that is, red-hot coke, flows slowly down along the guide material side surfaces (8α) (8α), and along the guide material side surface. The guiding inclined wall surfaces (7C) (7d) also provide a resting place for the granular materials so that the flowing down particulate matter fal further flows slowly down along the guiding inclined wall surfaces (7C) (7d) provided in the lower half of the hopper. It has a structure that is slightly larger than the corner and is installed diagonally (relative to the horizontal plane).

However, in the previously developed charging device, as shown in FIG.
al is mainly from the upper edge point (N to the upper end (B) of the guiding material side surface (8α) of the fixed chute (8), the lower end (C1) of the guiding material side surface (8α), the guiding inclined wall surface (7d ) of the upper point) and the same point C) (lower limit point F), and are discharged from the lower discharge port (7h), and in the said path, the particulate matter 1a) has a head of F I + F 2 At this point, it becomes a gravity falling motion, and with a head of 182, it becomes a shifting motion.

In the rolling motion, no particular impact is applied to the granules (a), and the effect of preventing pulverization can be obtained; however, in the gravitational falling motion, an impact is applied to the granules (a), making them easier to pulverize. Although it is possible to reduce the proportion of the gravity fall area (Fl + F2) by selecting the mounting height of the fixed chute (8) and the guide charge side (8α) (8α) in the total head of the entire route, it is not possible due to the structure. There is a limit, and a flow path with a constant cross-sectional area is defined between the fixed chute (8) and the hopper (7), and the area between the upper opening (7a) and the lower discharge port (7b) of the hopper (7) is always Since the flow path is open, it is impossible to avoid powdering due to the gravity fall of the granular material (a) when the granular material (a) starts to be introduced into the bucket)-(1). If the start is delayed, the hopper (
7) There are drawbacks such as the possibility that the level of the particulate matter falls below the lower limit point (Fl), making continuous charging of the particulate matter impossible.

The present invention was developed in view of the above-mentioned circumstances, and includes a hopper having an upper opening and a lower discharge port and a slanted wall surface for guiding granular material in the lower half, and In a granular material charging device comprising a fixed chute fixed at the center of the upper part and having a guide side surface for the granular material, and a packet having an opening/closing gate opened in the upper opening, An arcuate guide surface is provided on the upper part of the opening/closing gate, and is rotatably provided on the lower end edge of the guide material side surface, and is rotatably provided between the guide surface and the guide inclined wall surface of the hopper. The invention is characterized in that it is provided with a movable chute that opens and closes the movable chute, and is also provided with a drive mechanism for the movable chute.

By providing an opening/closing mechanism and adjusting the flow cross-sectional area of the flow path for the particulate matter formed between the fixed chute and the hopper, the above-mentioned drawbacks can be solved by substantially eliminating the gravity fall area of the particulate matter in the flow path. The object of the present invention is to provide a granular material charging device that eliminates the problem.

The present invention has the above-mentioned configuration, and an arcuate guide surface is provided extending on the upper part of the guide material side surface of the fixed chute, and is provided opposite to the rotation locus of the tip edge of the opening/closing gate provided on the packet side. A movable chute is rotatably extended to the lower edge of the side surface and opens and closes between the guide slope wall surface of the lower half of the hole and the movable chute, and a drive mechanism for the movable chute is provided. By rotating the chute, it is possible to open the flow path between the hopper and the guide inclined wall surface, and adjust the flow cross-sectional area, that is, the flow rate, to a desired value that is optimal for the granular material, and the granular material introduced from the packet can be , the arcuate guide surface and guide charge side of the fixed chute.

It flows down at a predetermined slow speed by the movable chute and the guide inclined wall surface in the lower half of the hopper, and only a transfer movement with almost no impact is applied over the entire head.

Through the above adjustment, the entire amount can be smoothly and continuously discharged from the lower discharge port of the hopper at the desired flow rate and charged into the processing equipment, thereby significantly improving charging performance and reliability.

Furthermore, in the present invention, the movable chute extending from the lower edge of the guide material side of the fixed chute is driven (1(
By rotating the structure, the cross-sectional area of flow between the tip of the moving chute and the hopper's guiding inclined wall is appropriately adjusted and restricted, so that granules are retained and retained in the upper half of the hopper. Even if the start of loading of granules by the packet is delayed, the granules at the start of the input will be placed only in the upper half of the hopper, or will be slowly deposited onto the granules held in it. This effectively prevents the pulverization of granular materials, ensures the continuity of granular material discharge from the lower discharge port of the hopper, that is, the charging of granular materials, and ensures smooth processing of granular materials, resulting in improved product yield. Improved.

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

4 and 5 show a first embodiment of the present invention, which is a charging device for continuously charging red hot coke (α) into a processing furnace (3). Inside (3) is the grate (5)
(7) is a hopper with an upper opening (7α) and a lower discharge port (7h) placed above the fire extinguishing furnace (3), (1) is a hopper that is suspended by a crane (not shown), etc. Ingredients (
9), the red-hot coke, i.e., granular material (
a) is placed in the upper opening (7a) of the hopper (7), and the opening/closing gate (1α) (la) provided at the bottom is rotated into the upper opening (7α), that is, downward in the figure, to open the hopper (7) and release the granules. The hopper is a packet for putting material fa) into the hopper 2, which has a transverse rectangular shape as shown in FIG. Slanted guiding walls (7C) (7cL) are provided which are slightly larger than the corners (α3) (α3') (with respect to the horizontal plane) and are installed opposite to each other. The brackets (1b) (1, 6) are fixed on the outside and are placed on the base α0) which is erected on the upper side of the hopper (1b). 7) upper opening (7a
), the opening/closing gates (1α) (1α) are properly arranged, and the opening/closing gates (1α) (1α)
A power drive mechanism (not shown), such as an appropriate hydraulic cylinder, is attached to open and close the valves at the same time.

Furthermore, in the first example 11i+iii, a fixed chute 0'2) formed in the shape of a prismatic column with a roughly triangular cross section is fixed by an appropriate mechanism at the center of the upper part of the hopper (7). and the fixed chute (1,
2) is a plan in which the apex of the triangular cross section is located on the upper side, and both sides are inclined at an inclination angle (αz) (angle with respect to the horizontal plane) that is slightly larger than the angle of repose of the granular material (a) to be treated. It is formed on the diagonal side (11a) (11α), and
At the top of the guide side (IC) (11α), there is an arcuate guide surface (IIA) (I
Ih) is extended, and the arcuate guide surface (IIh) (LL
6) has an overall inclination angle slightly larger than the above-mentioned inclination angle (α), and is configured to protrude upward toward the side between the upper edge points of the hopper (7).

Further, the guiding material side surface (11) of the fixed shoe (12)
At the lower end of α) (11α), a movable shoe H'1) (19) is rotatably extended by a shaft (13) α3),
When the movable chute (L9) is disposed in an extended manner, that is, at an inclination angle (α2) with respect to the guide material side surface (11α), the tip edge of the movable chute a9) is aligned with the guiding inclined wall surface (7C) or (7d) of the hopper (7). When the channel of the core is closed near the top of the channel and the moving chute width is rotated downward in the figure, the channel is gradually expanded and the opening of the cross-sectional area of the channel is It is structured so that it can be adjusted.

Furthermore, the moving chute θ! The shaft (13+(13)) fixed to the base side of 'l1 (19) is connected to the hopper (
Bearings (1) protrude from both end walls (7C) (7C) of (7).
4) is rotatably supported.

In addition, a lever (IG) is provided with a second protrusion, and a rod end of a hydraulic cylinder (t5) disposed on a support stand (15cL) outside the end wall (7C) is connected to the lever (IC). ) is connected to the upper end of the lever (16).
Connect the lower end of lever 0 and the upper end of lever 0 with lever αη,
The hydraulic cylinder (15) is configured as a drive mechanism (2Ql) marked with a moving chute αOa by means of a lever αboard ηαSK, and the driving mechanism (20) moves a moving chute α9.
) (19) are moved at the same time, and as shown in FIG.
) becomes an extended inclination angle (C2), and the guide charge side (1
1α) The lower edge of (lia) and the hopper (force guiding inclined wall surface (
7C) or (7d) from the solid line position where the flow path is closed, the movable chute is rotated downward to the position where the flow path is opened, that is, the flow cross-sectional area of the flow path is adjusted. Furthermore, as shown by the dotted line in the figure, the flow path is configured to be fully open, and as described above, the movable chute housing 9)
When C9) moves to the solid line position and closes the flow path, the hopper (
The hopper (7) and the fixed chute (12
) and the moving shoe (IQ) (19), that is, the size of the upper chamber (a) is ensured.

The first embodiment of the present invention shown in FIG. Move the cod chute α9) in advance to the position indicated by the solid line in Figure 4, close the flow path in the circulating section, and insert the opening/closing gate (1α) into the upper opening (7α) of the hopper (7), that is, toward the bottom in the figure. When rotated at a slow speed, the particulate matter fa) in the packet (1) is removed from the opening/closing game) (C) (1α) from above by the fixed chute 02.
The particulate matter (α) moves to the arcuate guide surface (Ilb) (11b), passes through the guide side (11α), and reaches the top of the moving shoe (HH), and the granules (α) in between are transferred without any particular impact. At the same time, the granules are guided at a slow speed on an inclined surface slightly larger than the angle of repose of the granules, resulting in a rolling motion in which they flow down, resulting in a flow that effectively prevents the granules (α) from becoming powder.

Next, the packet (1) is placed in the upper chamber (a) of the hopper (7).
All or part of the granular material (a) in the container is charged and stored,
After confirming that the amount held has reached a certain amount, the drive mechanism (20
), the movable chute holder α9 is rotated with a gentle screw from the position shown by the solid line in FIG. The granules (α) are directly guided by the guide inclined wall surface C70) C7d) in the lower half of the hopper (7) and flow down.
It is flowed down with a slow and smooth transfer movement to the lower discharge port (7
From b), it is charged into a processing device, that is, a fire extinguishing furnace (3), and pulverization is prevented without any particular impact being applied.

Further, the temporary storage, that is, the amount of retention of the particulate matter (a) in the upper chamber (a) is the particulate matter (a) caused by the packet (1).
Within the input interval (time) of a), the amount of retention in the upper chamber (a) is set to be almost all distributed to the lower part,
Further, the flow rate can be controlled by once adjusting the movable chute (19) (19), and furthermore, if the start of the next charge is delayed, the flow rate can be restricted by adjusting the opening degree, Particulate matter from the lower V outlet (7b)
α) can be charged smoothly and continuously, and granular materials (
α) In other words, the object to be treated that is easily powdered, such as red-hot coke,
It can be smoothly and continuously charged with almost no pulverization, the charging performance and reliability are significantly improved, the product yield is greatly improved, and large economic benefits are obtained.

The operation of the opening/closing gate and the movable chute can be performed smoothly by setting the time using an appropriate timer, a mechanism for detecting particulate matter in the hopper, a control mechanism using a computer, etc., and the operation of the gate,
The rotating speed, timing, etc. of the chute are adjusted depending on the powdering characteristics, flow characteristics, etc. of the granular material.

Next, a second embodiment of the present invention is shown in FIGS. 6 and 7, and its features compared to the first embodiment are explained by forming the upper half of the hopper vertically. ’), and a fixed shoe with the same structure is placed above the fixed chute (12) (2
2) and the side wall C7f of the hopper (7')
> The base side of the shaft (23) (29) (7!9) provided in the upper part of C71) (first moving shoot) (23+) is fixed, and the tip side of the first moving shoot blunt is attached to the first moving shoot. In contact with the lower edge of the guiding material side surface (21α) (21α) of the fixed chute, the angle of inclination (β) is slightly smaller than the angle of repose of the granules, so that the opening degree of the channel in the core can be adjusted and opened/closed. And the lower fixed chute α has an arcuate guide surface (11b) (11
h) with an appropriate clearance, and the shaft (231 (23) is rotatably supported by a bearing C24) ('M).
The distal end side of the movable shoe) (29) C70) can be rotated, and the lever 06) (c) and support stand (25a) are connected to the base side of the shaft (c) (to). The first movement lever (29) is moved by a hydraulic cylinder (c) disposed above and connecting the rod end to the upper end of the lever (2G), and a lever f27) connecting the lower end of the lever (26) and the upper end of the lever (2G). (It has a configuration in which two drive mechanisms (30) are attached.

Therefore, in the second embodiment shown in FIG. 6.7, as in the first embodiment, granules ( a) After confirming that the entire amount or a portion of the rice has been input and stored and a certain amount of condensation has been maintained, the drive mechanism (30) moves the first moving shoe (f2s)+29) at a predetermined slow speed. Rotate downward to remove particles (4) in the upper chamber (A').
is transferred to the intermediate chamber (b), and then the second movable chute α9) (19) is rotated downward by the drive mechanism (20) in the same manner as in the first embodiment,
By appropriately adjusting the opening of the flow channel in the core,
Granules fa) For example, a sloped wall surface that guides red-hot coke (7C)
(7d), a suitable amount can be continuously discharged from the lower discharge port (7b), ie, charged into, for example, a fire extinguishing furnace (3).

Therefore, in the second embodiment as well, the first greeting
(29) has the same effect as the moving shot scream of the first embodiment, and the particulate matter (α) has the same effect as the moving shot scream of the first embodiment. ! (7')
Only the transfer movement flows down between the upper opening (7α') and the lower discharge port (7b), which has the same powdering prevention effect as in the first embodiment, and the particulate matter (cL) flows into the upper chamber (i. In addition to the granules (α), they are also stored or retained in the intermediate chamber (b), greatly increasing the amount held in the bucket) (11). It has the feature of increasing the discharge from the outlet (also 7), that is, the charging amount, and can be effectively used when the total charging head (H) is large.

In addition, in the first and second embodiments, a configuration was explained in which a pair of opening/closing gates were provided at the bottom of the packet to form a double-opening structure, but the present invention can also be applied to a single-opening gate provided with one opening/closing gate. In this case, the guide material side surface and the arcuate guide surface are provided on only one side of the fixed chute, and the movable chute is provided only on the lower edge of the guide material side surface on that one side. Furthermore, as described above, according to the present invention,
The particulate matter flows down only due to the transfer movement, and there is almost no impact (
As a result, internal damage and wear are significantly reduced, and maintenance and management costs can be significantly reduced.

Although the present invention has been described above with reference to embodiments, the present invention is, of course, not limited to such embodiments, and can be modified in various ways without departing from the spirit of the present invention. .

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional view showing an example of a conventional granular material charging device;
Fig. 2 is a longitudinal cross-sectional view showing the granule charging device developed earlier, Fig. 3 is a cross-sectional view of the l-1 section in Fig. 2, and Fig. 4 is a longitudinal cross-sectional view showing the first embodiment of the present invention. Figure 5 is V- of Figure 4.
6 is a longitudinal sectional view showing the second embodiment of the present invention, and FIG. 7 is a sectional view of the section 1--2 in FIG. 6. 1: Packet 1a: Opening/closing gate, 7, 7': Hopper 7a, 7a': Upper opening 75 Lower discharge lower C17d
: Guide slope wall surface 11α, 21α: Guide fee side surface 11j,
21b: Arc-shaped guide surface 12.22: Fixed chute 19
．． 29: s motion shoot 20. 30: Drive mechanism sub-agents Patent attorneys 3 persons outside of Kaimoto important literature

Claims (1)

[Claims] a hopper having an upper opening and a lower discharge port and a granular material guiding side wall surface in the lower half; a fixed chute fixedly installed in the upper center of the hopper and having a granular material guiding material side surface; and the above-mentioned upper part. In a granular material charging device comprising a packet equipped with an opening/closing gate that opens into an opening, an arcuate guide surface is provided on the upper side of the guide material side of the fixed chute and is arranged opposite to the rotation locus of the tip edge of the opening/closing gate. A movable chute extending rotatably from the lower end edge of the guide material side surface to open and close between the guiding inclined wall surface of the hopper and a drive mechanism for the movable chute is provided. Granular material charging equipment based on