JPH0686242B2 - Conveying method of soft mud on down slope - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention uses a pipe conveyor to convey a soft mud (hereinafter referred to as a slurry) containing a considerable amount of water along a downward slope. Regarding the method.

(Prior Art) Conventionally, in order to convey a large amount of slurry on a downward slope, a pipe conveyor is fixedly installed in the conveying section for conveyance.

In such a case, when the transport distance is short and the gradient is steep, the slurry flows down by its own weight.

(Problems to be Solved by the Invention) However, in the above-described transfer method, when the transfer distance is long and the slope is gentle, the flow rate of the slurry becomes slow, and the solid content contained in the slurry enters the pipe. The pipe gradually clogs and the pipe becomes clogged.

Therefore, a pump must be used to pump the slurry.

However, the longer the transport distance and the gentler the gradient, the more cooperative pumps are required, and the more severe the pipe is worn due to friction with the slurry.

(Means for Solving the Problems) The present invention is such that most of an endless conveyor belt is rolled into a pipe shape, and flattened portions at the front and rear ends thereof are
A pipe conveyor that circulates around both front and rear rollers is installed in the descending slope conveyance section. The pipe-shaped rounded portion of the belt is caused to flow down by its own weight, and when it is discharged from the expanded portion of the front end of the path belt, the conveyor belt is circulated and run at a speed lower than the flow speed of the soft mud matter due to its own weight, In addition, the above-mentioned problems are solved by removing the deposits adhering to the forward path belt by an appropriate means at the front end development portion of the conveyor belt.

(Working) As with the conventional pipe transport, the slurry flows down in the pipe-shaped outward belt due to its own weight, and the deposits adhering to the outward belt traveling at a lower speed than the slurry are Due to the speed difference in the middle of, and further at the front end, it is removed by an appropriate means.

Therefore, there is no possibility that the slurry adheres to and accumulates on the conveyor belt and clogs the conveyor path.

Further, the conveyor belt is not worn, a pressure pump is not necessary, and the power to be used may be a small output.

(Example) FIG. 1 schematically shows a pipe conveyor used for carrying out the present invention. An endless belt-shaped conveyor belt (1) has flat plate-shaped portions at front and rear ends, respectively. A front roller (2) on the right side of the figure and a rear roller (3) on the left side of the figure are wound around and inclined toward the lower front, and are driven at a low speed in the arrow direction by a drive device (not shown). Circulate in.

A hopper (4) is installed above the rear part of the conveyor belt (1), and a load receiving hopper (5) surrounding the front roller (2) is also installed in the front part.

Near both rollers (2) (3), both rollers (2)
The first rounding frame (6) and the second rounding frame (7) are arranged in order from the one closer to (3), and a large number of shape retaining frames (8) are arranged between both second rounding frames (7). It is set up.

As shown in FIG. 3, each shape-retaining frame (8) is divided into upper and lower chambers, and a plurality of shape-retaining rollers (9) are annularly arranged in each chamber.

The first and second rounding frames (6) and (7) are divided into upper and lower chambers, like the shape-retaining frame (8), and the upper chamber of the first rounding frame (6) is shown in FIG. Horizontal rounding rollers (10)
And a pair of left and right rounding rollers (10) inclined outward and upward from both ends thereof, and in the upper chamber of the second rounding frame (7), as shown in FIG. (Ten)
And a pair of left and right rounding rollers (1
0), but each is pivotal.

The lower chambers of both round frames (6) and (7) are vertically symmetrical with respect to the upper chambers, and are not shown.

As shown in FIG. 2, a scraping plate (11) whose front end abuts the inner surface of the conveyor belt (1) at a substantially right angle over the entire width below the front roller (2) in the load receiving hopper (5).
Is installed.

A fountain pipe (12) is installed just below the front end of the return belt (1b) and faces upward so as to spray cleaning water over the entire width of the inner surface of the return belt (1b).

As shown in FIG. 4, the path belt (1a) is a flat plate-shaped portion that travels forward from the rear roller (3) from below and passes through the first rounding frame (6). While rolling, it is rolled into a gutter shape by a rounding roller (10).

In the flat plate-shaped portion at the rear end of the outward belt (1a),
The slurry (13) is dropped onto the forward path belt (1a) from a hopper (4) provided above the rear roller (3).

While the outbound belt (1a) passes through the second rounding frame (7) and enters the upper chamber of the shape retaining frame (8), the outbound belt (1a) moves through the rounding roller (10) and the shape retaining roller (9). ), It is rolled into a pipe shape, wraps the slurry (13), and advances in each shape-retaining frame (8).

The slurry (13) flows down in the outward belt (1a) by its own weight and is discharged from the front end of the outward belt (1a) into the load receiving hopper (5).

The outward belt (1a) that has escaped from the shape retaining frame (8) at the upper end is unrolled while passing through the upper second and first rounding frames (7) and (6), and the front roller (2) is pushed from above. Most of the precipitate (14) attached to the outward belt (1a) is forcibly removed by the scraping plate (11) at the time of forwarding.

The slightly remaining precipitate (14) is completely washed off by the cleaning water sprayed from the fountain pipe (12).

The above is the case of a pipe conveyor in which one end on the inner surface and the other edge on the outer surface of the conveyor belt (1) are overlapped and rolled into a pipe shape. As shown in FIG. 5, the conveyor belt (51) is
The present invention can be applied in the same manner as described above even when both ends of the inner surface of the above are polymerized to be rolled into a pipe shape.

(Advantages of the Invention) (a) The slurry flows down by its own weight in the outward belt that is rolled into a pipe shape, so that a pressure pump is not necessary and the conveyor belt is not worn.

(B) Since the conveyor belt travels at a speed lower than the natural falling speed of the slurry, the slurry is less likely to adhere to the conveyor belt.

(C) In the unlikely event that the deposit attached to the outward belt is removed by an appropriate means at the end of the outward belt, there is no risk of accumulating on the conveyor belt and clogging the conveyor path.

(D) Since the conveyor belt may be circulated at a low speed, a small output power is sufficient.

[Brief description of drawings]

FIG. 1 is a front view of a pipe conveyor used for carrying out the present invention, FIG. 2 is an enlarged front view of a partial cutout in the vicinity of the load receiving hopper in FIG. 1, FIG. 3, and AA in FIG. Fig. 4 is an enlarged cross-sectional view taken along the line, Fig. 4 is an enlarged plan view of the vicinity of the lower portion of the slurry thrown in Fig. 1, and Fig. 5 is a vertical cross-sectional view showing another example of the conveyor belt applicable to the present invention. (1) …… Conveyor belt, (1a) …… Forward belt (1b) …… Return belt, (2) …… Front roller (3) …… Rear roller, (4) …… Hopper (5) …… Receiving hopper, (6) …… First round frame (7) …… Second round frame, (8) …… Shape frame (9) …… Shape roller, (10) …… Roller roller (11)… … Scraping plate, (12) …… Fountain pipe (13) …… Slurry, (14) …… Sediment (51) …… Conveyor belt

Claims (1)

[Claims] 1. A large part of an endless conveyor belt is rolled into a pipe shape, and flattened portions at the front and rear ends thereof are
A pipe conveyor that circulates around both front and rear rollers is installed in the descending slope conveyance section, and the soft mud is thrown into the developed part at the rear end of the outward belt, and the soft mud is conveyed. The pipe-shaped rounded portion of the belt is caused to flow down by its own weight, and when it is discharged from the developed portion of the front end of the path belt, the conveyor belt is circulated and run at a speed lower than the flow speed of the soft mud matter due to its own weight, In addition, in the front end development portion of the conveyor belt, the deposit attached on the outward belt is removed by an appropriate means, and the method of conveying a soft mud material in a downward slope.