A permanent magnet motor direct drive stirring system for a gold leaching tank

Abstract

The present invention relates to the technical field of gold leaching, and in particular to a direct-drive stirring system of a permanent magnet motor for a gold leaching tank, including a reaction shell, a driving module, a stirring module, a monitoring module and a control module. During the stirring of various substances in the reaction cavity, the control module obtains the specific situation during the stirring process through an image detector, and determines whether the operating state of the stirring module is qualified based on the floating sand change characterization parameter and the solute ratio characterization value, so as to take corresponding treatment measures in a timely manner when it is determined that there is an abnormality in the current operating state, including determining to adjust the operating power of the permanent magnet motor to the corresponding value in combination with the flow velocity difference characterization value, or correcting the pre-tightening force of the corresponding bolt, effectively improving the stability of the operation of the stirring system and improving the processing efficiency of gold.

Description

Technical Field

[0001] The present invention relates to the technical field of gold leaching, and particularly to a direct-drive stirring system of a permanent magnet motor for a gold leaching tank. Background Art

[0002] In the process of gold mining and refining, gold leaching is a crucial link. The traditional stirring system of a gold leaching tank usually uses an AC motor to drive the stirring device through a complex transmission mechanism. In the past, common mixers used an asynchronous motor with a speed reducer for driving during operation. However, during the working process, it would generate relatively large losses, and the efficiency of the asynchronous motor was relatively low, consuming a large amount of electric energy. The driving system using a permanent magnet synchronous motor can not only save more electric energy during operation but also make the motor assembly more convenient because the speed reducer is eliminated.

[0003] Chinese Patent Publication No.: CN221588641 U discloses a mechanical stirring leaching tank for gold smelting and extraction. The stirring mechanism includes a first stirring shaft at the upper part, the lower end of the first stirring shaft is connected with a first bevel gear, and further includes a second stirring shaft at the lower part, the upper end of the second stirring shaft is connected with a second bevel gear. The first stirring shaft and the second stirring shaft are both longitudinally arranged and their axes coincide. The stirring mechanism further includes a motor arranged outside the tank body, the motor is connected with a driving shaft, and a driving bevel gear meshing with the first bevel gear and the second bevel gear is installed on the driving shaft; the stirring method of the present invention generates a strong convection effect; thus, it can be seen that the above technical solution has the following problems: it does not consider monitoring the gold leaching process and does not consider automatically adjusting the operating parameters of the motor based on the monitoring data, which affects the processing efficiency of gold. Summary of the Invention

[0004] Therefore, the present invention provides a direct-drive stirring system of a permanent magnet motor for a gold leaching tank to overcome the problems in the prior art that it does not consider monitoring the gold leaching process and does not consider automatically adjusting the operating parameters of the motor based on the monitoring data, which affects the processing efficiency of gold.

[0005] To achieve the above object, the present invention provides a direct-drive stirring system of a permanent magnet motor for a gold leaching tank, including:

[0006] A reaction housing, which includes a reaction chamber and an end cover;

[0007] A driving module, which includes a permanent magnet motor connected to the end cover;

[0008] A stirring module, which includes a first stirring mechanism and a second stirring mechanism arranged in the reaction chamber for stirring. The first stirring mechanism and the second stirring mechanism are connected by a plurality of linkage bolts, and the first stirring mechanism and the vertical permanent magnet motor are connected by a plurality of transmission bolts;

[0009] A monitoring module, which includes a first flow velocity sensor arranged on the inner side wall of the reaction housing near the first stirring mechanism for obtaining the upper flow velocity, a second flow velocity sensor arranged on the inner side wall of the reaction housing near the second stirring mechanism for obtaining the lower flow velocity, an image detector arranged on the lower surface of the end cover for obtaining the liquid surface image information in the reaction chamber, a temperature sensor arranged on one side of the permanent magnet motor for detecting the temperature of the permanent magnet motor, and a distance sensor arranged adjacent to the image detector for obtaining the liquid surface height;

[0010] A control module, which is arranged outside the reaction housing and is connected to the driving module, the stirring module and the monitoring module, is used to determine the floating sand change characterization parameter based on the liquid surface image information, and determine whether the operation state of the stirring module is qualified based on the floating sand change characterization parameter and the solute proportion characterization value, and when it is determined that the operation state of the stirring module does not meet the preset standard, process the operation parameters of the stirring module, including: determining to adjust the operation power of the permanent magnet motor to the corresponding value in combination with the flow velocity difference characterization value, or correcting the pre-tightening force of the corresponding bolt.

[0011] Further, each stirring mechanism includes a rotating main shaft and a first blade and a second blade connected to the rotating main shaft, and each blade is connected to the corresponding rotating main shaft through a plurality of fixing bolts.

[0012] Further, the control module is used to determine the floating sand change characterization parameter based on the liquid surface image information, including:

[0013] Obtaining the gray average value of the liquid surface image information to obtain the floating sand reference value;

[0014] Obtaining the floating sand reference value at a predetermined time interval;

[0015] Calculating the absolute value of the difference between the floating sand reference value at the current time node and the floating sand reference value at the adjacent time node, and solving the ratio of the absolute value to the predetermined time interval to obtain the floating sand change characterization parameter;

[0016] The control module is used to determine whether the operation state of the stirring module is qualified based on the floating sand change characterization parameter, including:

[0017] If the floating sand change characterization parameter is less than or equal to the first preset change characterization parameter, it is determined that the operation state of the stirring module is unqualified, and the processing method for the stirring module is determined based on the parameter difference between the first preset change characterization parameter and the floating sand change characterization parameter;

[0018] If the floating sand change characterization parameter is less than or equal to the second preset change characterization parameter and greater than the first preset change characterization parameter, it is determined whether the operation state of the stirring module is qualified based on the solute proportion characterization value;

[0019] If the floating sand change characterization parameter is greater than the second preset change characterization parameter, it is determined that the operating state of the stirring module is qualified, and the driving module is controlled to continue operating with the current operating parameters.

[0020] Further, the control module is used to determine whether the operating state of the stirring module is qualified based on the solute proportion characterization value, including:

[0021] To determine the solute proportion characterization value, calculate the liquid level difference between the liquid level height obtained by the sensor at the current time node and the initial liquid level height, and solve the ratio of the liquid level difference to the initial liquid level height to obtain the solute proportion characterization value;

[0022] If the solute proportion characterization value is less than or equal to the preset proportion characterization value, the first preset change characterization parameter is adjusted to the corresponding value based on the liquid level difference;

[0023] If the solute proportion characterization value is greater than the preset proportion characterization value, it is determined that the operating state of the stirring module is unqualified, and the treatment method for the stirring module is determined based on the parameter difference between the first preset change characterization parameter and the floating sand change characterization parameter.

[0024] Further, the control module is used to adjust the first preset change characterization parameter to the corresponding value based on the liquid level difference, where:

[0025] The increase amplitude of the first preset change characterization parameter determined based on the liquid level difference is proportional to the liquid level difference.

[0026] Further, the control module is used to determine the treatment method for the stirring module based on the parameter difference, including:

[0027] If the parameter difference is less than or equal to the preset parameter difference, the pre-tightening force of the corresponding bolt is corrected based on the flow velocity difference characterization value, or the operating power of the permanent magnet motor is adjusted to the corresponding value;

[0028] If the parameter difference is greater than the preset parameter difference, the power of the permanent magnet motor is adjusted to the corresponding value based on the temperature of the permanent magnet motor.

[0029] Further, the control module is used to determine the pre-tightening force of the corresponding bolt to be corrected based on the flow velocity difference characterization value, or adjust the operating power of the permanent magnet motor to the corresponding value, including:

[0030] The control module is used to determine the flow velocity difference characterization value, calculate the ratio of the upper flow velocity to the lower flow velocity, and obtain the flow velocity difference characterization value;

[0031] If the flow velocity difference characterization value is within the preset flow velocity difference characterization interval, the power of the permanent magnet motor is adjusted to the corresponding value based on the temperature of the permanent magnet motor;

[0032] If the flow velocity difference characterization value is not within the preset flow velocity difference characterization interval, the pre-tightening force of the corresponding bolt is corrected based on the comparison result of the upper flow velocity and the lower flow velocity.

[0033] Further, the control module is used to correct the pre-tightening force of the corresponding bolt based on the comparison result of the upper flow velocity and the lower flow velocity, including:

[0034] If the upper flow velocity is greater than or equal to the lower flow velocity, the pre-tightening force of each linkage bolt is adjusted to the corresponding value using a preset pre-tightening force adjustment coefficient;

[0035] If the upper flow velocity is less than the lower flow velocity, the pre-tightening force of each fixed bolt is adjusted to the corresponding value using a preset pre-tightening force adjustment coefficient.

[0036] Further, the control module is used to adjust the power of the permanent magnet motor to the corresponding value based on the temperature of the permanent magnet motor, where:

[0037] The increase amplitude of the power of the permanent magnet motor determined based on the temperature of the permanent magnet motor is positively correlated with the temperature of the permanent magnet motor.

[0038] Further, under the condition that the adjustment of the power of the permanent magnet motor is completed, the control module calculates the average value of the re-acquired upper flow velocity and lower flow velocity, and records it as the flow velocity mean value. If the flow velocity mean value is less than the corresponding preset flow velocity mean value, the power of the permanent magnet motor is adjusted to the corresponding value using a preset power adjustment coefficient; if the flow velocity mean value is greater than or equal to the corresponding preset flow velocity mean value, the control drives the module to operate using the current operating parameters.

[0039] Compared with the prior art, the beneficial effects of the present invention are that during the stirring of various substances in the reaction chamber, the specific situation during the stirring process is obtained through an image detector, and whether the operating state of the stirring module is qualified is determined based on the floating sand change characterization parameter and the solute ratio characterization value, so as to take corresponding treatment measures in a timely manner when it is determined that there is an abnormality in the current operating state, including determining to adjust the operating power of the permanent magnet motor to the corresponding value in combination with the flow velocity difference characterization value, or correcting the pre-tightening force of the corresponding bolt, effectively improving the operating stability of the stirring system and improving the processing efficiency of gold.

[0040] Furthermore, whether the operating state of the stirring module is qualified is determined based on the floating sand change characterization parameter. The floating sand change characterization parameter characterizes the impurity precipitation situation. As the impurity precipitation process proceeds, the solution color will become turbid, and the obtained grayscale average value will decrease. When it is determined that the floating sand change characterization parameter is less than or equal to the second preset change characterization parameter and greater than the first preset change characterization parameter, there is a tendency for the impurity precipitation rate to be low. In this case, the solute ratio characterization value is determined. The solute ratio characterization value characterizes the solute solution ratio. When the solute ratio characterization value is less than or equal to the preset ratio characterization value, there is an abnormal floating sand change characterization parameter due to a small amount of input material. At this time, the judgment standard is corrected according to the specific situation of the input material, and the monitoring parameters for the stirring module are automatically determined according to the actual working conditions. While improving the accuracy of monitoring the stirring process, the processing efficiency of gold is further improved.

[0041] Furthermore, when it is determined that the operating state of the stirring module does not meet the preset standard, the parameter difference is determined, and the parameter difference characterizes the deviation of the floating sand change characterization parameter. When the parameter difference is greater than the preset parameter difference, the impurity precipitation speed is too slow. In this case, the operating power of the permanent magnet motor is adjusted to accelerate the stirring of the material in the reaction chamber; when the parameter difference is less than or equal to the preset parameter difference, there is a slight deviation in the precipitation of impurities. At this time, the specific situation of the stirring mechanism is determined based on the flow velocity difference characterization value, so as to process the stirring mechanism according to the specific situation; the flow velocity difference characterization value characterizes the specific situation of the upper flow velocity and the lower flow velocity. When the flow velocity difference characterization value is in the preset flow velocity difference characterization interval, the flow conditions of the upper flow velocity and the lower flow velocity are unified. In this case, the components are tightly connected, and due to the abnormal rotation of the permanent magnet motor This causes an abnormal impurity precipitation rate. In this case, the permanent magnet motor is adjusted; when the flow velocity difference characterization value is not in the preset flow velocity difference characterization interval, the flow conditions of the upper flow velocity and the lower flow velocity are not uniform. In this case, there is loose connection between components. At this time, the upper flow velocity is compared with the lower flow velocity. When the upper flow velocity is greater than or equal to the lower flow velocity, the second stirring mechanism rotates abnormally. In this case, the preload force of the linkage bolt is corrected to tighten the connection between the first stirring mechanism and the second stirring mechanism; when the upper flow velocity is less than the lower flow velocity, the stirring mechanism operates abnormally due to loose blades in the first stirring mechanism. The preload force of the fixing bolts is adjusted, and the specific situation of the stirring module is analyzed according to the data determined by the monitoring module. Targeted adjustments are made to each component to improve the processing efficiency of gold. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 This is a module block diagram of a permanent magnet motor direct-driven stirring system for a gold leaching tank according to an embodiment of the present invention;

[0043] Figure 2 This is a schematic diagram of the internal structure of a permanent magnet motor direct-driven stirring system for a gold leaching tank according to an embodiment of the present invention;

[0044] In the figure: 21, permanent magnet motor; 31, first stirring mechanism; 32, first stirring mechanism; 311, first blade; 312, second blade. Specific embodiments

[0045] In order to make the objectives and advantages of the present invention more clearly understood, the present invention will be further described below in conjunction with embodiments; it should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0046] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principles of the present invention and do not limit the protection scope of the present invention.

[0047] It should be noted that in the description of the present invention, the terms indicating directions or positional relationships such as "upper", "lower", "left", "right", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings. This is only for convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0048] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0049] Please refer to Figure 1 and Figure 2 as shown, which are respectively the module block diagram and the internal structure schematic diagram of the permanent magnet motor direct drive stirring system of the gold leaching tank in the embodiment of the present invention; an embodiment of the present invention, a gold leaching tank permanent magnet motor direct drive stirring system, includes:

[0050] Specifically, a reaction housing (not shown in the figure), which includes a reaction chamber and an end cover;

[0051] A drive module, which includes a permanent magnet motor 21 connected to the end cover;

[0052] A stirring module, which includes a first stirring mechanism 31 and a second stirring mechanism 32 arranged in the reaction chamber for stirring. The first stirring mechanism 31 and the second stirring mechanism 32 are connected by a number of linkage bolts (not shown in the figure), and the first stirring mechanism 31 and the vertical permanent magnet motor 21 are connected by a number of drive bolts (not shown in the figure).

[0053] A monitoring module (not shown in the figure), which includes a first flow rate sensor arranged on the inner side wall of the reaction shell near the first stirring mechanism 31 for obtaining the upper flow rate, a second flow rate sensor arranged on the inner side wall of the reaction shell near the second stirring mechanism 32 for obtaining the lower flow rate, an image detector arranged on the lower surface of the end cover for obtaining the liquid surface image information in the reaction chamber, a temperature sensor arranged on one side of the permanent magnet motor 21 for detecting the temperature of the permanent magnet motor 21, and a distance sensor arranged adjacent to the image detector for obtaining the liquid surface height.

[0054] A control module (not shown in the figure), which is used to determine the floating sand change characterization parameter based on the liquid surface image information, and determine whether the operation state of the stirring module is qualified based on the floating sand change characterization parameter and the solute ratio characterization value. When it is determined that the operation state of the stirring module does not meet the preset standard, the operation parameters of the stirring module are processed, including: determining to adjust the operation power of the permanent magnet motor 21 to the corresponding value in combination with the flow rate difference characterization value, or correcting the pre-tightening force of the corresponding bolt.

[0055] Specifically, the specific connection methods of the first stirring mechanism 31 and the second stirring mechanism 32, the first stirring mechanism 31 and the permanent magnet motor 21, and each blade and the corresponding rotating main shaft are not limited. They can be fixed by a number of bolts, nuts and flat washers. This is the prior art and will not be elaborated here.

[0056] Specifically, the permanent magnet motor 21 connected to the end cover operates, driving the first stirring mechanism 31 to rotate, and the first stirring mechanism 31 drives the second stirring mechanism 32 to rotate to complete the stirring of various substances in the reaction chamber.

[0057] Specifically, during the stirring of various substances in the reaction chamber, the specific situation during the stirring process is obtained through the image detector. Whether the operation state of the stirring module is qualified is determined based on the floating sand change characterization parameter and the solute ratio characterization value. When it is determined that there is an abnormality in the current operation state, corresponding processing measures are taken in a timely manner, including determining to adjust the operation power of the permanent magnet motor 21 to the corresponding value in combination with the flow rate difference characterization value, or correcting the pre-tightening force of the corresponding bolt, effectively improving the operation stability of the stirring system and improving the processing efficiency of gold.

[0058] Specifically, each stirring mechanism includes a rotating main shaft (not shown in the figure) and a first blade 311 and a second blade 312 connected to the rotating main shaft. Each blade is connected to the corresponding rotating main shaft by a number of fixing bolts (not shown in the figure).

[0059] Specifically, the control module is used to determine the floating sand change characterization parameter based on the liquid surface image information, including:

[0060] To obtain the gray average value of the liquid surface image information to obtain the floating sand reference value;

[0061] To obtain the floating sand reference value at a predetermined time interval;

[0062] To calculate the absolute value of the difference between the floating sand reference value at the current time node and the floating sand reference value at the adjacent time node, and solve the ratio of the absolute value to the predetermined time interval to obtain the floating sand change characterization parameter;

[0063] The control module is used to determine whether the operation state of the stirring module is qualified based on the floating sand change characterization parameter, including:

[0064] If the floating sand change characterization parameter is less than or equal to the first preset change characterization parameter, it is determined that the operation state of the stirring module is unqualified, and the processing method for the stirring module is determined based on the parameter difference between the first preset change characterization parameter and the floating sand change characterization parameter;

[0065] If the floating sand change characterization parameter is less than or equal to the second preset change characterization parameter and greater than the first preset change characterization parameter, it is determined whether the operation state of the stirring module is qualified based on the solute proportion characterization value;

[0066] If the floating sand change characterization parameter is greater than the second preset change characterization parameter, it is determined that the operation state of the stirring module is qualified, and the driving module is controlled to continue to operate with the current operating parameters.

[0067] Specifically, the first preset change characterization parameter B1 is selected in the interval [0.38L0, 0.42L0], and the second preset change characterization parameter B2 is selected in the interval [0.82L0, 0.87L0], where L0 is the average value of the historical floating sand change characterization parameters at the corresponding decision time node.

[0068] Specifically, the number of selections of the historical floating sand change characterization parameters is not limited. To ensure the division of the gold leaching situation, the number of selections should be no less than 200, which will not be elaborated here.

[0069] Specifically, the control module is used to determine whether the operation state of the stirring module is qualified based on the solute proportion characterization value, including:

[0070] It is used to determine the solute proportion characterization value, calculate the liquid level difference between the current time node and the liquid level height obtained by the sensor and the initial liquid level height, and solve the ratio of the liquid level difference to the initial liquid level height to obtain the solute proportion characterization value;

[0071] If the solute proportion characterization value is less than or equal to the preset proportion characterization value, the first preset change characterization parameter is adjusted to the corresponding value based on the liquid level difference;

[0072] If the solute proportion characterization value is greater than the preset proportion characterization value, it is determined that the operating state of the stirring module is unqualified, and the treatment method for the stirring module is determined based on the parameter difference between the first preset change characterization parameter and the floating sand change characterization parameter.

[0073] Specifically, based on the floating sand change characterization parameter, it is determined whether the operating state of the stirring module is qualified. The floating sand change characterization parameter characterizes the impurity precipitation situation. As the impurity precipitation process progresses, the color of the solution becomes turbid, and at the same time, the obtained average gray value decreases; when it is determined that the floating sand change characterization parameter is less than or equal to the second preset change characterization parameter and greater than the first preset change characterization parameter, there is a tendency of a lower impurity precipitation rate. In this case, the solute proportion characterization value is determined. The solute proportion characterization value characterizes the solute-solution ratio. When the solute proportion characterization value is less than or equal to the preset proportion characterization value, there is an abnormality in the floating sand change characterization parameter due to the small amount of input materials. At this time, the determination standard is corrected according to the specific situation of the input materials, and the monitoring parameters for the stirring module are automatically determined according to the actual working conditions, improving the accuracy of the monitoring of the stirring process while further improving the processing efficiency of gold.

[0074] Specifically, the solute proportion characterization value Z0 is selected within the interval [0.63R0, 0.74R0], where R0 is the average value of the historical solute proportion characterization values.

[0075] Specifically, there is no limit to the number of selected solute proportion characterization values in the historical data. It can be understood that in order to divide the input amount of the input materials, the number of selected values should be no less than 400.

[0076] Specifically, the initial liquid level height is the liquid level height obtained by the sensor before the input of materials.

[0077] Specifically, the control module is used to adjust the first preset change characterization parameter to the corresponding value based on the liquid level difference, where:

[0078] The increase amplitude of the first preset change characterization parameter determined based on the liquid level difference is proportional to the liquid level difference.

[0079] In this embodiment, optionally,

[0080] Compare the liquid level difference Z with the first liquid level characterization threshold Z1 and the second liquid level characterization threshold Z2.

[0081] If Z < Z1, use the first parameter adjustment coefficient to adjust the first preset change characterization parameter to the corresponding value, and the adjusted first preset change characterization parameter is 1.17 times the initial first preset change characterization parameter.

[0082] If Z1 ≤ Z ≤ Z2, use the second parameter adjustment coefficient to adjust the first preset change characterization parameter to the corresponding value, and the adjusted first preset change characterization parameter is 1.24 times the initial first preset change characterization parameter.

[0083] If Z > Z2, use the third parameter adjustment coefficient to adjust the first preset change characterization parameter to the corresponding value, and the adjusted first preset change characterization parameter is 1.32 times the initial first preset change characterization parameter.

[0084] Among them, Z1 = 0.53Z0, Z2 = 0.81Z0.

[0085] Specifically, after the control module completes the adjustment of the first preset change characterization parameter, it re-determines whether the operating state of the stirring module is qualified based on the floating sand change characterization parameter. If the floating sand change characterization parameter is less than or equal to the adjusted first preset change characterization parameter, it is determined that the operating state of the stirring module is unqualified, and the processing method for the stirring module is determined based on the parameter difference between the first preset change characterization parameter and the floating sand change characterization parameter; if the floating sand change characterization parameter is greater than the adjusted first preset change characterization parameter, it is determined that the operating state of the stirring module is qualified, and the drive module is controlled to continue operating with the current operating parameters.

[0086] Specifically, the control module is used to determine the processing method for the stirring module based on the parameter difference, including:

[0087] If the parameter difference is less than or equal to the preset parameter difference, determine the pre-tightening force of the corresponding bolt based on the flow velocity difference characterization value, or adjust the operating power of the permanent magnet motor 21 to the corresponding value.

[0088] If the parameter difference is greater than the preset parameter difference, adjust the power of the permanent magnet motor 21 to the corresponding value based on the temperature of the permanent magnet motor 21.

[0089] Specifically, the parameter difference C0 is selected within the interval [0.25L0, 0.57L0].

[0090] Specifically, the control module is used to determine the pre-tightening force of the corresponding bolt based on the flow velocity difference characterization value, or adjust the operating power of the permanent magnet motor 21 to the corresponding value, including:

[0091] The control module is used to determine the flow rate difference characterization value, calculate the ratio of the upper flow rate to the lower flow rate, and obtain the flow rate difference characterization value;

[0092] If the flow rate difference characterization value is within the preset flow rate difference characterization interval, the power of the permanent magnet motor 21 is adjusted to the corresponding value based on the temperature of the permanent magnet motor 21;

[0093] If the flow rate difference characterization value is not within the preset flow rate difference characterization interval, the pre-tightening force of the corresponding bolt is corrected based on the comparison result of the upper flow rate and the lower flow rate.

[0094] Specifically, the preset flow rate difference characterization interval is [0.97, 1.15].

[0095] Specifically, the control module is used to correct the pre-tightening force of the corresponding bolt based on the comparison result of the upper flow rate and the lower flow rate, including:

[0096] If the upper flow rate is greater than or equal to the lower flow rate, the pre-tightening force of each linkage bolt is adjusted to the corresponding value using the preset pre-tightening force adjustment coefficient;

[0097] If the upper flow rate is less than the lower flow rate, the pre-tightening force of each fixing bolt is adjusted to the corresponding value using the preset pre-tightening force adjustment coefficient.

[0098] Specifically, the pre-tightening force of each linkage bolt adjusted using the preset pre-tightening force adjustment coefficient is 1.18 times the initial pre-tightening force of the linkage bolt, and the pre-tightening force of each fixing bolt adjusted using the preset pre-tightening force adjustment coefficient is 1.18 times the initial pre-tightening force of the fixing bolt. It can be understood that the preset pre-tightening force adjustment coefficient can be defined according to the specific bolt size and will not be elaborated here.

[0099] Specifically, the control module is used to adjust the power of the permanent magnet motor 21 to the corresponding value based on the temperature of the permanent magnet motor 21, where:

[0100] The increase amplitude of the power of the permanent magnet motor 21 determined based on the temperature of the permanent magnet motor 21 is positively correlated with the temperature of the permanent magnet motor 21.

[0101] In this embodiment, optionally,

[0102] Compare the temperature T of the permanent magnet motor 21 with the first temperature characterization threshold T1 and the second temperature characterization threshold T2,

[0103] If T < T1, the power of the permanent magnet motor 21 is determined as the first power P1, and it is set that P1 = 1.13P0;

[0104] If T1 ≤ T ≤ T2, the power of the permanent magnet motor 21 is determined as the second power P2, and it is set that P2 = 1.24P0;

[0105] If T > T2, then determine the power of the permanent magnet motor 21 as the third power P3, and set P3 = 1.32P0;

[0106] Among them, P0 represents the initial power of the permanent magnet motor 21, T1 = 1.3T0, T2 = 1.5T0, and T0 is the average value of each historical temperature obtained by the temperature sensor.

[0107] Specifically, when it is determined that the operating state of the stirring module does not meet the preset standard, determine the parameter difference, which characterizes the deviation of the floating sand change characterization parameter. When the parameter difference is greater than the preset parameter difference, the speed of impurity precipitation is too slow. In this case, adjust the operating power of the permanent magnet motor 21 to accelerate the stirring of the substances in the reaction chamber; when the parameter difference is less than or equal to the preset parameter difference, there is a slight deviation in the precipitation of impurities. At this time, determine the specific situation of the stirring mechanism based on the flow velocity difference characterization value, and process the stirring mechanism according to the specific situation; the flow velocity difference characterization value characterizes the specific situation of the upper flow velocity and the lower flow velocity. When the flow velocity difference characterization value is within the preset flow velocity difference characterization interval, the flow situations of the upper flow velocity and the lower flow velocity are unified. In this case, the connections of all components are tightened. Since the rotation of the permanent magnet motor 21 is abnormal, resulting in abnormal impurity precipitation speed, adjust the permanent magnet motor 21 in this case; when the flow velocity difference characterization value is not within the preset flow velocity difference characterization interval, in this case, the flow situations of the upper flow velocity and the lower flow velocity are not unified. In this case, there is a loose connection of the components. At this time, compare the upper flow velocity and the lower flow velocity. When the upper flow velocity is greater than or equal to the lower flow velocity, the rotation of the second stirring mechanism 32 is abnormal. In this case, correct the pre-tightening force of the linkage bolt to tighten the connection between the first stirring mechanism 31 and the second stirring mechanism 32; when the upper flow velocity is less than the lower flow velocity, in this case, due to the looseness of the blades in the first stirring mechanism 31, the operation of the stirring mechanism is abnormal. Adjust the pre-tightening force of the fixing bolt, analyze the specific situation of the stirring module based on the data determined by the monitoring module, and perform targeted adjustment on each component, improving the processing efficiency of gold.

[0108] Specifically, under the condition that the control module completes the adjustment of the power of the permanent magnet motor 21, solve the average value of the re-acquired upper flow velocity and lower flow velocity, and record it as the flow velocity average value. If the flow velocity average value is less than the corresponding preset flow velocity average value, use the preset power adjustment coefficient to adjust the power of the permanent magnet motor 21 to the corresponding value; if the flow velocity average value is greater than or equal to the corresponding preset flow velocity average value, control the drive module to operate with the current operating parameters.

[0109] Specifically, there is no limitation on the acquisition method of the corresponding preset flow velocity average value. The average value of each flow velocity average value corresponding to the current power of the permanent magnet motor 21 can be obtained based on historical data, and 0.83 times the solved average value is used as the corresponding preset flow velocity average value, which will not be elaborated here.

[0110] Specifically, the power of the permanent magnet motor 21 adjusted by using the preset power adjustment coefficient is 1.12 times the current power of the permanent magnet motor 21.

[0111] So far, the technical solution of the present invention has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

[0112] The above are only the preferred embodiments of the present invention and are not used to limit the present invention; for those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A permanent magnet motor direct drive stirring system for a gold leaching tank, characterized in that, Comprising: A reaction housing, which includes a reaction chamber and an end cap; A drive module, which includes a permanent magnet motor connected to the end cap; A stirring module, which includes a first stirring mechanism and a second stirring mechanism arranged in the reaction chamber for stirring. The first stirring mechanism and the second stirring mechanism are connected by a number of linkage bolts, and the first stirring mechanism and the permanent magnet motor are connected by a number of transmission bolts; A monitoring module, which includes a first flow rate sensor arranged on the inner side wall of the reaction housing near the first stirring mechanism for obtaining the upper flow rate, a second flow rate sensor arranged on the inner side wall of the reaction housing near the second stirring mechanism for obtaining the lower flow rate, an image detector arranged on the lower surface of the end cap for obtaining the liquid level image information in the reaction chamber, a temperature sensor arranged on one side of the permanent magnet motor for detecting the temperature of the permanent magnet motor, and a distance sensor arranged adjacent to the image detector for obtaining the liquid level height; A control module, which is arranged outside the reaction housing and is connected to the drive module, the stirring module and the monitoring module, and is used for determining the floating sand change characterization parameter based on the liquid level image information, and judging whether the operation state of the stirring module is qualified based on the floating sand change characterization parameter and the solute proportion characterization value, and when judging that the operation state of the stirring module does not meet the preset standard, processing the operation parameters of the stirring module, including: determining to adjust the operation power of the permanent magnet motor to the corresponding value in combination with the flow rate difference characterization value, or correcting the pre-tightening force of the corresponding bolts.

2. The permanent magnet motor direct drive stirring system for a gold leaching tank according to claim 1, wherein Each stirring mechanism includes a rotating main shaft and a first blade and a second blade connected to the rotating main shaft. Each blade is connected to the corresponding rotating main shaft by a number of fixing bolts.

3. The permanent magnet motor direct drive stirring system for a gold leaching tank according to claim 2, wherein The control module is used for determining the floating sand change characterization parameter based on the liquid level image information, including: Obtaining the gray average value of the liquid level image information to obtain the floating sand reference value; Obtaining the floating sand reference value at a predetermined time interval; Calculating the absolute value of the difference between the floating sand reference value at the current time node and the floating sand reference value at the adjacent time node, and solving the ratio of the absolute value to the predetermined time interval to obtain the floating sand change characterization parameter; The control module is used for judging whether the operation state of the stirring module is qualified based on the floating sand change characterization parameter, including: If the floating sand change characterization parameter is less than or equal to the first preset change characterization parameter, it is determined that the operation state of the stirring module is unqualified, and the processing method for the stirring module is determined based on the parameter difference between the first preset change characterization parameter and the floating sand change characterization parameter; If the floating sand change characterization parameter is less than or equal to the second preset change characterization parameter and greater than the first preset change characterization parameter, it is judged whether the operation state of the stirring module is qualified based on the solute proportion characterization value; If the floating sand change characterization parameter is greater than the second preset change characterization parameter, it is determined that the operation state of the stirring module is qualified, and the drive module is controlled to continue running with the current operation parameters.

4. The permanent magnet motor direct drive stirring system for a gold leaching tank according to claim 3, wherein The control module is used for judging whether the operation state of the stirring module is qualified based on the solute proportion characterization value, including: To determine the solute proportion characterization value, calculate the liquid level difference between the current time node and the liquid level height obtained by the sensor and the initial liquid level height, and solve the ratio of the liquid level difference to the initial liquid level height to obtain the solute proportion characterization value; If the solute proportion characterization value is less than or equal to the preset proportion characterization value, adjust the first preset change characterization parameter to the corresponding value based on the liquid level difference; If the solute proportion characterization value is greater than the preset proportion characterization value, determine that the operating state of the stirring module is unqualified, and determine the treatment method for the stirring module based on the parameter difference between the first preset change characterization parameter and the floating sand change characterization parameter.

5. The permanent magnet motor direct drive stirring system for a gold leaching tank according to claim 4, wherein, The control module is used to adjust the first preset change characterization parameter to the corresponding value based on the liquid level difference, where: The increase amplitude of the first preset change characterization parameter determined based on the liquid level difference is proportional to the liquid level difference.

6. The permanent magnet motor direct drive stirring system for a gold leaching tank according to claim 5, wherein, The control module is used to determine the treatment method for the stirring module based on the parameter difference, including: If the parameter difference is less than or equal to the preset parameter difference, determine the pre-tightening force of the corresponding bolt based on the flow velocity difference characterization value, or adjust the operating power of the permanent magnet motor to the corresponding value; If the parameter difference is greater than the preset parameter difference, adjust the power of the permanent magnet motor to the corresponding value based on the temperature of the permanent magnet motor.

7. The permanent magnet motor direct drive stirring system of the gold leaching tank according to claim 6, characterized in that, The control module is used to determine the pre-tightening force of the corresponding bolt based on the flow velocity difference characterization value, or adjust the operating power of the permanent magnet motor to the corresponding value, including: The control module is used to determine the flow velocity difference characterization value, calculate the ratio of the upper flow velocity to the lower flow velocity, and obtain the flow velocity difference characterization value; If the flow velocity difference characterization value is within the preset flow velocity difference characterization interval, adjust the power of the permanent magnet motor to the corresponding value based on the temperature of the permanent magnet motor; If the flow velocity difference characterization value is not within the preset flow velocity difference characterization interval, correct the pre-tightening force of the corresponding bolt based on the comparison result of the upper flow velocity and the lower flow velocity.

8. The permanent magnet motor direct drive stirring system for a gold leaching tank according to claim 7, characterized in that The control module is used to correct the pre-tightening force of the corresponding bolt based on the comparison result of the upper flow velocity and the lower flow velocity, including: If the upper flow velocity is greater than or equal to the lower flow velocity, adjust the pre-tightening force of each linkage bolt to the corresponding value using the preset pre-tightening force adjustment coefficient; If the upper flow velocity is less than the lower flow velocity, adjust the pre-tightening force of each fixed bolt to the corresponding value using the preset pre-tightening force adjustment coefficient.

9. The permanent magnet motor direct drive stirring system for a gold leaching tank according to claim 8, characterized in that, The control module is used to adjust the power of the permanent magnet motor to the corresponding value based on the temperature of the permanent magnet motor, where: The increase amplitude of the power of the permanent magnet motor determined based on the temperature of the permanent magnet motor is positively correlated with the temperature of the permanent magnet motor.

10. The permanent magnet motor direct drive stirring system for a gold leaching tank according to claim 9, characterized in that, Under the condition that the control module completes the adjustment of the power of the permanent magnet motor, solve the average value of the re-acquired upper flow velocity and lower flow velocity, and record it as the flow velocity average value. If the flow velocity average value is less than the corresponding preset flow velocity average value, adjust the power of the permanent magnet motor to the corresponding value using the preset power adjustment coefficient; if the flow velocity average value is greater than or equal to the corresponding preset flow velocity average value, control the drive module to operate with the current operating parameters.

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