Large-flow multi-drawstring water pump

Abstract

A large-flow multi-drawstring water pump comprises a water inlet seat, a plurality of water inlet holes circumferentially and evenly distributed in the water inlet seat and a motor arranged in the water inlet seat, a rotating shaft is arranged at the upper end of a motor shaft of the motor, the rotating shaft upwards penetrates out of the water inlet seat, a plurality of impellers evenly distributed in the axial direction are arranged on the rotating shaft, and the impellers are covered with impeller shells matched with the impellers. The impeller shell located on the uppermost side is provided with a water outlet shell, the upper end face of the water outlet shell is provided with a water outlet communicated with the inner space of the water outlet shell, and the edge of an end opening of the upper end of the impeller shell extends inwards to form an annular upper positioning part. According to the large-flow multi-drawstring water pump, the number of the drawstrings can be effectively increased while the number of the water inlet holes in the water inlet base is guaranteed, the effect that the impeller shells are fastened through the multiple drawstrings is achieved, the stability and the sealing performance between the overlapped impeller shells are effectively guaranteed, and the situation that the impeller shells incline laterally is effectively avoided.

Description

Technical Field

[0001] The utility model relates to a water pump, in particular to a large-flow multi-pull belt water pump. Background Art

[0002] A water pump is a device used for suction and transportation. There are many kinds of water pumps. Deep well pump is one of them. It is a water pump immersed in a groundwater well to suction and transport water. Deep well pump is different from other ordinary water pumps. It has multiple impellers, and each impeller is covered with a corresponding impeller housing. Multiple impeller housings are superimposed on each other. The water outlet housing of the deep well pump is installed above the top impeller housing, and the water inlet seat is installed below the bottom impeller housing. As the water flows into the water inlet seat, it will be transported toward the water outlet housing under the action of multiple impellers, and finally sent out from the water outlet on the water outlet housing to achieve the water delivery effect.

[0003] A number of tie straps evenly distributed on the outside of the impeller are connected between the water outlet housing and the water inlet seat of the deep well pump, which have the effect of tightening the impeller housing. In order to ensure that the water flow can quickly enter the interior of the water inlet seat, a plurality of water inlet holes are provided, which leads to a reduction in the position on the water inlet seat that can be used to fix the lower end of the tie strap, and ultimately limits the number of tie straps that can be used. In order to ensure its own high head and large flow, the deep well pump has a large number of impellers, resulting in multiple impeller housings being stacked to form a higher height. If the number of tie straps used for fixing is small, it is impossible to effectively stabilize all the impeller housings, so that the impeller housings stacked on each other cannot be tightly fixed, resulting in water leakage. At the same time, the impeller housing is prone to tilting under the action of gravity, which eventually causes the inner wall of the impeller housing to contact the impeller, affecting the normal rotation of the impeller. Summary of the invention

[0004] The utility model aims to solve the existing technical problem and provide a large-flow multi-pull-belt water pump, which can effectively increase the number of pull straps while ensuring the number of water inlet holes on the water inlet seat, thereby achieving the effect of fastening the impeller casing with multiple pull straps, effectively ensuring the stability and sealing between the impeller casings stacked on each other, and effectively avoiding the impeller casing from tilting.

[0005] The technical solution adopted by the utility model to solve the above technical problems is:

[0006] The utility model discloses a large-flow multi-pull belt water pump, comprising a water inlet seat, a plurality of water inlet holes uniformly distributed on the water inlet seat in a circumferential manner, and a motor arranged in the water inlet seat, a rotating shaft is arranged at the upper end of the motor shaft of the motor, the rotating shaft passes upward to the outside of the water inlet seat, a plurality of axially uniformly distributed impellers are arranged on the rotating shaft, the impeller outer cover is provided with an impeller shell matching with it, the impeller shell located at the uppermost side is provided with a water outlet shell, the upper end surface of the water outlet shell is provided with a water outlet communicating with the internal space thereof, an annular upper positioning portion is extended inwardly from the edge of the upper end port of the impeller shell; an annular lower positioning portion is extended inwardly from the edge of the lower end port of the impeller shell; the upper positioning portion has an annular positioning protrusion; the lower positioning portion at the lower end of one impeller shell is sleeved on the positioning protrusion at the upper end of the impeller shell adjacent thereto The outer surface of the impeller housing is provided with a ring-shaped clamping portion, and the ring-shaped clamping portion is provided with a ring-shaped clamping portion. The lower positioning portion at the lower end of the impeller housing is sleeved outside the clamping portion and fits with the upper end surface of the fastening seat. The outer wall of the middle part of the fastening seat is provided with a ring-shaped connecting plate. The connecting plate is provided with a plurality of connecting holes evenly distributed around the circumference. The outer wall of the water outlet housing is provided with a ring-shaped clamping step. The outer cover of the water outlet housing is provided with a connecting sleeve matching with it, and the lower end surface of the connecting sleeve fits with the clamping step. The connecting sleeve is provided with a plurality of clamping holes corresponding to the positions of the connecting holes. The clamping hole and the connecting hole are connected by a drawstring, and the inner wall of the drawstring fits with the outer wall of the impeller.

[0007] A screw is provided at the lower end of the pull strap; the lower end of the screw passes downward through the corresponding connecting hole and is screwed with a nut that fits the lower surface of the connecting plate; a limiting piece matching the fixing hole is provided in the lower part of the fixing hole; there is a snap-in spacing between the upper side wall of the limiting piece and the upper inner wall of the fixing hole; a bending portion located between the snap-in spacing is provided at the upper end of the pull strap, and the upper end of the bending portion is inclined toward the center of the water outlet housing; a connecting portion located between the inner wall of the connecting sleeve and the outer wall of the water outlet housing is provided at the upper end of the bending portion.

[0008] The lower side wall of the limiting member fits with the lower side wall of the locking hole; a notch is provided in the middle of the lower side wall of the limiting member; a limiting foot is provided at the center of the inner wall above the notch; the lower end of the limiting foot is bent toward the center of the water outlet housing and pressed against the inner edge of the lower side wall of the locking hole.

[0009] The upper end port of the connecting sleeve extends inwardly to form a guide ring on the water outlet housing; the inner wall of the guide ring is in contact with the outer wall of the water outlet housing.

[0010] The positioning protrusion on the upper end of the impeller housing at the uppermost side is covered with a sealing sleeve matched therewith; the outer wall of the lower end of the sealing sleeve is provided with an annular sealing step; the lower end of the water outlet housing is covered outside the sealing sleeve and pressed against the sealing step.

[0011] The outer wall of the lower end of the fastening seat is provided with a fixing portion that fits with the upper end surface of the water inlet seat; the fixing portion is provided with a plurality of through holes evenly distributed in a circumference; the upper end surface of the water inlet seat is provided with a plurality of screw holes corresponding to the positions of the through holes; a screw passes downward through the through hole and is screwed into the screw hole, and the lower surface of the screw head fits with the upper surface of the fixing portion.

[0012] An axle seat is arranged in the middle of the fastening seat; an axle hole is arranged in the center of the axle seat, and the rotating shaft passes through the axle hole; a bearing set outside the rotating shaft is arranged in the axle hole.

[0013] The beneficial effects of the utility model are:

[0014] Compared with the prior art, the connecting plate of the middle outer wall of the fastening seat of the large-flow multi-pull-belt water pump adopting the structure of the utility model is different from the water inlet seat, and no other holes need to be set. Therefore, a sufficient number of connecting holes can be set on the connecting plate to connect the lower end of the drawstring. When the connection position is sufficient, a larger number of drawstrings can be set on the outer ring of the impeller shell, and the presence of the drawstring can fasten all the impeller shells together. As the number of drawstrings increases, the fastening force between the upper and lower adjacent impeller shells will become further strengthened. The lower surface of the lower positioning part of the upper impeller shell can fit tightly on the upper surface of the upper positioning part of the lower impeller shell, effectively ensuring the sealing between the upper and lower adjacent impeller shells, effectively avoiding water leakage, and effectively avoiding the impeller shell from tilting due to insufficient fastening force, thereby effectively avoiding the impeller shell from tilting and causing its own inner wall to touch the impeller, effectively ensuring the normal operation of the impeller, thereby ensuring the stability of the water pump when pumping water. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a cross-sectional view of the utility model large flow multi-pull belt water pump;

[0016] Figure 2 yes Figure 1 An enlarged view of part A;

[0017] Figure 3 yes Figure 1 An enlarged view of part B;

[0018] Figure 4 yes Figure 1 An enlarged view of the C portion;

[0019] Figure 5 yes Figure 1 An enlarged view of the D portion;

[0020] Figure 6 A schematic diagram of the structure of the utility model large flow multi-pull belt water pump after removing the pull belt;

[0021] Figure 7 It is a structural schematic diagram of the connecting sleeve;

[0022] Figure 8 It is a structural schematic diagram of the limiter;

[0023] Fig. 9 A schematic structural diagram of a large flow multi-pull belt water pump according to the utility model. DETAILED DESCRIPTION

[0024] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments:

[0025] See also Figures 1 to 9 The utility model provides a large flow multi-pull belt water pump, including a water inlet seat 1, a plurality of water inlet holes 2 evenly distributed on the water inlet seat in a circumferential manner, and a motor 3 arranged in the water inlet seat, a rotating shaft 4 is arranged on the upper end of the motor shaft of the motor 3, and the rotating shaft 4 is upwardly extended to the outside of the water inlet seat 1, and a plurality of axially evenly distributed impellers 5 are arranged on the rotating shaft 4, and the impeller 5 is covered with an impeller housing 6 matching with it, and the impeller housing 6 located on the upper side is provided with a water outlet housing 7, and the upper end surface of the water outlet housing 7 is provided with a water outlet 8 intersecting with its internal space, and an annular upper positioning portion 9 is extended inwardly from the edge of the upper end port of the impeller housing 6; an annular lower positioning portion 10 is extended inwardly from the edge of the lower end port of the impeller housing 6; the upper positioning portion 9 has an annular positioning protrusion 11; the lower positioning portion 10 at the lower end of one of the impeller housings 6 is sleeved outside the positioning protrusion 11 at the upper end of the adjacent impeller housing 6, and is connected with the adjacent impeller The upper surface of the upper positioning portion 9 at the upper end of the wheel housing 6 fits together; a fastening seat 12 is provided between the impeller housing 6 located at the lowest side and the water inlet seat 1; an annular clamping portion 13 is provided on the upper end surface of the fastening seat 12; the lower positioning portion 10 located at the lower end of the impeller housing 6 at the lowest side is sleeved outside the clamping portion 13 and fits together with the upper end surface of the fastening seat 12; an annular connecting plate 14 is provided on the outer wall of the middle part of the fastening seat 12; a plurality of connecting holes 15 evenly distributed around the circumference are provided on the connecting plate 14; an annular clamping step 16 is provided on the outer wall of the water outlet housing 7; a connecting sleeve 17 matching it is provided on the outer sleeve of the water outlet housing 7, and the lower end surface of the connecting sleeve 17 fits together with the clamping step 16; a plurality of clamping holes 18 corresponding to the position of the connecting holes 15 are provided on the connecting sleeve 17; the clamping hole 18 is connected to the connecting hole 15 by a drawstring 19, and the inner wall of the drawstring 19 fits together with the outer wall of the impeller 5.

[0026] A screw rod 20 is provided at the lower end of the pull strap 19; the lower end of the screw rod 20 passes downward through the corresponding connecting hole 15 and is screwed with a nut 21 that fits the lower surface of the connecting plate 14; a limiting member 22 matching the limiting member 22 is provided in the lower part of the positioning hole 18; a snap-in spacing 23 is provided between the upper side wall of the limiting member 22 and the upper inner wall of the positioning hole 18; a bending portion 24 located between the snap-in spacing 23 is provided at the upper end of the pull strap 19, and the upper end of the bending portion 24 is inclined toward the center of the water outlet housing 7; a connecting portion 25 located between the inner wall of the connecting sleeve 17 and the outer wall of the water outlet housing 7 is provided at the upper end of the bending portion 24.

[0027] The lower side wall of the limiting member 22 fits with the lower side wall of the locking hole 18; a notch 26 is provided in the middle of the lower side wall of the limiting member 22; a limiting foot 27 is provided in the center of the inner wall above the notch 26; the lower end of the limiting foot 27 is bent toward the center of the water outlet housing 7 and pressed against the inner edge of the lower side wall of the locking hole 18.

[0028] The upper end port of the connecting sleeve 17 extends inwardly to form a guide ring 28 which is mounted on the water outlet housing 7 ; the inner wall of the guide ring 28 is in contact with the outer wall of the water outlet housing 7 .

[0029] The positioning protrusion 11 at the upper end of the impeller housing 6 at the uppermost side is covered with a sealing sleeve 29 matching with it; the outer wall of the lower end of the sealing sleeve 29 is provided with an annular sealing step 30; the lower end of the water outlet housing 7 is covered outside the sealing sleeve 29 and pressed against the sealing step 30.

[0030] The outer wall of the lower end of the fastening seat 12 is provided with a fixing portion 31 that fits with the upper end surface of the water inlet seat 1; the fixing portion 31 is provided with a plurality of through holes 32 that are evenly distributed in a circumference; the upper end surface of the water inlet seat 1 is provided with a plurality of screw holes 33 that correspond to the positions of the through holes 32; a screw 34 passes downward through the through hole 32 and is screwed into the screw hole 33, and the lower surface of the head of the screw 34 fits with the upper surface of the fixing portion 31.

[0031] A shaft seat 35 is disposed in the middle of the fastening seat 12 ; a shaft hole 36 is disposed in the center of the shaft seat 35 , and the rotating shaft 4 passes through the shaft hole 36 ; a bearing 37 is disposed in the shaft hole 36 and is mounted outside the rotating shaft 4 .

[0032] The method of using the utility model is as follows:

[0033] Before using the water pump, you need to put the water pump into the actual required water environment. At this time, the external water will enter the water inlet seat 1 through the water inlet hole 2 on the water inlet seat 1. At this time, the internal space of the water inlet seat 1 is connected with the internal space of the impeller housing 6 located at the bottom through the internal space of the fastening seat 12. As the external water flow continues to flow into the water inlet seat 1, the water flow will enter the impeller housing 6 at the bottom through the internal space of the fastening seat 12, and finally fill the impeller housing 6. When the water pump needs to be used, it can be directly Then start the motor 3. At this time, the motor shaft of the motor 3 will drive the multiple impellers 5 to rotate synchronously through the rotating shaft 4, stirring the water flow in the impeller housing 6, so as to form suction at the water inlet hole 2, and continuously draw the external water flow into the water inlet seat 1. Then, under the action of the multiple impellers 5, the water flow in the impeller housing 6 is pushed toward the water outlet housing 7, and finally the water flows out from the water outlet 8 for use. In actual use, the water outlet 8 can be connected to the corresponding pipeline, which is more conducive to the transportation of water flow.

[0034] The connecting plate 14 arranged on the outer wall of the middle part of the fastening seat 12 is different from the water inlet seat 1, and no other holes need to be set. Therefore, a sufficient number of connecting holes 15 can be set on the connecting plate 14 for connecting the lower end of the drawstring 19. When the connection position is sufficient, a larger number of drawstrings 19 can be set on the outer ring of the impeller housing 6, and the existence of the drawstring 19 can fasten all the impeller housings 6 together. As the number of drawstrings 19 increases, the fastening force between the upper and lower adjacent impeller housings 6 will be further strengthened. The lower surface of the lower positioning portion 10 of the upper impeller housing 6 can be tightly fitted on the upper surface of the upper positioning portion 9 of the lower impeller housing 6, effectively ensuring the sealing between the upper and lower adjacent impeller housings 6, effectively avoiding water leakage, and effectively avoiding the impeller housing 6 from tilting due to insufficient fastening force, thereby effectively avoiding the impeller housing 6 from tilting and causing its own inner wall to touch the impeller 5, effectively ensuring the normal operation of the impeller 5, thereby ensuring the stability of the water pump when pumping water.

[0035] A screw 20 is provided at the lower end of the pull belt 19, and the lower end of the screw 20 passes downward through the corresponding connecting hole 15 and is screwed with a nut 21 that fits the lower surface of the connecting plate 14. A matching limiting member 22 is provided in the lower part of the positioning hole 18, and a snap-in spacing 23 is provided between the upper side wall of the limiting member 22 and the upper inner wall of the positioning hole 18. A bending portion 24 located between the snap-in spacing 23 is provided at the upper end of the pull belt 19, and the upper end of the bending portion 24 is inclined toward the center of the water outlet housing 7, and the upper end of the bending portion 24 is provided with a gap located between the inner wall of the connecting sleeve 17 and the outlet The connecting portion 25 between the outer walls of the water shell 7 can pull the pull belt 19 down as a whole through the tightening force of the nut 21. At this time, the upper side wall of the limit member 22 will limit the downward movement of the bending portion 24. At the same time, the connecting portion 25 is restricted between the inner wall of the connecting sleeve 17 and the outer wall of the water outlet shell 7, thereby effectively ensuring the tension and stability of the pull belt 19. The tension of the pull belt 19 can be directly adjusted by rotating the nut 21, and this fixing method is conducive to the disassembly and assembly of the upper and lower ends of the pull belt, which is convenient for the replacement of the pull belt 19, thereby facilitating the disassembly and assembly of the outer shell impeller 5.

[0036] The lower side wall of the limiting member 22 fits with the lower side hole wall of the locking hole 18, a notch 26 is provided in the middle of the lower side wall of the limiting member 22, and a limiting foot 27 is provided in the center of the inner wall above the notch 26, the lower end of the limiting foot 27 is bent toward the center of the water outlet housing 7 and pressed against the inner edge of the lower side hole wall of the locking hole 18, the existence of the limiting foot 27 can effectively improve the stability of the limiting member 22 when it is stuck in the locking hole 18, when the bending portion 24 presses the limiting member 22 vertically downward, the limiting foot 27 will be restricted in the gap between the inner wall of the connecting sleeve 17 and the outer wall of the water outlet housing 7, effectively preventing the limiting member 22 from falling off.

[0037] A guide ring 28 is extended inward from the upper end of the connecting sleeve 17 to form a guide ring 28 on the water outlet housing 7. The inner wall of the guide ring 28 fits the outer wall of the water outlet housing 7. The existence of the guide ring 28 can effectively ensure that the connecting sleeve 17 can maintain a coaxial state with the water outlet housing 7 under the pulling force of the pull belt 19, and effectively avoid the gap between the outer wall of the water outlet housing 7 and the inner wall of the connecting sleeve 17 where the connecting part 25 can be inserted, causing the connecting sleeve 17 to shake.

[0038] The positioning protrusion 11 at the upper end of the impeller housing 6 located on the uppermost side is covered with a sealing sleeve 29 that matches it, and the outer wall of the lower end of the sealing sleeve 29 is provided with an annular sealing step 30. The lower end of the water outlet housing 7 is covered outside the sealing sleeve 29 and pressed against the sealing step 30. This fixing method is not only conducive to the disassembly and assembly of the water outlet housing 7, but also can effectively ensure the sealing between the water outlet housing 7 and the impeller housing 6 located on the uppermost side.

[0039] The outer wall of the lower end of the fastening seat 12 is provided with a fixing portion 31 that fits with the upper end surface of the water inlet seat 1, and the fixing portion 31 is provided with a plurality of through holes 32 that are evenly distributed in a circumference, and the upper end surface of the water inlet seat 1 is provided with a plurality of screw holes 33 that correspond to the positions of the through holes 32. A screw 34 passes downward through the through hole 32 and is screwed into the screw hole 33. The lower surface of the head of the screw 34 fits with the upper surface of the fixing portion 31. This fixing method can not only ensure the stability of the impeller casing 6 located at the lower side when it is connected to the water inlet seat 1 through the fastening seat 12, but also facilitates the disassembly and assembly of the fastening seat 12.

[0040] A shaft seat 35 is provided in the middle of the fastening seat 12, and a shaft hole 36 is provided in the center of the shaft seat 35. The rotating shaft passes through the shaft hole 36, and a bearing 37 outside the rotating shaft 4 is provided in the shaft hole 36. This fixing method can not only effectively ensure the smoothness of the rotating shaft 4 driving the impeller 5, but also effectively avoid the situation where the rotating shaft 4 is too long and causes the rotating shaft 4 to tilt to one side, and avoid the situation where the rotating shaft 4 is eccentric.

Claims

1. A large flow multi-pull belt water pump, comprising a water inlet seat, a plurality of water inlet holes evenly distributed on the water inlet seat in a circumferential manner, and a motor arranged in the water inlet seat, a rotating shaft is arranged at the upper end of the motor shaft of the motor, the rotating shaft passes upward to the outside of the water inlet seat, a plurality of axially evenly distributed impellers are arranged on the rotating shaft, the impeller outer cover is provided with an impeller housing matched therewith, the impeller housing located at the uppermost side is provided with a water outlet housing, the upper end surface of the water outlet housing is provided with a water outlet communicating with the internal space thereof, and the characteristics are as follows: An annular upper positioning portion is extended inwardly from the edge of the upper end port of the impeller housing; an annular lower positioning portion is extended inwardly from the edge of the lower end port of the impeller housing; the upper positioning portion has an annular positioning protrusion; the lower positioning portion at the lower end of one impeller housing is sleeved outside the positioning protrusion at the upper end of the adjacent impeller housing, and fits with the upper surface of the upper positioning portion at the upper end of the adjacent impeller housing; a fastening seat is provided between the impeller housing at the lowest side and the water inlet seat; an annular clamping portion is provided on the upper end surface of the fastening seat; the impeller housing at the lowest side is provided with a The lower positioning part at the lower end of the wheel housing is sleeved outside the locking part and fits with the upper end surface of the fastening seat; the outer wall of the middle part of the fastening seat is provided with an annular connecting plate; the connecting plate is provided with a plurality of connecting holes evenly distributed around the circumference; the outer wall of the water outlet housing is provided with an annular locking step; the outer cover of the water outlet housing is provided with a connecting sleeve matching it, and the lower end surface of the connecting sleeve fits with the locking step; the connecting sleeve is provided with a plurality of locking holes corresponding to the positions of the connecting holes; the locking hole and the connecting hole are connected by a drawstring, and the inner wall of the drawstring fits with the outer wall of the impeller.

2. A large flow multi-pull belt water pump according to claim 1, characterized in that: A screw is provided at the lower end of the pull strap; the lower end of the screw passes downward through the corresponding connecting hole and is screwed with a nut that fits the lower surface of the connecting plate; a limiting piece matching the fixing hole is provided in the lower part of the fixing hole; there is a snap-in spacing between the upper side wall of the limiting piece and the upper inner wall of the fixing hole; a bending portion located between the snap-in spacing is provided at the upper end of the pull strap, and the upper end of the bending portion is inclined toward the center of the water outlet housing; a connecting portion located between the inner wall of the connecting sleeve and the outer wall of the water outlet housing is provided at the upper end of the bending portion.

3. A large flow multi-pull belt water pump according to claim 2, characterized in that: The lower side wall of the limiting member fits with the lower side wall of the locking hole; a notch is provided in the middle of the lower side wall of the limiting member; a limiting foot is provided at the center of the inner wall above the notch; the lower end of the limiting foot is bent toward the center of the water outlet housing and pressed against the inner edge of the lower side wall of the locking hole.

4. A large flow multi-pull belt water pump according to claim 1, characterized in that: The upper end port of the connecting sleeve extends inwardly to form a guide ring for the water outlet housing; the inner wall of the guide ring is in contact with the outer wall of the water outlet housing.

5. A large flow multi-pull belt water pump according to claim 1, characterized in that: The positioning protrusion on the upper end of the impeller housing at the uppermost side is covered with a sealing sleeve matched therewith; the outer wall of the lower end of the sealing sleeve is provided with an annular sealing step; the lower end of the water outlet housing is covered outside the sealing sleeve and pressed against the sealing step.

6. A large flow multi-pull belt water pump according to claim 1, characterized in that: The outer wall of the lower end of the fastening seat is provided with a fixing portion that fits with the upper end surface of the water inlet seat; the fixing portion is provided with a plurality of through holes evenly distributed in a circumference; the upper end surface of the water inlet seat is provided with a plurality of screw holes corresponding to the positions of the through holes; a screw passes downward through the through hole and is screwed into the screw hole, and the lower surface of the screw head fits with the upper surface of the fixing portion.

7. A large flow multi-pull belt water pump according to claim 1, characterized in that: An axle seat is arranged in the middle of the fastening seat; an axle hole is arranged in the center of the axle seat, and the rotating shaft passes through the axle hole; a bearing set outside the rotating shaft is arranged in the axle hole.

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