Method and apparatus for hydraulic design of volute of feed pump of mineral slurry preheater, and electronic device

Abstract

The present application relates to the technical field of fluid machinery, and provides a method and apparatus for hydraulic design of a volute of a feed pump of a mineral slurry preheater, and an electronic device. The method comprises: determining a base circle diameter on the basis of an impeller diameter and a pump specific speed; determining the width of a volute on the basis of an impeller flow passage width, an impeller shroud thickness, and an impeller back vane height; determining the heights of different cross sections on the basis of the area of a cross section VIII and a flow volume of a feed pump, an average flow rate of a medium passing through the cross section VIII, a volute cross‑section top arc radius, and the width of the volute; determining the area of a throat cross section of the volute on the basis of the area of the cross section VIII and the pump specific speed; determining a throat width at a volute tongue cross section on the basis of the area of the throat cross section and the volute cross-section top arc radius; and determining a hydraulic design result of the volute on the basis of the base circle diameter, the heights of different cross sections, and the throat width at the volute tongue cross section. The present application can achieve the purpose of designing parameters of a volute of a feed pump of a mineral slurry preheater, thereby improving the pass rate of one-time volute casting.

Description

Design method and device for volute hydraulic of slurry preheater feeding pump and electronic equipment TECHNICAL FIELD

[0001] The present application relates to the technical field of fluid machinery, in particular to a design method and device for volute hydraulic of slurry preheater feeding pump and electronic equipment. BACKGROUND

[0002] The slurry preheater is a device for storing and heating high-pressure slurry. The slurry is a three-phase mixture of solid, liquid and gas, with a solid content of generally 35% to 40%, and the rest is steam and acid-containing solution, with a PH of 2 to 4. The preheater is a sealed cylindrical tank, which is under pressure. As the medium temperature rises from 105°C to 165°C, the pressure in the tank rises from 0.8 MPa to 2.2 MPa.

[0003] The slurry preheater feeding pump is used for slurry transportation. When the slurry is sucked into the pump cavity and transported in the volute, the solid particles cause severe wear to the volute. The volute of the slurry preheater feeding pump is generally made of high-hardness wear-resistant material, which is brittle and has relatively poor casting performance. The more complex the structure, the lower the yield.

[0004] Due to the complex structure of the volute of the slurry preheater feeding pump, the existing technical solutions do not disclose how to design the volute parameters of the slurry preheater feeding pump, resulting in a low one-time casting qualification rate of the volute.

[0005] SUMMARY

[0006] Therefore, it is necessary to provide a design method and device for volute hydraulic of slurry preheater feeding pump and electronic equipment to achieve the purpose of designing the volute parameters of the slurry preheater feeding pump, thereby improving the one-time casting qualification rate of the volute.

[0007] To solve the above problems, the present application provides a design method for volute hydraulic of slurry preheater feeding pump, comprising:

[0008] determining the base circle diameter based on the impeller diameter and the pump specific speed;

[0009] determining the volute width based on the impeller passage width, the impeller cover plate thickness and the impeller back blade height;

[0010] determining the height of different sections based on the VIII section area of the feeding pump, the flow, the average flow rate of the medium passing through the VIII section, and the volute section top arc radius and the volute width;

[0011] determining the throat section area of the volute based on the VIII section area and the pump specific speed;

[0012] determine a throat width of the volute tongue section throat based on the throat section area and the volute section top circular arc radius;

[0013] determine a design result of the volute hydraulic force based on the base circle diameter, the height of the different sections, and the volute tongue section throat width.

[0014] In a possible implementation, the method for designing the volute hydraulic force of the slurry preheater feed pump further comprises:

[0015] obtain the flow rate, the head, and the rotating speed of the feed pump;

[0016] determine the pump specific speed and the volute outlet equivalent diameter based on the flow rate, the head, and the rotating speed;

[0017] determine the design result of the volute hydraulic force based on the base circle diameter, the height of the different sections, and the volute tongue section throat width, comprising:

[0018] determine the design result of the volute hydraulic force based on the base circle diameter, the height of the different sections, and the volute tongue section throat width.

[0019] In a possible implementation, the method for designing the volute hydraulic force of the slurry preheater feed pump further comprises:

[0020] determine the VIII section area based on the flow rate and the average flow rate of the medium through the VIII section.

[0021] In a possible implementation, the method for designing the volute hydraulic force of the slurry preheater feed pump further comprises:

[0022] determine the VIII section height based on the VIII section area and the volute section top circular arc radius and the volute width;

[0023] determine the I section height based on the flow rate, the average flow rate of the medium through the VIII section, and the volute section top circular arc radius and the volute width;

[0024] determine the height of the different sections based on the VIII section height and the I section height.

[0025] In a possible implementation, the calculation formula of the I section height is as follows:

[0026] Wherein, H1 is the first section height, V3 is the average flow rate of the medium through the eighth section, r is the radius of the top arc of the volute section, B3 is the volute width, and Q is the flow of the feed pump.

[0027] In a possible implementation, the calculation formula of the heights of different sections is as follows:

[0028] Wherein, H n is the nth section height, 2≤n≤7, H1 is the first section height, and H8 is the eighth section height.

[0029] In a possible implementation, based on the basic circle diameter, the heights of different sections, and the volute tongue section throat width, the design result of the volute hydraulic force is determined, including:

[0030] Based on the preset tongue placement angle and specific speed selection relationship, the volute tongue section throat width, and the un-annotated casting fillet, the height value of the tongue position is determined.

[0031] Based on the height value of the tongue position, the basic circle diameter, the heights of different sections, and the volute tongue section throat width, the design result of the volute hydraulic force is determined.

[0032] On the other hand, the application also provides a device for designing a feed pump volute hydraulic force of a slurry preheater, including:

[0033] The diameter calculation module is configured to determine the basic circle diameter based on the impeller diameter and the pump specific speed.

[0034] The first width calculation module is configured to determine the volute width based on the impeller passage width, the impeller cover plate thickness, and the impeller back blade height.

[0035] The height calculation module is configured to determine the heights of different sections based on the eighth section area of the feed pump, the flow, the average flow rate of the medium through the eighth section, and the radius of the top arc of the volute section and the volute width.

[0036] The area calculation module is configured to determine the throat section area of the volute based on the eighth section area and the pump specific speed.

[0037] The second width calculation module is configured to determine the volute tongue section throat width based on the throat section area and the radius of the top arc of the volute section.

[0038] The design result determination module is configured to determine the design result of the volute hydraulic force based on the basic circle diameter, the heights of different sections, and the volute tongue section throat width.

[0039] In another aspect, the present application also provides an electronic device comprising a memory and a processor, wherein

[0040] The memory is configured to store a program.

[0041] The processor is coupled to the memory and configured to execute the program stored in the memory to implement the steps of the method for designing the hydraulic force of the volute of the feed pump of the ore slurry preheater.

[0042] In another aspect, the present application also provides a non-transitory computer-readable storage medium having a computer program stored thereon, wherein the computer program, when executed by a processor, implements the steps of the method for designing the hydraulic force of the volute of the feed pump of the ore slurry preheater.

[0043] The method, device and electronic device for designing the hydraulic force of the volute of the feed pump of the ore slurry preheater provided by the present application have the following beneficial effects: the impeller diameter and the pump specific speed are determined to determine the base circle diameter; the impeller passage width, the impeller cover plate thickness and the impeller back blade height are determined to determine the volute width; the VIII cross-sectional area of the feed pump, the flow rate, the average flow rate of the medium passing through the VIII cross-section and the volute cross-section top arc radius are determined to determine the height of different cross-sections; the throat cross-sectional area of the volute is determined based on the VIII cross-sectional area and the pump specific speed; the throat width of the volute tongue cross-section is determined based on the throat cross-sectional area and the volute cross-section top arc radius; and the base circle diameter, the height of the different cross-sections and the throat width of the volute tongue cross-section are determined to determine the design result of the volute hydraulic force. The present application only needs to obtain the impeller diameter and the pump specific speed, the impeller passage width, the impeller cover plate thickness and the impeller back blade height, the VIII cross-sectional area, the flow rate, the average flow rate of the medium passing through the VIII cross-section and the volute cross-section top arc radius, etc. to design the volute parameters of the feed pump of the ore slurry preheater, thereby improving the one-time casting qualification rate of the volute. BRIEF DESCRIPTION OF DRAWINGS

[0044] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0045] FIG. 1 is a flowchart of one embodiment of the method for designing the hydraulic force of the volute of the feed pump of the ore slurry preheater provided by the present application;

[0046] FIG. 2 is a schematic diagram of a plurality of different cross-sections provided by the present application;

[0047] Fig. 3 is a schematic view of a volute throat provided by the present application;

[0048] Fig. 4 is a cross-sectional view of a volute provided by the present application;

[0049] Fig. 5 is a schematic block diagram of one embodiment of a design device for slurry preheater feed pump volute hydraulic pressure provided by the present application;

[0050] Fig. 6 is a schematic structural diagram of one embodiment of an electronic device provided by the present application. DETAILED DESCRIPTION

[0051] The technical solutions in the embodiments of the present application will be clearly and completely described in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by a person skilled in the art without creative work fall within the scope of protection of the present application.

[0052] In the description of the embodiments of the present application, the meaning of "a plurality of" is two or more, unless otherwise specified.

[0053] In the embodiments of the present application, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, device, product or equipment comprising a series of steps or modules does not have to be limited to the clearly listed steps or modules, but can include other steps or modules that are not clearly listed or inherent to the process, method, product or equipment.

[0054] The naming or numbering of the steps appearing in the embodiments of the present application does not mean that the steps in the method process must be performed in the time / logical order indicated by the naming or numbering. The named or numbered process steps can change the execution order according to the technical purpose to be achieved, as long as the same or similar technical effects can be achieved.

[0055] Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the present application. The appearance of the phrase in various places in the specification does not necessarily all refer to the same embodiment, nor is it necessarily mutually exclusive of other embodiments. It is explicitly and implicitly understood that the embodiments described herein can be combined.

[0056] The present application provides a slurry preheater feed pump volute hydraulic pressure design method, device and electronic equipment, which are described below respectively.

[0057] As shown in Fig. 1, the present application provides a slurry preheater feed pump volute hydraulic pressure design method, which comprises:

[0058] S101, determining a base circle diameter based on an impeller diameter and a pump specific speed;

[0059] S102, determining a volute width based on an impeller passage width, an impeller shroud thickness, and an impeller back blade height;

[0060] S103, determining a height of different sections of a volute based on an eighth section area of the feed pump, a flow rate, an average flow velocity of a medium passing through the eighth section, and a volute section top arc radius and the volute width;

[0061] S104, determining a throat section area of the volute based on the eighth section area and the pump specific speed;

[0062] S105, determining a volute tongue section throat width based on the throat section area and the volute section top arc radius;

[0063] S106, determining a design result of volute hydraulic force based on the base circle diameter, the height of the different sections, and the volute tongue section throat width.

[0064] It can be understood that the main purpose of the present application is to provide a centrifugal feed pump volute hydraulic design method for a slurry preheater, which aims to optimize the volute model size, improve the one-time casting qualification rate of the volute, improve the efficiency of the slurry pump, and realize the rapid design of the feed pump volute hydraulic force of the slurry preheater.

[0065] The impeller diameter is the diameter of the impeller of the slurry preheater feed pump. The pump specific speed can be calculated based on the flow rate, head, and rotational speed of the feed pump. The volute refers to the slurry preheater feed pump volute.

[0066] In some embodiments, the design method of the slurry preheater feed pump volute hydraulic force further comprises:

[0067] obtaining the flow rate, head, and rotational speed of the feed pump;

[0068] determining the pump specific speed and the volute outlet equivalent diameter based on the flow rate, the head, and the rotational speed;

[0069] determining the design result of the volute hydraulic force based on the base circle diameter, the height of the different sections, and the volute tongue section throat width, comprising:

[0070] determining the design result of the volute hydraulic force based on the volute outlet equivalent diameter, the base circle diameter, the height of the different sections, and the volute tongue section throat width.

[0071] In some embodiments, the design method of the slurry preheater feed pump volute hydraulic force further comprises:

[0072] determining the area of the eighth section based on the flow rate and the average flow velocity of the medium through the eighth section.

[0073] In some embodiments, determining the heights of different sections based on the area of the eighth section, the flow rate, the average flow velocity of the medium through the eighth section, and the radius of the top circular arc of the volute section and the width of the volute comprises:

[0074] determining the height of the eighth section based on the area of the eighth section and the radius of the top circular arc of the volute section and the width of the volute;

[0075] determining the height of the first section based on the flow rate, the average flow velocity of the medium through the eighth section, and the radius of the top circular arc of the volute section and the width of the volute;

[0076] determining the heights of different sections based on the height of the eighth section and the height of the first section.

[0077] In some embodiments, the formula for calculating the height of the first section is as follows:

[0078] wherein H1 is the height of the first section, V3 is the average flow velocity of the medium through the eighth section, r is the radius of the top circular arc of the volute section, B3 is the width of the volute, and Q is the flow rate of the feed pump.

[0079] In some embodiments, the formula for calculating the heights of different sections is as follows:

[0080] wherein Hn is the height of the nth section, 2≤n≤7, H1 is the height of the first section, and H8 is the height of the eighth section. n

[0081] In some embodiments, determining the design result of the volute hydraulic force based on the base circle diameter, the heights of different sections, and the throat width of the volute tongue section comprises:

[0082] determining the height value (L1) of the tongue position based on a preset relationship between the tongue placement angle and the specific speed, the throat width of the volute tongue section, and no casting fillet;

[0083] determining the design result of the volute hydraulic force based on the height value of the tongue position, the base circle diameter, the heights of different sections, and the throat width of the volute tongue section.

[0084] It can be understood that the height value of the tongue position is the height difference between the eighth section and the ninth section.

[0085] ​In one specific embodiment, in combination with FIG. 3, FIG. 4 and FIG. 5, the design method of the slurry preheater feed pump volute hydraulic force specifically includes:

[0086] According to the flow, head, and rotational speed of the slurry pump (i.e. the slurry preheater feed pump), the specific speed n of the pump is calculated s ; the formula is:

[0087] Q: flow (m 3 / h);

[0088] H: flow (m);

[0089] n: rotational speed (r / min);

[0090] The equivalent diameter D4 of the volute outlet is calculated:

[0091] K d coefficient (value range: 3.5-4.5);

[0092] The base circle diameter D3 is calculated according to the impeller diameter:

[0093] D2: impeller diameter (mm);

[0094] The volute width B3 is calculated:

[0095] B3 = B2 + 2δ + 2τ + C

[0096] C is a constant, and the value range is 6-10;

[0097] B2: impeller passage width (mm);

[0098] δ: impeller cover plate thickness (mm);

[0099] τ: impeller back blade height (mm);

[0100] The VIII section area F8 is calculated by using the velocity coefficient method:

[0101] Wherein:

[0102] K3: coefficient (can be determined by table lookup);

[0103] g: weight acceleration 9.81 (m / s 2 );

[0104] h: pump head (m);

[0105] V3: average flow rate of medium through the VIII section (m / s);

[0106] Calculate the height H1-H8 of the first to eighth section:

[0107] Wherein:

[0108] r is the radius of the top arc of each section of the volute, in mm, generally take the impeller cover plate thickness δ 2 times;

[0109] Wherein: n = 2-7, indicating the second to seventh section;

[0110] Calculate the throat width G of the volute tongue section:

[0111] First calculate the throat section area F9:

[0112] Take

[0113] According to the relationship between the tongue angle and the specific speed shown in Table 1, the throat width G of the tongue section, and the unmarked casting fillet (R5-10), L1 is rounded.

[0114] Table 1: Relationship between tongue angle and specific speed

[0115] Draw the eighth section, the tongue section IX and the outlet section X, so that they are smoothly transitioned, and at the same time tangent to the profile formed by the first to seventh sections, to form a complete volute, and round L and K.

[0116] Wherein, the tongue section IX: that is, the ninth section, indicating the cross-sectional shape of the diffuser section at the tongue position;

[0117] Outlet section X: indicating the cross-sectional shape of the diffuser section outlet, which is usually circular;

[0118] L: indicates the length of the diffuser section;

[0119] K: indicates the eccentricity, which is the distance between the diffuser section of the eccentric outlet volute and the inlet axis.

[0120] According to the above steps, through the combination of calculation and drawing, a relatively systematic and accurate design method of the hydraulic characteristics of the slurry pump volute can be obtained.

[0121] As shown in FIG. 5, the present application also provides a design device 500 for the hydraulic characteristics of a slurry preheater feeding pump volute, comprising:

[0122] The diameter calculation module 501 is configured to determine the base circle diameter based on the impeller diameter and the pump specific speed;

[0123] The first width calculation module 502 is configured to determine the volute width based on the impeller passage width, the impeller cover plate thickness and the impeller back blade height.

[0124] The height calculation module 503 is configured to determine the height of different sections based on the eighth cross section area of the feed pump, the flow, the average flow velocity of the medium passing through the eighth cross section, and the volute cross section top circular arc radius and the volute width.

[0125] The area calculation module 504 is configured to determine the throat cross section area 505 of the volute based on the eighth cross section area and the pump specific speed.

[0126] The second width calculation module 506 is configured to determine the volute tongue cross section throat width based on the throat cross section area and the volute cross section top circular arc radius.

[0127] The design result determination module 507 is configured to determine the design result of the volute hydraulic force based on the base circle diameter, the height of the different sections and the volute tongue cross section throat width.

[0128] The mineral slurry preheater feed pump volute hydraulic force design device provided by the above embodiment can implement the technical solutions described in the mineral slurry preheater feed pump volute hydraulic force design method embodiment, and the principles of the implementation of the above modules or units can be referred to the corresponding content in the mineral slurry preheater feed pump volute hydraulic force design method embodiment, which will not be described here.

[0129] As shown in FIG. 6, the present application also provides an electronic device 600. The electronic device 600 includes a processor 601, a memory 602 and a display 603. FIG. 6 only shows part of the components of the electronic device 600, but it should be understood that all the components shown are not required, and more or less components can be alternatively implemented.

[0130] The memory 602 can be an internal storage unit of the electronic device 600 in some embodiments, such as a hard disk or a memory of the electronic device 600. The memory 602 can also be an external storage device of the electronic device 600 in other embodiments, such as a plug-in hard disk, a smart media card (SMC), a secure digital (SD) card, a flash card, etc. equipped on the electronic device 600.

[0131] Further, the memory 602 can include both the internal storage unit and the external storage device of the electronic device 600. The memory 602 is used to store application software and various data installed on the electronic device 600.

[0132] The processor 601 may, in some embodiments, be a central processing unit (CPU), a microprocessor, or other data processing chip, for running program codes stored in the memory 602 or processing data, such as the design method of the slurry preheater feed pump volute hydraulic force in the present application.

[0133] The display 603 may, in some embodiments, be an LED display, a liquid crystal display, a touch liquid crystal display, an OLED (Organic Light-Emitting Diode) touch, or the like. The display 603 is used to display information of the electronic device 600 and to display a visualized user interface. The components 601-603 of the electronic device 600 communicate with each other through a system bus.

[0134] In some embodiments of the present application, when the processor 601 executes the design program of the slurry preheater feed pump volute hydraulic force in the memory 602, the following steps can be implemented:

[0135] Determine the base circle diameter based on the impeller diameter and the pump specific speed;

[0136] Determine the volute width based on the impeller passage width, the impeller cover plate thickness, and the impeller back blade height;

[0137] Determine the height of different sections based on the VIII section area of the feed pump, the flow, the average flow velocity of the medium passing through the VIII section, and the volute section top circular arc radius and the volute width;

[0138] Determine the throat section area of the volute based on the VIII section area and the pump specific speed;

[0139] Determine the volute tongue section throat width based on the throat section area and the volute section top circular arc radius;

[0140] Determine the design result of the volute hydraulic force based on the base circle diameter, the height of the different sections, and the volute tongue section throat width.

[0141] It should be understood that, in addition to the above functions, the processor 601 may, when executing the design program of the slurry preheater feed pump volute hydraulic force in the memory 602, also implement other functions, which can be referred to the description of the corresponding method embodiments.

[0142] Further, the type of the electronic device 600 mentioned in the embodiments of the present application is not specifically limited, and the electronic device 600 can be a portable electronic device such as a mobile phone, a tablet computer, a personal digital assistant (PDA), a wearable device, a laptop computer, and the like. Exemplary embodiments of the portable electronic device include, but are not limited to, a portable electronic device running an IOS, an android, a microsoft, or another operating system. The portable electronic device described above can also be another portable electronic device such as a laptop computer having a touch-sensitive surface (e.g., a touch panel), and the like. It should also be understood that, in some other embodiments of the present application, the electronic device 600 can also not be a portable electronic device, but a desktop computer having a touch-sensitive surface (e.g., a touch panel).

[0143] In yet another aspect, the present application also provides a non-transitory computer readable storage medium having stored thereon a computer program, which, when executed by a processor, implements the method for designing the volute hydraulic force of the feed pump of the slurry preheater provided by the above-mentioned methods, and the method comprises:

[0144] determining the base circle diameter based on the impeller diameter and the specific speed of the pump;

[0145] determining the volute width based on the impeller passage width, the impeller cover plate thickness, and the impeller back blade height;

[0146] determining the height of different sections based on the VIII section area of the feed pump, the flow rate, the average flow velocity of the medium passing through the VIII section, and the volute section top circular arc radius and the volute width;

[0147] determining the throat section area of the volute based on the VIII section area and the specific speed of the pump;

[0148] determining the volute tongue section throat width based on the throat section area and the volute section top circular arc radius;

[0149] determining the design result of the volute hydraulic force based on the base circle diameter, the height of the different sections, and the volute tongue section throat width.

[0150] Those skilled in the art can understand that all or part of the processes of the above-mentioned embodiments can be completed by a computer program instructing related hardware, and the program can be stored in a computer readable storage medium. The computer readable storage medium includes a magnetic disk, an optical disk, a read-only memory, a random access memory, and the like.

[0151] The design method, device and electronic equipment for the hydraulic design of the feed pump volute of the ore pulp preheater provided by the present application are described in detail above, and the principles and implementation manners of the present application are described by applying specific examples. The above description of the embodiments is only used to help understand the method of the present application and its core idea; meanwhile, for those skilled in the art, the specific implementation manners and application ranges will be changed according to the idea of the present application. In summary, the content of the specification should not be understood as a limitation of the present application.

Claims

1. A method of designing the hydraulic performance of a feedwell pump volute for a concentrate preheater, characterised in that, The method comprises the following steps: determining the base circle diameter based on the impeller diameter and the pump specific speed; determining the volute width based on the impeller passage width, the impeller cover plate thickness and the impeller back blade height; determining the height of different sections based on the eighth section area of the feed pump, the flow rate, the average flow rate of the medium passing through the eighth section, the volute section top arc radius and the volute width; determining the throat section area of the volute based on the eighth section area and the pump specific speed; determining the volute tongue section throat width based on the throat section area and the volute section top arc radius; determining the design result of the volute hydraulic force based on the base circle diameter, the height of different sections and the volute tongue section throat width.

2. The method of design of feedwell pump volute hydraulics of a concentrate preheater according to claim 1, characterized in that, The method further comprises the following steps: obtaining the flow rate, the head and the rotating speed of the feed pump; determining the pump specific speed and the volute outlet equivalent diameter based on the flow rate, the head and the rotating speed; determining the design result of the volute hydraulic force based on the base circle diameter, the height of different sections and the volute tongue section throat width, which comprises: determining the design result of the volute hydraulic force based on the volute outlet equivalent diameter, the base circle diameter, the height of different sections and the volute tongue section throat width.

3. The method of design of feedwell pump volute hydraulics of a concentrate preheater according to claim 2, characterized in that, The method further comprises the following steps: determining the eighth section area based on the flow rate and the average flow rate of the medium passing through the eighth section.

4. The method of design of feedwell pump volute hydraulics of a concentrate preheater according to claim 1, characterized in that, determining the height of different sections based on the eighth section area of the feed pump, the flow rate, the average flow rate of the medium passing through the eighth section, the volute section top arc radius and the volute width, which comprises: determining the eighth section height based on the eighth section area and the volute section top arc radius and the volute width; determining the first section height based on the flow rate, the average flow rate of the medium passing through the eighth section and the volute section top arc radius and the volute width; determining the height of different sections based on the eighth section height and the first section height.

5. The method of design of feedwell pump volute hydraulics of a concentrate preheater according to claim 4, characterized in that, The calculation formula of the first cross-sectional height is as follows: Wherein, H1 is the first section height, V3 is the average flow rate of the medium passing through the eighth section, r is the volute section top arc radius, B3 is the volute width, and Q is the flow rate of the feed pump.

6. The method of design of feedwell pump volute hydraulics of a concentrate preheater according to claim 4, wherein, The formula for calculating the height of different sections is as follows: wherein H n Hn is the nth cross-sectional height, 2 < n < 7, H1 is the first cross-sectional height, and H8 is the eighth cross-sectional height.

7. A method of designing the hydraulic characteristics of a feedwell volute for a concentrate preheater according to any one of claims 1 to 6, characterised in that, determining the design result of the volute hydraulic force based on the base circle diameter, the height of different sections and the volute tongue section throat width, which comprises: determining the height value of the tongue position based on the preset relationship between the tongue placement angle and the specific speed, the volute tongue section throat width and the un-annotated casted round angle; determining the design result of the volute hydraulic force based on the height value of the tongue position, the base circle diameter, the height of different sections and the volute tongue section throat width.

8. An apparatus for designing the hydraulic characteristics of a feedwell volute of a concentrate preheater, characterized in that, The method comprises the following steps: a diameter calculation module, configured to determine the base circle diameter based on the impeller diameter and the pump specific speed; a first width calculation module, configured to determine the volute width based on the impeller passage width, the impeller cover plate thickness and the impeller back blade height; a height calculation module, configured to determine the height of different sections based on the eighth section area of the feed pump, the flow rate, the average flow rate of the medium passing through the eighth section, the volute section top arc radius and the volute width; An area calculation module is configured to determine a throat section area of the volute based on the eighth section area and a pump specific speed; A second width calculation module is configured to determine a throat width of a volute tongue section based on the throat section area and a volute section top circular arc radius; A design result determination module is configured to determine a design result of volute hydraulic force based on the base circle diameter, the height of the different sections, and the throat width of the volute tongue section.

9. An electronic device, comprising: The computer program product comprises a memory and a processor, wherein, The memory is configured to store a program; The processor, coupled to the memory, is configured to execute the program stored in the memory to implement the steps of the method for designing the volute hydraulic force of the feed pump of the ore slurry preheater according to any one of claims 1 to 7.

10. A non-transitory computer-readable storage medium having stored thereon a computer program, characterized in that, The computer program product, when executed by the processor, implements the steps of the method for designing the volute hydraulic force of the feed pump of the ore slurry preheater according to any one of claims 1 to 7.

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