CN218544031U - Slag slurry conveying pipe network provided with dredging and cleaning device and slag slurry conveying system - Google Patents

Abstract

The utility model provides a slurry conveying pipe network, which comprises a first flushing pipe, a first electric gate valve, a first electric knife valve, a second electric knife valve, a slurry pump slurry inlet pipe, a slurry pump and a slurry pump conveying pipe which are connected in sequence; the slurry inlet pipe of the slurry pump is provided with a first feed inlet and a second feed inlet which are oppositely arranged, and the first feed inlet is used for being connected with a slurry pool; the first flushing pipe is connected to a first connection position of a slurry inlet pipe of the slurry pump, and the first connection position is located on a circumferential wall body of the slurry inlet pipe of the slurry pump; the end part of the first flushing pipe close to the first connection part faces the second feeding hole; the first electric gate valve is arranged on the first flushing pipe; the first electric knife valve is arranged on the slurry inlet pipe of the slurry pump and is positioned between the first connecting part and the second feed inlet; the second electric knife valve is positioned on the conveying pipe of the slurry pump. The utility model discloses can deal with the bursting of sediment stuff pump and the mediation of shutting down the operating mode stifled and wash, the feasibility of implementation is strong, is worth promoting.

Description

Slag slurry conveying pipe network provided with dredging and cleaning device and slag slurry conveying system

Technical Field

The utility model relates to a sediment stuff pump pipeline washs technical field, specifically is an be equipped with dredge stifled and belt cleaning device's sediment thick liquid and carry pipe network and sediment thick liquid conveying system.

Background

In the mineral separation production practice, a pulp tank is widely adopted as a temporary pulp storage and flow regulation facility in the operation flow. The ore pulp in the pulp tank is mostly conveyed to the next production procedure through a pumping pipeline system. The ore pulp in the underflow discharge pipe of the ore pulp tank can be deposited and solidified by standing. The bottom flow pipe of the pulp pool in the pumping pipeline system of the pulp pool is connected with the pulp inlet pipe of the slurry pump, and the pulp inlet pipe is provided with a pulp knife valve; when the slurry pump works, the ore pulp cutter valve is opened; when the slurry pump is stopped, the slurry knife valve is closed. The blockage of the conveying pipeline of the slurry pump can be caused by the hardening of solid materials in the slurry conveyed by the slurry pump, the backflow of the slurry in the conveying pipeline when the slurry pump is stopped and the deposition of residual slurry solid materials.

As a ubiquitous ore pulp pond ore pulp pumping system in mineral processing production, also take place accident or irregular in the production often and be interrupted the maintenance, the sediment stuff pump is shut down this moment, and the ore pulp of sediment stuff pump play thick liquid pipe flows back, stews and can deposit the solidification and easily lead to sediment stuff pump pipe blockage, needs to dredge the stifled washing to sediment stuff pump pipeline urgent.

As shown in fig. 1, the conventional technology is mainly to install a first gate valve 2' and a second gate valve 3' on a slurry inlet pipe (a slurry tank underflow outlet pipe) of a slurry pump, connect a pipeline between the two gate valves with a clean water pipeline, and install a third gate valve 1' on the clean water pipeline.

During production, the first gate valve 1' is in a closed state, and the second gate valve 2' and the third gate valve 3' are in an open state. Before normal production is stopped, manually closing the second gate valve 2', opening the first gate valve 1', and cleaning a pipeline between the second gate valve 2' and a slurry pump 7', a slurry pump 7' and a slurry discharge pipe 6' by using clean water in a clean water pipe 4 '; after the cleaning is finished, the third gate valve 3 'is closed, the second gate valve 2' is opened, the ore pulp pool underflow discharge pipe is cleaned, and finally the first gate valve 1 'and the second gate valve 2' are closed.

When an accident in production needs to be stopped, the ore pulp in the pulp discharge pipe 6' flows back to the ore pulp pool along the gravity of the pulp discharge pipe 6' → the slurry pump 7' → the slurry pump slurry inlet pipeline 5' → the ore pulp pool line, then the second gate valve 2' is manually closed, the first gate valve 1' is manually opened, the pulp discharge pipe 6', the slurry pump 7' and part of the slurry pump slurry inlet pipeline 5' are dredged and cleaned, the third gate valve 3' is manually closed, the second gate valve 2' is opened after cleaning, the underflow discharge pipe of the ore pulp pool is cleaned, and finally the first gate valve 1' and the second gate valve 2' are closed, so that the cleaning and dredging operation of the slurry pump pipeline is completed.

However, the conventional technique has the following drawbacks:

when a sudden accident or irregular maintenance occurs, and the slurry pump 7 'is shut down, the ore slurry is easy to deposit and precipitate at the pipeline joint 5' under the condition of long-time standing, so that the pipeline is blocked.

When the slurry pump is shut down in case of an accident, the slurry in the slurry discharge pipe 6 'flows back into the slurry pool under the action of inertia, so that the slurry pump 7', the second gate valve 2 'and the third gate valve 3' on a return circuit are impacted, damaged and influenced, and the service life of equipment is consumed; meanwhile, the first gate valve 1 'can be damaged by huge backflow pressure, so that the clean water pipeline 4' is polluted, and the dredging and cleaning effect and efficiency of subsequent pipelines are influenced.

Based on this, it is necessary to provide a sediment thick liquid pump delivery pipe network and sediment thick liquid conveying system who is equipped with dredging stifled and belt cleaning device to solve the technical problem that above-mentioned common technique can't deal with in the production accident and the irregular intermittent type shutdown maintenance operating mode.

SUMMERY OF THE UTILITY MODEL

Aim at solving above-mentioned common technique normal shut down in the unable reply production of reply, accident and irregular be interrupted the technical problem of shutting down the maintenance operating mode, the utility model provides a be equipped with dredge stifled and belt cleaning device's sediment thick liquid transport pipe network, advance thick liquid pipe, sediment stuff pump conveyer pipe including first flushing pipe, first electric gate valve, first electric knife valve, second electric knife valve and the sediment stuff pump that connects gradually.

The slurry inlet pipe of the slurry pump is provided with a first feed port and a second feed port which are arranged oppositely, and the first feed port is used for connecting a slurry pool _。

The first flushing pipe is connected to a first connection position of a slurry inlet pipe of the slurry pump, and the first connection position is located on a circumferential wall body of the slurry inlet pipe of the slurry pump; the end of the first flush tube near the first junction faces the second feed opening.

The first electric gate valve is arranged on the first flushing pipe.

The first electric knife valve is arranged on the slurry inlet pipe of the slurry pump and is positioned between the first connecting part and the second feed inlet.

The second electric knife valve is positioned on the conveying pipe of the slurry pump.

Further, the slurry pump pipeline also comprises a second flushing pipe.

The second flushing pipe is connected to a second connection part of the slurry inlet pipe of the slurry pump, and the second connection part is positioned on the circumferential wall body of the slurry inlet pipe of the slurry pump and positioned on one side, close to the slurry pump, of the first electric knife valve; the end part of the second flushing pipe close to the second connection part faces the first feeding hole.

Further, the slurry pump pipeline also comprises a third flushing pipe.

The third flushing pipe is connected to a third connecting part of the slurry inlet pipe of the slurry pump, and the third connecting part is positioned on the circumferential wall body of the slurry inlet pipe of the slurry pump and between the second connecting part and the second feed inlet; the end part of the third flushing pipe close to the third connecting part faces the second feeding hole.

Furthermore, the second flushing pipe and the third flushing pipe share one pipeline at the end parts far away from the slurry inlet pipe of the slurry pump.

The first included angle formed by the end part of the first flushing pipe close to the first connection part and the slurry inlet pipe of the slurry pump is 45 degrees, the second included angle formed by the end part of the second flushing pipe close to the second connection part and the slurry inlet pipe of the slurry pump is 45 degrees, and the third included angle formed by the end part of the third flushing pipe close to the third connection part and the slurry inlet pipe of the slurry pump is 45 degrees.

Furthermore, the end part of the first flushing pipe close to the first connection part is higher than the slurry inlet pipe of the slurry pump, the end part of the second flushing pipe close to the second connection part is higher than the slurry inlet pipe of the slurry pump, and the end part of the third flushing pipe close to the third connection part is higher than the slurry inlet pipe of the slurry pump.

Further, the slurry pump conveying pipe comprises a first pipe and a second pipe which are fixedly connected, the first pipe is fixedly connected with the slurry pump, the second pipe is fixedly connected with the first pipe, the end part, far away from the first pipe, of the second pipe is connected to the outside of the slurry conveying pipe network, and the end part, far away from the first pipe, of the second pipe is arranged on a plane higher than the slurry pump;

the end part of the second pipe far away from the slurry pump is arranged on a plane higher than the slurry pump.

The second electric knife valve is arranged at one end of the first pipe close to the slurry pump.

Further, the device also comprises an ore pulp return pipe and a third electric knife valve;

one end of the ore pulp backflow pipe is communicated with the ore pulp pool, and the other end of the ore pulp backflow pipe is fixedly connected with the conveying pipe of the slurry pump;

the third electric knife valve is arranged at one end of the ore pulp return pipe close to the conveying pipe of the slurry pump.

Furthermore, the device also comprises a second electric gate valve, a first filter and a second filter;

the second electric gate valve is arranged on one side, away from the slurry inlet pipe of the slurry pump, of the second flushing pipe;

the first filter is arranged on the first flushing pipe and is positioned between the first connecting part and the first electric gate valve;

the second filter is arranged on the second flushing pipe and is positioned between the second connecting part and the second electric gate valve.

Furthermore, the slurry pump device further comprises a PLC (programmable logic controller), wherein the PLC comprises an input end and an output end, the input end is in communication connection with the slurry pump, and the output end is in communication connection with at least one of the first electric cutter valve, the second electric cutter valve, the third electric cutter valve, the first electric gate valve and the second electric gate valve.

The utility model also provides a slurry conveying system, which comprises a mortar pool and the slurry conveying pipe network;

the bottom of the mortar pool is communicated with a slurry inlet pipe of a slurry pump of a slurry conveying pipe network, and the top of the mortar pool is communicated with a mortar return pipe of the slurry conveying pipe network.

Compared with the common technique, the utility model discloses at least, including following advantage:

1. the utility model provides a be equipped with and dredge stifled and belt cleaning device's sediment thick liquid and carry pipe network, wherein, the first flushing pipe of mortar pipe network is close to the tip of first junction towards the second feed inlet, and sets up first electric knife valve between first connection is in the second feed inlet. When the emergency accident and the irregular intermittent shutdown maintenance work condition in production are faced, the first flushing pipe can effectively clean the folding angle of the first connection part, and one side of the first electric knife valve close to the first connection part is used for standing deposited cement due to shutdown, so that the kinetic energy of water flow is prevented from being greatly lost at the pipe wall part right opposite to the first flushing pipe. And the slurry after washing directly flows into the mortar pool, so that secondary clogging is avoided.

2. The utility model discloses still set up the second on the sediment stuff pump conveyer pipe and electrically moved the sword valve, when meeting accident and irregular shut down and overhaul the operating mode, the second is electrically moved the sword valve and is closed rapidly, when having avoided the mortar backward flow, other equipment on inertia or the gravitational potential energy damage sediment stuff pump and the pipeline route to reduction equipment life's the condition takes place.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments or common techniques of the present invention, the drawings required to be used in the description of the embodiments or common techniques will be briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

Fig. 1 is a diagram of a slurry pump system equipped with a pipeline cleaning and dredging device in the prior art.

Fig. 2 is a top view of a slurry conveying system apparatus equipped with a slurry conveying pipe network according to an embodiment of the present invention.

Fig. 3 is an elevation view of a slurry conveying system device equipped with a slurry conveying pipe network according to an embodiment of the present invention.

Reference numerals:

1. a slurry tank; 2. a slurry pump; 3. a first connection; 4. a first electric knife valve; 5. a slurry inlet pipe 5 of a slurry pump; a first flush tube; 7. a second flush tube; 8. a third flushing pipe; 9. a first electric gate valve; 10 first and second filters; 11. a second electric gate valve; 12. a clear water pipe; 13. a second electric knife valve; 14. a slurry pump delivery pipe; a third electric knife valve; 16. a pulp return pipe; a PLC controller.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is to be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Moreover, the technical solutions of the present invention between the various embodiments can be combined with each other, but it is necessary to be able to be realized by a person having ordinary skill in the art as a basis, and when the technical solutions are combined and contradictory or cannot be realized, it should be considered that the combination of the technical solutions does not exist, and the present invention is not within the protection scope of the present invention.

When numerical ranges are given in the examples, it is understood that both endpoints of each of the numerical ranges and any number between the endpoints are optional unless the utility model discloses otherwise. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs and are intended to be applied to the practice of the invention.

The utility model provides a be equipped with dredge stifled and belt cleaning device's sediment thick liquid and carry pipe network, including first flushing pipe 6, first electric gate valve 9, first electric knife valve 4, the electric knife valve 13 of second and the thick liquid pump that connects gradually advance thick liquid pipe 5, thick liquid pump 2, thick liquid pump conveyer pipe 14 of sediment.

The slurry inlet pipe 5 of the slurry pump is provided with a first feed inlet and a second feed inlet which are oppositely arranged, and the first feed inlet is used for being connected with the slurry pool 1 _。

An included angle formed by the end part of the first flushing pipe 6 close to the first connection part and the slurry inlet pipe 5 of the slurry pump close to one side of the slurry pool 1 is named as an angle a, an included angle formed by the end part of the third flushing pipe 8 close to the third connection part and the slurry inlet pipe 5 of the slurry pump close to one side of the slurry pool 1 is named as an angle b, and an included angle formed by the end part of the second flushing pipe 7 close to the second connection part and the slurry inlet pipe 5 of the slurry pump close to one side of the slurry pool 2 is named as an angle c.

The first flushing pipe 6 is connected to a first connection part 3 of a slurry inlet pipe 5 of the slurry pump, and the first connection part 3 is positioned on the circumferential wall body of the slurry inlet pipe 5 of the slurry pump; the end of the first flushing pipe 6 near the first connection 3 is directed towards the second feed opening, i.e. the angle a is acute.

The acute angle dip angle can reduce the kinetic energy loss of water flow at the position of the outlet opposite to the pipe wall, so that the water flow rushing to the first electric knife valve 4 has larger impact force, and deposited and solidified mortar can be effectively removed.

In some embodiments, the first flushing pipe 6 can be welded on the pipe wall of the slurry inlet pipe 5 of the slurry pump, so that the slurry is prevented from leaking outside.

The first electric gate valve 9 may be provided in the first flushing pipe 6 to open and close the flushing function of the first flushing pipe 6.

One end of the first flushing pipe 6, which is far away from the slurry pump slurry inlet pipe 5, can be led to a clean water pipe 12, and the clean water pipe 12 can be arranged in parallel with the slurry pump slurry inlet pipe 5.

The clean water pipe 12 can also be arranged in parallel with the slurry pump slurry inlet pipe 5 on the plane higher than the slurry pump slurry inlet pipe 5.

The first electric knife valve 4 is arranged on the slurry inlet pipe 5 of the slurry pump and is positioned between the first connecting part 3 and the second feeding hole.

The slurry inlet pipe 5 of the slurry pump between the first electric knife valve 4 and the slurry pool 1 can be named as an underflow outlet pipe, the first electric knife valve 4 can be used for controlling the slurry inlet pipe 5 of the slurry pump to be opened and closed, and the first flushing pipe 6 and the second flushing pipe 7 can be used for cleaning the blade of the first electric knife valve 4 in a targeted manner while closing the valve, so that the situation that the blade valve is not closed tightly due to the fact that the gap between the blade valve is blocked by mortar particles is avoided, and the opening and closing effect of the blade valve is influenced.

In some embodiments, the second electric knife valve 13 can be arranged on the slurry pump conveying pipe 14, when a sudden accident or irregular shutdown maintenance working condition occurs, the slurry pump 2 is shut down, the slurry pump 2 is extremely easily damaged by impact force caused by backflow of mortar detained in the slurry pump conveying pipe, the second electric knife valve 13 can be closed in time when the mortar flows back, and the third electric knife valve 15 is synchronously opened, so that impact on the mortar can be buffered, and the slurry pump 2 can be effectively protected.

In some embodiments, the slurry pump conduit further comprises a second flush pipe 7.

The second flushing pipe 7 is connected to a second connection part of the slurry inlet pipe 5 of the slurry pump, and the second connection part is positioned on the circumferential wall body of the slurry inlet pipe 5 of the slurry pump and positioned on one side, close to the slurry pump 2, of the first electric knife valve 4; the end of the second flushing pipe 7 near the second junction faces the first inlet, i.e. the angle c is acute

With the aforesaid, above-mentioned acute angle inclination also can reduce rivers and circulate and advance thick liquid pipe 5 when just to the power loss of pipe wall department to the increase is towards the impact force of second feed inlet, makes the mortar that the pipe wall hardens drop, avoids the pipe blockage.

In some embodiments, the slurry pump 2 piping further comprises a third flush pipe 8; the third flushing pipe 8 is connected to a third connection part of the slurry inlet pipe 5 of the slurry pump, and the third connection part is positioned on the circumferential wall body of the slurry inlet pipe 5 of the slurry pump and between the second connection part and the first electric knife valve 4; the end of the third flushing pipe 8 near the third connection is directed towards the second feed opening, i.e. the angle b is acute.

The third connection may be welded to the circumferential wall of the slurry pump inlet pipe 5.

With the aforesaid, above-mentioned acute angle inclination also can reduce rivers and circulate when advancing thick liquid pipe 5 to the sediment stuff pump in the power loss just to pipe wall department to increase the impact force towards first electric knife valve 4, make the mortar that the pipe wall hardens drop, avoid the pipeline to block up.

Meanwhile, the impact force of the second flushing pipe 7 on the first electric knife valve 4 can be increased, and by combining the cleaning effect of the first flushing pipe 6, the two sides of the first electric knife valve 4 can be cleaned to prevent particle deposition, so that the phenomenon that when the slurry pump 2 is stopped, mortar on the two sides is statically deposited, hardened and blocked to further influence the normal opening and closing of the valve is avoided.

In some embodiments, the third flushing pipe 8 and the second flushing pipe 7 share one pipeline at the end parts far away from the slurry pump slurry inlet pipe 5, so that the number of the gate valves is controlled within two or less, the control is convenient, and the cost is saved.

In other embodiments, angle a is 45, angle b is 45, and angle c is 45; the impact force and the flow of the water flow in the direction of forming the acute angle can be considered while the impact force of the water flow in the flushing pipe is increased in the direction of forming the obtuse angle.

Illustratively, the end of the first flushing pipe 6 close to the first junction 3 can be arranged higher than the plane of the slurry inlet pipe 5 of the slurry pump, the end of the third flushing pipe 8 close to the third junction can be arranged higher than the plane of the slurry inlet pipe 5 of the slurry pump, and the end of the second flushing pipe 7 close to the second junction can be arranged higher than the plane of the slurry inlet pipe 5 of the slurry pump 2.

On one hand, the arrangement of the height difference can slow down the backflow situation of the mortar under the action of water flow, and the mortar is prevented from flowing into the first flushing pipe 6, the second flushing pipe 7 and the third flushing pipe 8, so that the clean water pipe 12 is polluted.

As can be seen by combining the figure 1, in the common technology, before the normal production of the slurry pump is stopped, the second gate valve 2' is firstly closed, the first gate valve 1' and the third gate valve 3' are opened, the slurry pump slurry discharge pipe 6' is communicated with the clear water pipeline 4', the slurry in the slurry pump conveying pipeline can flow back to pollute the clear water pipeline under the pressure fluctuation, and the clear water pipeline valve is not closed tightly due to solid particles in the slurry. With the combination of fig. 2 and 3, the height difference between the flushing pipe and the slurry inlet 5 of the slurry pump can effectively prevent the phenomenon.

On the other hand, the impact force of the water flow on the connecting part is increased by the gravitational potential energy of the water flow falling from the height. When the slurry pump 2 is stopped, the slurry in the slurry inlet pipe 5 of the slurry pump slowly flows and even stands still, the slurry in the pipeline is deposited and silted, and particularly, the part with a complex structure, such as a fluid junction of a connecting part, is easy to harden and block. In this case, the slow inflow of clean water not only can not relieve the blockage condition, but also easily causes the overlarge pressure at the pipe orifice, and threatens the service life of the pipeline.

Only the impact force of the increased water flow can peel off the hardened part, so that the connection part is efficiently cleaned and dredged.

Can weld first flushing pipe 6, second flushing pipe 7, third flushing pipe 8 in the thick liquid pipe 5 tops is advanced to the sediment stuff pump for angle a, angle b, angle c are 45 with thick liquid pipe 5 is advanced to the sediment stuff pump in the vertical direction, and at this moment, rivers go up from vertical direction down, and gravitational potential energy turns into kinetic energy, and kinetic energy is less in the pipe wall department loss under first, second, third junction, and rivers take huge impact force to lead to thick liquid pipe 5 is advanced to the sediment stuff pump.

In some embodiments, the slurry pump transport pipe 14 comprises a first pipe and a second pipe which are fixedly connected, the first pipe is fixedly connected with the slurry pump 2, and the end of the second pipe, which is far away from the slurry pump 2, is arranged above the plane of the slurry pump 2;

the second electric knife valve 13 is arranged at one end of the first pipe close to the slurry pump 2.

Illustratively, the first pipe may be L-shaped, and includes a horizontal pipe and a vertical pipe, and the horizontal pipe extends in the horizontal direction after being fixedly connected with the slurry pump 2; the vertical pipe is arranged in the vertical direction, one end of the vertical pipe is connected with the transverse pipe, and the other end of the vertical pipe is connected with the second pipe extending along the horizontal direction.

In some embodiments, the slurry pump delivery pipe network further comprises a slurry return pipe 16 and a third electric knife valve 15; wherein, one end of the ore pulp return pipe 16 is communicated with the ore pulp pool, and the other end is fixedly connected with the slag pulp conveying pipe 14.

When an accident or irregular shutdown maintenance working condition occurs, the slurry pump 2 is shut down, the second electric knife valve 11 is closed, the third electric knife valve 15 is synchronously opened, and mortar retained in the ore pulp backflow pipe 16 and the slurry pump conveying pipe 14 rushes to the mortar pool 1 due to gravity and inertia, so that the mortar is prevented from being statically placed in a pipeline and being hardened and blocked, and the cleaning burden is relieved.

The one end that ore pulp back flow pipe 16 kept away from ore pulp pond 1 can fixed connection to the junction of standpipe and second pipe, promptly, ore pulp back flow pipe 16 can be higher than the plane setting that the mortar pump entered the thick liquid pipe, and when meeting accident or irregular interruption shut down maintenance operating mode, sediment stuff pump 2 shut down in the production, the mortar in the mortar back flow pipe can flow back to ore pulp pond 1 under the action of gravity.

The third electric knife valve 15 can be arranged at one end of the pulp backflow pipe 16 close to the slurry pump conveying pipe, so that when the slurry pump 2 is stopped, mortar in the mortar backflow pipe can flow into the slurry pool 1 instead of directly rushing towards the slurry pump 2 along the slurry conveying pipe, and unnecessary loss is caused.

In other embodiments, the slurry conveying pipe network further comprises a second electric gate valve 11, a first filter 10 and a second filter 10; the second electric gate valve 11 is arranged on one side of the third flushing pipe 8, which is far away from the slurry inlet pipe 5 of the slurry pump; the first filter 10 is arranged on the first flushing pipe 6 and is positioned between the first connection 3 and the first electric gate valve 9; a second filter 10 is arranged on the second flush pipe 7 between the second connection and a second electric gate valve 11.

In combination with the above analysis, it can be seen that when the first electric knife valve 4 is closed, the first flushing pipe 6, the second flushing pipe 7, and the third flushing pipe 8 can be used to simultaneously and respectively perform targeted and efficient cleaning on the first feed port, the underflow feed pipe, the first electric knife valve 4, the slurry inlet pipe 5 of the slurry pump close to the second feed port, and the second feed port. As can be seen from fig. 1, the conventional technology still stays in the stage that one of the second gate valve 2 'or the third gate valve 3' must be closed to respectively clean the underflow discharge pipe of the slurry tank, the slurry inlet pipe of the slurry pump and the conveying pipe, and the efficiency of cleaning the pipeline and the equipment at the same time is low, so that the coagulation condition of the retained slurry under the condition of long-time standing is aggravated.

When first electric knife valve 4 opened, the whole thick liquid pump of clear water circulation advance thick liquid pipe 5 pipelines, can control the washing gear through opening and close to first electric gate valve 9, second electric gate valve 11 this moment. When high-efficiency cleaning in a short time is required, the first electric gate valve 9 and the second electric gate valve 11 can be opened simultaneously; when the time is abundant and the requirement on the cleaning degree is not high, one of the gate valves can be selectively closed, so that the water-saving effect is achieved.

Through one side that is close to connecting portion at the gate valve set up first, second filter 10, large granule mortar when can filtering the mortar backward flow prevents that the mortar card from going into the gate valve influence and opening and close, has avoided the device loss and the 12 pollutions of clean water pipe of gate valve.

The first and second filters 10 may be Y-type filters, for example, to protect fittings on the flushing pipe from wear and clogging by filtering out mortar particles in the water, and to protect the flushing pipe from normal operation.

In some embodiments, the slurry delivery pipe network further comprises a PLC controller 17, the PLC controller 17 comprises an input end and an output end, the input end is in communication connection with the slurry pump 2, and the output end is in communication connection with at least one of the first electric knife valve 4, the second electric knife valve 13, the third electric knife valve 15, the first electric gate valve 9 and the second electric gate valve 11.

It can be seen from the combination of fig. 1 that, in the conventional technology, when the emergency working condition or the shutdown maintenance is met, the slurry pump is stopped, the first gate valve 1', the second gate valve 2' and the third gate valve 3 'are not interlocked and electrically controlled with the pumping system, and both need to be manually opened and closed, the response time is long, the slurry of the slurry pump discharge pipe 6' in a short time forms a huge impact force due to gravity, and the slurry flows back to the slurry pump 7 'and the first gate valve 1', the second gate valve 2 'and the third gate valve 3', so that the slurry pump slurry inlet pipe 5 and the slurry pump conveying pipe 14 form a reverse backflow passage, and further the slurry pump 2 and related valve equipment are damaged and even the clean water pipe 12 is polluted.

Exemplarily, as can be seen from fig. 2 and 3, when the PLC controller 17 is in communication connection with the first electric knife valve 4, the second electric knife valve 13, and the third electric knife valve 15, an instruction can be transmitted to the PLC controller 17, so that the electric knife valves are rapidly opened and closed, and the response time is shortened, compared with a relatively rigid manual opening and closing mode, the system can effectively protect relevant equipment and prevent the relevant equipment from being backflushed by the reflowed ore pulp; the pollution of the clear water pipe 12 by the reflowing ore pulp is avoided, the labor intensity of workers is reduced, and the production efficiency is improved.

The second electric knife valve 13 and the third electric knife valve 15 can be interlocked with the slurry pump 2, so that when the slurry pump 2 is shut down, the second electric knife valve 13 is directly closed, and the third electric knife valve 15 is directly opened, thereby forming a gravity protection system of the slurry pump 2.

When the slurry pump 2 stops in sudden working conditions, the second electric knife valve 13 is closed rapidly, and the third electric knife valve 15 is opened rapidly, so that the slurry pump 2 is protected. On the one hand, the second electric knife valve 13 protects the slurry pump 2 from being impacted by mortar in the slurry pump conveying pipe 14, and the third electric knife valve 15 can enable backflow ore pulp to flow back into the ore pulp pond 1, so that the bearing pressure of the horizontal pipe, the vertical pipe connecting part and the second electric knife valve 13 on the mortar is reduced. On the other hand, the quick opening and closing can prevent mortar from being accumulated on the knife valve closing opening to cause the knife valve to be not closed tightly, and the control effect is influenced.

The first electric knife valve 4 can be closed at the same time, continuous input of mortar is avoided, and cleaning and blockage dredging pressure is increased.

And then the switches of the first electric knife valve 4, the second electric knife valve 13 and the third electric knife valve 15 are respectively regulated and controlled to achieve different cleaning effects.

Further exemplarily, when the PLC controller 17 is in communication connection with the first electric gate valve 9 and the second electric gate valve 11, a command may be transmitted to the PLC controller 17, so that the electric knife valve is opened and closed quickly, and the response time is shortened. The rapid closing of the electric knife valve can relieve the pulp backflow when the valve is slowly closed and the pollution condition of clear water when the valve is not tightly closed.

The utility model also provides a slurry conveying system, which comprises a slurry pool 1 and any one of the slurry conveying pipe networks; wherein, the bottom of the pulp tank 1 is communicated with a pulp inlet pipe 5 of a slag pulp pump of a slag pulp conveying pipe network, and the top of the pulp tank 1 is communicated with a pulp return pipe 16 of the slag pulp conveying pipe network.

To facilitate further understanding of the present invention by those skilled in the art, the following description is given by way of example:

it should be noted that the underflow outlet pipe described below is a part of the slurry inlet pipe of the mortar pump, and one end of the underflow outlet pipe is led to the slurry pool 1, and the other end of the underflow outlet pipe is led to the first electric knife valve 4. When the underflow discharge pipe and the slurry inlet pipe 5 of the slurry pump are described in parallel, the underflow discharge pipe and the slurry inlet pipe 5 of the slurry pump are connected with the first electric knife valve 4 and one side of the slurry pump 2.

The specific implementation process steps are shown in fig. 1-2: the slurry inlet pipe 5 of the slurry pump is communicated with the slurry pool 1 and the slurry pump 2. The first flushing pipe 6 is connected to the first junction 3 around the roof of the slurry inlet pipe 5 of the slurry pump, the angle formed by the end part of the first flushing pipe 6 close to the slurry inlet pipe 5 of the slurry pump and the slurry inlet pipe 5 of the slurry pump close to one side of the slurry pool 1 is 45 degrees, and the slurry inlet pipe 5 of the slurry pump connecting the first junction 3 and the slurry pump 2 is also provided with a first electric knife valve 4. The second flushing pipe 7 is connected with the slurry inlet pipe 5 of the slurry pump at a second joint, the second joint is positioned on the periphery of the top wall of the slurry inlet pipe 5 of the slurry pump, which is connected with the first electric knife valve 4 and the slurry pump 2, and the angle formed by the end part of the third flushing pipe 8 close to the slurry inlet pipe 5 of the slurry pump and the slurry inlet pipe 5 of the slurry pump close to one side of the slurry pump 2 is 45 degrees. The third flushing pipe 8 and the slurry pump slurry inlet pipe 5 are connected at a third connecting part, the third connecting part is positioned at the periphery of the top wall of the slurry pump slurry inlet pipe 5 connected with the second feeding hole and the second connecting part, and the angle formed by the end part of the third flushing pipe 8 close to the slurry pump slurry inlet pipe 5 and the slurry pump slurry inlet pipe 5 close to one side of the slurry pool 1 is 45 degrees. The ends of the second flushing pipe 7 and the third flushing pipe 8 close to the clean water pipe 12 share one water pipe.

The first flushing pipe 6 is respectively provided with a first filter 10 and a first electric gate valve 9 along the direction from the first connecting part 3 to the clean water pipe 12; the third flushing pipe 8 is respectively provided with a second filter 10 and a second electric gate valve 11 along the direction from the second connection part to the clean water pipe 12; the second flushing pipe 7 and the third flushing pipe 8 share the second filter 10 and the second electric gate valve 11.

One end of a slurry pump conveying pipe 14 is communicated with the slurry pump 2, the other end of the slurry pump conveying pipe is communicated with the outside of the slurry pump conveying system, and a second electric knife valve 13 is further arranged at one end, close to the slurry pump 2, of the slurry pump conveying pipe 14. The pulp backflow pipe 16 is arranged on the plane higher than the slurry pump 2, one end of the pulp backflow pipe is communicated with the pulp pool 1, the other end of the pulp backflow pipe is fixedly connected with the slurry pump conveying pipe 14, and a third electric knife valve 15 is further arranged at one end, close to the slurry pump conveying pipe 14, of the pulp backflow pipe 16.

The PLC 17 comprises an input end and an output end, and the input end is in communication connection with the first electric knife valve 4, the second electric knife valve 13, the third electric knife valve 15, the first electric gate valve 9 and the second electric gate valve 11.

And a second electric knife valve 13 and a third electric knife valve 15 are arranged to be interlocked with the slurry pump 2.

1. When the ore pulp is normally conveyed to a working condition, the first electric knife valve 4 and the second electric knife valve 13 are opened, the first electric gate valve 9, the second electric gate valve 11 and the third electric knife valve 15 are closed, and the ore pulp is conveyed to the next production procedure through the ore pulp pool 1, the pulp inlet pipe 5 of the slurry pump, the first electric knife valve 4, the slurry pump 2, the slurry pump conveying pipe 14 and the second electric knife valve 13.

2. When the working condition of the pipeline is cleaned after normal ore pulp conveying is finished, the first electric knife valve 4 is closed, and the first electric gate valve 9 and the second electric gate valve 11 are opened. Clear water enters a slurry inlet pipe 5 of the slurry pump through a second flushing pipe 7 and a third flushing pipe 8, one side of a first electric knife valve 4, the slurry inlet pipe 5 of the slurry pump and a second discharge port are cleaned completely, the slurry pump 2 is pressurized and conveyed to the next production process, cleaning and dredging of a pipeline are completed in the process that the cleaning water flows through a slurry pump conveying pipe 14, the slurry pump 2 is shut down after the cleaning and dredging of the pipeline are completed, and a second electric gate valve 11 is closed; meanwhile, the clear water washes and dredges the underflow discharge pipe of the pulp tank and the first electric knife valve 4 on one side through the first flushing pipe 6, and the phenomenon that the pulp is deposited and hardened due to overlong standing time is prevented.

3. When an accident or an irregular intermittent shutdown working condition occurs, the slurry pump 2 is shut down, the second electric knife valve 13 is closed in a linkage manner, the third electric knife valve 15 is opened in a linkage manner, and retained slurry in the slurry pump conveying pipe 14 flows back into the slurry pool through the slurry pump conveying pipe 14 and the slurry return pipe 16 in a gravity manner; meanwhile, the first electric knife valve 4 is closed, the first electric gate valve 9 and the second electric gate valve 11 are opened, and the first flushing pipe 6, the third flushing pipe 8 and the second flushing pipe 7 respectively flush the underflow discharge pipe of the ore pulp tank and the pulp inlet pipe 5 of the slurry pump; after all retained ore pulp flows back into the ore pulp pool 1, the third electric knife valve 15 is closed, the second electric knife valve 13 is opened, and the clear water of the third flushing pipe 8 and the second flushing pipe 7 passes through the slurry pump 2 and then cleans the slurry pump conveying pipe 14.

In the description of the present invention, it should be understood that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the invention.

In the present invention, unless otherwise explicitly specified or limited, for example, it may be fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; the terms may be directly connected or indirectly connected through an intermediate medium, and may be used for communicating the inside of two elements or for interacting with each other, unless otherwise specifically defined, and the specific meaning of the terms in the present invention will be understood by those skilled in the art according to the specific circumstances.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (10)

1. A slurry conveying pipe network provided with a dredging and cleaning device is characterized by comprising a first flushing pipe, a first electric gate valve, a first electric knife valve, a second electric knife valve, a slurry pump slurry inlet pipe, a slurry pump and a slurry pump conveying pipe which are sequentially connected;

the slurry inlet pipe of the slurry pump is provided with a first feed inlet and a second feed inlet which are oppositely arranged, and the first feed inlet is used for being connected with a slurry pool;

the first flushing pipe is connected to a first connection position of the slurry inlet pipe of the slurry pump, and the first connection position is located on the circumferential wall body of the slurry inlet pipe of the slurry pump; the end part of the first flushing pipe close to the first connection part faces the second feeding hole;

the first electric gate valve is arranged on the first flushing pipe;

the first electric knife valve is arranged on the slurry inlet pipe of the slurry pump and is positioned between the first connecting part and the second feed inlet;

the second electric knife valve is positioned on the conveying pipe of the slurry pump.

2. The slurry transport pipe network of claim 1, further comprising a second flush pipe;

the second flushing pipe is connected to a second connection part of the slurry inlet pipe of the slurry pump, and the second connection part is positioned on the circumferential wall body of the slurry inlet pipe of the slurry pump and positioned on one side, close to the slurry pump, of the first electric knife valve; the end part of the second flushing pipe close to the second connection part faces the first feeding hole.

3. The slurry transport pipe network of claim 2, further comprising a third flush pipe;

the third flushing pipe is connected to a third connection part of the slurry inlet pipe of the slurry pump, and the third connection part is positioned on the circumferential wall body of the slurry inlet pipe of the slurry pump and between the second connection part and the second feed inlet; the end part of the third flushing pipe close to the third connection part faces the second feed port.

4. The slurry conveying pipe network according to claim 3, wherein the ends of the second flushing pipe and the third flushing pipe, which are far away from the slurry inlet pipe of the slurry pump, share a pipeline;

the first flushing pipe is close to the first contained angle that the tip of first junction with the thick liquid pipe formation is advanced to the sediment stuff pump is 45, the second flushing pipe is close to the tip of second junction with the thick liquid pipe formation is advanced to the sediment stuff pump is 45, the third flushing pipe is close to the tip of third junction with the thick liquid pipe formation is advanced to the sediment stuff pump is 45 to the third contained angle.

5. The slurry conveying pipe network according to claim 3, wherein the end of the first flushing pipe near the first connection is higher than the slurry pump slurry inlet pipe, the end of the second flushing pipe near the second connection is higher than the slurry pump slurry inlet pipe, and the end of the third flushing pipe near the third connection is higher than the slurry pump slurry inlet pipe.

6. The slurry conveying pipe network according to claim 1, wherein the slurry pump conveying pipe comprises a first pipe and a second pipe which are fixedly connected, the first pipe is fixedly connected with the slurry pump, the second pipe is fixedly connected with the first pipe, the end part, far away from the first pipe, of the second pipe is connected to the outside of the slurry conveying pipe network, and the end part, far away from the first pipe, of the second pipe is arranged above the plane of the slurry pump;

the second electric knife valve is arranged at one end, close to the slurry pump, of the first pipe.

7. The slag slurry conveying pipe network according to claim 1, further comprising a slurry return pipe and a third electric knife valve;

one end of the ore pulp return pipe is communicated with the ore pulp pool, and the other end of the ore pulp return pipe is fixedly connected with the slurry pump conveying pipe;

the third electric knife valve is arranged at one end of the ore pulp return pipe close to the conveying pipe of the slurry pump.

8. The slurry transport pipe network of claim 2, further comprising a second electric gate valve, a first filter, and a second filter;

the second electric gate valve is arranged on one side, away from the slurry inlet pipe of the slurry pump, of the second flushing pipe;

the first filter is arranged on the first flushing pipe and is positioned between the first connecting part and the first electric gate valve;

the second filter is arranged on the second flushing pipe and is positioned between the second connecting part and the second electric gate valve.

9. The slurry conveying pipe network of claim 8, further comprising a PLC controller, wherein the PLC controller comprises an input end and an output end, the input end is in communication connection with the slurry pump, and the output end is in communication connection with at least one of the first electric knife valve, the second electric knife valve, the third electric knife valve, the first electric gate valve and the second electric gate valve.

10. A slurry delivery system comprising a slurry tank and a slurry delivery pipe network as claimed in any one of claims 1 to 9;

the bottom of the mortar pool is communicated with a slurry inlet pipe of a slurry pump of the slurry conveying pipe network, and the top of the mortar pool is communicated with a mortar return pipe of the slurry conveying pipe network.

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