Impeller and pump

Abstract

The utility model relates to the technical field of impellers, and discloses an impeller and a pump, the impeller comprises an impeller body assembly and a framework assembly, the impeller body assembly comprises a hub, a plurality of blades and a guide blade, the plurality of blades are connected with the hub, and the guide blade is connected with one side, deviating from the hub, of each blade; the framework assembly comprises a hub framework, a plurality of blade frameworks and a guide blade framework, the hub framework is arranged in the hub, the blade frameworks are arranged in the blades and connected with the hub framework, and the guide blade framework is arranged in the guide blades and connected with the blade frameworks. When the fluid enters the pump shell and flows towards the impeller, the fluid firstly makes contact with the guide vane, under disturbance of the guide vane, the fluid is driven to rotate preliminarily, the fluid after preliminary rotation makes contact with the blades on the hub, and under driving of the rotating blades, the fluid is discharged out of the pump shell. And then the flowing path of the fluid is further changed through the impeller, the situation that the fluid flows unevenly is reduced, pressure reduction is avoided, and the suction performance of the pump can be effectively enhanced.

Description

TECHNICAL FIELD

[0001] The utility model relates to impeller technical field, concretely relates to a kind of impeller and pump. BACKGROUND

[0002] Foam pump is a specially designed pump, mainly used for processing liquid containing foam, such as slurry in flotation process, froth slurry in mineral processing process, etc. The foam pump can effectively eliminate the foam in the slurry through special structural design.

[0003] The foam pump disclosed in Publication No. CN117404303A includes a pump body, a pump cover, an impeller, and a front guard plate. The pump body is fixedly connected with the pump cover and encloses a conveying cavity. The impeller is rotatably arranged in the conveying cavity. The front guard plate is located between the impeller and the pump cover. A sealed mounting cavity is provided between the front guard plate and the pump cover. The foam pump further includes a first driving member and an adjusting member. The first driving member is rotatably arranged on the pump cover and extends from the outer side of the pump cover into the mounting cavity. The adjusting member is rotatably arranged on the pump cover and located in the mounting cavity. A plurality of first wedges are provided on the side of the front guard plate close to the mounting cavity. Each first wedge is in the shape of an arc concentric with the front guard plate and is uniformly and spacedly arranged around the center of the front guard plate. Second wedges corresponding to the first wedges are provided on the adjusting member. A transmission unit is provided between the first driving member and the adjusting member. The rotation of the first driving member can drive the rotation of the adjusting member through the transmission unit. The rotation of the adjusting member can drive the front guard plate to move towards the impeller through the first wedges and the corresponding second wedges.

[0004] In the above-mentioned foam pump, the fluid is sucked into the pump shell through the cylindrical opening of the pump shell and comes into contact with the impeller in the pump shell. The fluid directly contacts the impeller, which changes the flow path of the fluid. Since the impeller is composed of a hub and a plurality of blades arranged on the hub, the flow path of the fluid containing foam is directly changed by the impeller at the inlet of the impeller, which may cause uneven flow and increase pressure drop, thereby reducing the suction performance of the pump. SUMMARY

[0005] The purpose of the utility model is to overcome the above technical deficiencies and provide an impeller and a pump to solve the technical problem of uneven flow at the inlet of the impeller in the prior art, which reduces the suction performance of the pump.

[0006] To achieve the above technical purpose, the utility model adopts the following technical scheme:

[0007] In a first aspect, the utility model provides an impeller, which includes:

[0008] A wheel body assembly includes a hub, a plurality of blades, and at least one guide vane. The plurality of blades are connected to the hub and are spacedly distributed along the circumference of the hub. The guide vane is connected to the side of the blade away from the hub.

[0009] The hub skeleton is arranged in the hub, the vane skeleton is arranged in the vane and connected with the hub skeleton, and the guide vane skeleton is arranged in the guide vane and connected with the vane skeleton.

[0010] In one of the embodiments, at least part of the guide vanes are curved towards the edge of the hub in a direction away from the hub.

[0011] In one of the embodiments, the guide vanes are smaller in size along the guide direction of the vanes than the vanes.

[0012] In one of the embodiments, the guide vanes are gradually reduced in cross-sectional size in a direction away from the hub.

[0013] In one of the embodiments, the guide vane skeleton is formed separately from the vane skeleton.

[0014] In one of the embodiments, the vanes are arc-shaped, and one side of the vanes is arranged at the outer edge of the hub, and the other side extends towards the center of the hub.

[0015] In one of the embodiments, the guide vanes are arranged on the side of the vanes close to the center of the hub.

[0016] In one of the embodiments, the guide vanes are arranged one by one corresponding to the vanes, and a plurality of the vanes and a plurality of the guide vanes are arranged in a circumferential direction of the hub.

[0017] In one of the embodiments, the guide vane skeleton is a flexible structure.

[0018] In a second aspect, the utility model also provides a pump, including the above-mentioned impeller.

[0019] Compared with the prior art, the impeller and the pump provided by the utility model, when fluid enters the pump shell and flows towards the impeller, the guide vanes are firstly contacted, under the disturbance of the guide vanes, the fluid is preliminarily rotated, the preliminarily rotated fluid contacts the vanes on the hub, under the driving of the rotating vanes, the fluid is discharged from the pump shell, by arranging the guide vanes, the guide vanes preliminarily agitate the fluid, so that the fluid is preliminarily rotated, then the flow path of the fluid is further changed by the impeller, the uneven fluid flow condition is reduced, the pressure reduction is avoided, and the suction performance of the pump can be effectively enhanced.

[0020] Secondly, since the guide vane is arranged on the side of the blade away from the hub, the distance between the guide vane and the roller is relatively far, so that the reaction torque of the fluid that the guide vane can bear is reduced, therefore, in the embodiment, the guide vane skeleton is arranged in the guide vane, the connection strength between the guide vane and the blade and the hub can be enhanced by arranging the guide vane skeleton, the impact resistance and the strength of the hub and the blade can be enhanced by arranging the hub skeleton and the blade skeleton in the hub and the blade, the vibration and the deformation of the impeller can be reduced when the impeller rotates at high speed by connecting the guide vane skeleton, the blade skeleton and the hub skeleton in sequence, so that the skeletons can form an integral whole, and the load can be more evenly distributed when the whole impeller bears external force, so that the local stress concentration is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is a sectional view of the impeller provided by an embodiment of the utility model;

[0022] Figure 2 is a structural schematic view of the impeller provided by an embodiment of the utility model.

[0023] BRIEF DESCRIPTION OF DRAWINGS:

[0024] Wheel body assembly 1; Hub 11; Blade 12; Guide vane 13; Skeleton assembly 2; Hub skeleton 21; Blade skeleton 22; Guide vane skeleton 23. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical scheme and advantages of the utility model more clearly, the following will be further described in detail by combining with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model, and are not used to limit the utility model.

[0026] In order to solve the technical problem that the uneven flow at the inlet of the impeller reduces the suction performance of the pump, the utility model provides an impeller, which can solve the problem that the uneven flow at the inlet of the impeller reduces the suction performance of the pump in the prior art.

[0027] It should be noted that the impeller in the utility model is used in but not limited to foam pumps and the like, in order to facilitate the description, in the utility model, only the application of the impeller in the foam pump is taken as an example for description, and the principle of the application of the impeller in other types of equipment is substantially the same as that in the foam pump, which will not be described here.

[0028] Please refer to Figure 1 , Figure 1For the structure diagram of the impeller in an embodiment of the utility model, the impeller comprises a wheel body assembly 1 and a framework assembly 2, the wheel body assembly 1 comprises a hub 11, a plurality of blades 12 and at least one guide vane 13, the plurality of blades 12 are connected to the hub 11 and are spaced apart along the circumference of the hub 11, and the guide vane 13 is connected to the side of the blade 12 away from the hub 11; the framework assembly 2 comprises a hub framework 21, a plurality of blade frameworks 22 and a guide vane framework 23, the hub framework 21 is built-in in the hub 11, the blade framework 22 is built-in in the blade 12 and is connected to the hub framework 21, and the guide vane framework 23 is built-in in the guide vane 13 and is connected to the blade framework 22.

[0029] When fluid enters the pump shell and flows towards the impeller, the guide vane 13 is contacted first, under the disturbance of the guide vane 13, the fluid is driven to rotate initially, and the fluid after initial rotation contacts the blade 12 on the hub 11, under the driving of the rotating blade 12, the fluid is discharged from the pump shell, by arranging the guide vane 13, the guide vane 13 preliminarily agitates the fluid, so that the fluid is preliminarily rotated, and then the flow path of the fluid is further changed by the impeller, the uneven fluid flow condition is reduced, the pressure reduction is avoided, and the suction performance of the pump can be effectively enhanced.

[0030] Secondly, since the guide vane 13 is arranged on the side of the blade 12 away from the hub 11, the distance between the guide vane 13 and the roller is relatively far, so that the reaction torque of the fluid that the guide vane 13 can bear is reduced, therefore, in the embodiment, the guide vane framework 23 is arranged in the guide vane 13, the connection strength between the guide vane 13 and the blade 12 and the hub 11 can be enhanced by arranging the guide vane framework 23, the impact resistance and the strength of the hub 11 and the blade 12 can be enhanced by arranging the hub framework 21 and the blade framework 22 in the hub 11 and the blade 12, the guide vane framework 23, the blade framework 22 and the hub framework 21 are sequentially connected, so that the frameworks can form a whole, the vibration and the deformation of the impeller can be reduced when the impeller rotates at high speed; meanwhile, the frameworks are connected in a mode that can more effectively disperse and transmit the load, so that the load can be more evenly distributed when the whole impeller bears external force, and the local stress concentration is reduced.

[0031] As shown in FIGS. Figure 1 and Figure 2 In one of the embodiments, at least part of the guide vane 13 is bent towards the edge of the hub 11 in the direction away from the hub 11.

[0032] The bending of the guide vanes 13 towards the edge of the hub 11 can more effectively guide the fluid to flow along the circumference of the impeller, reduce the backflow and turbulence of the fluid inside the impeller, and improve the guiding efficiency of the fluid; the bending of the guide vanes 13 can increase the kinetic energy of the fluid when passing through the impeller, because the fluid is accelerated under the guidance of the guide vanes 13, thereby improving the output power of the impeller; the bending of the guide vanes 13 helps to form a more uniform pressure distribution inside the impeller, reduces the pressure gradient, and thus reduces the energy loss caused by the pressure difference.

[0033] As shown in the drawings, Figure 1 in one of the embodiments, the size of the guide vanes 13 along the guide of the blades 12 is smaller than the size of the blades 12 along the guide.

[0034] Through the above arrangement, the size of the guide vanes 13 is smaller than the size of the blades 12, so that the guide vanes 13 can at least partially extend into the fluid inlet of the pump shell, so that the guide vanes 13 can preliminarily disturb the fluid at the fluid inlet of the pump shell, and reduce the turbulence and vortex of the fluid when contacting the blades 12.

[0035] As shown in the drawings, Figure 1 in one of the embodiments, the cross-sectional size of the guide vanes 13 gradually decreases in the direction away from the hub 11.

[0036] Through the above arrangement, when the guide vanes 13 disturb the fluid at the fluid inlet of the pump shell, the contact area between the fluid and the guide vanes 13 gradually increases along the flow direction, so that the fluid flow can be gradually guided, and the reverse force applied to the guide vanes 13 can be gradually increased, which can optimize the pressure distribution inside the impeller, so that the pressure gradient of the fluid when passing through the guide vanes 13 is more gentle, and the energy loss caused by the pressure mutation is reduced; the gradually increasing area of the fluid contacting the guide vanes 13 helps to reduce the impact of the fluid on the guide vanes 13, thereby reducing the noise and vibration, and improving the running stability of the equipment.

[0037] It should be understood that the number of guide vanes 13 can be one, two, and multiple, etc., and the guide vanes 13 can correspond to the blades 12 one by one, multiple guide vanes 13 can correspond to one blade 12, or one guide vane 13 can correspond to multiple blades 12. Specifically, as shown in the drawings, Figure 2 in one of the embodiments, the number of guide vanes 13 is multiple, and the multiple guide vanes 13 are arranged one by one corresponding to the blades 12 and are spaced apart along the circumference of the hub 11.

[0038] It should be understood that the hub skeleton 21, the blade skeleton 22, and the guide vane skeleton 23 can be integrally formed or separately formed. Specifically, in one of the embodiments, the guide vane skeleton 23 is separately formed from the blade skeleton 22.

[0039] Since the guide vane 13 and the blade 12 are both three-dimensional curved surface structures, in the embodiment, the guide vane skeleton 23 and the blade skeleton 22 are formed separately, the guide vane skeleton 23 and the blade skeleton 22 can be manufactured as independent components, without manufacturing an integral three-dimensional curved surface structure, reducing the difficulty of manufacturing and processing the guide vane skeleton 23 and the blade skeleton 22, and the blade skeleton 22 and the guide vane skeleton 23 are assembled into an integral structure after being manufactured respectively, realizing the connection between the blade skeleton 22 and the guide vane skeleton 23.

[0040] In order to guide the fluid to move along the set trajectory through the rotating blade 12 and the guide vane 13, in one of the embodiments, the blade 12 is arc-shaped, and one side of the blade 12 is arranged at the outer edge of the hub 11, and the other side extends towards the center of the hub 11.

[0041] Through the above arrangement, in the process of rotation of the impeller, the hub 11, the blade 12 and the guide vane 13 are driven to rotate, since the blade 12 is arc-shaped and extends towards the center of the hub 11, the rotating blade 12 drives the flow to rotate towards the outer edge of the hub 11, so that the fluid flows towards the outer edge of the hub 11 under the trend of the rotating blade 12.

[0042] Since the guide vane 13 needs to extend to the inlet hole of the pump shell to enhance the suction performance through the guide vane 13, the guide vane 13 is arranged at the side of the blade 12 close to the center of the hub 11.

[0043] Through the above arrangement, the guide vane 13 is arranged close to the center of the hub 11, so that the size of the structure formed by the plurality of guide vanes 13 can extend into the inlet hole of the pump shell.

[0044] It should be understood that the guide vane skeleton 23 can be a fixed structure or a flexible structure, and specifically, in one of the embodiments, the guide vane skeleton 23 is a flexible structure.

[0045] Since the guide vane 13 is a complex curved surface structure, and the guide vane skeleton 23 is built in the guide vane 13 and needs to be arranged following the shape of the guide vane 13, so that the shape of each guide vane skeleton 23 is different, in the embodiment, the guide vane skeleton 23 is arranged as a flexible structure, the flexible guide vane skeleton 23 can adaptively deform and adapt to the curved structure of the guide vane 13, reducing the processing difficulty and manufacturing cost.

[0046] Specifically, the flexible structure can be a flexible metal strip, a metal block, etc.

[0047] It should be understood that the materials of the hub skeleton 21, the blade skeleton 22, the guide vane skeleton 23, the hub 11, the blade 12 and the guide vane 13 can be metal, ceramic and plastic, etc.

[0048] In one of the embodiments, the blade 12 and the guide vane 13 are made of ceramic, and the hub skeleton 21, the blade skeleton 22 and the guide vane skeleton 23 are made of metal.

[0049] By setting the blade 12 and the guide vane 13 to be made of ceramic, the ceramic has high hardness and wear resistance, and is resistant to acid and alkali, and can withstand the erosion of the fluid without reacting with the fluid during contacting the fluid; by setting the hub skeleton 21, the blade skeleton 22 and the guide vane skeleton 23 to be made of metal, the metal has good structural strength and impact resistance, and can disperse and share the impact borne by the hub 11, the blade 12 and the guide vane 13, so as to avoid the hub 11, the blade 12 and the guide vane 13 from being broken.

[0050] The utility model also relates to a kind of pumps, including the above impeller.

[0051] The above detailed embodiments of the utility model do not constitute a limitation on the protection scope of the utility model. Any other corresponding changes and modifications made according to the technical concept of the utility model shall be included in the protection scope of the utility model claims.

Claims

1. An impeller, characterized by, The impeller comprises: a wheel body assembly, comprising a wheel hub, a plurality of blades connected to the wheel hub and spaced along the circumference of the wheel hub, and at least one guide vane connected to the side of the blades away from the wheel hub; and a framework assembly, comprising a wheel hub framework, a plurality of blade frameworks and a guide vane framework, the wheel hub framework being built in the wheel hub, the blade frameworks being built in the blades and connected to the wheel hub framework, and the guide vane framework being built in the guide vane and connected to the blade frameworks.

2. The impeller according to claim 1, wherein: at least part of the guide vane is curved towards the edge of the wheel hub in the direction away from the wheel hub.

3. The impeller according to claim 1, wherein: the size of the guide vane along the direction of the blade is smaller than the size of the blade along the direction of the blade.

4. The impeller according to claim 1, wherein: the cross-sectional size of the guide vane gradually decreases in the direction away from the wheel hub.

5. The impeller according to claim 1, wherein: the guide vane framework and the blade framework are formed separately.

6. The impeller according to claim 1, wherein: the blade is arc-shaped, and one side of the blade is arranged at the outer edge of the wheel hub, and the other side extends towards the center of the wheel hub.

7. The impeller according to claim 6, wherein: the guide vane is arranged at the side of the blade close to the center of the wheel hub.

8. The impeller according to claim 7, wherein: the guide vane is arranged one-to-one with the blade, and a plurality of the blades and a plurality of the guide vanes are arranged spaced along the circumference of the wheel hub.

9. The impeller according to claim 8, wherein: the guide vane framework is a flexible structure. The impeller according to any one of claims 1 to 9.

10. A pump characterized by, ​

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