CN217129827U - Slurry feeding mechanism of centrifugal pump - Google Patents

Abstract

The utility model relates to the technical field of centrifugal pumps, and provides a centrifugal pump slurry feeding mechanism aiming at the problems of poor slurry feeding effect and short service cycle of a pipeline and a pipe fitting which are arranged in a centrifugal pump in the existing mineral separation water return pond and are used for feeding slurry, which comprises a centrifugal pump body and a slurry feeding component arranged at the slurry feeding end of the centrifugal pump body; the slurry inlet component comprises a water storage tank and an emptying pipeline, the water storage tank is communicated with the centrifugal pump body through a slurry inlet pipeline, a first end of the emptying pipeline is communicated with the top of the water storage tank, and a second end of the emptying pipeline is communicated with the water return pool; and an emptying valve is arranged at the top of the water storage tank. The water storage tank is additionally arranged between the slurry inlet end of the centrifugal pump body and the water pool, so that the centrifugal pump body can be directly and fully filled with water, air in the emptying pipeline is gradually replaced until the slurry inlet pipeline and the water storage tank are vacuumized, then slurry can be effectively conveyed in time, and the cavitation phenomenon can be effectively avoided.

Description

Slurry feeding mechanism of centrifugal pump

Technical Field

The utility model relates to a centrifugal pump technical field particularly, relates to a centrifugal pump advances thick liquid mechanism.

Background

Centrifugal pumps are pumps that transport liquids by centrifugal force generated when an impeller rotates, and centrifugal pumps can be classified into a plurality of types according to different classification criteria, such as: the pump can be divided into a single-stage pump and a multi-stage pump according to the number of impellers, and can be divided into a horizontal pump and a vertical pump according to the position of a pump shaft. Centrifugal pumps are often used in the industries of electric power, metallurgy, coal and the like to convey slurry containing solid particles, horizontal single-stage centrifugal pumps are often used in a mineral separation water return pool of a concentrating mill, and pipelines and pipe fittings such as a bottom valve, a suction pipeline, an outlet valve, an outlet pipeline and the like need to be configured in order to enable the centrifugal pumps to work normally.

The centrifugal pump provided with the piping and the pipe fitting such as the bottom valve is generally used in the following problems: in order to prevent cavitation, liquid media are required to be filled in the pump body and the inlet pipeline before the pump body and the inlet pipeline are used, the actual operation is difficult, and the effect of complete filling is difficult to achieve, so that the problems of heating and vibration of the pump body and reduction of liquid output caused by residual air are easily caused; in addition, the bottom valve is configured to enable the water inlet pipeline to store water for a long time, so that the pump body and the pipeline of the centrifugal pump form vacuum, but the bottom valve is soaked in water for a long time, the bottom valve is easy to leak due to corrosion, impurity adhesion and the like, and further the problems that the inlet pipeline and the pump body cannot be filled with water when the pipeline is filled, and water cannot be supplied in time when the pump is started are caused.

Therefore, a centrifugal pump slurry inlet mechanism with a better slurry inlet effect is urgently needed.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the problem that the entering of centrifugal pump configuration advances the pipeline and the pipe fitting of thick liquid usefulness and advances thick liquid effect difference, life cycle weak point in ore dressing return water pond at present. The application provides a centrifugal pump advances thick liquid mechanism, advances at the centrifugal pump body and installs the water storage tank additional between thick liquid end and the pond, can directly irritate into water earlier with the centrifugal pump body fully, progressively replace the air in the evacuation pipeline again, until advancing thick liquid pipeline and water storage tank and forming the vacuum, later can in time carry thick liquid effectively, can effectively avoid the cavitation phenomenon.

The utility model discloses a following technical scheme realizes:

a centrifugal pump slurry inlet mechanism comprises a centrifugal pump body and a slurry inlet assembly arranged at a slurry inlet end of the centrifugal pump body; the slurry inlet component comprises a water storage tank and an emptying pipeline, the water storage tank is communicated with the centrifugal pump body through a slurry inlet pipeline, a first end of the emptying pipeline is communicated with the top of the water storage tank, and a second end of the emptying pipeline is communicated with the water return pool; and an emptying valve is arranged at the top of the water storage tank.

Preferably, the second end of evacuation pipeline stretches into in the return water pond, the return water pond is located the water storage tank bottom makes the liquid level is less than in the return water pond the liquid level.

Preferably, the water storage tank is provided with a control assembly, the control assembly comprises a control module and a power module, the control module is respectively electrically connected with the emptying valve and the power module, and the power module is electrically connected with the emptying valve.

Preferably, the inside top of water storage tank disposes the manometer, the manometer electricity is connected with signal processor, signal processor with control module electricity is connected, power module respectively with the manometer the signal processor electricity is connected.

Preferably, the water storage tank is further provided with a water injection valve and an overflow port valve, and the water injection valve is respectively electrically connected with the control module and the power module.

Preferably, the tank side wall of the water storage tank is embedded with a transparent observation window, and the position of the side wall surface of the water storage tank, which is close to the transparent observation window, is provided with a liquid level meter.

Preferably, a cleaning pipeline is arranged at the top of the water storage tank, and a sewage discharge pipeline is arranged at the bottom of the water storage tank.

Preferably, the slurry inlet pipeline comprises a plurality of sections of pipelines which are communicated with each other through flexible joints.

The technical scheme of the utility model following beneficial effect has:

(1) the water storage tank is additionally arranged between the slurry inlet end of the centrifugal pump body and the water pool, so that the centrifugal pump body can be directly and fully filled with water, air in the emptying pipeline is gradually replaced until the slurry inlet pipeline and the water storage tank are vacuumized, then slurry can be effectively conveyed in time, and the cavitation phenomenon can be effectively avoided.

(2) The utility model discloses a centrifugal pump advances thick liquid mechanism simple structure, prevents that cavitation erosion is effectual, and actual maneuverability is strong, effectively solves the problem that the cavitation erosion prevention effect that anti-cavitation erosion pipe fitting exists is poor, the durability is poor in the current centrifugal pump.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 is a schematic structural view of a slurry inlet mechanism of a centrifugal pump in embodiment 1;

fig. 2 is a circuit diagram of the control module in embodiment 1.

An icon: 1-centrifugal pump body, 2-water storage tank, 21-emptying valve, 22-pressure gauge, 23-water injection valve, 24-overflow port valve, 25-transparent observation window, 26-cleaning pipeline, 27-sewage discharge pipeline, 3-emptying pipeline, 4-slurry inlet pipeline, 41-flexible joint, 51-control module, 52-power module, 53-signal processor and 6-water return pool.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

Example 1

As shown in fig. 1 and fig. 2, the present embodiment provides a centrifugal pump slurry inlet mechanism, which includes a centrifugal pump body 1, and a slurry inlet assembly disposed at a slurry inlet end of the centrifugal pump body 1; the slurry inlet component comprises a water storage tank 2 and an emptying pipeline 3, the water storage tank 2 is communicated with the centrifugal pump body 1 through a slurry inlet pipeline 4, the first end of the emptying pipeline 3 is communicated with the top of the water storage tank 2, and the second end of the emptying pipeline 3 is communicated with a water return pool 6; the slurry inlet pipeline 4 comprises a plurality of sections of pipelines which are communicated through flexible joints 41; the top of the water storage tank 2 is provided with an emptying valve 21, and water injection and air exhaust are accelerated through automatic gas-liquid separation, so that the water injection and air exhaust functions can be achieved. The water storage tank 2 is additionally arranged between the pulp inlet end of the centrifugal pump body 1 and the water pool, the centrifugal pump body can be directly and fully filled with water, air in the emptying pipeline 3 is gradually replaced until the pulp inlet pipeline 4 and the water storage tank 2 form vacuum, then pulp can be effectively conveyed in time, and the cavitation phenomenon can be effectively avoided

In this embodiment, the second end of evacuation pipeline 3 stretches into in return water tank 6, return water tank 6 is located 2 bottoms of tank for the liquid level is less than the liquid level in the tank 2 in the return water tank 6, the liquid level difference of 3 water inlets of evacuation pipeline and delivery port can decide the reservoir capacity of tank 2, when the centrifugal pump body 1 starts to rated tube bank, form the difference in height between the liquid level in the tank 2 and the 1 inlet of the centrifugal pump body, the minimum difference in height can produce the biggest negative pressure, make the centrifugal pump body 1 normally work under the condition of limit difference in height.

In this embodiment, the water storage tank 2 is configured with a control assembly, the control assembly includes a control module 51 and a power module 52, the control module 51 is electrically connected to the evacuation valve 21 and the power module 52, respectively, and the power module 52 is electrically connected to the evacuation valve 21.

In the embodiment, the pressure gauge 22 is arranged at the inner top of the water storage tank 2, so that the pressure fluctuation change in the tank can be observed conveniently; the pressure gauge 22 is electrically connected with a signal processor 53, the signal processor 53 is electrically connected with the control module 51, and the power supply module 52 is respectively electrically connected with the pressure gauge 22 and the signal processor 53.

In this embodiment, the water storage tank 2 is further provided with a water injection valve 23 and an overflow valve 24, the water injection valve 23 is electrically connected to the control module 51 and the power module 52, respectively, the water injection valve 23 is used for injecting water into the water storage tank 2, and when the water injection liquid level exceeds a set value or the pressure is too large, the overflow valve 24 is opened to ensure the normal operation of the slurry inlet mechanism.

In this embodiment, the control module 51 is a controller, and may be a single chip microcomputer (for example, 8051 series single chip microcomputers, STM32 series single chip microcomputers), an FPGA programmable controller, or the like; the power module 52 is a power supply, and can select a common centrifugal pump power supply; the valves such as the evacuation valve 21 and the water injection valve 23 are all electromagnetic valves so as to control the opening and closing of the valves through a controller

In this embodiment, a transparent observation window 25 is embedded in the tank side wall of the water storage tank 2, and a level meter is disposed at a position on the side wall surface of the water storage tank 2 near the transparent observation window 25.

In this embodiment, the top of the water storage tank 2 is provided with a cleaning pipeline 26, and the bottom of the water storage tank 2 is provided with a sewage discharge pipeline 27 for periodically discharging the sewage in the tank or cleaning the scale in the water storage tank 2, thereby avoiding the problems of pipeline blockage and the like.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (8)

1. A centrifugal pump slurry inlet mechanism is characterized by comprising a centrifugal pump body (1) and a slurry inlet assembly arranged at the slurry inlet end of the centrifugal pump body (1);

the slurry inlet component comprises a water storage tank (2) and an emptying pipeline (3), the water storage tank (2) is communicated with the centrifugal pump body (1) through a slurry inlet pipeline (4), the first end of the emptying pipeline (3) is communicated with the top of the water storage tank (2), and the second end of the emptying pipeline (3) is communicated with a water return pool (6); an emptying valve (21) is arranged at the top of the water storage tank (2).

2. A centrifugal pump slurry inlet mechanism according to claim 1, wherein the second end of the emptying pipe (3) extends into the water return tank (6), and the water return tank (6) is located at the bottom of the water storage tank (2), so that the liquid level in the water return tank (6) is lower than the liquid level in the water storage tank (2).

3. A centrifugal pump slurry inlet mechanism according to claim 1 or 2, wherein the water storage tank (2) is provided with a control assembly comprising a control module (51) and a power module (52), the control module (51) being electrically connected with the emptying valve (21) and the power module (52), respectively, the power module (52) being electrically connected with the emptying valve (21).

4. A centrifugal pump slurry inlet mechanism according to claim 3, wherein a pressure gauge (22) is arranged at the inner top of the water storage tank (2), the pressure gauge (22) is electrically connected with a signal processor (53), the signal processor (53) is electrically connected with the control module (51), and the power supply module (52) is electrically connected with the pressure gauge (22) and the signal processor (53) respectively.

5. A centrifugal pump slurry inlet mechanism according to claim 4, wherein the water storage tank (2) is further provided with a water injection valve (23) and an overflow port valve (24), and the water injection valve (23) is electrically connected with the control module (51) and the power supply module (52), respectively.

6. The centrifugal pump slurry inlet mechanism according to claim 1, wherein a transparent observation window (25) is embedded in the side wall of the water storage tank (2), and a liquid level meter is arranged on the side wall surface of the water storage tank (2) close to the transparent observation window (25).

7. A centrifugal pump slurry inlet mechanism according to claim 1, characterized in that a cleaning pipeline (26) is arranged at the top of the water storage tank (2), and a sewage drainage pipeline (27) is arranged at the bottom of the water storage tank (2).

8. A centrifugal pump slurry inlet mechanism according to claim 1, wherein the slurry inlet pipeline (4) comprises a plurality of sections of pipelines which are communicated with each other through flexible joints (41).

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