CN111120344A

CN111120344A - Water immersion type submersible electric pump floating impeller

Info

Publication number: CN111120344A
Application number: CN201911385547.7A
Authority: CN
Inventors: 不公告发明人
Original assignee: Kunming Yanding Technology Development Co ltd
Current assignee: Kunming Yanding Technology Development Co ltd
Priority date: 2019-12-29
Filing date: 2019-12-29
Publication date: 2020-05-08

Abstract

The invention relates to the technical field of submersible electric pump impellers, in particular to a floating type impeller of a water immersion type submersible electric pump. Comprises a guide vane; the guide vanes are glued between the front wall and the rear wall; the number of the guide vanes is five; the guide vanes are uniformly arranged at equal intervals along the circumferential direction of the front wall or the rear wall; wherein the guide vane is covered by the front wall on the front side; the front wall is provided with a cylindrical shaft sleeve and is penetrated by the cylindrical shaft sleeve; a through groove is formed in the cylindrical shaft sleeve; a circular through groove A is formed in the center of the end face of the rear wall; and the end face of the rear wall is welded with the hub; the hub is provided with a circular notch; the center of the hub is penetrated by the cylindrical shaft sleeve; compared with the traditional method, the invention has stable structure and good operation performance, the floating impeller can seal the impeller and the end surface of the pump shell by the pressure of the water hammer of the floating impeller, the impeller can slide on the pump shaft, once solid particles appear in water, the impeller can automatically rise to release the solid particles, the pump head cannot be locked to damage a motor, and the invention is worthy of popularization and application.

Description

Water immersion type submersible electric pump floating impeller

Technical Field

The invention relates to the technical field of submersible electric pump impellers, in particular to a floating type impeller of a water immersion type submersible electric pump.

Background

Water pumps are machines that deliver or pressurize a liquid. It transfers the mechanical energy of prime mover or other external energy to liquid to increase the energy of liquid, mainly used to transport liquid including water, oil, acid-base liquid, emulsion, suspension and liquid metal, etc., and also can transport liquid, gas mixture and liquid containing suspended solid matter. The method is widely applied to various fields at present. The impeller of a coolant pump for an internal combustion engine is preferably made of plastic in order to realize a component that can be produced cost-effectively and is optimal in weight. The impeller of such a coolant pump is preferably designed to feed coolant in the axial direction and to discharge coolant out of the impeller in a reversed, radial direction. For this purpose, the impeller is provided with a plurality of guide vanes which are curved in the radial direction or in the axial-radial direction and which are integrally connected to the rear wall of the impeller. In the technical field of water pump impellers, an impeller is fixed on a pump shaft and cannot slide, the flow and the lift of the impeller are ensured by sealing the pump shell and the radial surface of the impeller, but the fixing method has great limitation, and once the content of solid particles in water exceeds a standard, the impeller is very easy to be blocked and further a motor is damaged. The floating impeller seals the end face of the impeller and the pump shell by the pressure of the water hammer of the floating impeller, and can slide on the pump shaft according to specific conditions. The floating type impeller provided by the invention is as the name implies that the impeller can slide on the pump shaft, and once solid particles appear in water, the impeller can automatically rise to release the solid particles, so that the pump head cannot be locked and the motor cannot be damaged. In the past, cast iron pump casings are often used in cooperation with pump casings, so that the service life is short, and the stability is poor.

Disclosure of Invention

The technical problem to be solved by the invention is to provide a floating impeller of a submerged submersible electric pump aiming at the technical defects, the design of a through groove on a cylindrical shaft sleeve is adopted, namely the through groove is designed in a standard regular hexagon shape, the fixed connection in a rotation-resistant manner can be realized after a pump shaft is connected with the impeller, the output of the water pump is enhanced, and the working efficiency is improved; the design that the front wall and the rear wall have equal diameters can prevent large particles from blocking the impeller to damage the motor and influence the normal work of the motor when the impeller works; the design of the circular notch on the hub is adopted, so that the hub and the hub sleeve can be tightly matched, and when large solid particles appear, the impeller automatically rises to release the solid particles, so that the particles are not blocked to block the pump head and influence the normal work of the motor; the impeller can be sealed with the end surface of the pump shell by the aid of the hydraulic hammer pressure of the impeller, so that additional parts are not required to be added for tight sealing, and the situation that the pump shell and the impeller are blocked after large solid particles appear can be avoided; the impeller is designed by thermoplastic plastic syndiotactic polystyrene (PS-S-GF 30), so that the cost is low, the impeller can be ideally used for a coolant pump, the integral stability of the impeller during working can be improved, a certain corrosion resistance function is realized, and the service life of the impeller is prolonged; in order to realize the material locking connection of all parts of the impeller with a multi-part structure, the adhesive design can improve the manufacturing precision with small tolerance and improve the rotation of the pump shaft, and in addition, the impeller with large size or the impeller with high rotation speed still has enough rotation precision without additional balance; compared with a cast iron pump, the cast iron pump has higher corrosion resistance, higher stability and longer service life by adopting the design that the pump shell is made of stainless steel, and the sliding connection of the impeller on the pump shaft can be further optimized by matching with the floating impeller; the design of pump shaft matching with novel guide wheel, pump shell and floating impeller can improve the integral rotation stability and the output lift and efficiency of the water pump.

In order to solve the technical problems, the technical scheme adopted by the invention is as follows: comprises a guide vane; the guide vanes are glued between the front wall and the rear wall; the number of the guide vanes is five; the guide vanes are uniformly arranged at equal intervals along the circumferential direction of the front wall or the rear wall; wherein the guide vane is covered by the front wall on the front side; the front wall is provided with a cylindrical shaft sleeve and is penetrated by the cylindrical shaft sleeve; a through groove is formed in the cylindrical shaft sleeve; a circular through groove A is formed in the center of the end face of the rear wall; and the end face of the rear wall is welded with the hub; the hub is provided with a circular notch; the center of the hub is penetrated by the cylindrical shaft sleeve; a circular notch in the hub is connected with one end of the pump shell in a matching way; the other end of the pump shell is connected with the guide wheel in a matching way.

Further optimize this technical scheme, the antetheca be equal with the back wall external diameter value.

Further optimizing the technical scheme, the cross section of the through groove is in a standard regular hexagon shape.

The technical scheme is further optimized, and the guide vane uses thermoplastic syndiotactic polystyrene PS-S-GF 30 as a material.

Further optimizing the technical scheme, the single parts of the guide blade are connected in a material locking way by using cyanoacrylate, epoxy resin or synthetic rubber as an adhesive.

Further optimizing the technical scheme, the cylindrical shaft sleeve is fixed on the front wall, the rear wall and the central shaft of the hub through bonding positions; and the cylindrical shaft sleeve is fixed on the pump shaft in a rotation-resistant manner in the installation state of the guide vanes.

Further optimizing the technical scheme, the pump shell comprises a shell, a cover plate, a hub sleeve, a B circular through groove and a molding disc; the molding disc is welded at one end of the shell; the inner wall of the shell and the cover plate are welded with each other; a circular through groove B is formed in the center of the cover plate; the end face of the outer side of the cover plate is welded with a hub sleeve; wherein the hub sleeve is concentrically fixed with the circular through groove B; the hub sleeve is mutually matched and connected with the hub.

Further optimizing the technical scheme, the pump shell parts are made of stainless steel materials; the wall thickness of the hub sleeve is equal to the thickness of the circular notch in the hub; and the inner diameter of the circular through groove B is equal to the outer diameter of the circular through groove A.

Further optimizing the technical scheme, the guide wheel comprises a guide wheel wall, blades, a shaft hole, a sleeve ring groove and a water diversion port; a sleeve ring groove is arranged on the side surface of the guide wheel wall; one end of the guide wheel wall is uniformly provided with eight blades at equal intervals along the circumferential direction of the guide wheel; the center of the wall of the guide wheel is provided with a shaft hole; wherein, a water diversion port is arranged on the lantern ring groove between every two adjacent blades.

Further optimizing the technical scheme, the inner diameter of the shaft hole is equal to the outer diameter of the cylindrical shaft sleeve; and the inner diameter of the shaft hole is smaller than the outer diameter of the circular through groove A and the inner diameter of the circular through groove B.

Compared with the prior art, the invention has the following advantages: 1. the design of the through grooves on the cylindrical shaft sleeve is adopted, namely the through grooves are designed in a standard regular hexagon, so that the fixed connection in a rotation-resisting manner can be realized after the pump shaft is connected with the impeller, the output of the water pump is enhanced, and the working efficiency is improved; 2. the design that the front wall and the rear wall have equal diameters can prevent large particles from blocking the impeller to damage the motor and influence the normal work of the motor when the impeller works; 3. the design of the circular notch on the hub is adopted, so that the hub and the hub sleeve can be tightly matched, and when large solid particles appear, the impeller automatically rises to release the solid particles, so that the particles are not blocked to block the pump head and influence the normal work of the motor; 4. the impeller can be sealed with the end surface of the pump shell by the aid of the hydraulic hammer pressure of the impeller, so that additional parts are not required to be added for tight sealing, and the situation that the pump shell and the impeller are blocked after large solid particles appear can be avoided; 5. the impeller is designed by thermoplastic plastic syndiotactic polystyrene (PS-S-GF 30), so that the cost is low, the impeller can be ideally used for a coolant pump, the integral stability of the impeller during working can be improved, a certain corrosion resistance function is realized, and the service life of the impeller is prolonged; 6. in order to realize the material locking connection of all parts of the impeller with a multi-part structure, the adhesive design can improve the manufacturing precision with small tolerance and improve the rotation of the pump shaft, and in addition, the impeller with large size or the impeller with high rotation speed still has enough rotation precision without additional balance; 7. compared with a cast iron pump, the cast iron pump has higher corrosion resistance, higher stability and longer service life by adopting the design that the pump shell is made of stainless steel, and the sliding connection of the impeller on the pump shaft can be further optimized by matching with the floating impeller; 8. the design of pump shaft matching with novel guide wheel, pump shell and floating impeller can improve the integral rotation stability and the output lift and efficiency of the water pump.

Drawings

Fig. 1 is a side view of the rear wall of a floating impeller of a submersible electric pump.

Fig. 2 is a side view of a floating impeller shaft of a submerged submersible electric pump.

Fig. 3 is a side view of a floating impeller-attached pump housing of a submersible electric pump.

Fig. 4 is a front side view of a floating impeller connecting guide wheel of a submerged submersible electric pump.

Fig. 5 is a rear side view of a floating impeller connecting guide wheel of a submerged submersible electric pump.

Fig. 6 is a front view of the assembly of the floating impeller guide wheel and the pump casing of the submerged submersible electric pump.

Fig. 7 is a rear view of the assembly of the floating impeller guide wheel and the pump housing of the submersible electric pump.

Fig. 8 is a front side view of the floating impeller and pump housing assembly of a submersible electric pump.

Fig. 9 is a rear side view of the floating impeller and pump housing assembly of a submersible electric pump.

Fig. 10 is a front view of the floating impeller, pump housing and guide wheel assembly of the submersible electric pump.

Fig. 11 is a rear view of the floating impeller, pump housing and guide wheel of the submerged submersible electric pump assembled.

In the figure, 1, guide vanes; 2. a front wall; 3. a rear wall; 4. a cylindrical shaft sleeve; 5. a through groove; 6. a, a circular through groove; 7. a hub; 8. a circular notch; 9. a pump housing; 10. a guide wheel; 11. a housing; 12. a cover plate; 13. a hub sleeve; 14. b, a circular through groove; 15. molding a disc; 16. a guide wheel wall; 17. a blade; 18. a shaft hole; 19. a ring groove; 20. a water diversion port.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings in conjunction with the following detailed description. It should be understood that the description is intended to be exemplary only, and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.

The first embodiment is as follows: shown in connection with fig. 1-11, comprising a guide vane 1; the guide vane 1 is glued between the front wall 2 and the rear wall 3; the number of the guide vanes 1 is five; and the guide vanes 1 are uniformly arranged at equal intervals along the circumferential direction of the front wall 2 or the rear wall 3; wherein the guide vane 1 is covered on the front side by a front wall 2; the front wall 2 is provided with a cylindrical shaft sleeve 4 and is penetrated by the cylindrical shaft sleeve 4; a through groove 5 is arranged on the cylindrical shaft sleeve 4; the center of the end surface of the rear wall 3 is provided with an A round through groove 6; and the end face of the rear wall 3 is welded with the hub 7; a circular notch 8 is arranged on the hub 7; the center of the hub 7 is penetrated by the cylindrical shaft sleeve 4; a circular notch 8 in the hub 7 is matched and connected with one end of a pump shell 9; the other end of the pump shell 9 is connected with a guide wheel 10 in a matching way; the outer diameter values of the front wall 2 and the rear wall 3 are equal; the cross section of the through groove 5 is a standard regular hexagon; the guide vane 1 uses thermoplastic syndiotactic polystyrene PS-S-GF 30 as a material; the single parts of the guide vane 1 are connected in a material locking way by using cyanoacrylate, epoxy resin or synthetic rubber as an adhesive; the cylindrical shaft sleeve 4 is fixed on the central shafts of the front wall 2, the rear wall 3 and the hub 7 through bonding positions; the cylindrical shaft sleeve 4 is fixed on the pump shaft in a rotation-resistant manner in the installation state of the guide vane 1; the pump shell 9 comprises a shell body 11, a cover plate 12, a hub sleeve 13, a B circular through groove 14 and a molding disc 15; the molded disc 15 is welded at one end of the shell 11; and the inner wall of the shell 11 and the cover plate 12 are welded with each other; a B round through groove 14 is arranged in the center of the cover plate 12; a hub sleeve 13 is welded on the end face of the outer side of the cover plate 12; wherein the hub sleeve 13 and the B round through groove 14 are fixed concentrically; the hub sleeve 13 is mutually matched and connected with the hub 7; parts of the pump shell 9 are made of stainless steel materials; the hub sleeve 13 has a wall thickness equal to the thickness of the circular notch 8 in the hub 7; the inner diameter of the circular through groove 14B is equal to the outer diameter of the circular through groove 6A; the guide wheel 10 comprises a guide wheel wall 16, blades 17, a shaft hole 18, a lantern ring groove 19 and a water diversion port 20; a sleeve ring groove 19 is arranged on the side surface of the guide wheel wall 16; one end of the guide wheel wall 16 is uniformly provided with eight blades 17 at equal intervals along the circumferential direction of the guide wheel 10; the center of the guide wheel wall 16 is provided with a shaft hole 18; wherein, a water inlet 20 is arranged on the lantern ring groove 19 between every two adjacent blades 17; the inner diameter of the shaft hole 18 is equal to the outer diameter of the cylindrical shaft sleeve 4; and the inner diameter of the shaft hole 18 is smaller than the outer diameter of the circular through groove 6A and the inner diameter of the circular through groove 14B.

According to the invention, through the design of the floating impeller, the hub 7 in the impeller is matched and connected with the hub sleeve 13 in the pump shell 9 during working, then the other end of the pump shell 9 is combined and connected with the guide wheel 10, and then the pump shaft is connected to the motor so as to drive the integral submersible pump to work, the end faces of the impeller and the pump shell 9 are completely sealed by the water hammer pressure in the pump shell 9 during working, if large particles occur in the pump shell 9 and the impeller, the impeller can horizontally move along the pump shaft to release solid particles due to the accumulated water pressure because the large particles are accumulated to a certain degree, the solid particles can be sealed with the pump shell 9 again due to the balance of the water pressure after being released, the floating impeller is safe and reliable, the efficiency is high, and the integral lift of the water pump during working can be improved.

According to the invention, through groove 5 design on the cylindrical shaft sleeve 4 is adopted, namely the through groove 5 is designed in a standard regular hexagon shape, so that anti-rotation fixed connection can be realized after the pump shaft is connected with the impeller, the output of the water pump is enhanced, and the working efficiency is improved; the design that the front wall 2 and the rear wall 3 have the same diameter can prevent large particles from blocking the impeller to damage the motor and influence the normal operation of the motor when the impeller works; the design of the circular notch 8 on the hub 7 is adopted, so that the hub 7 and the hub sleeve 13 can be tightly matched, and when large solid particles appear, the impeller automatically rises to release the solid particles, so that the particles cannot block the pump head to influence the normal work of the motor; the impeller can be sealed with the end surface of the pump shell 9 by the aid of the hydraulic hammer pressure of the impeller, so that additional parts are not required to be added for tight sealing, and the situation that the pump shell 9 and the impeller are blocked after large solid particles appear can be avoided; the impeller is designed by thermoplastic plastic syndiotactic polystyrene (PS-S-GF 30), so that the cost is low, the impeller can be ideally used for a coolant pump, the integral stability of the impeller during working can be improved, a certain corrosion resistance function is realized, and the service life of the impeller is prolonged; in order to realize the material locking connection of all parts of the impeller with a multi-part structure, the adhesive design can improve the manufacturing precision with small tolerance and improve the rotation of the pump shaft, and in addition, the impeller with large size or the impeller with high rotation speed still has enough rotation precision without additional balance; compared with a cast iron pump, the cast iron pump has higher corrosion resistance, higher stability and longer service life by adopting the design that the pump shell 9 is made of stainless steel, and the sliding connection of the impeller on the pump shaft can be further optimized by matching with the floating impeller; the design of pump shaft matching with novel guide wheel 10, pump shell 9 and floating impeller can improve the integral rotation stability and the output lift and efficiency of the water pump; compared with the traditional method, the invention has stable structure and good operation performance, the floating impeller can seal the impeller and the end surface of the pump shell 9 by the self water hammer pressure, and the impeller can slide on the pump shaft, once solid particles appear in water, the impeller can automatically lift to release the solid particles, the pump head cannot be locked to damage the motor, and the invention is worth popularizing and applying.

It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.

Claims

1. The utility model provides a floating impeller of submerged submersible pump which characterized in that: comprises a guide vane (1); the guide vane (1) is glued between the front wall (2) and the rear wall (3); the number of the guide vanes (1) is five; the guide vanes (1) are uniformly arranged along the circumferential direction of the front wall (2) or the rear wall (3) at equal intervals; wherein the guide vane (1) is covered on the front side by a front wall (2); the front wall (2) is provided with a cylindrical shaft sleeve (4) and is penetrated by the cylindrical shaft sleeve (4); a through groove (5) is arranged on the cylindrical shaft sleeve (4); the center of the end surface of the rear wall (3) is provided with an A round through groove (6); the end face of the rear wall (3) is welded with the hub (7); a circular notch (8) is arranged on the hub (7); the center of the hub (7) is penetrated by the cylindrical shaft sleeve (4); a circular notch (8) in the hub (7) is connected with one end of a pump shell (9) in a matching way; the other end of the pump shell (9) is connected with the guide wheel (10) in a matching way.

2. The submersible electric pump floating impeller of claim 1, wherein: the outer diameter values of the front wall (2) and the rear wall (3) are equal.

3. The submersible electric pump floating impeller of claim 1, wherein: the cross section of the through groove (5) is in a standard regular hexagon shape.

4. The submersible electric pump floating impeller of claim 1, wherein: the guide vanes (1) are made of syndiotactic polystyrene PS-S-GF 30, a thermoplastic.

5. A submersible electric pump floating impeller according to claim 1 or 4, characterized in that: the individual parts of the guide vane (1) are connected in a material locking manner by using cyanoacrylate, epoxy resin or synthetic rubber as an adhesive.

6. The submersible electric pump floating impeller of claim 1, wherein: the cylindrical shaft sleeve (4) is fixed on the central shafts of the front wall (2), the rear wall (3) and the hub (7) through bonding positions; and the cylinder sleeve (4) is fixed on the pump shaft in a rotationally fixed manner in the mounted state of the guide vane (1).

7. The submersible electric pump floating impeller of claim 1, wherein: the pump shell (9) comprises a shell (11), a cover plate (12), a hub sleeve (13), a B circular through groove (14) and a molding disc (15); the molding disc (15) is welded at one end of the shell (11); the inner wall of the shell (11) and the cover plate (12) are welded with each other; a B circular through groove (14) is arranged in the center of the cover plate (12); a hub sleeve (13) is welded on the end surface of the outer side of the cover plate (12); wherein the hub sleeve (13) is concentrically fixed with the B circular through groove (14); the hub sleeve (13) is mutually matched and connected with the hub (7).

8. A submersible electric pump floating impeller as claimed in claim 1 or 7, characterized in that: parts of the pump shell (9) are made of stainless steel materials; the wall thickness of the hub sleeve (13) is equal to the thickness of the circular notch (8) in the hub (7); and the inner diameter of the circular through groove (14) B is equal to the outer diameter of the circular through groove (6) A.

9. The submersible electric pump floating impeller of claim 1, wherein: the guide wheel (10) comprises a guide wheel wall (16), blades (17), a shaft hole (18), a sleeve ring groove (19) and a water diversion port (20); a sleeve ring groove (19) is arranged on the side surface of the guide wheel wall (16); one end of the guide wheel wall (16) is uniformly provided with eight blades (17) at equal intervals along the circumferential direction of the guide wheel (10); the center of the guide wheel wall (16) is provided with a shaft hole (18); wherein a water diversion port (20) is arranged on the annular sleeve groove (19) between every two adjacent blades (17).

10. A submersible electric pump floating impeller as claimed in claim 1, 8 or 9 or wherein: the inner diameter of the shaft hole (18) is equal to the outer diameter of the cylindrical shaft sleeve (4); and the inner diameter of the shaft hole (18) is smaller than the outer diameter of the circular through groove (6) A and the inner diameter of the circular through groove (14) B.