CN218619166U - Mine mud discharging system capable of enhancing pipeline pressure - Google Patents

Abstract

The utility model discloses a mine mud discharging system, include: the system comprises at least four stages of external discharge pumps, at least four stages of standby pumps, a valve array and a circulating pipeline, wherein the external discharge pumps and the standby pumps at all stages are respectively communicated in series; the outlet of the first-stage external discharge pump is communicated with the external port A of the valve array, and the inlet of the second-stage external discharge pump is communicated with the external port C of the valve array; the outlet of the first-stage standby pump and the inlet of the second-stage standby pump are communicated with the external port B of the valve array; one end of the circulating pipeline is communicated with the external D port of the valve array, and the other end of the circulating pipeline is communicated with the buffer tank. The utility model can increase or reduce the serial and parallel use modes and the number of the pumps according to the requirements, and can back flush the pumps, avoid blockage and improve the pressure of the pipeline; the concentration of the slurry can be stabilized in a proper range, and the stable operation condition of the external discharge pump and the standby pump is ensured.

Description

Mine mud discharging system capable of enhancing pipeline pressure

Technical Field

The utility model relates to a mineral processing field especially relates to a mine mud discharging system that can pipeline pressure by force.

Background

In the existing aluminum ore production process, a slurry pump is usually adopted to convey tailings to a tailing pond, one or more tailings ponds are usually built at positions which are dozens of or twenty kilometers away from a mineral separation point due to the limitation of geographical conditions, the phenomena of long pumping distance and high lift exist, when slurry is conveyed at a long distance and a high lift, a plurality of booster pump stations are usually required to be built on a conveying pipeline, a certain distance is reserved between every two booster pump stations, so that the occupied area and the investment amount are large, and the management is not easy; meanwhile, the device is influenced by production and scheduling of the mine enterprises, sometimes has large sludge discharge demand and sometimes has small demand and unstable flow, if a fixed pump set is adopted for conveying, the pumping capacity is fixed, the flexibility is poor, and meanwhile, the phenomena of large pipeline pressure and flow fluctuation can occur, so that the production progress is influenced.

Chinese patent CN 202379467U discloses a system for conveying tailings by sand pumps in multistage series connection, each sand pump of the system is provided with a high-pressure water seal water pump, each sand pump is directly connected in series connection mode through an intermediate connecting pipe in sequence, and an ore pulp constant-pressure pool is arranged at the upstream of the first sand pump; the first-stage sand pump is communicated with tailing slurry in the ore slurry constant-pressure pool through an ore slurry inlet pipe, the emergency accident treatment pool is only arranged at the position adjacent to the last-stage sand pump, the last-stage sand pump is provided with a variable frequency controller for controlling the rotating speed of a motor of the last-stage sand pump so as to control the liquid level of the tailing slurry in the constant-pressure pool, and the last-stage sand pump is communicated with the tailing pool through a conveying pipe; the pumps designed by the system are fixedly connected in series, the pumping capacity is fixed, when one pump has a problem, the system cannot run and cannot be adjusted according to the field production condition, the flexibility is poor, and the pipeline pressure cannot be enhanced and the flow cannot be increased when the sludge discharge requirement fluctuates; there is a need for a mine sludge discharge system that can regulate the pressure and flow of strong pipelines according to the field production conditions.

The above background disclosure is only provided to aid in understanding the concepts and technical solutions of the present invention, and it does not necessarily belong to the prior art of the present patent application, and it should not be used to assess the novelty and inventive step of the present application without explicit evidence that the above content has been disclosed at the filing date of the present patent application.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a main aim at overcomes the defect that above-mentioned background art exists, provides a mine mud discharging system that can adjust strong pipeline pressure, flow according to the on-the-spot production condition.

In order to achieve the above object, the utility model provides a can strong pipeline pressure's row mud system, include:

the system comprises at least four stages of external discharge pumps, wherein the external discharge pumps at all stages are connected in series and communicated, the inlet of the first stage of external discharge pump in the external discharge pumps is communicated with the outlet of a buffer tank, and the outlet of the last stage of external discharge pump in the external discharge pumps is communicated with a sludge discharge warehouse through an external discharge pipeline;

at least four stages of standby pumps, wherein each stage of standby pump is connected in series and communicated, the inlet of the first stage of standby pump in the standby pumps is communicated with the outlet of the buffer tank, and the outlet of the last stage of standby pump in the standby pumps is communicated with the efflux pipeline, so that the standby pumps are communicated with the efflux pipeline in parallel; when the external discharge pump fails, the standby pump can be switched immediately for use, so that the production is not influenced, and the reliability is high;

the valve array is provided with four external interfaces, the outlet of the first-stage external discharge pump is communicated with the external interface A of the valve array, and the inlet of the second-stage external discharge pump is communicated with the external interface C of the valve array; the outlet of the first-stage standby pump and the inlet of the second-stage standby pump are simultaneously communicated with the external port B of the valve array;

the circulating line, circulating line one end with the D external tapping intercommunication of valve battle array, the other end with the buffer tank intercommunication, be equipped with flow control valve on the circulating line, flow control valve is used for adjusting the flow of circulation stirring, ensures that mud concentration is stable.

Preferably, the valve array comprises a stop valve and a distribution pipe, the distribution pipe is of a loop pipe structure, and the four external interfaces are respectively arranged at four corners of the distribution pipe and are communicated with the distribution pipe; the stop valves are respectively arranged on the external interface and the four side pipelines of the distribution pipe; the first-stage standby pump is characterized in that a first valve is arranged on an inlet pipeline of the first-stage outer discharge pump, a second valve is arranged on an inlet pipeline of the first-stage standby pump, a third valve is arranged on an outlet pipeline of the last-stage outer discharge pump, and a fourth valve is arranged on an outlet pipeline of the last-stage standby pump.

Preferably, the emergency system further comprises an emergency pipe, one end of the emergency pipe is communicated with the outlet of the last-stage outward-discharging pump and the outward-discharging pipeline at the same time, the other end of the emergency pipe is communicated with the emergency pool, a fifth valve is arranged on the emergency pipe, and the outlet pipeline of the last-stage standby pump is communicated to the emergency pipe and used for discharging slurry to the emergency pool in an emergency when the system fails, so that slurry leakage is avoided, and the environment is prevented from being polluted; and the outer discharge pipeline is respectively provided with a sixth valve, a check valve, a pressure sensor and a first flowmeter, the check valve can prevent mud in the outer discharge pipeline from flowing backwards, and the pressure sensor and the first flowmeter are respectively used for detecting the pressure and the flow in the outer discharge pipeline so as to facilitate the system to adjust and enable the outer discharge pump and the standby pump to operate at the corresponding working condition points.

Preferably, the system further comprises a serial pipe, one end of the serial pipe is communicated with a pipeline between the last stage of external discharge pump and the third valve, the other end of the serial pipe is communicated with a pipeline between the first stage of standby pump and the second valve, and a seventh valve is arranged on the serial pipe, so that the external discharge pump and the standby pump can be connected in series for use, and the maximum lift of the system design is achieved.

Preferably, be equipped with agitating unit on the buffer tank, agitating unit includes agitator motor, (mixing) shaft and stirring paddle leaf, agitator motor establishes the buffer tank top, (mixing) shaft one end with agitator motor's output shaft, the other end stretches into inside the buffer tank, stirring paddle leaf establishes on the (mixing) shaft, through setting up agitating unit, form the second grade stirring with the circulating line combination, make the mud in the buffer tank more even.

Preferably, the buffer tank is provided with a sludge inlet, a dosing port and a water inlet, the sludge inlet is communicated with the thickening tank through a sludge inlet pipe, the dosing port is communicated with the dosing tank through a dosing pipe, and the water inlet is communicated with a tap water tank through a water inlet pipe; and the mud inlet pipe, the chemical feeding pipe and the water inlet pipe are respectively provided with a second flowmeter, a third flowmeter and a fourth flowmeter, and the concentration in the buffer tank is adjusted by proportionally controlling the mud feeding amount, the chemical feeding amount and the water feeding amount, so that the mud concentration is stabilized in the required range of working media of the external discharge pump and the backup pump.

Preferably, a liquid level sensor and a slurry concentration measuring instrument are arranged on the buffer tank and used for detecting the material level and the concentration of the slurry in the buffer tank, so that the automation is improved.

Preferably, the jar jade of buffer tank is equipped with the intermediate layer, be equipped with the honeycomb layer in the intermediate layer, the intermediate layer bottom is equipped with the cooling water entry, the intermediate layer top is equipped with the cooling water export, through cooling the mud in the buffer tank, avoids the cavitation to appear, influences the operation of efflux pump and reserve pump.

Preferably, the bypass pipes are connected in parallel to the outer discharge pumps and the reserve pumps at all stages, eighth valves are arranged on the bypass pipes, ninth valves are respectively arranged on pipelines connected in series to the outer discharge pumps and the reserve pumps at all stages, the number of the outer discharge pumps or the reserve pumps can be adjusted as required through the bypass pipes, and the whole system cannot be shut down due to the fact that one pump fails.

Preferably, the system further comprises a group control unit, wherein the group control unit is provided with a signal acquisition end, a controller and a control output end, and the signal acquisition end is electrically connected with the pressure sensor, the first flowmeter, the second flowmeter, the third flowmeter, the fourth flowmeter, the liquid level sensor and the mud concentration measuring instrument through wires or wireless, and is used for acquiring running state parameter signals of the mine mud discharging system and transmitting the running state parameter signals to the controller for operation processing; the control output end is electrically connected with the outer discharge pump, the backup pump, the valve array, the flow regulating valve, the first valve, the second valve, the third valve, the fourth valve, the fifth valve, the sixth valve, the seventh valve, the eighth valve and the ninth valve, and is used for receiving and executing the operation result of the controller so as to control the working mode of the mine sludge discharge system.

The beneficial effects of the utility model include: the mud discharging pump with more than four stages connected in series and the standby pump with more than four stages connected in series are arranged, only one group of pumps needs to be started when the mud discharging amount is small at ordinary times, two groups of pumps are switched to be used simultaneously when the mud discharging amount is large, the flow can be effectively improved, the combination mode of the two groups of pumps can be changed through a valve array, the pumps can be scheduled in series and parallel at any time, the flexibility is high, the pipeline pressure can be effectively enhanced, the lift can be improved, the flow can be changed, and the reliability and the applicability can be improved; the concentration of the slurry is automatically adjusted by adopting the buffer tank, so that the concentration of the slurry is always kept in a stable range, all stages of pumps can run in an optimal state, and the running condition is stable; the temperature of the slurry is reduced through the buffer tank, so that the cavitation phenomenon can be effectively reduced, and the operation efficiency of the pump is effectively ensured; the whole system can automatically increase or reduce the number of pumps used in series and in parallel according to the requirements of the site, effectively improve the pressure and flow of the pipeline, has low energy consumption, less investment and good management, does not influence the whole system because one pump fails, and has stronger reliability; and through the combination mode that the regulating valve array is opened, can carry out the back flush to the dredge pump and the reserve pump of this system, avoid blockking up, further promote pipeline pressure and flow.

Drawings

Fig. 1 is the embodiment of the utility model provides a mine mud discharging system schematic diagram.

Fig. 2 is a schematic diagram of buffer tank connection in an embodiment of the present invention.

Fig. 3 is a schematic diagram of a valve array connection in an embodiment of the present invention.

Fig. 4 is a schematic view of a bypass connection in an embodiment of the present invention.

Fig. 5 is a schematic view of the sandwich structure of the buffer tank in the embodiment of the present invention.

Fig. 6 is a system block diagram in an embodiment of the invention.

Reference numerals:

1, a buffer tank; 2, a flow regulating valve; 3 a circulation pipeline; 4, a back pressure valve; 5 an efflux pump; 6 a third valve; 7 a pressure sensor; 8 a first flow meter; 9 a standby pump; 10 a check valve; 11 an outer discharge pipe; 12, discharging a mud warehouse; 13 an emergency pipe; 14 a fifth valve; 15 a fourth valve; 16 an emergency pool; 17 connecting tubes in series; 18 a seventh valve; 19 a backup pump; 20 a second valve; 21 a first valve; 22, valve arrays; 23 distributing pipes; 2401 a first stop valve; 2402 a second stop valve; 2403 a third stop valve; 2404 a fourth stop valve; 2405 a fifth stop valve; 2406 a sixth stop valve; 2407 a seventh stop valve; 2408 an eighth stop valve; 25 external interface; 26 a thickening tank; 27 a medicine adding pool; 28 a tap water basin; 2901 adding mud pump; 2902 dosing pumps; 2903 adding a water pump; 30, a water inlet pipe; 31 a fourth flow meter; 32 a stirring motor; 33 stirring shaft; 34 stirring blades; 35 a mud inlet; 36 medicine adding openings; 37 a water inlet; 38 a mud inlet pipe; 39 a medicine feeding pipe; 40 a second flow meter; 41 a third flow meter; 42 a liquid level sensor; 43 mud concentration measuring instrument; 44 a honeycomb layer; 45 a cooling water inlet; 46 a cooling water outlet; 47 a bypass pipe; 48 an eighth valve; 49 a ninth valve; 50 a controller; 51 a signal acquisition end; 52 a control output; 53 frequency converter.

Detailed Description

In order to make the technical problem, technical scheme and beneficial effect that the embodiment of the present invention will solve more clearly understand, the following combines the drawings and embodiment, and goes forward the further detailed description of the present invention. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element. In addition, the connection may be for either a fixing function or a circuit connection function.

It is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the embodiments of the present invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be construed as limiting the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of the present invention, "a plurality" means two or more unless specifically limited otherwise.

Example 1:

as shown in fig. 1 and 2, the mine sludge discharge system capable of strong pipeline pressure disclosed in the present embodiment includes: the system comprises at least four stages of outer discharge pumps 5, at least four stages of standby pumps 19, a valve array 22 and a circulating pipeline 3, wherein the outer discharge pumps 5 at all stages are communicated in series, an inlet of a first-stage outer discharge pump in the outer discharge pumps 5 is communicated with an outlet of a buffer tank 1, and an outlet of a last-stage outer discharge pump in the outer discharge pumps 5 is communicated with a sludge discharge warehouse 12 through an outer discharge pipeline 11; each stage of the standby pumps 19 are communicated in series, an inlet of a first stage of the standby pumps 19 is communicated with an outlet of the buffer tank 1, and an outlet of a last stage of the standby pumps 19 is communicated with the outer discharge pipeline 11; the standby pump 19 and the external discharge pump 5 are communicated in parallel; the outlet of the buffer tank 1 is preferably arranged at the bottom of the tank, and is divided into two parts by adopting a three-way joint, and the two parts are respectively connected with the inlet of the first-stage efflux pump and the inlet of the first-stage standby pump; the valve array 22 is arranged between pipelines in parallel connection of the external discharge pump 5 and the standby pump 19, four external interfaces 25 are arranged on the valve array 22 and respectively are an external interface A, an external interface B, an external interface C and an external interface D, an outlet of the first-stage external discharge pump is communicated with the external interface A of the valve array, and an inlet of the second-stage external discharge pump is communicated with the external interface C of the valve array; the outlet of the first-stage backup pump and the inlet of the second-stage backup pump are simultaneously communicated with the external interface B of the valve array 22 through a tee joint; one end of the circulating pipeline 3 is communicated with the external port D of the valve array 22, the other end of the circulating pipeline is communicated with the side wall of the buffer tank 1, the circulating pipeline 3 is provided with a flow regulating valve 2 for regulating the flow of the slurry circulating stirring, and a back pressure valve 4 can be arranged for balancing the pressure in the circulating pipeline, so that the insufficient pressure of the inlet of a second-stage external discharge pump or a second-stage standby pump is avoided; after the slurry comes out from the outlet of the buffer tank 1, the slurry enters a first-stage outward-discharging pump or a first-stage standby pump for pressurization, one part of the slurry enters a next-stage pump for continuous conveying, and the other part of the slurry returns to the buffer tank 1 along a circulating pipeline 3 for circulating stirring, so that the concentration of the slurry is ensured to be in the optimal range of the working medium requirements of the outward-discharging pump 5 and the standby pump 19; in the initial conveying stage, the slurry is completely circularly stirred through the circulating pipeline 3, and the next stage of pumping is not carried out until the concentration range of the slurry reaches an acceptable value. The valve array 22 comprises 8 stop valves and a distribution pipe 23, the distribution pipe 23 is of a zigzag pipe structure, and four external ports 25 are respectively arranged at four corners of the distribution pipe 23 and are communicated with the distribution pipe 23; the stop valves are respectively arranged on the pipelines at the four external interfaces 25 and the four side pipelines of the distribution pipe 23; the first valve 21 is arranged on an inlet pipeline of the first-stage external discharge pump, the second valve 20 is arranged on an inlet pipeline of the first-stage standby pump, the third valve 6 is arranged on an outlet pipeline of the last-stage external discharge pump, the fourth valve 15 is arranged on an outlet pipeline of the last-stage standby pump, the sixth valve 9, the check valve 10, the pressure sensor 7 and the first flowmeter 8 are respectively arranged on the external discharge pipeline 11, the check valve 10 can prevent slurry in the external discharge pipeline 11 from flowing back, and the pressure sensor 7 and the first flowmeter 8 are used for detecting the pressure and the flow in the external discharge pipeline 11. When the mine is small in sludge discharge amount or needs to be overhauled at ordinary times, only the outer discharge pump 5 or the standby pump 19 needs to be started for use, and when the sludge discharge amount is large, the outer discharge pump 5 and the standby pump 19 can be switched to be used simultaneously, so that the flow can be effectively improved; the combination mode of the external discharge pump 5 and the standby pump 19 can be changed through the valve array 22, for example, the first-stage external discharge pump is communicated with the second-stage standby pump for use, or the first-stage standby pump is communicated with the second-stage external discharge pump for use, so that the flexibility is high, and the reliability and the applicability are improved.

The system also comprises a serial pipe 17, one end of the serial pipe 17 is communicated with a pipeline between the last stage of the external discharge pump and the third valve 6, the other end of the serial pipe 17 is communicated with a pipeline between the first stage of the standby pump and the second valve 20, a seventh valve 18 is arranged on the serial pipe 17, and the serial pipe 17 can connect the external discharge pump 5 and the standby pump 19 in series for use to enhance the pipeline pressure.

As shown in fig. 3, a sludge inlet 35, a dosing port 36 and a water inlet 37 are arranged on the buffer tank 1, the sludge inlet 35 is communicated with the thickening tank 26 through a sludge inlet pipe 38, a sludge adding pump 2901 is arranged on the sludge inlet pipe 38, the dosing port 36 is communicated with the dosing tank 27 through a dosing pipe 39, a dosing pump 2902 is arranged on the dosing pipe 39, the water inlet 37 is communicated with the tap water tank 28 through a water inlet pipe 30, and a water adding pump 2903 is arranged on the water inlet pipe 30; the mud inlet pipe 38, the chemical feeding pipe 39 and the water inlet pipe 30 are respectively provided with a second flowmeter 40, a third flowmeter 41 and a fourth flowmeter 31 for automatically adding mud, chemical liquid and tap water according to the flow proportion to adjust the mud concentration in the buffer tank 1. The buffer tank 1 is provided with a liquid level sensor 42 and a slurry concentration measuring instrument 43 which are used for detecting the level and the concentration of the slurry in the buffer tank 1; the buffer tank 1 can be automatically adjusted, the concentration of slurry is always kept in a stable range, all stages of pumps can run in the best state, and the running condition is stable.

As shown in fig. 4, bypass pipes 47 are connected in parallel to the outer pumps 5 and the backup pumps 19 at each stage, an eighth valve 48 is arranged on each bypass pipe 47, ninth valves 49 are respectively arranged on the pipes connected in series to the outer pumps 5 and the backup pumps 19 at each stage, and the number of the pumps connected in series or in parallel can be disconnected through the bypass pipes 47 for scheduling, so that the pipe pressure, the lift and the flow rate are improved, the reliability, the flexibility and the applicability are improved, and the energy consumption is reduced.

As shown in fig. 6, the system further comprises a group control unit, the group control unit is provided with a signal acquisition end 51, a controller 50 and a control output end 52, the signal acquisition end 51 is electrically connected with the pressure sensor 7, the first flowmeter 8, the second flowmeter 40, the third flowmeter 41, the fourth flowmeter 31, the liquid level sensor 42 and the mud concentration measuring instrument 43 through wires or wireless, and is used for acquiring running state parameter signals of the mine sludge discharge system and transmitting the running state parameter signals to the controller 50 for operation processing; the control output end 52 is electrically connected with the outer discharge pump 5, the backup pump 19, the mud adding pump 2901, the chemical adding pump 2902, the water adding pump 2903, the valve array 22, the flow regulating valve 2, the first valve 21, the second valve 20, the third valve 6, the fourth valve 15, the sixth valve 9, the seventh valve 18, the eighth valve 48 and the ninth valve 49, and is used for receiving and executing the operation result of the controller so as to control the working mode of the mine mud discharging system; the external discharge pump 5, the standby pump 19, the mud feeding pump 2901, the medicine feeding pump 2902 and the water feeding pump 2903 are controlled by frequency conversion, so that the control output end is firstly connected to the control signal end of the frequency converter 53, and then the frequency converter 53 controls the operation of the external discharge pump 5, the standby pump 19, the mud feeding pump 2901, the medicine feeding pump 2902 and the water feeding pump 2903; the controller 50 adopts a PLC controller, and the valve control of the first valve 21, the second valve 20, the third valve 6, the fourth valve 15, the sixth valve 9, the seventh valve 18, the eighth valve 48 and the ninth valve 49 adopts automatic control, and can be electromagnetic control, pneumatic control and the like; the valve type is an on-off valve which can be a butterfly valve, a gate valve and other stop valves.

The utility model discloses a mine mud discharging system mode of operation includes:

before the mud discharge is started, the mud adding pump 2901, the medicine adding pump 2902 and the water adding pump 2903 respectively pump the mud, the liquid medicine and the water in the thickening tank 26, the medicine adding tank 27 and the tap water tank 28 into the buffer tank 1 according to the proportion, the first valve 21 or the second valve 20 at the outlet of the buffer tank 1 is opened, the first-stage discharge pump or the first-stage standby pump is started, and the mud is continuously and circularly stirred through the circulating pipeline 3 until the mud concentration measuring instrument 43 detects that the mud concentration meets the requirement; the third valve 6 or the fourth valve 15 and the sixth valve 9 are opened, the next-stage external discharge pump or the standby pump starts to convey the slurry to the sludge discharge warehouse 12, the pressure sensor 7 and the first flowmeter 8 on the external discharge pipeline 11 detect the pressure and flow in the pipeline in real time and feed back the pressure and flow to the controller 50 for operation processing, and a control signal is sent to the control output end; when the external discharge pump 5 and the backup pump 19 are used in parallel, the first valve 21, the second valve 20, the third valve 6, the fourth valve 15, and the sixth valve 9 are all opened, and the external discharge pump 5 and the backup pump 19 are all started.

When the external discharge pump 5 and the backup pump 19 are used in series, the second valve 20 and the third valve 6 are closed, the first valve 21, the fourth valve 15, the sixth valve 9 and the seventh valve 18 are opened, and the external discharge pump 5 and the backup pump 19 are all started, so that the pressure in the external discharge pipeline 11 can be effectively increased, and the lift is increased.

When the number of the used outer discharge pumps 5 or the used backup pumps 19 needs to be adjusted, the bypass pipe 47 and the eighth valve 48 on the corresponding outer discharge pump 5 or the corresponding backup pump 19 are opened, and the front and rear ninth valves 49 are closed.

When the back flushing of the external discharge pump 5 or the spare pump 19 is needed, the first valve 21 or the second valve 20 is opened, the third valve 6 and the fourth valve 15 are opened, and the sixth valve 9 is closed; when the outer discharge pump 5 is backwashed, a first stop valve 2401, a fourth stop valve 2404 and a sixth stop valve 2406 on the valve array 22 are opened, a second stop valve 2402 and a seventh stop valve 2407 are closed, a third stop valve 2403, a fifth stop valve 2405 and an eighth stop valve 2408 are opened, so that an interface A is communicated with an external interface B, an interface C is communicated with an external interface D, and the first-stage outer discharge pump starts to pump clean water in the buffer tank 1 for backwashing; similarly, when the standby 19 is backwashed, the interface A is communicated with the external interface C, and the interface B is communicated with the external interface D.

Example 2:

in order to increase the safety of the mine sludge discharge system and avoid the occurrence of slurry leakage and environmental pollution caused by equipment and pipeline failure damage, in this embodiment, an emergency pipe 13 and an emergency pool 16 are added on the basis of embodiment 1, as shown in fig. 1, one end of the emergency pipe 13 is simultaneously communicated with an outlet pipeline and an outer discharge pipeline 11 of a last-stage outer discharge pump, the other end of the emergency pipe is communicated with the emergency pool 16, a fifth valve 14 is arranged on the emergency pipe 13, the outlet pipeline of the last-stage backup pump is communicated with the emergency pipe 13, the fifth valve 14 is driven by adopting automatic control and is connected with a control output end 52, if the system fails, the fifth valve 14 can be opened, slurry is discharged into the emergency pool 16, and the environmental pollution is effectively avoided.

Example 3:

in order to make the slurry in the buffer tank 1 more uniform, the present embodiment adds a stirring device on the basis of embodiment 1; as shown in fig. 3, agitating unit includes agitator motor 32, (mixing) shaft 33 and stirring paddle leaf 34, agitator motor 32 establishes at buffer tank 1 top, and be connected with control output 52 electricity, (mixing) shaft 33 one end and agitator motor 32's output shaft, inside the other end stretches into buffer tank 1, stirring paddle leaf 34 establishes on (mixing) shaft 33, stir through setting up agitating unit, the cooperation circulation stirring makes mud more even, avoid influencing the operating mode stability of each level of pump because of mud concentration, ensure that the pump can the full load operation.

Example 4:

in order to avoid the damage of the sludge discharge pump 5 or the standby pump 19 caused by cavitation and influence on the pipeline pressure; in the embodiment, a cooling design is added on the side wall of the buffer tank 1 on the basis of the embodiment 1; as shown in fig. 5, the tank wall of the buffer tank 1 is provided with an interlayer, a honeycomb layer 44 is arranged in the interlayer, the bottom of the interlayer is provided with a cooling water inlet 45, the top of the interlayer is provided with a cooling water outlet 46, and the cooling water inlet 45 and the cooling water outlet 46 are respectively communicated with the water outlet and the water return of the cooling water tower, so as to cool the slurry in the buffer tank 1, reduce the temperature of the slurry, reduce the occurrence of cavitation, enable the system to operate more stably and enable the pipeline pressure to be higher.

The background section of the present invention may contain background information related to the problems or the environment of the present invention and is not necessarily descriptive of the prior art. Accordingly, the inclusion in this background section is not an admission by the applicant that prior art is available.

The foregoing is a more detailed description of the present invention, taken in conjunction with the specific/preferred embodiments thereof, and it is not intended that the invention be limited to the specific embodiments shown and described. For those skilled in the art to which the invention pertains, a plurality of alternatives or modifications can be made to the described embodiments without departing from the concept of the invention, and these alternatives or modifications should be considered as belonging to the protection scope of the invention. In the description herein, references to the description of the term "one embodiment," "some embodiments," "preferred embodiments," "an example," "a specific example" or "some examples" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Various embodiments or examples and features of various embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction. Although the embodiments of the present invention and their advantages have been described in detail, it should be understood that various changes, substitutions and alterations can be made herein without departing from the scope of the claims.

Claims (10)

1. A mine sludge discharge system capable of enhancing pipeline pressure, comprising:

the system comprises at least four stages of external discharge pumps, wherein the external discharge pumps at all stages are connected in series and communicated, the inlet of the first stage of external discharge pump in the external discharge pumps is communicated with the outlet of a buffer tank, and the outlet of the last stage of external discharge pump in the external discharge pumps is communicated with a sludge discharge warehouse through an external discharge pipeline;

at least four stages of standby pumps, wherein each stage of standby pump is communicated in series, the inlet of the first stage of standby pump in the standby pumps is communicated with the outlet of the buffer tank, and the outlet of the last stage of standby pump in the standby pumps is communicated with the discharge pipeline, so that the standby pumps are communicated with the discharge pump in parallel;

the valve array is provided with four external interfaces, the outlet of the first-stage external discharge pump is communicated with the external interface A of the valve array, and the inlet of the second-stage external discharge pump is communicated with the external interface C of the valve array; the outlet of the first-stage standby pump and the inlet of the second-stage standby pump are simultaneously communicated with the external port B of the valve array;

and one end of the circulating pipeline is communicated with the D outer port of the valve array, the other end of the circulating pipeline is communicated with the buffer tank, and the circulating pipeline is provided with a flow regulating valve.

2. The mine sludge discharge system of claim 1, wherein: the valve array comprises a stop valve and a distribution pipe, the distribution pipe is of a clip-shaped pipe structure, and four external interfaces are respectively arranged at four corners of the distribution pipe and are communicated with the distribution pipe; the stop valves are respectively arranged on the external interface and the four side pipelines of the distribution pipe; the first-stage standby pump is characterized in that a first valve is arranged on an inlet pipeline of the first-stage outer discharge pump, a second valve is arranged on an inlet pipeline of the first-stage standby pump, a third valve is arranged on an outlet pipeline of the last-stage outer discharge pump, and a fourth valve is arranged on an outlet pipeline of the last-stage standby pump.

3. The mine sludge discharge system of claim 2, wherein: the emergency pipe is characterized by further comprising an emergency pipe, one end of the emergency pipe is communicated with the outlet of the last-stage external discharge pump and the external discharge pipeline at the same time, the other end of the emergency pipe is communicated with the emergency pool, a fifth valve is arranged on the emergency pipe, the outlet pipeline of the last-stage standby pump is communicated to the emergency pipe, and a sixth valve, a check valve, a pressure sensor and a first flowmeter are arranged on the external discharge pipeline respectively.

4. The mine spoil disposal system of claim 3, wherein: the system also comprises a serial connection pipe, one end of the serial connection pipe is communicated with a pipeline between the last stage of external discharge pump and the third valve, the other end of the serial connection pipe is communicated with a pipeline between the first stage of standby pump and the second valve, and a seventh valve is arranged on the serial connection pipe.

5. The mine sludge discharge system of claim 4, wherein: the stirring device is characterized in that a stirring device is arranged on the buffer tank and comprises a stirring motor, a stirring shaft and stirring blades, the stirring motor is arranged at the top of the buffer tank, one end of the stirring shaft is connected with an output shaft of the stirring motor, the other end of the stirring shaft extends into the buffer tank, and the stirring blades are arranged on the stirring shaft.

6. The mine sludge discharge system of claim 5, wherein: the buffer tank is provided with a sludge inlet, a dosing port and a water inlet, the sludge inlet is communicated with the thickening tank through a sludge inlet pipe, the dosing port is communicated with the dosing tank through a dosing pipe, and the water inlet is communicated with a tap water tank through a water inlet pipe; and a second flowmeter, a third flowmeter and a fourth flowmeter are respectively arranged on the mud inlet pipe, the dosing pipe and the water inlet pipe.

7. The mine sludge discharge system of claim 6, wherein: and the buffer tank is provided with a liquid level sensor and a slurry concentration measuring instrument and is used for detecting the material level and the concentration of the slurry in the buffer tank.

8. The mine mud drainage system of claim 7, wherein: the tank wall of the buffer tank is provided with an interlayer, a honeycomb layer is arranged in the interlayer, the bottom of the interlayer is provided with a cooling water inlet, and the top of the interlayer is provided with a cooling water outlet.

9. The mine sludge discharge system of claim 8, wherein: and the pipelines in series connection with the external discharge pump and the standby pump at each stage are respectively provided with a ninth valve.

10. The mine mud drainage system of claim 9, wherein: the mine sludge discharge system is characterized by further comprising a group control unit, wherein the group control unit is provided with a signal acquisition end, a controller and a control output end, and the signal acquisition end is electrically connected with the pressure sensor, the first flowmeter, the second flowmeter, the third flowmeter, the fourth flowmeter, the liquid level sensor and the slurry concentration measuring instrument in a wired or wireless mode and is used for acquiring running state parameter signals of the mine sludge discharge system and transmitting the running state parameter signals to the controller for operation processing; the control output end is electrically connected with the outer discharge pump, the backup pump, the valve array, the flow regulating valve, the first valve, the second valve, the third valve, the fourth valve, the fifth valve, the sixth valve, the seventh valve, the eighth valve and the ninth valve, and is used for receiving and executing the operation result of the controller so as to control the working mode of the mine sludge discharge system.

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