KR101608699B1 - Preventing apparatus for clogging the slurry pump of mining - Google Patents

Abstract

The present invention relates to a clogging preventing apparatus for a slurry pump, which prevents the concentration of solid particles from exceeding a threshold, which comprises: a water supply unit for supplying water; a grinder to grind water supplied from the water supply unit and solid particles put in and generate slurry where water and solid particles are mixed; a buffer chamber with a space to receive and store the slurry from the grinder; a limiting unit on the top end of the buffer chamber to limit the density of the solid particles of the slurry flowing from the buffer chamber; a flux measuring unit on the top of the limiting unit to measure the flux flowing from the limiting unit; and a pump on the top of the flux measuring unit to let the slurry flow through the flux measuring unit and convey the slurry through a supply pipe. The present invention can prevent clogging in a slurry pump.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a slurry pump for a mining slurry pump,

The present invention relates to an apparatus for preventing an obstruction of a slurry pump, and more particularly, to an apparatus for preventing a slurry pump from being clogged by a slurry pump configured to prevent a concentration of solid particles from exceeding a threshold value (about 20% The present invention relates to an obstruction preventing device for a vehicle.

Slurry pump means a pump that transfers solid particles through water. Such a slurry pump is widely used for resource development such as mining and sand extraction.

In particular, the mine is a place for mining minerals. In general mining methods, miners or mining equipment are mined at the site by mining the mine to the site where the minerals are buried, and mined minerals are transported through the mining site. ㅇ Horizontal tunnel transport shaft : Vertical tunnel) and slope (sloping tunnel) transported out of the tunnel and subjected to the process of beneficiation and smelting.

In order to drain resources from such mines, the crushed mineral is carried in water. When the mineral is transported in the slurry state, it has advantages such as convenient transportation and no dust. However, when the concentration of the mineral, that is, the solid, is high, there is a problem that clogging occurs in the slurry pump.

If the slurry pump is clogged, the slurry pump can not be used, and the clogging can cause a catastrophic damage to the slurry pump, which may cause failure. Therefore, a device capable of preventing such occlusion is needed.

Korean Registered Patent No. 10-1183443 (Publication Date: September 17, 2012) "Connection between condensing tube and condensing period for controlling flow rate and concentration"

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a slurry pump in which the concentration of solid particles is prevented from exceeding a threshold value, And to prevent the slurry pump from clogging.

It is another object of the present invention to provide a densitometer for a slurry pump that automatically stops the operation of the pump when the concentration of the slurry exceeds a threshold value to prevent clogging of the slurry pump, Prevention device.

According to an aspect of the present invention, there is provided an apparatus for preventing clogging of a slurry pump, comprising: a water supply unit for supplying water;

A crusher for crushing the solid particles charged with the supplied water to produce a slurry in which water and solid particles are mixed;

A buffer chamber into which the slurry is charged from the pulverizer and into which a space for temporarily storing the slurry is charged;

A restriction device configured at the upper end of the buffer chamber to restrict the solid particles of the slurry from flowing into the buffer chamber so that the solid particles are kept at a certain density or less and are introduced into the buffer chamber;

A flow rate measuring device configured to measure a flow rate introduced from the restriction device on the restriction device;

And a pump disposed at an upper portion of the flow rate measuring device and transferring the slurry flowing through the flow rate measuring device through a supply pipe.

The restriction device includes:

A slurry pipe connected to the pump and configured to have a wide width of the outflow portion flowing out through the pump and having a width smaller than a width of the outflow portion through which the slurry flows from the buffer chamber;

A circulation conduit on the side surface of the slurry conduit for circulating slurry that has not passed through the slurry conduit to the buffer chamber; And

And a check valve disposed at one side of the circulation conduit to prevent the slurry from flowing from the buffer chamber through the circulation conduit.

The slurry conduit may comprise:

The shape of the outlet and the inlet may be circular, and the area of the outlet may be at least two times the area of the inlet.

Wherein the flow rate measuring device comprises:

A flow meter side part for measuring a flow rate of slurry flowing from the restriction device;

A density measuring unit for measuring a density of the slurry flowing from the restriction device; And

And a control unit for stopping the operation of the pump when it is determined that the measurement result of the density measuring unit exceeds the predetermined density.

Wherein,

The constant density may be configured to discontinue operation of the pump when the density of the solid is greater than 25 wt% relative to the weight of the slurry.

The apparatus for preventing clogging of a slurry pump according to the present invention has an effect of preventing clogging of a slurry pump by constituting a structure of a slurry pump so that the concentration of solid particles does not exceed a threshold value.

The apparatus for preventing clogging of a slurry pump according to the present invention is configured to constitute a density meter in a slurry pump to automatically stop the operation of the pump when the concentration of the slurry exceeds a threshold value, There is an effect to prevent.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram schematically showing a configuration of an apparatus for preventing an obstruction of a slurry pump according to an embodiment of the present invention; FIG.
2 is a block diagram showing a configuration of a flow rate measuring apparatus according to an embodiment of the present invention;

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

FIG. 1 is a block diagram schematically showing a configuration of an obstruction preventing device of a slurry pump according to an embodiment of the present invention, and FIG. 2 is a block diagram showing the configuration of a flow rate measuring apparatus according to an embodiment of the present invention.

1 and 2, a slurry pump 100 according to the present invention includes a water supply unit 110, a crusher 120, a buffer chamber 130, a restriction unit 140, a circulation pipe 150, And a pump 170. The slurry is supplied to a predetermined device or place through a supply pipe 180 through a pump 170. [

The water supply unit 110 supplies water to the crusher 120, and the water stored in the predetermined water tank or the water of the water supply source can be supplied. Although FIG. 1 shows the supply of water stored in a predetermined tank, water taken together with the solid material may be supplied.

The crusher 120 crushes the solid particles supplied with the water supplied from the water supply unit 110 in a state in which water is supplied to generate the slurry s. The resulting slurry (s) is ground to a size such that the size of the particles mixed with water is 1 cm to 5 cm and easily mixed with water. That is, the slurry (s) obtained by mixing the solid and water pulverized by the pulverizer (120) is produced. As mentioned above, solids can be collected minerals.

The buffer chamber 130 is formed in a chamber shape and serves to buffer the slurry formed by the crusher 120 before entering the restriction device 140. That is, the buffer chamber 130 prevents the pump 170, which sucks the slurry, from flowing directly into the restriction device 140 to buffer the buffer. The slurry s is sucked through the buffer chamber 130 and supplied to the predetermined device or place through the supply pipe 180 so that the solid content of the slurry s is prevented from increasing and the buffer chamber 130 ) Is sufficient to prevent the slurry pump 100 from being clogged.

The limiting device 140 is configured at the upper end of the buffer chamber 130 and serves to limit the flow of solid particles of the slurry s from the buffer chamber 130 to a predetermined density or less. The restriction device 130 has a structure in which the outlet part 144 connected to the pump 170 and connected to the pump 170 is configured to have a wide width and the inlet 142 of the buffer chamber to which the slurry s flows And the width of the outlet (144) is smaller than the width of the outlet (144). That is, the slurry pipeline 146 has a narrow inlet port portion 142, which is a portion connected to the pump 170 side and has a large outlet port portion 144 connected to the buffer chamber 130 side, . That is, since the inlet 142 and the outlet 144 are circular, the slurry conduit 146 can be formed in the shape of a cone without an upper portion. For example, the shape of the outlet 144 and the inlet 142 may be circular, and the area of the outlet 144 may be at least two times the area of the inlet 142.

A circulation conduit 150 is formed on the side of the slurry conduit 146. The circulation conduit 150 serves to circulate the slurry s that has not passed through the slurry conduit 146 back to the buffer chamber 130. The circulation conduit 150 circulates the slurry that has not flowed into the slurry conduit 146 back to the buffer chamber 130 to prevent a large amount of slurry from concentrating in the slurry conduit 146. The solid density of the slurry s .

A check valve 152 is formed at one side near the buffer chamber 130 in the circulation conduit 150. The check valve 152 is configured to prevent the slurry s not flowing into the slurry pipeline 146 from flowing into the restriction device 140 from the buffer chamber 130 through the circulation pipeline 150.

2, the flow rate measuring device 160 is provided on the restriction device 150 and includes a flow meter side portion 162 for measuring the flow rate of the slurry s flowing in from the restriction device 150, The control unit 166 stops the operation of the pump 170 when it is determined that the density of the solid in the slurry s exceeds a predetermined density as a result of the density measurement unit 164 and the density measurement unit 164, .

The flow meter side portion 162 measures the flow rate of the slurry flowing into the pump 170 from the restriction device 140. The flow rate information measured by the flow meter side portion 162 is transmitted to the control portion 166. [ The control unit 166 can know the amount of the slurry to be totally transferred through the transmitted flow rate information.

The density measuring section 164 measures the density of the solid contained in the slurry s with respect to the ratio of the slurry s flowing into the pump 170 from the restriction device 140. That is, the ratio of the solid at the total flow rate measured by the flow meter side portion 162 is measured. As described above, the solid may be a mineral, or it may be a collection of sand or the like taken with water.

The control unit 166 stops the operation of the pump 170 when the density of the solid in the slurry s is determined to exceed the predetermined density as a result of the inspection by the density measuring unit 164 and the slurry pump 100 is broken ≪ / RTI > For example, the above-described constant density may cause the pump 170 to stop operating if the density of the solid exceeds 25 wt%, relative to the weight of the slurry s.

The pump 170 supplies the slurry formed by crushing the solid and the water mixed in the crusher 120 to the slurry through the crusher 120, the buffer chamber 130, the restriction device 140 and the flow rate measuring device 160 And provides power to be delivered through the pipe 180. That is, the pump 170 pressurizes the slurry s and pumps it via the crusher 120, the buffer chamber 130, the restriction device 140, and the flow rate measuring device 160, and supplies the pumped slurry s To be transported to a predetermined device or place through the pipe 180. [

The slurry s introduced from the buffer chamber 130 flows into the flow rate measuring device 160 and the pump 170 without limitation when the slurry pipe 46 is formed into a cylindrical shape. Therefore, in the pump 170, the slurry s can be introduced without moderation.

However, if the upper part is configured as a truncated conical part, a part of the slurry flows into the buffer chamber 130 through the circulation line 150 and only a part of the slurry flows through the slurry pipeline 146 and the flow rate measuring device 160 and the pump 170 Through the supply pipe 180. [0050] With such a configuration, clogging of the slurry pump 100 can be prevented. Thus, preferably, the slurry pump is configured in the form of a cone with the top cut out.

Although the best mode has been shown and described in the drawings and specification, certain terminology has been used for the purpose of describing the embodiments of the invention and is not intended to be limiting or to limit the scope of the invention described in the claims. It is not. Therefore, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the scope of the present invention. Accordingly, the true scope of the present invention should be determined by the technical idea of the appended claims.

100: Slurry pump 110: Water supply part
120: Grinder 130: Buffer chamber
140: restriction device 150: circulation duct
160: Flow measuring device 170: Pump
180: Supply pipe

Claims (5)

A water supply part for supplying water;
A crusher for crushing the water supplied from the water supply unit and the charged solid particles to produce a slurry in which water and solid particles are mixed;
A buffer chamber in which a space for loading and storing the slurry from the pulverizer is formed;
A restriction device configured at the upper end of the buffer chamber to restrict the solid particles of the slurry from flowing into the buffer chamber so that the solid particles are kept at a certain density or less and are introduced into the buffer chamber;
A flow rate measuring device configured to measure a flow rate introduced from the restriction device on the restriction device;
And a pump configured to be installed at an upper portion of the flow rate measuring device to feed slurry through the flow rate measuring device and feed the slurry through a supply pipe,
Wherein the flow rate measuring device comprises:
A flow meter side part for measuring a flow rate of slurry flowing from the restriction device;
A density measuring unit for measuring a density of the slurry flowing from the restriction device; And
And a controller for stopping the operation of the pump when it is determined that the measured density of the density measuring unit exceeds a certain density.
2. The apparatus according to claim 1,
A slurry pipe connected to the pump and configured to have a wide width of the outflow portion flowing out through the pump and having a width smaller than a width of the outflow portion through which the slurry flows from the buffer chamber;
A circulation conduit on the side surface of the slurry conduit for circulating slurry that has not passed through the slurry conduit to the buffer chamber; And
And a check valve disposed at one side of the circulation conduit to prevent the slurry from flowing from the buffer chamber through the circulation conduit.
The slurry pipeline according to claim 2,
Wherein the shape of the outlet and the inlet are circular and the area of the outlet is twice or more than the area of the inlet.
delete The apparatus of claim 1,
Wherein the constant density is configured to stop the operation of the pump when the density of the solid exceeds 25 wt% with respect to the weight of the slurry.

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