Slurry pump constant discharging system beneficial to stability of flotation liquid level

Abstract

The utility model discloses a slurry pump constant discharging system beneficial to flotation liquid level stabilization. The slurry pump constant discharging system at least comprises but not limited to a feeding pipeline, a storage pool, a discharging pipeline, a flotation tank and a PID arithmetic unit. The feeding pipeline is connected with the material storage pool, the material storage pool is connected with the flotation tank through the discharging pipeline, a backflow pipeline is further arranged between the discharging pipeline and the material storage pool, the material storage pool is further connected with an auxiliary pipeline, the auxiliary pipeline is connected with an external water source, and the discharging pipeline and the feeding pipeline are provided with detection assemblies. The acquisition end of the PID arithmetic unit is connected with the detection assembly, and the control end of the PID arithmetic unit is connected with the valves on the return pipeline and the auxiliary pipeline; by means of the scheme, dynamic balance of the discharging flow and the feeding flow can be achieved, and the series of problems that due to the fact that a traditional swing type ore feeder is uneven in feeding, metering errors are large are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of ore dressing, particularly to a slag slurry pump constant discharging system which is beneficial to the stability of the flotation liquid level. BACKGROUND

[0002] Flotation is an important method of mineral separation. After the useful minerals and waste rocks are separated and meet the suitable particle size of the flotation equipment, the ore is adjusted to a certain concentration of slurry, which is fully mixed with flotation reagents in the agitation tank and then sent to the flotation machine. Through the air suction and agitation of the flotation machine, the target minerals adhere to the bubbles and move upward to form a mineralized froth layer on the surface of the slurry. The froth layer is scraped out by the scraper to become the froth product (concentrate), while the non-froth product is discharged from the tank bottom.

[0003] In the production of ore dressing in mines, in order to ensure the normal operation of flotation, the flotation liquid level is usually controlled within a reasonable range to ensure that the scraper can scrape out the mineralized froth layer. If the flotation liquid level is too high, the slurry and the mineralized froth layer will be scraped out together, resulting in "run-off" phenomenon. If the flotation liquid level is too low, the mineralized froth layer cannot be scraped out, resulting in "sink" phenomenon. Both "run-off" and "sink" phenomena will disrupt the flotation process and cause the quality and recovery rate of mineral products to decrease.

[0004] In the traditional flotation liquid level control method, the discharge valve of the flotation tank is often manually adjusted to control the height of the flotation liquid level. This method often has problems such as untimely adjustment and high labor intensity. In recent years, with the development of intelligent mine production technology, an automatic liquid level control system has been integrated into the flotation machine, which has preliminarily realized the automatic control of the liquid level of the flotation machine. Intelligent flotation liquid level control is usually achieved by comparing the detected flotation liquid level height with the standard value and controlling the opening and closing of the tailings valve of the flotation tank through the operator. The biggest problem of this automatic liquid level control technology is that it does not solve the stability problem of the flotation feed slurry, which makes the automatic control valve open and close frequently, causing the service life of the valve to be shortened. UTILITY MODEL CONTENTS

[0005] The utility model aims at the above-mentioned shortcomings and provides a slag slurry pump constant discharging system which is beneficial to the stability of the flotation liquid level. It solves the problems of untimely adjustment, high labor intensity, and the stability problem of the flotation feed slurry in the automatic liquid level control technology, which causes the automatic control valve to open and close frequently and the service life of the valve to be shortened.

[0006] The utility model is realized by the following scheme:

[0007] A slag slurry pump constant discharge system for stabilizing the flotation liquid level, at least including but not limited to a feed pipeline, a storage tank, a discharge pipeline, a flotation tank and a PID operator; the feed pipeline is connected with the storage tank, the storage tank is connected with the flotation tank through the discharge pipeline, a reflux pipeline is further arranged between the discharge pipeline and the storage tank, an auxiliary pipeline is further connected to the storage tank, the auxiliary pipeline is connected with an external water source, detection assemblies are arranged on the discharge pipeline and the feed pipeline, the collection end of the PID operator is connected with the detection assemblies, and the control end of the PID operator is connected with valves on the reflux pipeline and the auxiliary pipeline.

[0008] Based on the structure of the above-mentioned slag slurry pump constant discharge system for stabilizing the flotation liquid level, the reflux pipeline comprises a back slurry flow meter and a first electric valve, and the back slurry flow meter and the first electric valve are sequentially arranged along the liquid flow direction.

[0009] Based on the structure of the above-mentioned slag slurry pump constant discharge system for stabilizing the flotation liquid level, the auxiliary pipeline comprises a water inlet flow meter and a second electric valve, and the water inlet flow meter and the second electric valve are sequentially arranged along the liquid flow direction.

[0010] Based on the structure of the above-mentioned slag slurry pump constant discharge system for stabilizing the flotation liquid level, a feed ore slurry flow meter is arranged on the feed pipeline, and the feed ore slurry flow meter is connected with the collection end of the PID operator through a cable.

[0011] Based on the structure of the above-mentioned slag slurry pump constant discharge system for stabilizing the flotation liquid level, a discharge ore slurry flow meter is arranged on the discharge pipeline, and the discharge ore slurry flow meter is connected with the collection end of the PID operator through a cable.

[0012] Based on the structure of the above-mentioned slag slurry pump constant discharge system for stabilizing the flotation liquid level, a slag slurry pump can be further arranged on the discharge pipeline, and the slag slurry pump is connected with the control end of the PID operator through a cable.

[0013] Based on the structure of the above-mentioned slag slurry pump constant discharge system for stabilizing the flotation liquid level, the slag slurry pump is a variable frequency pump, and the PID operator can control the working frequency of the slag slurry pump.

[0014] Based on the structure of the above-mentioned slag slurry pump constant discharge system for stabilizing the flotation liquid level, the collection end of the PID operator is connected with the back slurry flow meter, the water inlet flow meter, the feed ore slurry flow meter and the discharge ore slurry flow meter.

[0015] Based on the structure of the above-mentioned slag slurry pump constant discharge system for stabilizing the flotation liquid level, the control end of the PID operator is connected with the first electric valve, the second electric valve and the slag slurry pump.

[0016] Based on the structure of the slag slurry pump constant discharge system that is conducive to the stability of the flotation liquid level, the second electric valve is a high-pressure water electric valve.

[0017] In summary, due to the adoption of the technical scheme, the beneficial effects of the present application are:

[0018] 1、In the scheme, the detection assembly can detect the flow of the ore slurry from the upstream into the storage pool and the flow of the ore slurry from the discharge pipeline into the flotation tank; the PID operator collects two data, when the upstream ore slurry flow Q1 decreases to cause the fluctuation of the discharge pipeline flow Q2, the PID operator controls the auxiliary pipeline to open for water replenishment operation, at this time the reflux pipeline is in a short circuit state, until the discharge flow value of the discharge pipeline reaches the running standard value; when the upstream ore slurry flow Q1 increases to cause the fluctuation of the discharge pipeline flow Q2, the PID operator controls the reflux pipeline to open for reflux operation, at this time the auxiliary pipeline is closed, until the discharge flow value of the discharge pipeline reaches the running standard value, through the scheme, the dynamic balance of the discharge flow and the feed flow can be realized, and the problem of large fluctuation of the flotation liquid level caused by unstable flotation ore slurry feeding is solved. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a schematic diagram of the whole structure of the present application;

[0020] BRIEF DESCRIPTION OF DRAWINGS: 1, feed pipeline; 2, storage pool; 3, discharge pipeline; 4, flotation tank; 5, PID operator; 6, reflux pipeline; 7, auxiliary pipeline; 11, feed ore slurry flowmeter; 31, discharge ore slurry flowmeter; 32, slag slurry pump; 61, back slurry flowmeter; 62, first electric valve; 71, water inflow meter; 72, second electric valve. DETAILED DESCRIPTION

[0021] All features disclosed in this specification, and / or all steps of any methods disclosed in this specification, can be combined in any combination, except combinations where at least some of such features and / or steps are mutually exclusive.

[0022] Any feature disclosed in this specification, unless stated otherwise, can be replaced by any equivalent or similar feature. That is, unless stated otherwise, each feature disclosed is one example only of a generic series of equivalent or similar features.

[0023] In the description of the utility model, it is understood that the terms "upper", "lower", "left", "right" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.

[0024] In addition, the terms "first", "second", and the like are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined with "first", "second", etc. can explicitly or implicitly include one or more of the features.

[0025] Embodiment 1

[0026] As Figure 1 The utility model provides a technical scheme:

[0027] A kind of slurry pump 32 constant discharge system of being beneficial to float liquid level stability, it at least includes but is not limited to feed pipe 1, storage pool 2, discharge pipe 3, flotation tank 4 and PID operator 5;Feed pipe 1 is connected with storage pool 2, storage pool 2 is connected with flotation tank 4 by discharge pipe 3, backflow pipe 6 is also provided between discharge pipe 3 and storage pool 2, auxiliary pipe 7 is also connected on storage pool 2, auxiliary pipe 7 is connected with external water source, detection assembly is provided on discharge pipe 3 and feed pipe 1, the acquisition end of PID operator 5 is connected with detection assembly, and the control end of PID operator 5 is connected with valve on backflow pipe 6 and auxiliary pipe 7.

[0028] Based on the above structure, in the present scheme, the flow of the ore slurry from the upstream into the storage pool 2 and the flow of the ore slurry from the discharge pipe 3 into the flotation tank 4 can be detected by the detection assembly. When the upstream ore slurry flow Q1 decreases and causes the discharge pipe 3 flow Q2 to fluctuate, the PID operator 5 controls the auxiliary pipe 7 to open for water replenishment operation. At this time, the backflow pipe 6 is in a short-circuit state until the discharge flow value of the discharge pipe 3 reaches the operating standard value. The operating standard value is the average value within a certain time when the system is normally operating. When the upstream ore slurry flow Q1 increases and causes the discharge pipe 3 flow Q2 to fluctuate, the PID operator 5 controls the backflow pipe 6 to open for backflow operation. At this time, the auxiliary pipe 7 is closed until the discharge flow value of the discharge pipe 3 reaches the operating standard value. Through the present scheme, dynamic balance of the discharge flow and the feed flow can be achieved, and the problem of large fluctuation of the flotation liquid level caused by unstable feeding of the flotation ore slurry is solved.

[0029] As an example, the backflow pipeline 6 can include a backflow flowmeter 61 and a first electric valve 62, which are sequentially arranged along the liquid flow direction.

[0030] Based on the above structure, the backflow flowmeter 61 can measure the flow size of the backflow in the backflow pipeline 6, and the first electric valve 62 provides the backflow pipeline 6 with backflow power. When the upstream self-flowing ore slurry flow Q1 increases to cause the fluctuation of the discharge pipeline 3 flow Q2, the PID operator 5 controls the backflow pipeline 6 to start backflow operation, and the ore slurry is temporarily stored in the storage pool 2 and accurately transported to the flotation tank 4 through the pump body on the discharge pipe.

[0031] As an example, the auxiliary pipeline 7 can include a water inlet flowmeter 71 and a second electric valve 72, which are sequentially arranged along the liquid flow direction.

[0032] Based on the above structure, the water inlet flowmeter 71 can measure the flow size of the water entering the storage pool 2 from the external water source, and the second electric valve 72 provides power for the auxiliary pipeline 7.

[0033] As an example, a feeding ore slurry flowmeter 11 can be arranged on the feeding pipeline 1, which is connected to the collection end of the PID operator 5 through a cable.

[0034] Based on the above structure, the feeding ore slurry flowmeter 11 can detect the ore slurry flow from the upstream and transmit the detected data to the PID operator 5 for internal comparison.

[0035] As an example, a discharge ore slurry flowmeter 31 can be arranged on the discharge pipeline 3, which is connected to the collection end of the PID operator 5 through a cable.

[0036] Based on the above structure, the discharge ore slurry flowmeter 31 can detect the ore slurry flow from the storage pool 2 into the flotation tank 4 and transmit the detected data to the PID operator 5 for internal comparison.

[0037] As an example, a slurry pump 32 is further arranged on the discharge pipeline 3, which is connected to the control end of the PID operator 5 through a cable.

[0038] Based on the above structure, the slurry pump 32 provides power for the discharge pipeline 3, and the PID operator 5 can control the slurry pump 32.

[0039] As an example, the slurry pump 32 is a variable frequency pump, and the PID operator 5 can control the working frequency of the slurry pump 32.

[0040] Based on the above structure, the control of the frequency of the slag slurry pump 32 realizes the control of the flow of the discharge pipeline 3.

[0041] As an example, the sampling end of the PID operator 5 is connected with the back slurry flow meter 61, the water inlet flow meter 71, the feed ore slurry flow meter 11 and the discharge ore slurry flow meter 31 respectively, and the control end of the PID operator 5 is connected with the first electric valve 62, the second electric valve 72 and the slag slurry pump 32 respectively.

[0042] The second electric valve 72 can be a high-pressure water electric valve.

[0043] The principle of the scheme is that the feed amount Q1+ the correction amount q= the discharge amount Q2. In order to ensure that the flotation feed ore slurry is constant, the slag slurry pump 32 discharge control system is innovatively introduced, the automatic controller is used to collect the storage tank, the variable frequency slag slurry pump 32, the feed ore slurry flow meter 11, the discharge ore slurry flow meter 31, the back slurry electric valve and the high-pressure water electric valve into an organic whole, so that the constant discharge ore slurry of the slag slurry pump 32 is realized, and good conditions for the flotation liquid level stability are created.

[0044] The above only describes the preferred embodiments of the present application and is not used to limit the present application, and any modification, equivalent replacement and improvement within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A constant discharge system for a slurry pump that facilitates stable flotation liquid level, characterized in that, At least including but not limited to feed pipe, storage tank, discharge pipe, flotation tank and PID operator; the feed pipe is connected with the storage tank, the storage tank is connected with the flotation tank through the discharge pipe, the backflow pipe is further arranged between the discharge pipe and the storage tank, the auxiliary pipe is further connected on the storage tank, the auxiliary pipe is connected with external water source, the detection assembly is arranged on the discharge pipe and the feed pipe, the collection end of the PID operator is connected with the detection assembly, and the control end of the PID operator is connected with the valve on the backflow pipe and the auxiliary pipe.

2. A constant discharge system for a slurry pump that facilitates stable flotation liquid level as claimed in claim 1, characterized in that: The backflow pipe comprises a backflow flow meter and a first electric valve, and the backflow flow meter and the first electric valve are sequentially arranged along the liquid flow direction.

3. A constant delivery system for a slurry pump that facilitates stable flotation liquid levels as claimed in claim 2, characterized in that: The auxiliary pipe comprises a water inlet flow meter and a second electric valve, and the water inlet flow meter and the second electric valve are sequentially arranged along the liquid flow direction.

4. A constant delivery system for a slurry pump that facilitates stable flotation liquid levels as claimed in claim 3, characterized in that: The feed pipe is provided with a feed ore pulp flow meter, and the feed ore pulp flow meter is connected with the collection end of the PID operator through a cable.

5. A constant delivery system for a slurry pump that facilitates stable flotation liquid levels as claimed in claim 4, wherein: The discharge pipe is provided with a discharge ore pulp flow meter, and the discharge ore pulp flow meter is connected with the collection end of the PID operator through a cable.

6. A constant delivery system for a slurry pump that facilitates stable flotation liquid levels as claimed in claim 5, characterized in that: The discharge pipe can be further provided with a slurry pump, and the slurry pump is connected with the control end of the PID operator through a cable.

7. A constant delivery system for a slurry pump that facilitates stable flotation liquid levels as claimed in claim 6, characterized in that: The slurry pump is a variable frequency pump, and the PID operator can control the working frequency of the slurry pump.

8. A constant delivery system for a slurry pump that facilitates stable flotation liquid levels as claimed in claim 7, characterized in that: The collection end of the PID operator is connected with the backflow flow meter, the water inlet flow meter, the feed ore pulp flow meter and the discharge ore pulp flow meter.

9. A constant delivery system for a slurry pump that facilitates stable flotation liquid levels as claimed in claim 8, characterized in that: The control end of the PID operator is connected with the first electric valve, the second electric valve and the slurry pump.

10. A constant delivery system for a slurry pump that facilitates stable flotation liquid levels as claimed in claim 9, characterized in that: The second electric valve is a high-pressure water electric valve.

Images