CN114294259A - High-efficient low noise pump - Google Patents
High-efficient low noise pump Download PDFInfo
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- CN114294259A CN114294259A CN202111650973.6A CN202111650973A CN114294259A CN 114294259 A CN114294259 A CN 114294259A CN 202111650973 A CN202111650973 A CN 202111650973A CN 114294259 A CN114294259 A CN 114294259A
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- impeller
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- side wall
- pressure balance
- cambered surface
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 32
- 239000007788 liquid Substances 0.000 description 75
- 230000009471 action Effects 0.000 description 5
- 230000006872 improvement Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 238000007789 sealing Methods 0.000 description 5
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 3
- 229910052739 hydrogen Inorganic materials 0.000 description 3
- 239000001257 hydrogen Substances 0.000 description 3
- 229910052761 rare earth metal Inorganic materials 0.000 description 3
- 150000002910 rare earth metals Chemical class 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000033001 locomotion Effects 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
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Abstract
The invention relates to the technical field of pump equipment, in particular to a high-efficiency low-noise pump, wherein an impeller in the pump is provided with a drainage groove formed by a first inner side wall, a second inner side wall and an impeller edge which are oppositely arranged, the first inner side wall and the second inner side wall are sequentially arranged along the rotation track of the impeller, a first cambered surface which is concave inwards and a second cambered surface which is convex outwards are arranged on the second inner side wall from the joint of the second inner side wall and the impeller to the end far away from the impeller, and the first cambered surface is in tangent connection with the second cambered surface. By adopting the technical scheme, the conveying efficiency of the pump can be improved, and the noise generated when the pump works can be reduced.
Description
Technical Field
The invention relates to the technical field of pump equipment, in particular to a high-efficiency low-noise pump.
Background
The pump comprises a flow guide disc, an impeller, a motor and other main parts, wherein the flow guide disc is arranged in the impeller, and the motor is connected with the impeller to drive the impeller to rotate.
The patent application number is "CN 201920230896.0"'s chinese utility model patent discloses a pump of making an uproar falls in drainage, the axial both sides of impeller of the pump of should making an uproar fall respectively circumference equispaced apart be equipped with water drainage tank one and water drainage tank two, form push pedal one between the water drainage tank one (lateral wall between two adjacent water drainage tanks is the push pedal structure promptly), form push pedal two between the water drainage tank two, when the impeller rotates, promote liquid flow through push pedal one and push pedal two, promote the velocity of flow of liquid, and then improve the transport efficiency of the pump of making an uproar falls.
Two lateral walls of the drainage channel I and the drainage channel II of the impeller structure in the technical scheme are of a plane structure (namely two surfaces of the first push plate and the second push plate are of the plane structure), the drainage channel of the structure can generate large cavitation when pushing liquid to flow, conveying efficiency of the pump is affected, and meanwhile, the push plate of the plane structure can generate large noise when the pump works.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide an efficient low-noise pump, which improves the conveying efficiency of the pump and reduces the noise generated when the pump works.
In order to solve the technical problems, the invention adopts the technical scheme that:
the utility model provides a high-efficient low noise pump, impeller in the pump is equipped with the water drainage tank that forms jointly by relative first inside wall and the second inside wall that sets up and impeller border, first inside wall and second inside wall set gradually along the rotation orbit of impeller, the second inside wall is equipped with to keeping away from impeller one end from with the impeller junction and is the first cambered surface of indent and is the second cambered surface of evagination, first cambered surface is connected with the second cambered surface is tangent.
Further, the first cambered surface and the second cambered surface are both in a rounded corner structure.
Furthermore, the first cambered surface and the second cambered surface are provided with tangency points, and the vertical distance from the tangency points to the joint of the second inner side wall and the impeller is smaller than the vertical distance from the tangency points to the end, far away from the impeller, of the second inner side wall.
Further, the first inner side wall is of a plane structure.
Furthermore, one side of the bottom surface of the drainage groove, which is close to the first inner side wall, is a third inward concave arc surface, and the third arc surface is tangent to the first inner side wall.
Further, the two sides that the impeller is close to the middle part position all is equipped with a plurality of pressure balance grooves sunken towards the impeller, the fluting direction in pressure balance groove is out of plumb with the rotation orbit that pressure balance groove position corresponds, the one end in pressure balance groove is the structure that becomes dark gradually to the other end, the darker one end in pressure balance groove with the shallower one end in pressure balance groove is followed the direction of rotation of impeller sets gradually.
Further, the slotting direction of the pressure balance groove is tangent to the rotating track of the position of the pressure balance groove.
Furthermore, the two sides of the impeller are provided with buffer grooves facing the grooves of the impeller, the periphery of the top of each buffer groove is of a third fillet structure, and the periphery of the bottom of each buffer groove is of a fourth fillet structure.
Further, the distance between the third rounding structure and the fourth rounding structure ranges from 3.5mm to 4 mm.
Further, the chamfer diameter of the third rounding structure is 8mm, and the chamfer diameter of the fourth rounding structure is 3 mm.
The invention has the beneficial effects that:
by adopting the technical scheme provided by the invention, the first arc surface and the second arc surface are arranged on the second inner side wall, and the first inner side wall and the second inner side wall are sequentially arranged along the rotation direction of the impeller, so that the water discharge tank can prevent cavitation (power loss is caused by a cavitation pump) when liquid is pushed, and meanwhile, the pressure of the liquid entering the impeller can be increased by the first arc surface and the second arc surface, namely, the lift of the liquid is increased, so that the liquid conveying efficiency of the pump is improved, and the noise generated by friction between the liquid and the surface of the impeller can be reduced because the second inner side wall of the pump is the arc surface.
Drawings
FIG. 1 is a schematic structural view of an impeller according to the present invention;
FIG. 2 is an enlarged view taken at A in FIG. 1;
FIG. 3 is a cross-sectional view of a single drainage channel of the present invention;
FIG. 4 is a schematic view of another embodiment of the impeller of the present invention;
FIG. 5 is a schematic view of the pressure equalization tank of the present invention;
FIG. 6 is an exploded view of the pump of the present invention;
FIG. 7 is a state diagram of A, B and C on the rotational locus for the impeller of the present invention rotating in a clockwise direction;
FIG. 8 is a schematic view of the invention with liquid passing through the water inlet of the pump, the impeller and the water outlet of the pump in sequence;
FIG. 9 is a schematic view of the first inner sidewall drainage of the present invention;
description of reference numerals:
1. an impeller; 11. a water discharge tank; 12. a water outlet; 13. a water inlet; 111. a first inner side wall; 112. a second inner side wall; 113. a third cambered surface; 114. a corner; 1121. a first arc surface; 1122. a second arc surface; 1123. point A; 1124. b, point; 1125. c, point;
2. a buffer tank; 21. a third rounded corner structure; 22. a fourth fillet structure;
3. a pressure balance tank; 31. a pressure balance hole; 32. positioning holes;
4. a motor;
5. a support;
6. sealing the cup;
7. an inner magnetic rotor;
8. a pump body;
9. a front cover;
10. and a flow passage.
Detailed Description
In order to explain technical contents, achieved objects, and effects of the present invention in detail, the following description is made with reference to the accompanying drawings in combination with the embodiments.
Referring to fig. 1 to 9, in a high-efficiency and low-noise pump, an impeller 1 in the pump is provided with a drainage channel 11 formed by a first inner side wall 111 and a second inner side wall 112 which are oppositely arranged and the edge of the impeller 1, it can also be understood that the impeller 1 is provided in the pump, both sides of the impeller 1 close to the edge are provided with a plurality of drainage channels 11 arranged along the circumferential direction of the impeller 1, the plurality of drainage channels 11 are arranged along the rotating direction of the impeller 1, the drain tank 11 has a first inner side wall 111 and a second inner side wall 112 arranged oppositely, the first inner sidewall 111 and the second inner sidewall 112 are sequentially arranged along the rotation track of the impeller 1, a first arc surface 1121 which is concave inwards and a second arc surface 1122 which is convex outwards are sequentially arranged from the joint of the second inner side wall 112 and the impeller 1 to one end of the second inner side wall 112 which is far away from the impeller 1, the intersection of the first arc surface 1121 and the second arc surface 1122 is in a circumscribed positional relationship.
The use principle is as follows:
with reference to fig. 1, 2, 3, 6, 8 and 9, after the liquid enters the pump cavity from the water inlet 13 of the pump (the impeller 1 is located in the pump cavity), the liquid in the drainage groove 11 is thrown to the flow channel 10 in the pump cavity by the centrifugal force of the impeller 1 after the liquid enters the pump cavity, the liquid is pressurized once, the liquid in the flow channel 10 forms a low pressure because the liquid in the drainage groove 11 is thrown out, the liquid enters the drainage groove 11 again, the liquid is pressurized again, and the liquid reaches the water outlet 12 of the pump to obtain a higher pressure head after passing through the drainage groove 11, the flow channel 10 and the drainage groove 11 for a plurality of times of swirling motions, in the present invention, the first inner side wall 112 of the drainage groove 11 is provided with the first arc surface 1121 and the second arc surface 1122, and the first inner side wall 111 and the second inner side wall 112 are sequentially arranged along the rotation direction of the impeller 1, so that when the drainage groove 11 pushes the liquid, the liquid passes through (is guided) through the first arc surface 1121 and the second arc surface 1122, the liquid is more easily thrown from the second inner side wall 112 to the flow channel 10, that is, the liquid is not accumulated in the drainage groove 11 near the corner 114 of the drainage groove 11, so that the drainage groove 11 has no dead angle that the liquid cannot be thrown out, and the corner 114 of the drainage groove 11 cannot generate a cavitation phenomenon, thereby reducing the generation amount of cavitation (power loss due to a cavitation pump), and meanwhile, the first arc surface 1121 and the second arc surface 1122 can also increase the pressure of the liquid entering the impeller 1, that is, the lift of the liquid is increased; by adopting the invention, the efficiency of the pump can be improved, the second inner side wall 112 of the pump is a cambered surface, and when liquid flows through the second inner side wall 112, the friction between the liquid and the surface of the impeller 1 and the collision force generated between the liquid and the surface of the impeller 1 can be reduced, thereby reducing the noise generated by the pump during operation.
Further, each of the first arc surface 1121 and the second arc surface 1122 has a rounded structure.
From the above description, the cambered surface is the fillet structure, can make liquid more smoothly throw from water drainage tank 11 to runner 10, reduces the impact of liquid and water drainage tank 11 lateral wall, not only can further improve the efficiency of pump, also can reduce the noise that the pump produced in the work.
Further, the first arc surface 1121 and the second arc surface 1122 have a tangent point, and a vertical distance from the tangent point to a connection point of the second inner side wall 112 and the impeller 1 is smaller than a vertical distance from the tangent point to an end of the second inner side wall 112 away from the impeller 1.
From the above description, it can be seen that since the liquid is thrown from the second arc surfaces 1122 to the flow channel 10, the area of the second arc surfaces 1122 is larger than that of the first arc surfaces 1121, so that the efficiency of the pump can be further improved.
Further, the first inner sidewall 111 has a planar structure.
As can be seen from the above description, in the rotation process of the impeller 1, the first inner side wall 111 plays a role in pushing liquid, that is, the first inner side wall 111 is a water-facing surface, and the first inner side wall 111 is set to be a planar structure, so that the pushing area of the first inner side wall 111 on the liquid can be increased.
Further, one side of the bottom surface of the drainage channel 11, which is close to the first inner side wall 111, is a third inward concave arc surface 113, and the third arc surface 113 is tangent to the first inner side wall 111.
As is apparent from the above description, the accumulation of liquid in the corner 114 of the drain groove 11 near the first inner side wall 111 can be further prevented, that is, the generation amount of cavitation can be further reduced.
Further, impeller 1 all is equipped with a plurality of pressure balance groove 3 towards impeller 1 sunken on the two sides that are close to the middle part position, the rotation orbit that pressure balance groove 3's fluting direction and pressure balance groove 3 place position correspond is out of plumb, pressure balance groove 3's one end is the structure that becomes dark gradually to pressure balance groove 3's the other end, the darker one end of pressure balance groove 3 with the shallower one end of pressure balance groove 3 is followed impeller 1's direction of rotation sets gradually.
As can be seen from the above description, the impeller 1 in the prior art has the pressure balance hole 31, the pressure balance hole 31 is a through hole structure on the surface of the impeller, the slotting direction of the pressure balance groove 3 is not perpendicular to the rotation track corresponding to the position of the pressure balance groove 3, the deeper end of the pressure balance groove 3 and the shallower end of the pressure balance groove 3 are sequentially arranged along the rotation direction of the impeller 1, when the impeller 1 rotates, liquid can better enter the pressure balance groove 3 from the shallower end of the pressure balance groove, the pressure balance groove 3 cooperates with the pressure balance hole 31 to keep the pressure balance on the two sides of the impeller 1, so as to reduce friction between the liquid and the surface of the impeller 1 and reduce noise generated during the operation of the pump, and reduce collision and friction between the impeller 1 and the inside of the pump during the operation, thereby better protecting the impeller 1.
Further, the slotting direction of the pressure balance groove 3 is tangent to the rotating track of the position of the pressure balance groove 3.
From the above description, it can be known that the liquid is in a vortex state under the action of rotation of the impeller 1, and the slotting direction of the pressure balance groove 3 is tangent to the rotation track of the position of the pressure balance groove 3, so that the liquid can enter the pressure balance groove 3 from the shallower end of the pressure balance groove 3 more easily, and meanwhile, the deeper end of the pressure balance groove 3 has a limiting effect on the liquid in the pressure balance groove 3, so that the liquid is prevented from falling out of the pressure balance groove 3 under the action of inertia of the impeller 1.
Further, the two sides of the impeller 1 are provided with buffer grooves 2 facing the impeller grooves, the periphery of the top of each buffer groove is provided with a third fillet structure 21, and the periphery of the bottom of each buffer groove is provided with a fourth fillet structure 22.
From the above description, when the impeller 1 rotates, a high pressure area is formed on one side of the impeller 1 close to the water outlet 12, a low pressure area is formed on one side of the impeller 1 close to the water inlet 13, liquid in the high pressure area enters the buffer groove 2 and flows from the buffer groove 2 to the low pressure area, the buffer groove 2 shares the flow rate of water flowing through the gap between the impeller 1 and the pump cavity, so that friction and noise between the liquid and the inner wall of the pump cavity and the impeller 1 are reduced, the noise generated by collision and friction when the impeller 1 works is reduced, and the purpose of protecting the impeller 1 is achieved, and the third rounded corner structure 21 is arranged on the periphery of the top of the buffer groove 2 and the fourth rounded corner structure 22 is arranged on the periphery of the bottom of the buffer groove 2, so that the liquid can enter the buffer groove 2 more easily, that the flow rate of the liquid passing through the gap between the impeller 1 and the pump cavity is better shared.
Further, the distance between the third rounded corner structure 21 and the fourth rounded corner structure 22 ranges from 3.5mm to 4 mm.
As can be seen from the above description, the rounded corner structure within the distance range can make the buffer tank 2 play a better role in sharing the flow rate of the liquid passing through the gap between the impeller 1 and the pump chamber.
Further, the chamfer diameter of the third rounding structure 21 is 8mm, and the chamfer diameter of the fourth rounding structure 22 is 3 mm.
From the above description, it can be seen that the radius of the diameter is such that, during the liquid entering the buffer reservoir 2, the radius has a better flow directing effect, i.e. the liquid in the pump flows more easily from the buffer reservoir 2 to the low pressure region.
Application scenarios
The pump is needed to be used in the field of rare earth hydrogen energy, the rare earth hydrogen energy is liquid at ultralow temperature, and the pump works in the ultralow temperature environment when conveying the rare earth hydrogen energy, so that the pump has higher conveying efficiency besides better low-temperature resistance.
Embodiment one of the invention
Referring to fig. 6 and 8, a high-efficiency low-noise pump comprises a motor 4, a bracket 5, a sealing cup 6, an inner magnetic rotor 7, a pump body 8, an impeller 1 and a front cover 9, wherein the sealing cup 6 is arranged in the bracket 5, the inner magnetic rotor 7 is arranged in the sealing cup 6, the impeller 1 is arranged in a pump cavity of the pump body 8 and covers the impeller 1 in the pump body 8 by the front cover 9, a flow passage 10 is formed by gaps among the impeller 1, the pump cavity and the front cover 9, a rotating shaft of the motor 4 penetrates through the bracket 5 and the sealing cup 6 to be connected with one end of the inner magnetic rotor 7, the other end of the inner magnetic rotor 7 is connected with the impeller 1, the motor 4 drives the impeller 1 to rotate through the inner magnetic rotor 7, liquid enters the pump cavity 8 from a water inlet 13 of the pump, the liquid is discharged to a water outlet 12 of the pump under the action of the impeller 1 in the pump cavity, a larger pressure head is obtained at the water outlet 12 of the pump, and finally discharged from the water outlet 12 of the pump, other specific structures and other parts inside the pump are all the prior art, and are not described herein;
referring to fig. 1 to 4, the impeller 1 in the pump is provided with a drainage channel 11 formed by a first inner side wall 111 and a second inner side wall 112 which are oppositely arranged and an edge of the impeller 1, that is, two sides of the impeller 1 close to the edge are provided with a plurality of drainage channels 11 arranged along the circumferential direction of the impeller 1, the drainage channels 11 are arranged along the rotation direction of the impeller 1, the drainage channels 11 are provided with a first inner side wall 111 and a second inner side wall 112 which are oppositely arranged, the first inner side wall 111 and the second inner side wall 112 are arranged along the rotation track of the impeller 1 in sequence, and further explanation is provided for "the first inner side wall 111 and the second inner side wall 112 are arranged along the rotation track of the impeller 1 in sequence: referring to fig. 1, 2 and 7, if the impeller 1 rotates clockwise, the static positions of the first inner side wall 111 and the second inner side wall 112 on the rotation track of the impeller 1 are respectively marked as point a 1123 and point B1124, the rotation track of the impeller 1 also has a static position C1125, when the impeller 1 rotates, the position of the point B1124 always passes the position of the point C1125 before the position of the point a 1123, that is, the position of the second inner side wall 112 on the rotation track of the impeller 1 is located in front of the position of the first inner side wall 111 on the rotation track of the impeller 1, the first inner side wall 111 is a water facing surface, the liquid is thrown out of the drainage channel 11 to the flow channel 10 through the second inner side wall 112, referring to fig. 1 to 4, the first inner side wall 111 is a plane structure, a first arc surface 1121 and a second arc surface 1122 which are concave and convex outward are sequentially arranged at the connection position of the second inner side wall 112 and the impeller 1 to the end of the second inner side wall 112 away from the impeller 1, "one end of the second inner side wall 112 far from the impeller 1" is seen from the horizontal placement angle direction of the impeller 1 in fig. 1 and 3, which means that the second inner side wall in fig. 1 and 3 is located at the uppermost end of the surface of the impeller 1, the positions of the first arc surface 1121 and the second arc surface 1122 on the water discharge tank 11 do not change with the change of the placement angle of the impeller 1, both the first arc surface 1121 and the second arc surface 1122 are rounded structures, the diameters of the first arc surface 1121 and the second arc surface 1122 are 1.25mm and 2.8mm, the intersection of the first arc surface 1121 and the second arc surface 1122 is in an external tangent position relationship, the first arc surface 1121 and the second arc surface 1122 have a tangent point, the vertical distance from the tangent point to the connection of the second inner side wall 112 and the impeller 1 is smaller than the vertical distance from the tangent point to the end of the second inner side wall 112 far from the impeller 1, and one side of the bottom surface of the water discharge tank 11 close to the first inner side wall 111 is a concave third arc surface 113, the third arc surface 113 is tangent to the first inner side wall 111, and the third arc surface 113 is also in a fillet structure;
referring to fig. 1 to 5, the impeller of the prior art has a pressure balance hole 31, the pressure balance hole 31 is mostly a through hole structure, two sides of the impeller 1 near the middle position are both provided with a plurality of pressure balance grooves 3 recessed toward the thickness direction of the impeller 1, the slotting direction of the pressure balance grooves 3 is not perpendicular to the rotation track corresponding to the position of the pressure balance grooves 3, preferably, the slotting direction of the pressure balance grooves 3 is tangent to the rotation track of the position of the pressure balance grooves 3, one end of the pressure balance grooves 3 to the other end of the pressure balance grooves 3 are gradually deeper, the deeper end of the pressure balance grooves 3 and the shallower end of the pressure balance grooves 3 are sequentially arranged along the rotation direction of the impeller 1, and "the first inner side wall 111 and the second inner side wall 112 are sequentially arranged along the rotation direction of the impeller 1 The directions are sequentially arranged, and the relation is consistent, which is not described in detail, the surface of the impeller is also provided with a plurality of positioning holes 32, and the positioning holes 32 are used for producing the impeller to prevent the impeller from deforming in the manufacturing process;
referring to fig. 1 to 4, both sides of the impeller 1 are provided with buffer grooves 2 recessed toward the impeller 1, preferably, the buffer grooves 2 are circular structures, the circumference of the top of the buffer groove 2 is a third fillet structure 21, the circumference of the bottom of the buffer groove 2 is a fourth fillet structure 22, the distance from the third fillet structure 21 to the fourth fillet structure 22 is 3.5mm to 4mm, the chamfer diameter of the third fillet structure 21 is 8mm, and the chamfer diameter of the fourth fillet structure 22 is 3 mm.
The working principle is as follows:
with reference to fig. 1 to 8, after liquid enters the pump cavity of the pump body 8 from the water inlet 13 of the pump (the impeller 1 is located in the pump cavity), the liquid in the drainage groove 11 is thrown from the second inner side wall to the flow channel 10 under the action of the centrifugal force of the impeller 1 after the liquid enters the pump cavity, the first inner side wall 111 plays a role of pushing water flow, and once pressurization is performed, the liquid in the flow channel 10 forms low pressure due to the liquid in the drainage groove 11 being thrown out, the liquid enters the drainage groove 11 again, and the liquid is pressurized again, and the liquid passes through the drainage groove 11, the flow channel 10 and the drainage groove 11 for many times of swirling motion, so that the liquid reaches the water outlet 12 of the pump to obtain higher pressure head, because the second inner side wall 112 is provided with the first arc 1121 and the second arc 1122, the liquid can be easily thrown out from the second inner side wall 112 by overflowing under the action of the first arc 1121 and the second arc 1122, that the liquid cannot be accumulated at the corner 114 of the drainage groove 11 close to the drainage groove 11, so that the drainage channel 11 has no dead angle that can not throw out the liquid, so that the corner 114 of the drainage channel 11 can not generate cavitation, and further can reduce the generation amount of cavitation, the first inner side wall 111 is facing the water, the first inner side wall 111 pushes the liquid to flow, and promotes the flow rate of the liquid, meanwhile, the first arc 1121 and the second arc 1122 can also increase the pressure of the liquid entering the impeller 1, the second inner side wall 112 of the pump is an arc, when the liquid flows through the second side wall 112, the friction between the liquid and the surface of the impeller 1 and the collision force generated between the liquid and the surface of the impeller 1 can also be reduced, thereby reducing the noise generated when the pump works, the liquid can flow from the buffer channel 2 to the low pressure area at the water inlet during the flow process of the pump cavity, the flow of the buffer channel 2 through the gap between the impeller 1 and the pump cavity, and further reducing the friction and noise generated between the liquid and the inner wall of the pump cavity and the impeller 1, namely, the noise generated by collision and friction when the impeller 1 works is reduced and the purpose of protecting the impeller 1 is realized, and the third rounded structure 21 is arranged on the periphery of the top of the buffer groove 2 and the fourth rounded structure 22 is arranged on the periphery of the bottom of the buffer groove 2, so that liquid can easily enter the buffer groove 2, namely, the flow of the liquid passing through the gap between the impeller 1 and the pump cavity is better shared; when the impeller 1 rotates, liquid enters the pressure balance groove 3 from the shallower end of the pressure balance groove 3 to be stored, the pressure balance groove 3 is matched with the pressure balance hole 31 to enable the two sides of the impeller 1 to keep pressure balance, the impeller 1 can stably work at the center of the body (the impeller 1 cannot shake), and therefore friction between the liquid and the surface of the impeller 1 can be reduced, and noise generated in the working process of the pump can be reduced.
Has the advantages that:
compared with the pump before improvement: the lift of the pump before the improvement is 38 m-43 m, the lift of the pump after the improvement is 40 m-60 m, the noise generated by the pump before the improvement in the working process is 85 decibel-90 decibel, and the noise generated by the pump after the improvement in the working process is 65 decibel-80 decibel.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent changes made by using the contents of the present specification and the drawings, or applied directly or indirectly to the related technical fields, are included in the scope of the present invention.
Claims (10)
1. The utility model provides a high-efficient low noise pump, impeller in the pump is equipped with the common water drainage tank that forms by relative first inside wall and second inside wall and the impeller border that sets up, its characterized in that: first inside wall and second inside wall set gradually along the rotation orbit of impeller, the second inside wall is equipped with the first cambered surface that is to the indent and is the second cambered surface of evagination from locating to keeping away from impeller one end with the impeller junction, first cambered surface is tangent with the second cambered surface and is connected.
2. A high efficiency, low noise pump as defined in claim 1, wherein: the first cambered surface and the second cambered surface are both fillet structures.
3. A high efficiency, low noise pump as defined in claim 1, wherein: the first cambered surface and the second cambered surface are provided with tangency points, and the vertical distance from the tangency points to the joint of the second inner side wall and the impeller is smaller than the vertical distance from the tangency points to the end, far away from the impeller, of the second inner side wall.
4. A high efficiency, low noise pump as defined in claim 1, wherein: the first inner side wall is of a plane structure.
5. A high efficiency, low noise pump as defined in claim 1, wherein: one side of the bottom surface of the drainage groove, which is close to the first inner side wall, is a third cambered surface which is inwards concave, and the third cambered surface is tangent to the first inner side wall.
6. A high efficiency, low noise pump as defined in claim 1, wherein: the impeller is close to the two sides of middle part position and all is equipped with a plurality of pressure balance grooves towards the impeller sunkenly, the rotation orbit out of plumb that the fluting direction of pressure balance groove and pressure balance groove position correspond, the one end of pressure balance groove is the structure that becomes dark gradually to the other end, the darker one end of pressure balance groove with the shallower one end of pressure balance groove is followed the direction of rotation of impeller sets gradually.
7. A high efficiency, low noise pump according to claim 6, wherein: the grooving direction of the pressure balance groove is tangent to the rotation track of the position of the pressure balance groove.
8. A high efficiency, low noise pump as defined in claim 1, wherein: the two sides of the impeller are provided with buffer grooves facing the impeller grooves, the periphery of the top of each buffer groove is of a third fillet structure, and the periphery of the bottom of each buffer groove is of a fourth fillet structure.
9. A high efficiency, low noise pump as defined in claim 8, wherein: the distance between the third fillet structure and the fourth fillet structure ranges from 3.5mm to 4 mm.
10. A high efficiency, low noise pump as defined in claim 8, wherein: the chamfer diameter of third fillet structure is 8mm, the chamfer diameter of fourth fillet structure is 3 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111650973.6A CN114294259A (en) | 2021-12-30 | 2021-12-30 | High-efficient low noise pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111650973.6A CN114294259A (en) | 2021-12-30 | 2021-12-30 | High-efficient low noise pump |
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| Publication Number | Publication Date |
|---|---|
| CN114294259A true CN114294259A (en) | 2022-04-08 |
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| CN202111650973.6A Pending CN114294259A (en) | 2021-12-30 | 2021-12-30 | High-efficient low noise pump |
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