CN206837567U - Ore pulp concentrator - Google Patents

Abstract

The utility model belongs to thickening equipment technical field, and in particular to ore pulp concentrator.Ore pulp concentrator, including concentrator body, annular cloth tube is provided with above the central tube of described concentrator body, annular cloth tube connects with ore pulp feed pipe, more than two cloth shots are provided with below described annular cloth tube, each described cloth shots are communicated with downwards ore pulp discharge nozzle, and the discharging opening of ore pulp discharge nozzle is inserted under central tube liquid level.The utility model changes the feeding manner that ore pulp enters central tube so that when ore pulp enters central tube, distribution is more uniform, will not cause the deposition of ore pulp so that it is more steady that concentrator turns target operating.

Description

Pulp thickener

technical field

The utility model belongs to the technical field of thickening equipment, in particular to an ore pulp thickener.

Background technique

The thickener is a solid-liquid separation device based on gravity settlement, usually a cylindrical shallow tank with a conical bottom built from concrete, wood or metal welded plates as structural materials. The ore pulp with a solid weight of 10% to 20% can be concentrated by gravity sedimentation into an underflow pulp with a solid content of 45% to 55%. ) rake, so that the thickened underflow slurry is discharged from the underflow port at the bottom of the thickener. The upper part of the thickener produces a relatively clean clarified liquid (overflow), which is discharged from the annular chute at the top.

The existing pulp thickener generally feeds the diluted pulp with a solid content of 30% into the central cylinder of the thickener at a position of 1.2m below the liquid surface, and the two ends of the distributing pipe are respectively fed along the tangential direction of the central cylinder, causing the pulp to disperse. Uneven, coarse-grained ore slurry settles and accumulates under the feed inlet, resulting in large torque fluctuations of the thickener and unstable operating torque. The rake operates under a high torque state. When the resistance exceeds the design bearing capacity of the transmission system, the large teeth are easily damaged. Rings, hubs, hydraulic motor reducer gears and other components. In terms of operation, in order to ensure that the torque value does not exceed the interlock trip stop value, it is forced to reduce the amount of ore feeding to ensure that the thickener does not trip and stop, which is also one of the reasons for low production capacity and low solid content; when the particle size of the pulp is high , the local sedimentation rate is accelerated, and the accumulation speed of coarse-grained materials is accelerated. When the accumulation reaches a certain level, the rake arm will be buried.

Utility model content

The purpose of the utility model is to provide a pulp thickener, which solves the problem that the pulp feeding method of the existing pulp thickener easily leads to uneven dispersion of the pulp, which leads to large fluctuations in the turning target torque of the thickener, unstable operating torque, and damage to the large ring gear and wheel hub. , Hydraulic motor reducer gear and other parts problems.

In order to solve the above-mentioned technical problems, the utility model adopts the following technical solutions:

The pulp thickener includes a thickener body, an annular distribution pipe is arranged above the central cylinder of the thickener body, and the annular distribution pipe is connected with the pulp feeding pipe, and more than two distribution points are arranged below the annular distribution pipe Each of the distributing points is connected downward with a slurry discharge pipe, and the discharge port of the slurry discharge pipe is inserted under the liquid surface of the central cylinder.

Change the original way of feeding the pulp along the tangential direction of the central cylinder to the way that the pulp enters the central cylinder vertically from the distribution point along the pulp discharge pipe, and set more than two distribution points so that when the pulp enters the central cylinder, the distribution is more accurate. Uniformity, and at the same time, it will not cause the sedimentation and accumulation of ore pulp, which makes the operation of the thickener target more stable.

Preferably, a flocculant nozzle is arranged in the central cylinder, and the flocculant nozzle is located above the liquid surface of the central cylinder. The flocculant is added above the liquid surface, and the pulp particles are captured synchronously, so that the flocculant and the pulp are mixed more evenly.

Preferably, the number of the flocculant nozzles corresponds to the number of the pulp discharge pipes, and is arranged directly above each pulp discharge pipe. The spray is uniform, and the synchronous capture of pulp particles is more rapid, effective and uniform.

As a preference, the annular distribution pipe is set at 700 mm above the liquid surface of the central cylinder, and the outlet of the slurry discharge pipe is inserted at 400 mm below the liquid surface of the central cylinder. The existing pulp thickener generally puts the diluted pulp with a solid content of 30% into the central cylinder of the thickener at a position of 1.2m below the liquid surface, and the annular distribution pipe is set at 700mm above the liquid surface of the central cylinder, so that the The height of the material pipe is increased by 1900 mm, which converts the kinetic energy of the primary slurry pump into the potential energy, and pushes the diluted slurry in the central cylinder to generate dynamic downward impact, which improves the mixing efficiency of the slurry and flocculant, and sets the ring cloth according to this distance Pipe and pulp discharge pipe, the pulp particles are evenly dispersed and the size is appropriate.

Preferably, the number of the distribution points is 8, and the distance between adjacent distribution points is equal. The distance between adjacent distributing points is equal to ensure that the slurry is evenly dispersed, and the 8 distributing points make the distance between adjacent distributing points just right.

As a preference, a distributor is arranged below the central cylinder, the distributor is in the shape of an umbrella with a small top and a large bottom, and there is a gap between the lower edge of the distributor and the bottom of the central cylinder. Using the static pressure head of the central cylinder and the impact force of the pulp, the pulp is forced to squeeze out from the gap between the central cylinder and the distributor, and the pulp goes to the outer circle to increase the sedimentation stroke of the pulp, that is, to increase the sedimentation time of the pulp and fully squeeze out the water. , the cone is collected by the rotating rake scraper, and the pulp exiting the thickener cone is completely the pulp of the sedimentation layer, and the obtained underflow has a high solid content.

Preferably, a sleeve rod is additionally provided in the central cylinder, the sleeve rod can be stretched and fixed by a fixing piece, and the distributor is located at the lower end of the sleeve rod. The distance between the edge of the distributor and the bottom of the central cylinder can be adjusted through the expansion and contraction of the sleeve rod, so as to control the settling stroke of the slurry, and then control the solid content of the underflow.

Preferably, the sleeve rod is connected with a rotating shaft driven by a motor, and the rotation direction of the sleeve rod is opposite to that of the rotating target of the thickener body. When the pulp is extruded from the gap between the central cylinder and the distributor, it has a certain angular velocity opposite to that of the rotating target, and the impact force further improves the dispersion of the pulp particles, making the settlement effect better.

The utility model can achieve at least one of the following beneficial effects: the utility model changes the feeding mode of the pulp into the central cylinder, so that when the pulp enters the central cylinder, the distribution is more uniform, and the sedimentation and accumulation of the pulp will not be caused, so that the thickener turns to the target to run It is more stable; the flocculant of the utility model is added above the liquid surface, and the pulp particles are captured synchronously, so that the flocculant and the pulp are mixed more uniformly, and the mixing effect is better; the utility model increases the height of the pulp inlet, and improves the the mixing efficiency; the utility model makes the pulp particles uniformly dispersed and suitable in size; the utility model increases the pulp settling stroke, that is, increases the pulp settling time, and improves the solid content of the dense concentrate pulp; the utility model can control the obtained dense concentrate pulp Solid content; the utility model further improves the dispersion of pulp particles and enhances the settlement effect by making the pulp extrude from the central cylinder with an angular velocity opposite to that of the rotating target.

Description of drawings

Fig. 1 is a schematic diagram of the structure of the central cylinder of the present invention.

Fig. 2 is a schematic diagram of the top view structure of the central cylinder of the present invention.

detailed description

In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not intended to limit the utility model.

Fig. 1 and Fig. 2 show the structure of this kind of pulp thickener, and a few examples are listed below in conjunction with the illustrations.

Example 1:

The pulp thickener includes the thickener body, and the NXZ-18 high-efficiency thickener can be selected. An annular distribution pipe 2 is arranged above the central cylinder 1 of the thickener body. The annular distribution pipe 2 communicates with the pulp feeding pipe 3. The annular Eight distribution points are arranged below the distribution pipe 2, and each of the distribution points is connected with a slurry discharge pipe 4 downward, and the discharge port of the slurry discharge pipe 4 is inserted under the liquid surface of the central cylinder 1.

Change the original way of feeding the pulp along the tangential direction of the central cylinder 1 to the way that the pulp enters the central cylinder 1 vertically from the distribution point along the pulp discharge pipe 4, and set 8 distribution points so that when the pulp enters the central cylinder, the distribution It is more uniform, and at the same time, it will not cause the sedimentation and accumulation of ore pulp, which makes the operation of the thickener target more stable.

Example 2:

The pulp thickener includes the thickener body, and the NXZ-18 high-efficiency thickener can be selected. An annular distribution pipe 2 is arranged above the central cylinder 1 of the thickener body. The annular distribution pipe 2 communicates with the pulp feeding pipe 3. The annular Eight distribution points are arranged below the distribution pipe 2, and each of the distribution points is connected with a slurry discharge pipe 4 downward, and the discharge port of the slurry discharge pipe 4 is inserted under the liquid surface of the central cylinder 1. A flocculant nozzle is arranged in the central cylinder 1, and the flocculant nozzle is located above the liquid surface of the central cylinder 1. The flocculant is added above the liquid surface, and the pulp particles are captured synchronously, so that the flocculant and the pulp are mixed more evenly.

Change the original way of feeding the pulp along the tangential direction of the central cylinder 1 to the way that the pulp enters the central cylinder 1 vertically from the distribution point along the pulp discharge pipe 4, and set 8 distribution points so that when the pulp enters the central cylinder, the distribution It is more uniform, and at the same time, it will not cause the sedimentation and accumulation of ore pulp, which makes the operation of the thickener target more stable.

Example 3:

Pulp thickener, including the thickener body, can choose NXZ-18 high-efficiency thickener. The center tube 1 of the thickener body is 700mm above the liquid level. There is an annular distribution pipe 2, and the annular distribution pipe 2 is connected with the pulp feeding pipe 3. , there are 8 distributing points arranged below the annular distributing pipe 2, and the distance between adjacent distributing points is equal. Each of the distributing points is connected downward with a pulp discharge pipe 4, and the discharge port of the pulp discharge pipe 4 is inserted into a place 400 mm below the liquid surface of the central cylinder 1. The kinetic energy of the primary slurry pump transporting the slurry is converted into potential energy, pushing the diluted slurry in the central cylinder to generate dynamic downward impact, improving the mixing efficiency of the slurry and flocculant, and setting the annular distribution pipe 2 and the slurry discharge pipe 4 according to this distance. The particles are uniformly dispersed and of suitable size. A flocculant nozzle is arranged in the central cylinder 1, and the flocculant nozzle is located above the liquid surface of the central cylinder 1, and the number is 8, which are arranged directly above each slurry discharge pipe 4. The flocculant is added above the liquid surface to simultaneously capture the pulp particles, making the mixing of the flocculant and the pulp more uniform, and the capture more rapid and effective.

Change the original way of feeding the pulp along the tangential direction of the central cylinder 1 to the way that the pulp enters the central cylinder 1 vertically from the distribution point along the pulp discharge pipe 4, and set 8 distribution points so that when the pulp enters the central cylinder, the distribution It is more uniform, and at the same time, it will not cause the sedimentation and accumulation of ore pulp, which makes the operation of the thickener target more stable.

Example 4:

Pulp thickener, including the thickener body, can choose NXZ-18 high-efficiency thickener. The center tube 1 of the thickener body is 700mm above the liquid level. There is an annular distribution pipe 2, and the annular distribution pipe 2 is connected with the pulp feeding pipe 3. , there are 8 distributing points arranged below the annular distributing pipe 2, and the distance between adjacent distributing points is equal. Each of the distributing points is connected downward with a pulp discharge pipe 4, and the discharge port of the pulp discharge pipe 4 is inserted into a place 400 mm below the liquid surface of the central cylinder 1. The kinetic energy of the primary slurry pump transporting the slurry is converted into potential energy, pushing the diluted slurry in the central cylinder to generate dynamic downward impact, improving the mixing efficiency of the slurry and flocculant, and setting the annular distribution pipe 2 and the slurry discharge pipe 4 according to this distance. The particles are uniformly dispersed and of suitable size. A flocculant nozzle is arranged in the central cylinder 1, and the flocculant nozzle is located above the liquid surface of the central cylinder 1, and the number is 8, which are arranged directly above each slurry discharge pipe 4. The flocculant is added above the liquid surface to simultaneously capture the pulp particles, making the mixing of the flocculant and the pulp more uniform, and the capture more rapid and effective.

Change the original way of feeding the pulp along the tangential direction of the central cylinder 1 to the way that the pulp enters the central cylinder 1 vertically from the distribution point along the pulp discharge pipe 4, and set 8 distribution points so that when the pulp enters the central cylinder, the distribution It is more uniform, and at the same time, it will not cause the sedimentation and accumulation of ore pulp, which makes the operation of the thickener target more stable.

A distributor 5 is arranged below the central cylinder 1, and the distributor 5 is in the shape of an umbrella with a small top and a large bottom. There is a gap between the lower edge of the distributor 5 and the bottom of the central cylinder 1. Using the static pressure head of the central cylinder and the impact force of the pulp, the pulp is forced to squeeze out from the gap between the central cylinder 1 and the distributor 5, and the pulp goes to the outer circle to increase the sedimentation stroke of the pulp, that is, to increase the sedimentation time of the pulp and fully discharge the water. After being extruded, the pulp is collected into the cone by the rotating rake scraper, and the pulp exiting the cone of the thickener is completely the pulp of the sedimentation layer, and the obtained underflow has a high solid content.

Best practice:

The pulp thickener, including the thickener body, can choose NXZ-18 high-efficiency thickener as the body, and the center tube 1 of the thickener body is 700 mm above the liquid level, and there is an annular distribution pipe 2, and the annular distribution pipe 2 and the pulp feeding pipe 3 are connected, and there are 8 distributing points arranged below the annular distributing pipe 2, and the distance between adjacent distributing points is equal. Each of the distributing points is connected downward with a pulp discharge pipe 4, and the discharge port of the pulp discharge pipe 4 is inserted into a place 400 mm below the liquid surface of the central cylinder 1. The kinetic energy of the primary slurry pump transporting the slurry is converted into potential energy, pushing the diluted slurry in the central cylinder to generate dynamic downward impact, improving the mixing efficiency of the slurry and flocculant, and setting the annular distribution pipe 2 and the slurry discharge pipe 4 according to this distance. The particles are uniformly dispersed and of suitable size. A flocculant nozzle is arranged in the central cylinder 1, and the flocculant nozzle is located above the liquid surface of the central cylinder 1, and the number is 8, which are arranged directly above each slurry discharge pipe 4. The flocculant is added above the liquid surface to simultaneously capture the pulp particles, making the mixing of the flocculant and the pulp more uniform, and the capture more rapid and effective.

Change the original way of feeding the pulp along the tangential direction of the central cylinder 1 to the way that the pulp enters the central cylinder 1 vertically from the distribution point along the pulp discharge pipe 4, and set 8 distribution points so that when the pulp enters the central cylinder, the distribution It is more uniform, and at the same time, it will not cause the sedimentation and accumulation of ore pulp, which makes the operation of the thickener target more stable.

A sleeve rod 6 is further arranged in the center cylinder, and the sleeve rod 6 is connected with a rotating shaft driven by a motor. The rotation direction of the sleeve rod 6 is opposite to that of the turning target of the thickener body. The sleeve rod 6 can be stretched and fixed by a fixing part. The lower end of the sleeve rod 6 is provided with a distributor 5, which is in the shape of an umbrella with a small upper part and a larger lower part. There is a gap between the lower edge of the distributor 5 and the bottom of the central tube 1. The expansion and contraction of the sleeve rod 6 makes the distance between the edge of the distributor 5 and the bottom of the central cylinder 1 adjustable, and the static pressure head of the central cylinder and the impact force of the slurry are used to force the slurry from the gap between the central cylinder 1 and the distributor 5. Squeeze out, the pulp goes to the outer circle, increase the pulp settling stroke, that is, increase the settling time of the pulp, fully squeeze out the water, collect it into the cone by the rotary rake scraper, and the pulp that exits the thickener cone is completely the pulp of the sedimentation layer. The resulting underflow has a high solids content.

A number of illustrative embodiments are mentioned in this specification, which means that a specific structure described in connection with the embodiment is included in at least one embodiment generally described in this application. The appearance of the same expression in multiple places in the specification does not necessarily refer to the same embodiment. Furthermore, when a structure is described in combination with any embodiment, it should be claimed that realizing this structure in combination with other embodiments falls within the scope of the present invention.

Claims (8)

1. ore pulp concentrator, including concentrator body, it is characterised in that：The central tube of described concentrator body（1）Top is set It is equipped with annular cloth tube（2）, annular cloth tube（2）With ore pulp feed pipe（3）Connection, described annular cloth tube（2）Lower section is set More than two cloth shots are equipped with, each described cloth shots are communicated with downwards ore pulp discharge nozzle（4）, ore pulp discharge nozzle（4）'s Discharging opening inserts central tube（1）Under liquid level.

2. ore pulp concentrator according to claim 1, it is characterised in that：Described central tube（1）Inside it is provided with flocculant Shower nozzle, described flocculant shower nozzle are located at central tube（1）Ullage.

3. ore pulp concentrator according to claim 2, it is characterised in that：The quantity of described flocculant shower nozzle goes out with ore pulp Expects pipe（4）Quantity it is corresponding, be arranged at each ore pulp discharge nozzle（4）Surface.

4. ore pulp concentrator according to claim 1, it is characterised in that：Described annular cloth tube（2）It is arranged at center Cylinder（1）At the ㎜ of ullage 700, described ore pulp discharge nozzle（4）Discharging opening insertion central tube（1）Under liquid level at 400 ㎜.

5. ore pulp concentrator according to claim 1, it is characterised in that：The quantity of described cloth shots is 8, adjacent cloth Spacing between shots is equal.

6. ore pulp concentrator according to claim 1, it is characterised in that：Described central tube（1）Lower section is provided with cloth Device（5）, distributing device（5）In up-small and down-big umbrella, distributing device（5）Lower edge and central tube（1）Gap between bottom be present.

7. ore pulp concentrator according to claim 6, it is characterised in that：Loop bar is separately provided with central tube（6）, loop bar （6）Flexible is simultaneously fixed by fixture, described distributing device（5）Positioned at loop bar（6）Lower end.

8. ore pulp concentrator according to claim 7, it is characterised in that：Described loop bar（6）Be connected with rotating shaft, rotating shaft by Motor driven, loop bar（6）Rotation direction and concentrator body to turn target rotation direction opposite.