Water pump

Abstract

The invention belongs to the field of water pumps, and particularly relates to a water pump which comprises a pump body, a water inlet pipe and a water outlet pipe. The impeller main body is mounted in the cavity of the pump body, the impeller main body comprises an upper wafer, a lower wafer and a plurality of single-arc blades, the plurality of single-arc blades are arrayed along the circumference and are positioned between the upper wafer and the lower wafer, and a mounting hole site penetrates through the lower wafer; the impeller seat comprises a base and a plurality of three-dimensional twisted blades circumferentially arrayed on the base, the base is in butt joint with the mounting hole site, the three-dimensional twisted blades are in one-to-one correspondence with the single-arc blades, the curvature of the single-arc blades is different from that of the three-dimensional twisted blades, and the single-arc blades are in one-to-one correspondence with the single-arc blades. The corresponding single-arc blades and the corresponding three-dimensional twisted blades are jointly spliced into impeller blades, and the multiple impeller blades and the inner wall of the cavity jointly define a plurality of closed cavities used for pump injection. The impeller machining process can be simplified, and the machining cost can be reduced.

Description

Technical Field

[0001] The invention belongs to the field of water pumps, and in particular relates to a water pump. Background Art

[0002] Water pumps are widely used in many industrial and civil fields, and the impeller is one of the core components of the water pump. Its structural design and performance directly affect the working efficiency and operation stability of the water pump. The traditional water pump impeller usually adopts an integrated structure. Although this structure can meet the basic use requirements to a certain extent, it also has some limitations. When processing impellers with twisted blades, it is difficult to demold, or the demolding process is complicated and the processing cost is high. For example, in the Chinese invention patent application with publication number CN105179304A, a molding mold for a plastic anti-corrosion and wear-resistant pump and its impeller is disclosed. Although the molding mold can produce blades with different curvatures, the impeller flow channel slider is divided into three groups and must be taken out in sequence, which will cause the demolding process to be complicated, increase production costs, and it is difficult to design an automatic demolding mechanism, which cannot meet economic production needs. Summary of the invention

[0003] The object of the present invention is to provide a water pump, aiming to solve the technical problem in the prior art that the impeller processing process is complicated and the cost is high.

[0004] To achieve the above-mentioned purpose, an embodiment of the present invention provides a water pump, comprising: a pump body, which has a cavity inside; an impeller body, which is installed in the cavity of the pump body, the impeller body comprising an upper disc, a lower disc and a plurality of single arc blades, the plurality of single arc blades are arranged along a circumferential array and are located between the upper disc and the lower disc, and the lower disc is penetrated by a mounting hole; an impeller seat, the impeller seat comprising a base and a plurality of three-dimensional twisted blades arranged along a circumferential array on the base, the base is connected to the mounting hole, the plurality of three-dimensional twisted blades correspond one-to-one to the plurality of single arc blades, the single arc blades and the three-dimensional twisted blades have different curvatures, the corresponding single arc blades and the three-dimensional twisted blades are jointly spliced ​​into impeller blades, and the plurality of impeller blades and the inner wall of the cavity together enclose a plurality of closed chambers for pumping.

[0005] Optionally, the upper circular piece is arranged in parallel with the lower circular piece, the single circular blade is arranged perpendicular to both the upper circular piece and the lower circular piece, and the single circular blade and the three-dimensional twisted blade have a smooth transition at the position where they are spliced ​​with each other.

[0006] Optionally, six of the single arc blades and six of the three-dimensional twisted blades are provided.

[0007] Optionally, the single arc blade is provided with a first hot melt column protruding downward, the base is provided with a first matching hole at a position corresponding to the first hot melt column, the first hot melt column is plugged into the first matching hole, the three-dimensional twisted blade is provided with a second hot melt column protruding upward, the upper disc is provided with a second matching hole at a position corresponding to the second hot melt column, the second hot melt column is plugged into the second matching hole, and the impeller body and the impeller seat are connected to each other by hot riveting through the first hot melt column and the second hot melt column.

[0008] Optionally, the single arc blade is provided with a groove at one end close to the three-dimensional twisted blade, and the groove extends in a vertical direction. The three-dimensional twisted blade is provided with a third hot melt column at one end close to the single arc blade, and the third hot melt column extends in a vertical direction and is placed in the groove. The upper disc is provided with a third matching hole at a position corresponding to the third hot melt column, and the third hot melt column is plugged into the third matching hole. The impeller body and the impeller seat are hot-riveted to each other through the third hot melt column.

[0009] Optionally, a boss is protruding upward from the top surface of the upper disc, and a mounting groove is provided in the boss, and the mounting groove is used to place the impeller ring.

[0010] Optionally, the second matching hole is located on the inner side of the boss, and the third matching hole is located on the outer side of the boss.

[0011] Optionally, a wire groove is provided on the bottom surface of the upper disc, the wire groove continues the curvature of the single arc blade, and the three-dimensional twisted blade is clamped in the wire groove.

[0012] Optionally, a ring-shaped mounting wall is protruding downward from the bottom surface of the base, and a plurality of teeth are formed on the inner wall of the mounting wall in a vertical direction, and the teeth are used to cooperate with the internal magnet.

[0013] Optionally, the installation wall is penetrated by a plurality of circular holes along its radial direction, and the circular holes are used for inserting bolts to connect with the magnetic drive part of the water pump.

[0014] Compared with the prior art, the above one or more technical solutions in a water pump provided by an embodiment of the present invention have at least one of the following technical effects: multiple single arc blades correspond one-to-one to multiple three-dimensional twisted blades and are spliced ​​together to form impeller blades. This spliced ​​blade structure has unique advantages. On the one hand, according to the principles of fluid dynamics, a more reasonable blade shape and twisting angle can be designed, so that the impeller can better adapt to the flow characteristics of the fluid during operation, improve the fluid delivery efficiency, and reduce energy loss; on the other hand, the impeller is divided into two parts for injection molding, and the two parts can be spliced ​​into one after separate injection molding. The mold only needs two runner sliders to complete the injection molding of the blades, which simplifies the mold structure, improves the mold molding efficiency and reduces the processing cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0016] Figure 1 It is a schematic structural diagram of an impeller body and an impeller seat in a water pump in an embodiment of the present invention in an assembled state;

[0017] Figure 2 for Figure 1 The structural diagram of the other side;

[0018] Figure 3 is a schematic structural diagram of an impeller body in an embodiment of the present invention;

[0019] Figure 4 is a schematic structural diagram of the other side of the impeller body in an embodiment of the present invention;

[0020] Figure 5 Schematic diagram of the structure of the impeller seat in the embodiment of the present invention;

[0021] Figure 6 is a schematic structural diagram of the other side of the impeller seat in an embodiment of the present invention;

[0022] Figure 7 It is a schematic diagram of the longitudinal cross-sectional structure of the impeller body and the impeller seat in the assembled state in the embodiment of the present invention;

[0023] Figure 8 for Figure 7 Schematic diagram of the cross-sectional structure along the AA direction.

[0024] Among them, the reference numerals in the figure are:

[0025] Impeller body 100, upper disc 110, second matching hole 111, wire groove 112, boss 113, third matching hole 114, mounting groove 115, lower disc 120, mounting hole position 121, single arc blade 130, first hot melt column 131, groove 132;

[0026] The impeller seat 200 , the base 210 , the first matching hole 211 , the three-dimensional twisted blade 220 , the second hot melt column 221 , the third hot melt column 222 , the installation wall 230 , the tooth opening 231 , and the circular hole 232 . DETAILED DESCRIPTION

[0027] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the embodiments of the present invention, and should not be construed as limiting the present invention.

[0028] In the description of the embodiments of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0029] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0030] In the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0031] like Figures 1 to 8As shown, the present invention provides a water pump, including a pump body (not shown in the figure), an impeller body 100 and an impeller seat 200.

[0032] The pump body has a cavity inside, and is installed in the cavity of the pump body. The impeller body 100 includes an upper disc 110, a lower disc 120 and a plurality of single arc blades 130. The plurality of single arc blades 130 are arranged along a circumferential array and are located between the upper disc 110 and the lower disc 120. The lower disc 120 is penetrated with a mounting hole 121. The impeller seat 200 includes a base 210 and a plurality of three-dimensional twisted blades 220 arranged circumferentially on the base 210. The base 210 is docked with the mounting hole 121. The inner diameter of the mounting hole 121 is adapted to the outer diameter of the base 210. The plurality of three-dimensional twisted blades 220 correspond one to one with the plurality of single arc blades 130. The single arc blades 130 and the three-dimensional twisted blades 220 have different curvatures. The corresponding single arc blades 130 and the three-dimensional twisted blades 220 are jointly spliced ​​into impeller blades. The plurality of impeller blades and the inner wall of the cavity jointly enclose a plurality of closed chambers for pumping. The whole after the impeller body 100 and the impeller seat 200 are assembled can be called an impeller.

[0033] It can be understood that multiple single arc blades 130 correspond one-to-one with multiple three-dimensional twisted blades 220 and are spliced ​​together to form impeller blades. This spliced ​​blade structure has unique advantages. On the one hand, according to the principles of fluid dynamics, a more reasonable blade shape and twist angle can be designed, so that the impeller can better adapt to the flow characteristics of the fluid during operation, improve the fluid delivery efficiency, and reduce energy loss; on the other hand, the impeller is divided into two parts for injection molding, and the two parts can be spliced ​​into one after separate injection molding. The mold only needs two runner sliders to complete the injection molding of the blades, which simplifies the mold structure, improves the mold molding efficiency and reduces the processing cost.

[0034] like Figures 1 to 4 and Figure 7As shown, in one embodiment of the present invention, the upper disc 110 is arranged in parallel with the lower disc 120, and the single arc blade 130 is arranged perpendicular to the upper disc 110 and the lower disc 120, wherein the single arc blade 130 and the three-dimensional twisted blade 220 are smoothly transitioned at the position where they are spliced ​​to each other, that is, the three-dimensional twisted blade 220 continues the curvature of the single arc blade 130 and extends and has a certain twist angle. By setting the above structure, the impeller blade formed by splicing the single arc blade 130 and the three-dimensional twisted blade 220 can have a double curvature, thereby improving the operation efficiency of the water pump. Specifically, the single arc blade 130 and the three-dimensional twisted blade 220 are both provided with 6 blades, which can not only ensure that the impeller has sufficient strength and rigidity to meet the performance requirements of the water pump, but also avoid the problems such as a substantial increase in manufacturing costs caused by too many blades and possible liquid flow disturbances, thereby achieving a good balance between performance and cost, and having high economy and practicality.

[0035] like Figure 4 and Figure 5 As shown, in one embodiment of the present invention, the single arc blade 130 is provided with a first hot melt column 131 protruding downward, the base 210 is provided with a first matching hole 211 at a position corresponding to the first hot melt column 131, and the first hot melt column 131 is plugged and matched with the first matching hole 211, and the three-dimensional twisted blade 220 is provided with a second hot melt column 221 protruding upward, and the upper disc 110 is provided with a second matching hole 111 at a position corresponding to the second hot melt column 221, and the second hot melt column 221 is plugged and matched with the second matching hole 111. The single arc blade 130 and the three-dimensional twisted blade 220 are mutually positioned by the hot melt column structure arranged on each other, and the impeller body 100 and the impeller seat 200 are connected to each other by heat riveting through the first hot melt column 131 and the second hot melt column 221, without the need for fastener assembly, which can improve the assembly efficiency and strengthen the reliability of the connection between the impeller body 100 and the impeller seat 200. Compared with traditional bolt connection methods, the hot riveting connection method is simpler and faster to operate, does not require additional fasteners, reduces assembly links and assembly time, reduces labor costs and assembly error rate, and improves production efficiency and product quality. The first hot melt column 131 and the second hot melt column 221 can be set to 6.

[0036] like Figure 4 and Figure 5As shown, in one embodiment of the present invention, the single arc blade 130 is provided with a groove 132 at one end close to the three-dimensional twisted blade 220, and the groove 132 extends in the vertical direction. The three-dimensional twisted blade 220 is provided with a third hot melt column 222 at one end close to the single arc blade 130, and the third hot melt column 222 extends in the vertical direction and is placed in the groove 132. The upper disc 110 is provided with a third matching hole 114 at a position corresponding to the third hot melt column 222, and the third hot melt column 222 is plugged and matched with the third matching hole 114. Through the plug-in matching of the third hot melt column 222 and the third matching hole 114 at the blade joint, the relative position of the impeller body 100 and the impeller seat 200 can be quickly located, and it is conducive to quickly and accurately docking the single arc blade 130 and the three-dimensional twisted blade 220, and it can effectively prevent the blade from displacement or deformation when subjected to force. It is understandable that the impeller body 100 and the impeller seat 200 can be connected by heat riveting through the third hot melt column 222, further enhancing the connection reliability between the impeller body 100 and the impeller seat 200. In addition, the shape of the groove 132 includes but is not limited to an arc groove, a square groove, a dovetail groove or an Ω-shaped groove, and the third hot melt column 222 can be set to 6.

[0037] like Figure 4 As shown, in one embodiment of the present invention, a wire groove 112 is provided on the bottom surface of the upper disc 110, and the wire groove 112 continues the curvature of the single arc blade 130. The three-dimensional twisted blade 220 is clamped in the wire groove 112 to facilitate positioning of the three-dimensional twisted blade 220.

[0038] like Figure 3 and Figure 7 As shown, in one embodiment of the present invention, a boss 113 is protruded upward on the top surface of the upper disc 110, and a mounting groove 115 is provided in the boss 113. The mounting groove 115 is used to place the impeller ring. The impeller ring can facilitate the positioning of the impeller when the impeller is installed inside the water pump, and can effectively prevent the impeller from moving in the axial direction, ensuring that the impeller always remains in the correct position during the rotation process, avoiding problems such as pump body wear and liquid leakage caused by axial displacement of the impeller, and improving the sealing and operating stability of the water pump. The second matching hole 111 is located on the inner side of the boss 113, and the third matching hole 114 is located on the outer side of the boss 113.

[0039] like Figure 6 and Figure 7As shown, in one embodiment of the present invention, the bottom surface of the base 210 is protruding downward to provide an annular mounting wall 230, and the inner wall of the mounting wall 230 is provided with a plurality of teeth 231 in the vertical direction, and the teeth 231 are used to cooperate with the internal magnet in the pump body. The internal magnetic structure can drive the impeller body 100 and the impeller seat 200 to rotate as a whole after being assembled by cooperating with the teeth 231, thereby realizing the magnetic drive connection of the water pump. This magnetic drive mode has the advantages of no contact, no wear, good sealing, etc., which can effectively prevent liquid leakage, improve the safety and reliability of the water pump, and is also conducive to realizing remote control and automatic operation of the water pump.

[0040] like Figure 6 and Figure 7 As shown, in one embodiment of the present invention, a mounting wall 230 is penetrated by a plurality of circular holes 232 along its radial direction, and the circular holes 232 are used for inserting bolts to connect with the magnetic drive part of the water pump, thereby simplifying the connection structure and assembly process, reducing the assembly difficulty and cost, and also facilitating the disassembly and maintenance of the magnetic drive part when necessary, thereby improving the maintainability of the water pump.

[0041] The above content is a further detailed description of the present invention in combination with specific preferred implementation methods, and it cannot be determined that the specific implementation of the present invention is limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, without departing from the concept of the present invention, its architecture can be flexible and can derive a series of products. Just making a few simple deductions or substitutions should be regarded as belonging to the scope of patent protection of the present invention determined by the submitted claims.

Claims

1. A water pump, characterized in that: include: A pump body having a cavity therein; An impeller body is installed in the cavity of the pump body, the impeller body comprises an upper disc, a lower disc and a plurality of single arc blades, the plurality of single arc blades are arranged along a circumference and are located between the upper disc and the lower disc, and the lower disc is penetrated by a mounting hole; An impeller seat, the impeller seat includes a base and a plurality of three-dimensional twisted blades arranged in a circular array on the base, the base is docked with the mounting hole, the plurality of three-dimensional twisted blades correspond one to one with the plurality of single arc blades, the single arc blades and the three-dimensional twisted blades have different curvatures, the corresponding single arc blades and the three-dimensional twisted blades are jointly spliced ​​into impeller blades, and the plurality of impeller blades and the inner wall of the cavity together enclose a plurality of closed chambers for pumping.

2. The water pump according to claim 1, characterized in that: The upper circular piece is arranged in parallel with the lower circular piece, the single circular blade is arranged perpendicular to the upper circular piece and the lower circular piece, and the single circular blade and the three-dimensional twisted blade have a smooth transition at the position where they are spliced ​​with each other.

3. The water pump according to claim 1, characterized in that: The single arc blade and the three-dimensional twisted blade are both provided with 6 pieces.

4. The water pump according to claim 1, characterized in that: The single arc blade is provided with a first hot melt column protruding downward, the base is provided with a first matching hole at a position corresponding to the first hot melt column, the first hot melt column is plugged into the first matching hole, the three-dimensional twisted blade is provided with a second hot melt column protruding upward, the upper disc is provided with a second matching hole at a position corresponding to the second hot melt column, the second hot melt column is plugged into the second matching hole, and the impeller body and the impeller seat are connected to each other by hot riveting the first hot melt column and the second hot melt column.

5. The water pump according to claim 4, characterized in that: The single arc blade is provided with a groove at one end close to the three-dimensional twisted blade, and the groove extends in a vertical direction. The three-dimensional twisted blade is provided with a third hot melt column at one end close to the single arc blade, and the third hot melt column extends in a vertical direction and is placed in the groove. The upper disc is provided with a third matching hole at a position corresponding to the third hot melt column, and the third hot melt column is plugged into the third matching hole. The impeller body and the impeller seat are connected to each other by hot riveting through the third hot melt column.

6. The water pump according to claim 5, characterized in that: A boss is protruding upwards on the top surface of the upper disc, and a mounting groove is arranged in the boss. The mounting groove is used to place the impeller rotating ring.

7. The water pump according to claim 6, characterized in that The second matching hole is located on the inner side of the boss, and the third matching hole is located on the outer side of the boss.

8. The water pump according to claim 1, characterized in that The bottom surface of the upper disc is provided with a wire groove, the wire groove continues the curvature of the single arc blade, and the three-dimensional twisted blade is clamped in the wire groove.

9. The water pump according to claim 1, characterized in that: The bottom surface of the base is protruded downward to form an annular mounting wall, and the inner wall of the mounting wall is provided with a plurality of teeth along the vertical direction, and the teeth are used to cooperate with the internal magnet.

10. The water pump according to claim 9, characterized in that The installation wall is penetrated with a plurality of circular holes along its radial direction, and the circular holes are used for inserting bolts to connect with the magnetic driving part of the water pump.

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