A high-pressure integrated-cast guide wheel and a high-pressure integrated-cast mold for a guide wheel

Abstract

The utility model belongs to the technical field of engineering machinery hydraulic torque converter, and relates to a high-pressure integrally-cast guide wheel and a high-pressure integrally-cast mold of the guide wheel. The utility model discloses an external shell, internal shell and a plurality of guide wheel blades, the external shell and the internal shell of the guide wheel are coaxially-arranged tubular structures, the double-shell coaxial structure ensures the geometric consistency of the flow channel, the pressure distribution is more uniform when hydraulic oil flows in the axial direction, and this is favorable for reducing turbulent flow and energy loss. The projection of the guide wheel blade in the axial direction of the external shell and the internal shell has no overlap, the blade has no overlap in the axial projection, a completely open casting channel is formed, high-pressure molten metal is allowed to fill the cavity at high speed, mutual impact of metal flow caused by the staggered arrangement of traditional blades is avoided, meanwhile, the mold is favorably opened, and the precision of high-pressure casting is favorably ensured.

Description

Technical Field

[0001] This utility model belongs to the technical field of hydraulic torque converters for engineering machinery, and relates to a high-pressure integrated casting guide wheel and a high-pressure integrated casting mold for the guide wheel. Background Technology

[0002] The guide vane of the hydraulic torque converter is one of the key components of the hydraulic torque converter. The manufacturing accuracy of its blade shape has a strong guiding effect on the internal flow field during the operation of the hydraulic torque converter. Lower blade manufacturing accuracy will result in poor uniformity of blade distribution in the circumferential direction, causing fluctuations in circulating hydraulic oil pressure and flow rate, which in turn leads to large fluctuations in the torque ratio, nominal torque and efficiency of the hydraulic torque converter, resulting in poor performance consistency of the hydraulic torque converter.

[0003] Due to the special configuration of the guide wheel blades, most existing hydraulic torque converter guide wheels adopt a split sand core casting process, which combines the various blade sand core sub-modules together and casts the blanks through centrifugal casting, low-pressure casting, and gravity casting.

[0004] The invention patent with publication (announcement) number CN113374850A and titled "An Invention Patent for a Guide Wheel Structure of a Hydraulic Torque Converter for Engineering Machinery" places the projection of the end face of the outer ring end of the blade onto the end face of the inner ring end of the blade, which facilitates demolding and improves the manufacturability of the blade.

[0005] The paper "Xiao Yi. Research on low-pressure casting process of guide wheel of complex aluminum alloy hydraulic torque converter [J]. Special Casting and Nonferrous Alloys, 2024, 44(8): 1150-1152" analyzes the structural characteristics of guide wheel blades and improves the parting process of guide wheel blade sand core by combining the mold structure of movable block core pulling. A combined oblique metal mold is proposed to prepare sand cores with integral parting process. Compared with the original combined sand core, the accuracy is improved.

[0006] The above-mentioned existing technologies all use hybrid molds composed of metal molds and sand core molds, which can only be used for gravity casting or low-pressure casting. Compared with high-pressure casting, the precision level is significantly different, and the casting precision is lower when used for high-pressure casting. Utility Model Content

[0007] The purpose of this utility model is to provide a high-pressure integrated casting guide wheel and a high-pressure integrated casting mold for the guide wheel, so as to solve the technical problem of low precision in high-pressure casting of mixed molds.

[0008] To achieve the above objectives, the present invention adopts the following technical solution:

[0009] In a first aspect, this utility model discloses a high-pressure integrally cast guide wheel, including an outer shell, an inner shell, and a plurality of guide wheel blades. The outer shell and the inner shell are coaxially arranged tubular structures, and the outer shell and the inner shell are connected by a plurality of guide wheel blades. The projections of the plurality of guide wheel blades in the axial direction of the outer shell and the inner shell do not overlap.

[0010] Secondly, this utility model also discloses a high-pressure integrated casting mold for a guide wheel, used for casting a high-pressure integrated casting guide wheel, including an upper parting mold and a lower parting mold;

[0011] The upper parting mold includes an upper membrane shell, a first annular inner membrane shell, a first annular outer membrane shell, and a plurality of upper parting streamlines. The first annular inner membrane shell, the first annular outer membrane shell, and the plurality of upper parting streamlines are fixedly connected to the upper membrane shell. The first annular inner membrane shell is located inside the first annular outer membrane shell and is coaxially arranged. The plurality of upper parting streamlines are located between the first annular inner membrane shell and the first annular outer membrane shell.

[0012] The lower parting mold includes a lower mold shell, a second annular inner mold shell, a second annular outer mold shell, and a plurality of lower parting streamlines. The second annular inner mold shell, the second annular outer mold shell, and the plurality of lower parting streamlines are all fixedly connected to the lower mold shell. The second annular inner mold shell is located inside the second annular outer mold shell and is coaxially arranged. The plurality of lower parting streamlines are located between the second annular inner mold shell and the second annular outer mold shell.

[0013] The first annular inner membrane shell and the second annular inner membrane shell are coaxial and have the same outer diameter, and the first annular outer membrane shell and the second annular outer membrane shell are coaxial and have the same inner diameter.

[0014] After the upper parting mold and the lower parting mold are engaged, a casting space for guide wheel blades is formed between the upper parting streamline and the lower parting streamline. The casting space for the inner shell is formed between the upper parting streamline and the first annular inner shell, and between the lower parting streamline and the second annular inner shell. The casting space for the outer shell is formed between the upper parting streamline and the first annular outer shell, and between the lower parting streamline and the second annular outer shell.

[0015] The casting spaces of adjacent guide wheel blades do not overlap in the axial direction of the first annular inner membrane shell.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] The outer and inner shells of this utility model's guide wheel are coaxially arranged tubular structures. This double-shell coaxial structure ensures geometric consistency of the flow channel, resulting in a more uniform pressure distribution when the hydraulic oil flows axially, which helps reduce turbulence and energy loss. The axial projections of the guide wheel blades on the outer and inner shells do not overlap, forming a completely open casting channel. This allows high-pressure molten metal to fill the mold cavity at high speed, avoiding the metal flow collisions caused by the traditional staggered blade layout. Simultaneously, it facilitates mold opening and helps ensure the precision of high-pressure casting.

[0018] This utility model mold includes an upper parting mold and a lower parting mold. In the mold, a first annular inner mold shell is located inside a first annular outer mold shell and arranged coaxially. A second annular inner mold shell is located inside a second annular outer mold shell and arranged coaxially. The first and second annular inner mold shells are coaxial and have the same diameter, as are the first and second annular outer mold shells. This helps avoid the segregation defects of traditional centrifugal casting and ensures the accuracy of high-pressure casting. The casting spaces of adjacent guide wheel blades do not overlap in the axial direction of the first annular inner mold shell. Therefore, the blades of the cast guide wheel do not overlap in the axial projection, forming a completely open casting channel. This allows high-pressure molten metal to fill the cavity at high speed, avoiding the collision of metal flows caused by the staggered arrangement of blades in traditional casting. Simultaneously, it facilitates mold opening and enables high-pressure casting. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the guide wheel structure according to an embodiment of the present utility model;

[0020] Figure 2 This is a partial structural diagram of the guide wheel blades, outer housing, and inner housing according to an embodiment of the present utility model;

[0021] Figure 3 This is a schematic diagram of the guide wheel blades in an embodiment of the present utility model;

[0022] Figure 4 This is a cross-sectional view of the guide wheel blades in an embodiment of the present utility model;

[0023] Figure 5 This is a partial view of the guide wheel structure according to an embodiment of the present utility model;

[0024] Figure 6 This is a schematic cross-sectional view of the mold according to an embodiment of the present invention;

[0025] Figure 7 This is a diagram showing the positional relationship between the mold and the guide wheel in an embodiment of this utility model.

[0026] Figure 8 This is a schematic diagram of the lower parting mold structure of the mold according to an embodiment of the present utility model.

[0027] Wherein: 10, outer shell; 20, guide wheel blade; 30, inner shell; 101, first straight segment; 301, second straight segment; 302, axis; 201, inner ring blade profile; 202, outer ring blade profile; 203, third straight segment; 204, fourth straight segment; 40, blade profile; 401, pressure surface streamline; 402, suction surface streamline; 403, intermediate rib line; 404, upper parting point; 405, upper parting mold straight segment; 406, lower parting point; 407, lower parting mold straight segment; 411, rib line start point; 412, rib line end point; 413, upper parting streamline segment; 414, lower parting streamline segment; 5 501. Upper parting mold; 502. Lower parting mold; 503. Upper mold shell; 504. First annular inner mold shell; 505. First annular outer mold shell; 506. Upper parting streamline section; 507. Lower mold shell; 508. Second annular inner mold shell; 509. Second annular outer mold shell; 510. Lower parting streamline section; 511. Upper parting streamline surface; 512. Upper parting inclined surface; 513. Lower parting streamline surface; 514. Lower parting inclined surface; 515. First upper parting mold plane; 516. Upper parting mold inclined surface; 517. Second upper parting mold plane; 518. First lower parting mold plane; 519. Lower parting mold inclined surface; 520. Second lower parting mold plane. Detailed Implementation

[0028] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0029] It should be noted that the terms "first," "second," etc., in the specification and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this utility model described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0030] The present invention will now be described in further detail with reference to the accompanying drawings:

[0031] Example 1:

[0032] See Figure 1 This utility model discloses a high-pressure integrated casting guide wheel, including an outer shell 10, an inner shell 30, and a plurality of guide wheel blades 20. The outer shell 10 and the inner shell 30 are coaxially arranged tubular structures. The coaxial structure of the double shells ensures the geometric consistency of the flow channel, making the pressure distribution more uniform when the hydraulic oil flows axially, which helps to reduce turbulence and energy loss. The outer shell 10 and the inner shell 30 are connected by a plurality of guide wheel blades 20, and the projections of the plurality of guide wheel blades 20 in the axial direction of the outer shell 10 and the inner shell 30 do not overlap. The non-overlapping axial projection of the blades forms a completely open casting channel, allowing high-pressure molten metal to fill the cavity at high speed, avoiding the collision of metal flows caused by the traditional staggered blade layout, and at the same time, facilitating mold opening.

[0033] In this embodiment, see Figure 1 The guide vanes 20 are distributed circumferentially along the inner housing 30 and arranged radially along the outer housing 10. This improves the uniformity of the circumferential distribution of the guide vanes 20, reduces fluctuations in circulating hydraulic oil pressure and flow rate caused by uneven vane distribution, and thus helps improve the stability of the torque ratio, nominal torque, and efficiency of the hydraulic torque converter, thereby enhancing the consistency of the hydraulic torque converter's performance.

[0034] In this embodiment, see Figure 1 The spacing between several of the guide wheel blades 20 is equal, which further improves the uniformity of the circumferential distribution of the guide wheel blades 20.

[0035] In this embodiment, see Figure 4 The cross-section of the guide wheel blade 20 includes a pressure surface streamline 401, a suction surface streamline 402, and an intermediate rib line 403. The pressure surface streamline 401 and the suction surface streamline 402 constitute the outer contour of the cross-section of the guide wheel blade 20. The pressure surface streamline 401 and the suction surface streamline 402 are located on both sides of the intermediate rib line 403. The distance from the intersection of the perpendicular line of the intermediate rib line 403 and the intersection of the pressure surface streamline 401 and the suction surface streamline 402 to the intermediate rib line 403 is equal.

[0036] In this embodiment, see Figure 4 The range of the cross-sectional coordinate distribution is as follows:

[0037] The intermediate bone line 403 includes a bone line start point 411 and a bone line end point 412. The pressure surface streamline 401 and the suction surface streamline 402 are both connected to the bone line start point 411 and the bone line end point 412 of the intermediate bone line 403.

[0038] Within the cross-section of the guide wheel blade 20, with the origin at the starting point 411 of the bone line and the axial direction of the inner shell 30 as the X-axis, in the Y-axis direction, the lowest point of the pressure surface streamline 401 is the lower parting point 406, and the highest point of the suction surface streamline 402 is the upper parting point 404. The curves containing the upper parting point 404, the starting point 411 of the bone line, and the lower parting point 406 form the upper parting streamline segment 413, and the curves containing the upper parting point 404, the ending point 412 of the bone line, and the lower parting point 406 form the upper and lower parting streamline segments 414. The Y-axis direction is perpendicular to the axial direction of the inner shell 30.

[0039] The distribution range of the upper streamline segment 413 in the X-axis direction is ( , The upper streamline segment 413 is distributed in the Y-axis direction within a range of ( , );

[0040] The upper streamline segment 413 is in ( , When the x-value of the upper fractal streamline segment 413 changes monotonically within the range, it exhibits a characteristic of first monotonically decreasing and then monotonically increasing.

[0041] The distribution range of the lower streamline segment 414 in the X-axis direction is ( , The lower streamline segment 414 is distributed in the Y-axis direction within a range of ( , );

[0042] The lower streamline segment 414 is in ( , When the x-value of the lower fractal streamline segment 414 changes monotonically within the range, it exhibits a characteristic of first increasing monotonically and then decreasing monotonically.

[0043] In this embodiment, the area of ​​the intersection of the guide wheel blade 20 and the inner housing 30 is smaller than the area of ​​the intersection of the guide wheel blade 20 and the outer housing 10.

[0044] See Figure 6 , Figure 7 and Figure 8 This embodiment also discloses a high-pressure integrated casting mold for a guide wheel, used for casting a high-pressure integrated casting guide wheel, including an upper parting mold 501 and a lower parting mold 502;

[0045] The upper parting mold 501 includes an upper mold shell 503, a first annular inner mold shell 504, a first annular outer mold shell 505, and a plurality of upper parting streamline portions 506. The first annular inner mold shell 504, the first annular outer mold shell 505, and the plurality of upper parting streamline portions 506 are fixedly connected to the upper mold shell 503. The first annular inner mold shell 504 is located inside the first annular outer mold shell 505 and is coaxially arranged. The plurality of upper parting streamline portions 506 are located between the first annular inner mold shell 504 and the first annular outer mold shell 505.

[0046] The lower parting mold 502 includes a lower mold shell 507, a second annular inner mold shell 508, a second annular outer mold shell 509, and a plurality of lower parting streamline portions 510. The second annular inner mold shell 508, the second annular outer mold shell 509, and the plurality of lower parting streamline portions 510 are all fixedly connected to the lower mold shell 507. The second annular inner mold shell 508 is located inside the second annular outer mold shell 509 and is coaxially arranged. The plurality of lower parting streamline portions 510 are located between the second annular inner mold shell 508 and the second annular outer mold shell 509.

[0047] The first annular inner membrane shell 504 and the second annular inner membrane shell 508 are coaxial and have the same outer diameter, and the first annular outer membrane shell 505 and the second annular outer membrane shell 509 are coaxial and have the same inner diameter. This helps to avoid the segregation defects of traditional centrifugal casting and ensure the accuracy of high pressure casting.

[0048] After the upper parting mold 501 and the lower parting mold 502 are engaged, a casting space for the guide wheel blade 20 is formed between the upper parting streamline portion 506 and the lower parting streamline portion 510. A casting space for the inner shell 30 is formed between the upper parting streamline portion 506 and the first annular inner shell 504 and between the lower parting streamline portion 510 and the second annular inner shell 508. A casting space for the outer shell 10 is formed between the upper parting streamline portion 506 and the first annular outer shell 505 and between the lower parting streamline portion 510 and the second annular outer shell 509.

[0049] The casting spaces of adjacent guide wheel blades 20 do not overlap in the axial direction of the first annular inner membrane shell 504. As a result, the blades of the cast guide wheel do not overlap in the axial projection, forming a completely open casting channel. This allows high-pressure molten metal to fill the cavity at high speed, avoiding the collision of metal flows caused by the traditional staggered blade layout. At the same time, it is beneficial for mold opening and for realizing high-pressure casting.

[0050] In this embodiment of the utility model, see Figure 6 The upper parting streamlined section 506 includes an upper parting streamlined surface 511 and an upper parting inclined surface 512;

[0051] The lower parting streamline section 510 includes a lower parting streamline surface 513 and a lower parting inclined surface 514;

[0052] The upper parting inclined surface 512 and the lower parting inclined surface 514 are completely fitted together, and a casting space for the guide wheel blade 20 is formed between the upper parting streamline surface 511 and the lower parting streamline surface 513.

[0053] In this embodiment of the present invention, the two junctions of the upper parting streamline surface 511 and the lower parting streamline surface 513 are respectively located at the highest and lowest points of the casting space of the guide wheel blade 20 in the set direction CD. The set direction CD is perpendicular to both the axial direction of the first annular inner membrane shell 504 and the radial direction of the first annular inner membrane shell 504.

[0054] In this embodiment of the utility model, see Figure 6 The upper parting inclined surface 512 includes a first upper parting plane 515, an upper parting inclined surface 516, and a second upper parting plane 517 connected in sequence. The first upper parting plane 515 is connected to the upper parting streamline surface 511 of the previous upper parting streamline portion 506, and the second upper parting plane 517 is connected to the upper parting streamline surface 511 of the next upper parting streamline portion 506.

[0055] The lower parting inclined surface 514 includes a first lower parting plane 518, a lower parting inclined surface 519, and a second lower parting plane 520 connected in sequence. The first lower parting plane 518 is connected to the lower parting streamline surface 513 of the previous lower parting streamline portion 510, and the second lower parting plane 520 is connected to the lower parting streamline surface 513 of the next lower parting streamline portion 510.

[0056] The first upper parting plane 515 and the first lower parting plane 518 are fitted together, the upper parting slope 516 and the lower parting slope 519 are fitted together, and the second upper parting plane 517 and the second lower parting plane 520 are fitted together.

[0057] In this embodiment of the present invention, a casting hole is provided on the first annular outer membrane shell 505 or the second annular outer membrane shell 509, and the casting hole is connected to the internal casting space.

[0058] Example 2:

[0059] See Figure 1 This utility model provides a high-pressure integrally cast guide wheel, which is composed of an outer shell 10, an inner shell 30 and a guide wheel blade 20;

[0060] See Figure 2 The outer shell 10 is formed by rotating a first straight segment 101 parallel to the axis 302 along the axis 302.

[0061] The internal shell 30 is formed by rotating a second straight line segment 301 parallel to the axis 302 along the axis 302.

[0062] See Figure 3 The guide wheel blade 20 is formed by connecting the inner ring blade profile 201 and the outer ring blade profile 202;

[0063] The inner ring blade profile 201 is located inside the inner housing 30;

[0064] The outer ring blade profile 202 is located inside the outer housing 10;

[0065] The heads of the outer ring blade profile 202 and the inner ring blade profile 201 are connected by a third straight segment 203.

[0066] The tails of the outer ring blade profile 202 and the inner ring blade profile 201 are connected by a fourth straight segment 204;

[0067] See Figure 4 , is the cross section of the guide wheel blade 20. The blade profile 40 of the cross section is composed of pressure surface streamline 401 and suction surface streamline 402 spliced ​​together, with an intermediate bone line 403 in the middle.

[0068] Furthermore, a perpendicular line is drawn from any point M on the intermediate bone line 403. Then the perpendicular line Distance to pressure surface streamline 401 and the distance to the streamline 402 of the suction surface equal;

[0069] Furthermore, in Figure 4 Within the coordinate system, the highest point in the y-direction on the suction surface streamline 402 of the guide wheel blade 20 is selected as the upper parting point 404, and the lowest point in the y-direction on the pressure surface streamline 401 of the blade is selected as the lower parting point 406.

[0070] The upper parting point 404 extends along the second direction CD to form an upper parting straight line segment 405;

[0071] The lower parting point 406 extends along the second direction CD to form a lower parting line segment 407; the upper parting line segment 405 and the lower parting line segment 407 are the intersection surfaces of the upper parting mold 501 and the lower parting mold 502;

[0072] The upper parting point 404 is located in the nose region of the suction surface streamline 402, and the lower parting point 406 is located at the end of the pressure surface streamline 401;

[0073] Furthermore, the lateral streamline from the upper subdivision point 404 to the bone line origin 411 to the lower subdivision point 406 is defined as the upper subdivision streamline segment 413;

[0074] Furthermore, the lateral streamline from the upper subdivision point 404 to the bone line endpoint 412 to the lower subdivision point 406 is defined as the lower subdivision streamline segment 414;

[0075] Furthermore, the distribution range of the upper fractal streamline segment 413 in the coordinate system is ( , (), , );

[0076] Furthermore, the distribution range of the lower fractal streamline segment 414 in the coordinate system is ( , (), , );

[0077] The upper streamline segment 413 is in ( , When the x-value of the upper fractal streamline segment 413 changes monotonically within the range, it exhibits a characteristic of first monotonically decreasing and then monotonically increasing, that is, there is one and only one trough in the x-direction.

[0078] The lower streamline segment 414 is in ( , When the x-value of the lower fractal streamline segment 414 changes monotonically within the range, it exhibits a characteristic of first increasing monotonically and then decreasing monotonically, that is, there is only one peak in the x-direction.

[0079] See Figure 5 From the front view of the impeller on the liquid inlet side or the liquid outlet side, there is no obstruction or ghosting between adjacent guide vane blades 20;

[0080] See Figure 6 , Figure 7 and Figure 8 This is the parting line diagram of the guide wheel blade along axis 302, consisting of upper parting mold 501 and lower parting mold 502, with the draft direction referenced. Figure 6 ;

[0081] The upper parting mold 501 is composed of an upper parting streamline surface 511, a first upper parting plane 515, an upper parting inclined surface 516, and a second upper parting plane 517, which are sequentially and repeatedly formed.

[0082] The lower parting mold 502 is composed of a lower parting streamline surface 513, a first lower parting plane 518, a lower parting inclined surface 519, and a second lower parting plane 520, which are sequentially and repeatedly formed.

[0083] For further details, please refer to [link / reference]. Figure 7 The upper parting mold 51 and the lower parting mold 52 are used together to form a high-pressure casting mold.

[0084] This invention provides a guide wheel structure for a hydraulic torque converter that can be used in high-precision integral high-pressure casting. First, the inner and outer circulation lines of the blades are constrained to be linear, facilitating mold release from both sides. Then, the variation patterns of the suction and pressure surface curves of the blades are constrained, dividing them into upper and lower mold surfaces. The upper mold surface is required to have exactly one trough in the x-direction, and the lower mold surface to have exactly one peak in the x-direction. Finally, from the front view of the impeller's liquid inlet or outlet side, there should be no obstruction or ghosting between adjacent blades. This facilitates the design of high-pressure molds on both sides.

[0085] When designing the high-pressure mold for the guide wheel, the above design allows for the demolding design of the guide wheel blades on both sides of the circulating circular axis. Unlike the previous sand core mold, an all-metal mold design can be used, eliminating the steps of combining sand cores or pulling out molds. At the same time, high-pressure casting is used, which improves the casting accuracy of the blades compared to low-pressure casting and gravity casting.

[0086] The above content is only for illustrating the technical concept of this utility model and should not be construed as limiting the scope of protection of this utility model. Any modifications made to the technical solution based on the technical concept proposed in this utility model shall fall within the scope of protection of this utility model.

Claims

1. A guide wheel cast in one piece under high pressure, characterized in that, It includes an outer shell (10), an inner shell (30) and a plurality of guide wheel blades (20). The outer shell (10) and the inner shell (30) are coaxially arranged tubular structures. The outer shell (10) and the inner shell (30) are connected by a plurality of guide wheel blades (20). The projections of the plurality of guide wheel blades (20) in the axial direction of the outer shell (10) and the inner shell (30) do not overlap.

2. The guide wheel of high-pressure integral casting according to claim 1, characterized in that, A plurality of the guide wheel blades (20) are distributed circumferentially along the inner housing (30), and the guide wheel blades (20) are arranged radially along the outer housing (10).

3. The guide wheel of high-pressure integral casting according to claim 1, characterized in that, The cross-section of the guide wheel blade (20) includes a pressure surface streamline (401), a suction surface streamline (402), and an intermediate rib line (403). The pressure surface streamline (401) and the suction surface streamline (402) constitute the outer contour of the cross-section of the guide wheel blade (20). The pressure surface streamline (401) and the suction surface streamline (402) are located on both sides of the intermediate rib line (403). The distance from the intersection of the perpendicular line of the intermediate rib line (403) with the pressure surface streamline (401) and the suction surface streamline (402) to the intermediate rib line (403) is equal.

4. The guide wheel of high-pressure integral casting according to claim 3, characterized in that, The range of cross-sectional coordinate distribution is as follows: The intermediate bone line (403) includes a bone line start point (411) and a bone line end point (412). The pressure surface streamline (401) and the suction surface streamline (402) are both connected to the bone line start point (411) and the bone line end point (412) of the intermediate bone line (403). Within the cross-section of the guide wheel blade (20), with the origin of the bone line starting point (411) and the axial direction of the inner shell (30) as the X-axis direction, in the Y-axis direction, the lowest point of the pressure surface streamline (401) is the lower parting point (406), and the highest point of the suction surface streamline (402) is the upper parting point (404). The curves where the upper parting point (404), the bone line starting point (411), and the lower parting point (406) are located form the upper parting streamline segment (413), and the curves where the upper parting point (404), the bone line ending point (412), and the lower parting point (406) are located form the upper and lower parting streamline segments (414). The Y-axis direction is perpendicular to the axial direction of the inner shell (30). The distribution range of the upper streamline segment (413) in the X-axis direction is ( , The upper streamline segment (413) is distributed in the Y-axis direction within a range of ( , ); The upper streamline segment (413) is in ( , When the x-value of the upper fractal streamline segment (413) changes monotonically within the range, it exhibits a characteristic of first monotonically decreasing and then monotonically increasing. The distribution range of the lower streamline segment (414) in the X-axis direction is ( , The lower streamline segment (414) is distributed in the Y-axis direction within a range of ( , ); The lower streamline segment (414) is in ( , When the x-value of the lower fractal streamline segment (414) changes monotonically within the range, it exhibits a characteristic of first increasing monotonically and then decreasing monotonically.

5. The guide wheel of high-pressure integral casting according to claim 1, characterized in that, The spacing between several of the guide wheel blades (20) is equal.

6. The guide wheel of high-pressure integral casting according to claim 1, characterized in that, The area of ​​the intersection of the guide wheel blade (20) and the inner housing (30) is smaller than the area of ​​the intersection of the guide wheel blade (20) and the outer housing (10).

7. A high-pressure integrated casting mold for a guide wheel, used for casting the high-pressure integrated casting guide wheel according to any one of claims 1 to 6, characterized in that, It includes an upper parting mold (501) and a lower parting mold (502); The upper parting mold (501) includes an upper membrane shell (503), a first annular inner membrane shell (504), a first annular outer membrane shell (505), and a plurality of upper parting streamlines (506). The first annular inner membrane shell (504), the first annular outer membrane shell (505), and the plurality of upper parting streamlines (506) are fixedly connected to the upper membrane shell (503). The first annular inner membrane shell (504) is located inside the first annular outer membrane shell (505) and is coaxially arranged. The plurality of upper parting streamlines (506) are located between the first annular inner membrane shell (504) and the first annular outer membrane shell (505). The lower parting mold (502) includes a lower mold shell (507), a second annular inner mold shell (508), a second annular outer mold shell (509), and a plurality of lower parting streamlines (510). The second annular inner mold shell (508), the second annular outer mold shell (509), and the plurality of lower parting streamlines (510) are all fixedly connected to the lower mold shell (507). The second annular inner mold shell (508) is located inside the second annular outer mold shell (509) and is coaxially arranged. The plurality of lower parting streamlines (510) are located between the second annular inner mold shell (508) and the second annular outer mold shell (509). The first annular inner membrane shell (504) is coaxial with the second annular inner membrane shell (508) and has the same outer diameter; the first annular outer membrane shell (505) is coaxial with the second annular outer membrane shell (509) and has the same inner diameter. After the upper parting mold (501) and the lower parting mold (502) are engaged, a casting space for the guide wheel blade (20) is formed between the upper parting streamline portion (506) and the lower parting streamline portion (510). A casting space for the inner shell (30) is formed between the upper parting streamline portion (506) and the first annular inner shell (504) and between the lower parting streamline portion (510) and the second annular inner shell (508). A casting space for the outer shell (10) is formed between the upper parting streamline portion (506) and the first annular outer shell (505) and between the lower parting streamline portion (510) and the second annular outer shell (509). The casting spaces of adjacent guide wheel blades (20) do not overlap in the axial direction of the first annular inner membrane shell (504).

8. The high-pressure integrated casting mold for a guide wheel according to claim 7, characterized in that, The upper parting streamline section (506) includes an upper parting streamline surface (511) and an upper parting inclined surface (512). The lower parting streamline section (510) includes a lower parting streamline surface (513) and a lower parting inclined surface (514). The upper parting inclined surface (512) and the lower parting inclined surface (514) are completely fitted together, and a casting space for the guide wheel blade (20) is formed between the upper parting streamline surface (511) and the lower parting streamline surface (513).

9. The high-pressure integrated casting mold for a guide wheel according to claim 8, characterized in that, The two junctions of the upper parting streamline surface (511) and the lower parting streamline surface (513) are located at the highest and lowest points of the casting space of the guide wheel blade (20) in a set direction (CD), which is perpendicular to both the axial direction and the radial direction of the first annular inner membrane shell (504).

10. A high-pressure integrated casting mold for a guide wheel according to claim 8, characterized in that, The upper parting inclined surface (512) includes a first upper parting plane (515), an upper parting inclined surface (516), and a second upper parting plane (517) connected in sequence. The first upper parting plane (515) is connected to the upper parting streamline surface (511) of the previous upper parting streamline section (506), and the second upper parting plane (517) is connected to the upper parting streamline surface (511) of the next upper parting streamline section (506). The lower parting inclined surface (514) includes a first lower parting plane (518), a lower parting inclined surface (519), and a second lower parting plane (520) connected in sequence. The first lower parting plane (518) is connected to the lower parting streamline surface (513) of the previous lower parting streamline portion (510), and the second lower parting plane (520) is connected to the lower parting streamline surface (513) of the next lower parting streamline portion (510). The first upper parting plane (515) and the first lower parting plane (518) are fitted together, the upper parting slope (516) and the lower parting slope (519) are fitted together, and the second upper parting plane (517) and the second lower parting plane (520) are fitted together.

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