High-sealing high-section-number water pump

Abstract

A high-sealing high-section-number water pump comprises a water inlet base and a motor arranged in the water inlet base, a rotating shaft is arranged at the upper end of a motor shaft of the motor, a plurality of water inlet holes communicated with the inner space of the water inlet base are formed in the outer wall of the water inlet base, and a connecting base coaxial with the motor is arranged over the water inlet base. A central hole axially penetrating through the connecting seat is formed in the center of the connecting seat; a guide plate is arranged in the center hole; a guide hole is formed in the center of the guide plate; a guide bearing sleeved outside the rotating shaft is arranged in the guide hole; and a plurality of lower impellers which are uniformly distributed in the axial direction are arranged at the lower part of the rotating shaft. According to the high-sealing and high-section-number water pump, the pulling belt can have enough pressure bearing capacity, the situation that the impeller shells shake is avoided, the coaxiality of the impeller shells is guaranteed, meanwhile, the situation that the overlapped impeller shells cannot be tightly attached due to the fact that the pulling belt is too long to be soft can be avoided, and the service life of the impeller shells is prolonged. And the water leakage problem is effectively avoided.

Description

Technical Field

[0001] The utility model relates to a water pump, in particular to a high-sealing and high-section water pump. Background Art

[0002] High-section water pumps are different from ordinary water pumps. The motor shaft of the high-section water pump is connected to multiple impellers, and the impellers are evenly distributed axially. When the motor is running, multiple impellers rotate simultaneously to transport water, thereby effectively increasing the head and flow rate and ensuring the water delivery effect. Each impeller has a corresponding impeller housing covering the outside, and each impeller housing is stacked and placed, mainly relying on the tensioning force of several drawstrings evenly distributed on the outer ring of the water pump to make the superimposed impeller housings fit tightly to ensure the sealing of the joint between the two and avoid water leakage.

[0003] In actual use, the length of the tie band will increase with the increase of the number of sections of the high-section water pump. Therefore, when the high-section water pump has more impellers, the length of the tie band will become longer. However, when the length of the tie band becomes longer, the pressure-bearing capacity of the tie band will become weaker and it will be more prone to fatigue. In this case, it is extremely difficult for the inner wall of the tie band to be pressed tightly against the outer wall of the impeller casing to ensure the coaxiality of the impeller casing. If the position of the impeller casing deviates, the inner wall of the impeller casing is very likely to be squeezed on the impeller, generating noise. In severe cases, it will affect the normal rotation of the impeller. At the same time, it is extremely difficult for the tie band to press the superimposed impeller casings together, and the sealing between the superimposed impeller casings cannot be guaranteed, which is very likely to cause water leakage. Summary of the invention

[0004] The utility model aims to solve the existing technical problem and provide a high-sealing and high-section water pump, which can make the pull belt have sufficient pressure-bearing capacity to avoid the shaking of the impeller housing and ensure the coaxiality of the impeller housing. At the same time, it can avoid the pull belt becoming weak due to its own excessive length, so that the superimposed impeller housings cannot fit tightly, thereby effectively preventing water leakage.

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

[0006] The utility model discloses a high-seal and high-section water pump, comprising a water inlet seat, a motor arranged in the water inlet seat, a rotating shaft is arranged at the upper end of the motor shaft of the motor, a plurality of water inlet holes which are intersecting with the inner space of the water inlet seat are arranged on the outer wall of the water inlet seat, a connecting seat which is coaxial with the motor is arranged just above the water inlet seat; a center hole which axially penetrates the connecting seat is arranged at the center of the connecting seat; a guide plate is arranged in the center hole; a guide hole is arranged in the center of the guide plate; a set of guide bearings which are arranged outside the rotating shaft are arranged in the guide hole; a plurality of lower impellers which are evenly distributed in the axial direction are arranged at the lower part of the rotating shaft, and the plurality of lower impellers are located between the connecting seat and the water inlet seat; the outer cover of the lower impeller has lower impellers which match with the lower impellers. The impeller shell is a plurality of lower impeller shells stacked and fitted with each other; a plurality of upper impellers evenly distributed in the axial direction are provided on the upper part of the rotating shaft, and the plurality of upper impellers are located above the connecting seat; the upper impeller outer cover is provided with an upper impeller shell matching with it; a plurality of upper impeller shells are stacked and fitted with each other; a water outlet end cover matching with it is provided on the upper side of the upper impeller shell located at the top, and a water outlet hole communicating with its internal space is provided at the center of the upper end surface of the water outlet end cover; the water outlet end cover is connected to the connecting seat by a plurality of upper tensioning structures evenly distributed on the outside of the upper impeller shell in a circumferential manner; the connecting seat is connected to the water inlet seat by a plurality of lower tensioning structures evenly distributed on the outside of the lower impeller shell in a circumferential manner.

[0007] The upper tensioning structure includes a plurality of upper pull belts uniformly distributed in a circle outside the upper impeller housing; the outer wall of the connecting seat is provided with a plurality of grooves corresponding to the positions of the upper pull belts; a connecting plate is provided in the middle of the groove; a connecting hole is provided on the connecting plate; a threaded sleeve is provided at the lower end of the upper pull belt; the upper end of a fixing screw passes upward through the connecting hole and is screwed into the threaded sleeve, and the head of the fixing screw is in contact with the lower surface of the connecting plate; the upper end of the upper pull belt is fixed to the water outlet end cover; the outer wall of the upper end of the connecting seat is provided with a plurality of middle limit planes in contact with the inner wall of the upper pull belt.

[0008] The lower outer wall of the water outlet end cover is provided with a plurality of positioning grooves corresponding to the positions of the grooves; the upper outer wall of the water outlet end cover is provided with a ring-shaped positioning step; the positioning step is provided with a plurality of limiting holes that are connected with the positioning groove; an extension arm is extended from the upper end of the upper pull belt toward the inside of the positioning groove, and one end of the extension arm adjacent to the center of the water outlet end cover is inclined upward; a limiting arm matching the limiting hole is extended upward from the end of the extension arm; a positioning piece matching with it is provided in the positioning groove, and the lower surface of the extension arm is in contact with the upper surface of the positioning piece.

[0009] A locking groove is provided on the lower groove wall of the positioning groove; and a locking portion matching the locking groove is provided on the lower surface of the positioning piece.

[0010] The lower tensioning structure includes a plurality of lower pull belts evenly distributed in a circle outside the lower impeller casing; a limit groove is provided on the lower side groove wall of the groove; the upper end of the lower pull belt is bent downward to form a limit hook matching the limit groove; the outer wall of the water inlet seat is provided with a plurality of auxiliary grooves evenly distributed in a circle, and the water inlet hole is provided at the bottom of the auxiliary groove; an auxiliary plate is provided in the middle of the auxiliary groove; an auxiliary hole is provided on the auxiliary plate; a lower fixing screw is provided at the lower end of the lower pull belt; the lower end of the lower fixing screw passes downward through the auxiliary hole and is screwed with a lower limit nut that fits with the lower surface of the auxiliary plate; the outer wall of the upper end of the water inlet seat is provided with a plurality of lower limit planes that fit with the inner wall of the lower pull belt.

[0011] A limiting portion is extended outwardly from the outer wall of the lower end of the water inlet seat; a supporting foot is extended downwardly from the outer edge of the limiting portion; and a plurality of adjusting holes which are connected with the auxiliary grooves are arranged on the lower surface of the water inlet seat.

[0012] The outer cover of the water inlet seat has a filter cover, and the lower end surface of the filter cover is in contact with the upper surface of the limiting part; the outer wall of the filter cover is provided with a plurality of filter holes which are connected with its internal space; the outer wall of the lower pull belt is coplanar with the outer peripheral surface of the upper end of the water inlet seat; the outer wall of the lower pull belt and the outer peripheral surface of the upper end of the water inlet seat are both in contact with the inner wall of the filter cover.

[0013] The upper impeller shell and the lower impeller shell are both composed of an upper cover shell and a lower cover shell located directly below the upper cover shell; an annular embedded portion is extended downward from the inner edge of the lower end surface of the upper cover shell; an annular locking sleeve is extended upward from the outer edge of the upper end surface of the lower cover shell, and the locking sleeve is sleeved outside the embedded portion; the upper end surface of the locking sleeve is in contact with the lower end surface of the upper cover shell, and the lower end surface of the embedded portion is in contact with the upper end surface of the lower cover shell.

[0014] An annular positioning protrusion is provided on the upper surface of the upper cover shell; an annular sealing flange is extended inward from the inner wall of the lower end port of the lower cover shell; the sealing flanges of one of the upper impeller shell and the lower impeller shell are sleeved outside the positioning protrusions of the upper impeller shell and the lower impeller shell located below; a positioning ring is extended upward from the outer edge of the lower surface of the water outlet end cover to be sleeved outside the positioning protrusion of the upper impeller shell located at the top; an annular positioning part is provided on the upper surface of the water inlet seat; the sealing flange of the lower impeller shell located at the bottom is in contact with the upper surface of the water inlet seat and sleeved outside the positioning part.

[0015] The beneficial effects of the utility model are:

[0016] Compared with the prior art, the connecting seat of the high-sealing and high-section water pump adopting the structure of the utility model can divide all the impeller casings into two parts, the upper impeller casing and the lower impeller casing. Therefore, there is no need for a pull belt to extend from the top water outlet end cover to the bottom water inlet seat for connection. In disguise, a long pull belt is cut into two shorter upper pull belts and lower pull belts. The shorter pull belt has extremely high pressure bearing capacity and can generate extremely high tensioning force. When the upper pull belt is used to connect the water outlet end cover and the connecting seat, it can effectively ensure the tightness and coaxiality of several upper impeller casings located between the water outlet end cover and the connecting seat when they are stacked, avoiding water leakage and shaking of the upper impeller casing. When the lower pull belt is used to connect the water inlet seat and the connecting seat, it can effectively ensure the tightness and coaxiality of several lower impeller casings located between the connecting seat and the water inlet seat when they are stacked, avoiding water leakage and shaking of the lower impeller casing. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a cross-sectional view of the utility model high-seal high-section water pump;

[0018] Figure 2 yes Figure 1 An enlarged view of part A;

[0019] Figure 3 yes Figure 1 An enlarged view of part B;

[0020] Figure 4 yes Figure 1 An enlarged view of the C portion;

[0021] Figure 5 yes Figure 1 An enlarged view of the D portion;

[0022] Figure 6 yes Figure 5 An enlarged view of the E portion of FIG.

[0023] Figure 7 This is a schematic diagram of the structure of the utility model high-seal high-section water pump;

[0024] Figure 8 It is a structural diagram of the connecting seat;

[0025] Fig. 9 It is a structural diagram of the water inlet seat. DETAILED DESCRIPTION

[0026] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments:

[0027] See also Figures 1 to 9The utility model provides a high-sealing and high-section water pump, comprising a water inlet seat 1, a motor 2 arranged in the water inlet seat 1, a rotating shaft 3 being arranged at the upper end of the motor shaft of the motor 2, a plurality of water inlet holes 4 being intersected with the inner space thereof being arranged on the outer wall of the water inlet seat 1, a connecting seat 5 being coaxial with the motor 2 being arranged just above the water inlet seat 1; a center hole 6 axially penetrating the connecting seat 5 being arranged at the center; a guide plate 7 being arranged in the center hole 6; a guide hole 8 being arranged in the center of the guide plate 7; a set of guide bearings 9 outside the rotating shaft 3 being arranged in the guide hole 8; a plurality of lower impellers 10 evenly distributed in the axial direction being arranged at the lower part of the rotating shaft 3, and the plurality of lower impellers 10 being located between the connecting seat 5 and the water inlet seat 1; the outer cover of the lower impeller 10 is provided with a lower impeller outer cover matching with the lower impeller Shell 11; several lower impeller shells 11 are stacked and fitted with each other; several upper impellers 12 are evenly distributed in the axial direction on the upper part of the rotating shaft 3, and several upper impellers 12 are located above the connecting seat 5; the upper impeller 12 is covered with an upper impeller shell 13 matching it; several upper impeller shells 13 are stacked and fitted; a water outlet cover 14 matching it is provided on the upper side of the upper impeller shell 13 located at the top, and a water outlet hole 15 communicating with its internal space is provided at the center of the upper end surface of the water outlet cover 14; the water outlet cover 14 and the connecting seat 5 are connected by several upper tensioning structures evenly distributed on the outside of the upper impeller shell 13 in a circumferential manner; the connecting seat 5 and the water inlet seat 1 are connected by several lower tensioning structures evenly distributed on the outside of the lower impeller shell 11 in a circumferential manner.

[0028] The upper tensioning structure includes a plurality of upper pull belts 16 uniformly distributed in a circle outside the upper impeller housing 13; the outer wall of the connecting seat 5 is provided with a plurality of grooves 17 corresponding to the positions of the upper pull belts 16; a connecting plate 18 is provided in the middle of the groove 17; a connecting hole 19 is provided on the connecting plate 18; a threaded sleeve 20 is provided at the lower end of the upper pull belt 16; the upper end of a fixing screw 21 passes upward through the connecting hole 19 and is screwed into the threaded sleeve 20, and the head of the fixing screw 21 is in contact with the lower surface of the connecting plate 18; the upper end of the upper pull belt 16 is fixed on the water outlet end cover 14; the outer wall of the upper end of the connecting seat 5 is provided with a plurality of middle limit planes 23 in contact with the inner wall of the upper pull belt 16.

[0029] The lower outer wall of the water outlet end cover 14 is provided with a plurality of positioning grooves 24 corresponding to the positions of the grooves 17; the upper outer wall of the water outlet end cover 14 is provided with a ring-shaped positioning step 25; the positioning step 25 is provided with a plurality of limiting holes 26 that are connected with the positioning groove 24; an extension arm 27 is extended from the upper end of the upper pull belt 16 toward the inside of the positioning groove 24, and the end of the extension arm 27 adjacent to the center of the water outlet end cover 14 is inclined upward; a limiting arm 28 matching the limiting hole 26 is extended upward from the end of the extension arm 27; a positioning piece 29 matching it is provided in the positioning groove 24, and the lower surface of the extension arm 27 is in contact with the upper surface of the positioning piece 29.

[0030] A locking groove 30 is formed on the lower groove wall of the positioning groove 24 ; a locking portion 31 matching the locking groove 30 is formed on the lower surface of the positioning member 29 .

[0031] The lower tensioning structure includes a plurality of lower pull straps 32 uniformly distributed in a circle outside the lower impeller housing 13; a limit groove 33 is provided on the lower side wall of the groove 17; the upper end of the lower pull strap 32 is bent downward to form a limit hook 34 matching the limit groove 32; the outer wall of the water inlet seat 1 is provided with a plurality of auxiliary grooves 35 uniformly distributed in a circle, and the water inlet hole 4 is provided at the bottom of the auxiliary groove 35; an auxiliary plate 36 is provided in the middle of the auxiliary groove 35; an auxiliary hole 37 is provided on the auxiliary plate 36; a lower fixing screw 38 is provided at the lower end of the lower pull strap 32; the lower end of the lower fixing screw 38 passes downward through the auxiliary hole 37 and is screwed with a lower limit nut 39 that fits with the lower surface of the auxiliary plate 36; the outer wall of the upper end of the water inlet seat 1 is provided with a plurality of lower limit planes 40 that fit with the inner wall of the lower pull strap 32.

[0032] A limiting portion 41 extends outward from the outer wall of the lower end of the water inlet seat 1 ; a supporting foot 42 extends downward from the outer edge of the limiting portion 41 ; and a plurality of adjusting holes 43 communicating with the auxiliary grooves 35 are provided on the lower surface of the water inlet seat 1 .

[0033] The outer cover of the water inlet seat 1 has a filter cover 44, and the lower end surface of the filter cover 44 is in contact with the upper surface of the limiting portion 41; the outer wall of the filter cover 44 is provided with a plurality of filter holes 45 which are connected with its internal space; the outer wall of the lower pull belt 32 is coplanar with the outer peripheral surface of the upper end of the water inlet seat 1; the outer wall of the lower pull belt 32 and the outer peripheral surface of the upper end of the water inlet seat 1 are both in contact with the inner wall of the filter cover 44.

[0034] The upper impeller housing 13 and the lower impeller housing 11 are both composed of an upper cover shell 46 and a lower cover shell 47 located directly below the upper cover shell 46; an annular embedded portion 48 is extended downward from the inner edge of the lower end surface of the upper cover shell 46; an annular locking sleeve 49 is extended upward from the outer edge of the upper end surface of the lower cover shell 47, and the locking sleeve 49 is sleeved on the outside of the embedded portion 48; the upper end surface of the locking sleeve 49 is in contact with the lower end surface of the upper cover shell 46, and the lower end surface of the embedded portion 48 is in contact with the upper end surface of the lower cover shell 47.

[0035] An annular positioning protrusion 50 is provided on the upper surface of the upper cover shell 46; an annular sealing flange 51 is extended inward from the inner wall of the lower end port of the lower cover shell 47; the sealing flange 51 of one of the upper impeller shell 12 and the lower impeller shell 11 is sleeved outside the positioning protrusion 50 of the upper impeller shell 13 and the lower impeller shell 11 located below; the outer edge of the lower surface of the water outlet end cover 14 extends upward to form a positioning ring 52 that is sleeved outside the positioning protrusion 50 of the upper impeller shell 13 located at the top; an annular positioning portion 53 is provided on the upper surface of the water inlet seat 1; the sealing flange 51 of the lower impeller shell 11 located at the bottom is in contact with the upper surface of the water inlet seat 1 and sleeved outside the positioning portion 53.

[0036] The method of using the utility model is as follows:

[0037] The existence of the connecting seat 5 can divide all the impeller casings into two parts, the upper impeller casing 13 and the lower impeller casing 11. Therefore, there is no need for a drawstring to extend from the top water outlet end cover to the bottom water inlet seat 1 for connection. In disguise, a longer drawstring is cut into two shorter upper drawstrings 16 and lower drawstrings 32. The shorter drawstrings have extremely high pressure-bearing capacity and can generate extremely high tensioning force. When the upper drawstring 16 is used to connect the water outlet end cover 14 and the connecting seat 5, it can effectively ensure the tightness and coaxiality of the several upper impeller casings 13 located between the water outlet end cover 14 and the connecting seat 5 when stacked, avoiding water leakage and shaking of the upper impeller casing 13. When the lower drawstring 32 is used to connect the water inlet seat 1 and the connecting seat 5, it can effectively ensure the tightness and coaxiality of the several lower impeller casings 11 located between the connecting seat 5 and the water inlet seat 1 when stacked, avoiding water leakage and shaking of the lower impeller casing 11.

[0038] The upper tensioning structure includes a plurality of upper pull belts 16 uniformly distributed on the outer surface of the upper impeller housing 13 in a circumferential manner. The outer wall of the connecting seat 5 is provided with a plurality of grooves 17 corresponding to the positions of the upper pull belts 16. A connecting plate 18 is provided in the middle of the groove 17. A connecting hole 19 is provided on the connecting plate 18. A screw sleeve 20 is provided at the lower end of the upper pull belt 16. The upper end of a fixing screw 21 passes through the connecting hole 19 upward and is screwed into the screw sleeve 20. The head of the fixing screw 21 fits the lower surface of the connecting plate 18. The upper end of the upper pull belt 16 is fixed to the water outlet end cover 14. This fixing method can not only effectively ensure The upper pull belt 16 is stable when the lower end is fixed, and is convenient for quick disassembly and assembly of the lower end of the upper pull belt 16, and the outer wall of the upper end of the connecting seat 5 is provided with a plurality of middle limit planes 23 which fit with the inner wall of the upper pull belt 16. The existence of the middle limit planes 23 can effectively limit the upper pull belt 16 from flipping or shaking when connecting the water outlet end cover 14 and the connecting seat 5, and further ensure that the inner wall of the upper pull belt 16 is tightly fitted with the outer wall of the upper impeller casing 13 when connecting the water outlet end cover 14 and the connecting seat 5, and further avoid the shaking of the upper impeller casing 13 causing the inner wall of the upper impeller casing 13 to contact the upper impeller 12.

[0039] The lower outer wall of the water outlet end cover 14 is provided with a plurality of positioning grooves 24 corresponding to the positions of the grooves 17, and the upper outer wall of the water outlet end cover 14 is provided with an annular positioning step 25, and the positioning step 25 is provided with a plurality of limiting holes 26 that penetrate the positioning groove 24. An extension arm 27 extends from the upper end of the upper pull belt 16 toward the inner direction of the positioning groove 24, and the end of the extension arm 27 adjacent to the center of the water outlet end cover 14 is inclined upward, and a limiting arm 28 matching the limiting hole 26 is extended upward from the end of the extension arm 27. A positioning piece 29 matching it is provided in the positioning groove 24, and the lower surface of the extension arm 27 is in contact with the upper surface of the positioning piece 29. This fixing method can not only ensure the stability between the upper end of the upper pull belt 16 and the water outlet end cover 14, but also facilitate the disassembly of the upper end of the upper pull belt 16. It only needs to tilt the lower part of the upper pull belt 16 outward, and the limiting arm 28 can easily slide out from under the limiting hole 26 through the inclination of the extension arm 27.

[0040] A locking groove 30 is provided on the lower groove wall of the positioning groove 24, and a locking portion 31 matching the locking groove 30 is provided on the lower surface of the positioning member 29. The existence of the locking portion 31 can further improve the stability of the positioning member 29 when it is embedded in the positioning groove 24, thereby ensuring that the extension arm 27 can be stably pressed against the positioning member under the vertical downward pulling force of the upper pull belt, effectively improving the stability of the positioning member 29 when restricting the downward movement of the extension arm 27.

[0041] The lower tensioning structure includes a limit groove 32 provided on the lower side groove wall of the groove 17, the upper end of the lower pull belt 32 is bent downward to form a limit hook 34 matching the limit groove 32, the outer wall of the water inlet seat 1 is provided with a plurality of auxiliary grooves 35 evenly distributed in a circumference, the water inlet hole 4 is provided at the bottom of the auxiliary groove 35, an auxiliary plate 36 is provided in the middle of the auxiliary groove 35, and an auxiliary hole 37 is provided on the auxiliary plate 36. A lower fixing screw 38 is provided at the lower end of the lower pull belt 32, and the lower end of the lower fixing screw 38 passes downward through the auxiliary hole 37 and is screwed with a lower limit nut 39 that fits the lower surface of the auxiliary plate 36. This fixing The method can not only ensure the stability of the lower pull belt 32 when connecting the water inlet seat 1 and the connecting seat 5, but also facilitate the disassembly and assembly of the lower pull belt 32. The upper outer wall of the water inlet seat 1 is provided with a plurality of lower limit planes 40 which are in contact with the inner wall of the lower pull belt 32. The lower limit planes 40 can effectively limit the flipping or shaking of the lower pull belt 32, so that the lower pull belt 32 can only move up and down, so that the inner wall of the lower pull belt 32 can be tightly pressed against the outer wall of the lower impeller casing 11, effectively avoiding the loosening of the lower pull belt 32 and causing the lower impeller casing 11 to shake, thereby causing the inner wall of the lower impeller casing 11 to contact the lower impeller 10.

[0042] A limiting portion 41 is extended outward from the outer wall of the lower end of the water inlet seat 1, and a supporting foot 42 is extended downward from the outer edge of the limiting portion 41. A plurality of adjusting holes 43 which are in communication with the auxiliary groove 35 are provided on the lower surface of the water inlet seat 1. The existence of the supporting feet 42 can ensure that there is a distance between the lower surface of the water inlet seat 1 and the placement surface when the water pump is stationary, so that the lower fixing screw 38 can pass downward through the adjusting holes 43. The existence of the adjusting holes 43 can provide a new connection position for the lower end of the lower pull belt 32, which can not only slightly adjust the length of the lower pull belt 32, but also ensure that the connection method of the lower end of the lower pull belt 32 remains unchanged.

[0043] The outer cover of the water inlet seat 1 has a filter cover 44, the lower end surface of the filter cover 44 is in contact with the upper surface of the limiting portion 41, and the outer wall of the filter cover 44 is provided with a plurality of filter holes 45 which are connected with the internal space thereof. The outer wall of the lower pull belt 32 is coplanar with the outer peripheral surface of the upper end of the water inlet seat 1, and the outer wall of the lower pull belt 32 and the outer peripheral surface of the upper end of the water inlet seat 1 are both in contact with the inner wall of the filter cover 44. The filter holes 45 of the filter cover 44 can effectively filter the water flowing into the water inlet hole 4 from the outside, and prevent external impurities from entering the lower impeller housing 11 and the upper impeller housing 13, thereby effectively preventing external impurities from being entangled on the lower impeller 10 and the upper impeller 12, causing the lower impeller 10 and the upper impeller 12 to be unable to rotate normally.

[0044] The upper impeller housing 13 and the lower impeller housing 11 are both composed of an upper cover shell 46 and a lower cover shell 47 located directly below the upper cover shell 46. An annular embedded portion 48 is extended downward from the inner edge of the lower end surface of the upper cover shell 46, and an annular locking sleeve 49 is extended upward from the outer edge of the upper end surface of the lower cover shell 47. The locking sleeve 49 is sleeved on the outside of the embedded portion 48, and the upper end surface of the locking sleeve 49 is fitted with the lower end surface of the upper cover shell 46, and the lower end surface of the embedded portion 48 is fitted with the upper end surface of the lower cover shell 47. This combination can divide the upper impeller housing 13 and the lower impeller 10 housing into two, thereby avoiding the situation where the overall impeller housing is difficult to disassemble and assemble, and at the same time is conducive to the disassembly and assembly of the impeller in the impeller housing.

[0045] An annular positioning protrusion 50 is provided on the upper surface of the upper cover shell 46, and an annular sealing flange 51 is extended inward from the inner wall of the lower end port of the lower cover shell 47. The sealing flange 51 of one of the upper impeller shell 13 and the lower impeller shell 11 is sleeved on the outer side of the positioning protrusion 50 of the upper impeller shell 13 and the lower impeller shell 11 located below. The outer edge of the lower surface of the water outlet end cover 14 extends upward to form a positioning ring 52 that is sleeved on the outer side of the positioning protrusion 50 of the upper impeller shell 13 located at the top. This fixing method can effectively ensure the stability between the water outlet end cover 14 and the upper impeller shell 13 located at the top. An annular positioning portion 53 is provided on the upper surface of the water inlet seat 1, which is located at the bottom The sealing flange 51 of the square lower impeller housing 11 is in contact with the upper surface of the water inlet seat 1 and is sleeved on the outside of the positioning portion 53. This fixing method can effectively ensure the stability between the water inlet seat 1 and the lower impeller housing 11 located at the bottom, and the upper end face of the connecting seat 5 is provided with an annular upper limit ring 501, and the sealing flange 51 of the upper impeller housing 13 located at the bottom is sleeved on the outside of the upper limit ring 501, and the lower end face of the connecting seat 5 is provided with a lower limit ring 502 which is sleeved on the outside of the positioning protrusion 50 of the lower impeller housing 11 located at the top. This structural design can effectively ensure the coaxiality of the water inlet seat 1, the lower impeller housing 11, the connecting seat 5, the upper impeller housing 13 and the water outlet end cover 14.

Claims

1. A high-sealing and high-section water pump, comprising a water inlet seat, a motor arranged in the water inlet seat, a rotating shaft is arranged at the upper end of the motor shaft of the motor, and a plurality of water inlet holes are arranged on the outer wall of the water inlet seat which are connected with the internal space thereof, characterized in that: A connecting seat coaxial with the motor is arranged directly above the water inlet seat; a center hole axially penetrating the connecting seat is arranged in the center of the connecting seat; a guide plate is arranged in the center of the center hole; a guide hole is arranged in the center of the guide plate; a guide bearing set outside the rotating shaft is arranged in the guide hole; a plurality of lower impellers evenly distributed in the axial direction are arranged at the lower part of the rotating shaft, and the plurality of lower impellers are located between the connecting seat and the water inlet seat; the outer cover of the lower impeller is provided with a lower impeller shell matching with it; the plurality of lower impeller shells are stacked and fitted with each other; a plurality of lower impellers evenly distributed in the axial direction are arranged at the upper part of the rotating shaft The upper impeller is provided with an upper impeller shell that matches it; the upper impeller shells are stacked and fitted together; a water outlet end cover that matches it is provided on the upper side of the upper impeller shell located at the top, and a water outlet hole that communicates with the internal space of the water outlet end cover is provided at the center of the upper end surface of the water outlet end cover; the water outlet end cover is connected to the connecting seat by a plurality of upper tensioning structures that are evenly distributed on the outer surface of the upper impeller shell in a circumference; the connecting seat is connected to the water inlet seat by a plurality of lower tensioning structures that are evenly distributed on the outer surface of the lower impeller in a circumference.

2. A high-seal and high-node water pump according to claim 1, characterized in that: The upper tensioning structure includes a plurality of upper pull belts uniformly distributed in a circle outside the upper impeller housing; the outer wall of the connecting seat is provided with a plurality of grooves corresponding to the positions of the upper pull belts; a connecting plate is provided in the middle of the groove; a connecting hole is provided on the connecting plate; a threaded sleeve is provided at the lower end of the upper pull belt; the upper end of a fixing screw passes upward through the connecting hole and is screwed into the threaded sleeve, and the head of the fixing screw is in contact with the lower surface of the connecting plate; the upper end of the upper pull belt is fixed to the water outlet end cover; the outer wall of the upper end of the connecting seat is provided with a plurality of middle limit planes in contact with the inner wall of the upper pull belt.

3. A high-seal and high-node-count water pump according to claim 2, characterized in that: The lower outer wall of the water outlet end cover is provided with a plurality of positioning grooves corresponding to the positions of the grooves; the upper outer wall of the water outlet end cover is provided with a ring-shaped positioning step; the positioning step is provided with a plurality of limiting holes that are connected with the positioning groove; an extension arm is extended from the upper end of the upper pull belt toward the inside of the positioning groove, and one end of the extension arm adjacent to the center of the water outlet end cover is inclined upward; a limiting arm matching the limiting hole is extended upward from the end of the extension arm; a positioning piece matching with it is provided in the positioning groove, and the lower surface of the extension arm is in contact with the upper surface of the positioning piece.

4. A high-seal and high-node-count water pump according to claim 3, characterized in that: A locking groove is provided on the lower groove wall of the positioning groove; and a locking portion matching the locking groove is provided on the lower surface of the positioning piece.

5. A high-seal and high-section water pump according to claim 2, characterized in that: The lower tensioning structure includes a plurality of lower pull belts evenly distributed in a circle outside the lower impeller casing; a limit groove is provided on the lower side groove wall of the groove; the upper end of the lower pull belt is bent downward to form a limit hook matching the limit groove; the outer wall of the water inlet seat is provided with a plurality of auxiliary grooves evenly distributed in a circle, and the water inlet hole is provided at the bottom of the auxiliary groove; an auxiliary plate is provided in the middle of the auxiliary groove; an auxiliary hole is provided on the auxiliary plate; a lower fixing screw is provided at the lower end of the lower pull belt; the lower end of the lower fixing screw passes downward through the auxiliary hole and is screwed with a lower limit nut that fits with the lower surface of the auxiliary plate; the outer wall of the upper end of the water inlet seat is provided with a plurality of lower limit planes that fit with the inner wall of the lower pull belt.

6. A high-seal and high-section water pump according to claim 5, characterized in that: A limiting portion is extended outwardly from the outer wall of the lower end of the water inlet seat; a supporting foot is extended downwardly from the outer edge of the limiting portion; and a plurality of adjusting holes which are connected with the auxiliary grooves are arranged on the lower surface of the water inlet seat.

7. A high-seal and high-node-count water pump according to claim 6, characterized in that: The outer cover of the water inlet seat has a filter cover, and the lower end surface of the filter cover is in contact with the upper surface of the limiting part; the outer wall of the filter cover is provided with a plurality of filter holes which are connected with its internal space; the outer wall of the lower pull belt is coplanar with the outer peripheral surface of the upper end of the water inlet seat; the outer wall of the lower pull belt and the outer peripheral surface of the upper end of the water inlet seat are both in contact with the inner wall of the filter cover.

8. A high-seal and high-node-count water pump according to claim 1, characterized in that: The upper impeller shell and the lower impeller shell are both composed of an upper cover shell and a lower cover shell located directly below the upper cover shell; an annular embedded portion is extended downward from the inner edge of the lower end surface of the upper cover shell; an annular locking sleeve is extended upward from the outer edge of the upper end surface of the lower cover shell, and the locking sleeve is sleeved outside the embedded portion; the upper end surface of the locking sleeve is in contact with the lower end surface of the upper cover shell, and the lower end surface of the embedded portion is in contact with the upper end surface of the lower cover shell.

9. A high-seal and high-section water pump according to claim 8, characterized in that: An annular positioning protrusion is provided on the upper surface of the upper cover shell; an annular sealing flange is extended inward from the inner wall of the lower end port of the lower cover shell; the sealing flanges of one of the upper impeller shell and the lower impeller shell are sleeved outside the positioning protrusions of the upper impeller shell and the lower impeller shell located below; a positioning ring is extended upward from the outer edge of the lower surface of the water outlet end cover to be sleeved outside the positioning protrusion of the upper impeller shell located at the top; an annular positioning part is provided on the upper surface of the water inlet seat; the sealing flange of the lower impeller shell located at the bottom is in contact with the upper surface of the water inlet seat and sleeved outside the positioning part.

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