Multi-shaft multi-gear speed increasing water pump

Abstract

The utility model relates to the technical field of water pumps, and particularly discloses a multi-shaft multi-gear speed-increasing water pump, a speed-increasing gear box comprises a box body, a water pump main shaft, a speed-increasing gear set and a power input shaft, the power input shaft is rotatably connected with the box body, a driving gear set is arranged on the power input shaft, and the driving gear set is in meshing transmission with the speed-increasing gear set; the two ends of the speed-increasing gear set are rotationally connected with the box, the speed-increasing gear set is in meshing transmission with a first driven gear on the water pump spindle, the water pump spindle is rotationally connected with the box, and the tail end of the water pump spindle extends into the pump body and drives the pump body to pump water. According to the multi-gear speed-increasing water pump, a plurality of gear combinations with different diameters are arranged, so that multi-gear speed-increasing adjustment of the water pump is realized, a proper gear can be selected according to different water pumping working condition requirements, and the working efficiency and the energy utilization rate of the water pump are improved. The structure of the sliding sleeve and the gear shifting rod is adopted, an operator can conveniently conduct gear shifting operation, a complex mechanical structure is not needed, and the operation difficulty is lowered.

Description

TECHNICAL FIELD

[0001] The utility model relates to water pump technical field, concretely point to a kind of multi-shaft multi-gear speed-up water pump. BACKGROUND

[0002] Water pump as a kind of general machinery, in agricultural irrigation, industrial production, city water supply and many other fields have extensive application.There is often insufficient problem of adjusting capacity when traditional water pump faces different working condition requirements.For example, when needing larger pumping capacity, traditional water pump can not meet the requirements due to insufficient power;And in some occasions where pumping capacity demand is small, traditional water pump can cause energy waste due to too high speed.

[0003] Therefore, a kind of multi-shaft multi-gear speed-up water pump becomes the problem that people urgently need to solve. SUMMARY

[0004] The technical problem to be solved by the utility model is to provide a kind of multi-shaft multi-gear speed-up water pump, by setting up speed-up gear box, the multi-gear speed-up adjustment of water pump is realized, to adapt to different pumping working condition requirements, improve the working efficiency and energy utilization rate of water pump.

[0005] To solve the above technical problem, the technical scheme provided by the utility model is as follows: a kind of multi-shaft multi-gear speed-up water pump, including speed-up gear box and pump body, the speed-up gear box includes box, water pump main shaft, speed-up gear set and power input shaft, the power input shaft is rotatably connected with the box, the power input shaft is equipped with driving gear set, the driving gear set is engaged with speed-up gear set and is driven, the speed-up gear set is rotatably connected with the box at both ends, the speed-up gear set is engaged with the first driven gear on the water pump main shaft and is driven, the water pump main shaft is rotatably connected with the box and the tail end extends to the inside of pump body and drives pump body to pump water.

[0006] Further, the speed-up gear set includes coaxially connected second driven gear and second driving gear, the diameter of the second driven gear is less than the diameter of the second driving gear, and the second driving gear is engaged with the first driven gear and is driven.

[0007] Further, the driving gear set includes first driving gear, and the first driving gear is engaged with the second driven gear and is driven.

[0008] Further, the second driven gear is arranged on the left side of the second driving gear, and the first driving gear is arranged on the left side of the second driving gear and is engaged with the second driven gear and is driven.

[0009] Further, the second driven gear is arranged on the right side of the second driving gear, and the first driving gear is arranged on the right side of the second driving gear and is engaged with the second driven gear and is driven.

[0010] Further, the speed increasing gear set further comprises a third driven gear, the second driven gear and the third driven gear are located on two sides of the second driving gear, the third driven gear has a diameter smaller than that of the second driving gear and different from that of the second driven gear.

[0011] Further, the driving gear set comprises a first driving gear and a second driving gear, the first driving gear and the second driving gear are connected with each other through a sliding sleeve, the power input shaft is a spline shaft, the sliding sleeve is sleeved outside the power input shaft and is in sliding connection with the power input shaft, one side of the second driving gear is provided with a shift lever in rotational connection with the second driving gear, and the first driving gear or the second driving gear is in meshing transmission with the speed increasing gear set.

[0012] Further, the first driving gear is in meshing transmission with the second driven gear or the second driving gear is in meshing transmission with the third driven gear.

[0013] Further, the shift lever comprises a rod body, a handle and a rotating sleeve, one side of the second driving gear is provided with a rotating limiting groove, the rotating sleeve is sleeved outside the rotating limiting groove and is in rotational connection with the rotating limiting groove, one end of the rod body is connected with the rotating sleeve and the other end of the rod body extends to the outside of the box body and is connected with the handle.

[0014] Further, the power input shaft and the power input end of the water pump main shaft both extend to the outside of the box body and are connected with driving components.

[0015] Compared with the prior art, the utility model has the advantages that:

[0016] The utility model discloses a plurality of different diameter gear combination is set up, realized the multi -gear speed increasing regulation of water pump, can select the suitable gear according to different pumping working condition demand, improved the working efficiency and energy utilization rate of water pump.

[0017] The utility model discloses the structure of sliding sleeve and shift lever, and the operator can conveniently carry out the gear shifting operation, and need not complicated mechanical structure, reduced the operation difficulty.

[0018] The utility model discloses the speed increasing gear box and pump body are integrated together, and the compact structure occupies small, convenient installation and use. ACCURACY OF DRAWINGS

[0019] Figure 1 It is the structure schematic of the utility model discloses a kind of multi-shaft multi-gear speed increasing water pump embodiment 1 Figure 1 .

[0020] Figure 2 It is the structure schematic of the utility model discloses a kind of multi-shaft multi-gear speed increasing water pump embodiment 1 Figure 2 .

[0021] Figure 3is the right view of the embodiment 1 of the multi-shaft multi-gear speed increasing water pump.

[0022] Figure 4 is Figure 3 the section view at A-A.

[0023] Figure 5 is the internal structure schematic view of the embodiment 1 of the multi-shaft multi-gear speed increasing water pump.

[0024] Figure 6 is the structure schematic view of the embodiment 2 and 3 of the multi-shaft multi-gear speed increasing water pump Figure 1 .

[0025] Figure 7 is the structure schematic view of the embodiment 2 and 3 of the multi-shaft multi-gear speed increasing water pump Figure 2 .

[0026] Figure 8 is the right view of the embodiment 2 of the multi-shaft multi-gear speed increasing water pump.

[0027] Figure 9 is Figure 8 the section view at B-B.

[0028] Figure 10 is the internal structure schematic view of the embodiment 2 of the multi-shaft multi-gear speed increasing water pump.

[0029] Figure 11 is the right view of the embodiment 3 of the multi-shaft multi-gear speed increasing water pump.

[0030] Figure 12 is Figure 11 the section view at C-C.

[0031] Figure 13 is the internal structure schematic view of the embodiment 3 of the multi-shaft multi-gear speed increasing water pump.

[0032] Figure 14 is Figure 13 the structure enlarged view at D.

[0033] As shown in the figure: 1, the speed increasing gear box, 2, the pump body, 3, the box, 4, the water pump main shaft, 5, the power input shaft, 6, the first driven gear, 7, the second driven gear, 8, the second driving gear, 9, the first driving gear, 10, the third driven gear, 11, the second driving gear, 12, the sliding sleeve, 13, the shift lever, 14, the rod body, 15, the handle, 16, the rotating sleeve, 17, the rotating limit slot, 18, the driving part. DETAILED DESCRIPTION

[0034] In the description of the utility model, it is understood that the terms "upper", "lower", "front", "rear", "left", "right", "inner", "outer", "vertical", "circumferential" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.

[0035] In the description of the utility model, "first feature", "second feature" can include one or more features. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined as "first", "second" can explicitly or implicitly include one or more features.

[0036] In the utility model, unless otherwise specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be broadly understood, for example, it can be fixedly connected, and can also be detachably connected or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or the communication between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific situation.

[0037] The utility model discloses a multi-shaft multi-gear speed increasing water pump makes further detailed description in combination with the drawings.

[0038] In combination with the drawings Figures 1-14 The utility model is introduced in detail.

[0039] A multi-shaft multi-gear speed increasing water pump, including speed increasing gear box 1 and pump body 2. Speed increasing gear box 1 is the core component of the utility model, it includes box 3, water pump main shaft 4, speed increasing gear group and power input shaft 5. Power input shaft 5 is rotationally connected with box 3, for receiving external power input. Driving gear set is arranged on power input shaft 5, and driving gear set and speed increasing gear set are engaged transmission, and the power of power input shaft 5 is transmitted to speed increasing gear set. The both ends of speed increasing gear set are rotationally connected with box 3, and speed increasing gear set and first driven gear 6 on water pump main shaft 4 are engaged transmission, and the power after speed increasing is transmitted to water pump main shaft 4. Water pump main shaft 4 is rotationally connected with box 3 and extends to the inside of pump body 2 and drives pump body 2 to pump water.

[0040] The speed-increasing gear set comprises a second driven gear 7 coaxially connected with a second driving gear 8, the diameter of the second driven gear 7 is smaller than that of the second driving gear 8, and the speed-increasing function is realized by the combination of the gears of different sizes. The second driving gear 8 is in meshing transmission with the first driven gear 6 to transmit power to the water pump shaft 4.

[0041] The driving gear set comprises a first driving gear 9 in meshing transmission with the second driven gear 7 to realize basic power transmission.

[0042] In one embodiment of the present application, the second driven gear 7 is arranged on the left side of the second driving gear 8, and the first driving gear 9 is arranged on the left side of the second driving gear 8 and in meshing transmission with the second driven gear 7.

[0043] In another embodiment of the present application, the second driven gear 7 is arranged on the right side of the second driving gear 8, and the first driving gear 9 is arranged on the right side of the second driving gear 8 and in meshing transmission with the second driven gear 7. In this embodiment, the power input shaft 5 can be a spline shaft, the first driving gear 9 is sleeved on the outside of the power input shaft 5 through the sliding sleeve 12 and is in sliding connection with the power input shaft 5, a shift lever 13 is arranged on one side of the first driving gear 9 and is in rotational connection with the first driving gear 9, so as to facilitate the operator to perform gear shifting operation.

[0044] In another embodiment of the present application, the speed-increasing gear set further comprises a third driven gear 10, the second driven gear 7 and the third driven gear 10 are arranged on the two sides of the second driving gear 8, the diameter of the third driven gear 10 is smaller than that of the second driving gear 8 and is different from that of the second driven gear 7, so as to provide more speed-increasing options.

[0045] When the speed-increasing gear set is provided with the third driven gear 10, the driving gear set comprises a first driving gear 9 and a second driving gear 11, the first driving gear 9 and the second driving gear 11 are connected with each other through the sliding sleeve 12, the power input shaft 5 is a spline shaft, and the sliding sleeve 12 is sleeved on the outside of the power input shaft 5 and is in sliding connection with the power input shaft 5. By sliding the sliding sleeve 12, the first driving gear 9 or the second driving gear 11 can be selected to be in meshing transmission with the speed-increasing gear set, so as to realize different speed-increasing gears. A shift lever 13 is arranged on one side of the second driving gear 11 and is in rotational connection with the second driving gear 11, so as to facilitate the operator to perform gear shifting operation.

[0046] The shift lever 13 comprises a lever body 14, a handle 15 and a rotating sleeve 16, one side of the second driving gear 11 is provided with a rotating limiting groove 17, the rotating sleeve 16 is sleeved on the outside of the rotating limiting groove 17 and is in rotational connection with the rotating limiting groove 17, one end of the lever body 14 is connected with the rotating sleeve 16 and the other end extends to the outside of the box body 3 and is connected with the handle 15. The operator can conveniently operate the shift lever 13 through the handle 15 to drive the sliding sleeve 12 to slide and realize gear shifting function.

[0047] The power input shaft 5 and the power input end of the water pump main shaft 4 are both extended to the outside of the box body 3 and are connected with a driving part 18, the power input shaft 5 receives the input of an external power source (such as a motor), and the water pump main shaft 4 transmits power to the pump body 2 to pump water.

[0048] The specific implementation process of the multi-shaft multi-gear speed-increasing water pump is as follows:

[0049] Example 1: left block single-tooth water pump

[0050] A multi-shaft multi-gear speed-increasing water pump, comprising a speed-increasing gear box 1 and a pump body 2. The speed-increasing gear box 1 is the core component of the utility model, which comprises a box body 3, a water pump main shaft 4, a speed-increasing gear set and a power input shaft 5. The power input shaft 5 is rotatably connected with the box body 3 and is used for receiving external power input. The power input shaft 5 is provided with a driving gear set, the driving gear set is in meshing transmission with the speed-increasing gear set, and the power of the power input shaft 5 is transmitted to the speed-increasing gear set. The speed-increasing gear set is rotatably connected with the box body 3 at both ends, the speed-increasing gear set is in meshing transmission with the first driven gear 6 on the water pump main shaft 4, and the speed-increasing power is transmitted to the water pump main shaft 4. The water pump main shaft 4 is rotatably connected with the box body 3 and extends to the inside of the pump body 2 at the tail end and drives the pump body 2 to pump water.

[0051] The speed-increasing gear set comprises a second driven gear 7 and a second driving gear 8 which are coaxially connected, the diameter of the second driven gear 7 is smaller than that of the second driving gear 8, and the speed-increasing function is realized through the combination of gears of different sizes. The second driving gear 8 is in meshing transmission with the first driven gear 6 and transmits power to the water pump main shaft 4.

[0052] The driving gear set comprises a first driving gear 9, the first driving gear 9 is in meshing transmission with the second driven gear 7 and realizes basic power transmission; the second driven gear 7 is arranged on the left side of the second driving gear 8, and the first driving gear 9 is on the left side of the second driving gear 8 and is in meshing transmission with the second driven gear 7.

[0053] The power input shaft 5 and the power input end of the water pump main shaft 4 are both extended to the outside of the box body 3 and are connected with a driving part 18, the driving part 18 can be a belt pulley, an external power source is connected through a belt, the power input shaft 5 receives the input of an external power source (such as a motor), and the water pump main shaft 4 transmits power to the pump body 2 to pump water.

[0054] Example 2: right block single-tooth water pump

[0055] The utility model provides a kind of multi-shaft multi-gear speed-increasing water pump, including speed-increasing gear box 1 and pump body 2.Speed-increasing gear box 1 is the core component of the utility model, it includes box 3, water pump main shaft 4, speed-increasing gear set and power input shaft 5.Power input shaft 5 is rotatably connected with box 3, for receiving external power input.Power input shaft 5 is equipped with driving gear set, and driving gear set is engaged transmission with speed-increasing gear set, and the power of power input shaft 5 is transmitted to speed-increasing gear set.Speed-increasing gear set is rotatably connected with box 3 at both ends, and speed-increasing gear set is engaged transmission with the first driven gear 6 on water pump main shaft 4, and the power after speed-increasing is transmitted to water pump main shaft 4.Water pump main shaft 4 is rotatably connected with box 3 and extends to the inside of pump body 2 and drives pump body 2 to pump water.

[0056] Speed-increasing gear set includes coaxially connected second driven gear 7 and second driving gear 8, and the diameter of second driven gear 7 is less than the diameter of second driving gear 8, and the combination of gear of this size realizes speed-increasing function.Second driving gear 8 is engaged transmission with first driven gear 6, and the power is transmitted to water pump main shaft 4.

[0057] Driving gear set includes first driving gear 9, and first driving gear 9 is engaged transmission with second driven gear 7, and realizes basic power transmission;Second driven gear 7 is arranged at the right side of second driving gear 8, and first driving gear 9 is at the right side of second driving gear 8 and is engaged transmission with second driven gear 7.

[0058] Power input shaft 5 can be spline shaft, and first driving gear 9 is sleeved on the outside of power input shaft 5 through sliding sleeve 12 and is slidably connected with sliding sleeve 12, and one side of first driving gear 9 is provided with shift lever 13 rotatably connected therewith, to facilitate the shift operation of operator.

[0059] Shift lever 13 includes rod body 14, handle 15 and rotating sleeve 16, one side of first driving gear 9 is provided with rotating limiting groove 17, rotating sleeve 16 is sleeved on the outside of rotating limiting groove 17 and is rotatably connected therewith, one end of rod body 14 is connected with rotating sleeve 16, and the other end extends to the outside of box 3 and is connected with handle 15.Operators can conveniently operate shift lever 13 through handle 15, drive sliding sleeve 12 to slide, and realize the shift function.

[0060] Power input shaft 5 and the power input end of water pump main shaft 4 all extend to the outside of box 3 and are connected with driving part 18, and the driving part 18 can be belt pulley, and external power source is connected through belt, and power input shaft 5 receives the input of external power source (such as motor etc.), and water pump main shaft 4 transmits power to pump body 2 to pump water.

[0061] The user can pull the shift lever 13 to disengage the first drive gear 9 from the second driven gear 7, at this time, the driving part 18 at the end of the water pump main shaft 4 is selected as the external power source to drive the water pump to run, at this time, it is used as a conventional water pump, and speed increasing cannot be realized; when the user pushes the shift lever 13 to engage the first drive gear 9 with the second driven gear 7, the driving part 18 at the end of the power input shaft 5 is selected as the external power source to drive the water pump to run, at this time, speed increasing can be realized through the speed increasing gear set.

[0062] Embodiment 3: double-gear three-shaft water pump

[0063] A multi-shaft multi-gear speed increasing water pump comprises a speed increasing gear box 1 and a pump body 2. The speed increasing gear box 1 is the core component of the utility model, which comprises a box body 3, a water pump main shaft 4, a speed increasing gear set and a power input shaft 5. The power input shaft 5 is rotatably connected with the box body 3 and is used for receiving external power input. The power input shaft 5 is provided with a driving gear set, the driving gear set is engaged with the speed increasing gear set for transmission, and the power of the power input shaft 5 is transmitted to the speed increasing gear set. The two ends of the speed increasing gear set are rotatably connected with the box body 3, the speed increasing gear set is engaged with a first driven gear 6 on the water pump main shaft 4 for transmission, and the speed-increased power is transmitted to the water pump main shaft 4. The water pump main shaft 4 is rotatably connected with the box body 3 and extends to the inside of the pump body 2 at the end and drives the pump body 2 to pump water.

[0064] The speed increasing gear set comprises coaxially connected second driven gear 7, second driving gear 8 and third driven gear 10, the diameters of the second driven gear 7 and the third driven gear 10 are both smaller than the diameter of the second driving gear 8, and the diameters of the second driven gear 7 and the third driven gear 10 are different, and the combination of gears of different sizes realizes different speed increasing functions. The second driving gear 8 is engaged with the first driven gear 6 for transmission, and the power is transmitted to the water pump main shaft 4.

[0065] The driving gear set comprises first driving gear 9 and second driving gear 11, the first driving gear 9 and the second driving gear 11 are connected with each other through a sliding sleeve 12, the power input shaft 5 is a spline shaft, the sliding sleeve 12 is sleeved on the outside of the power input shaft 5 and is slidably connected with the power input shaft 5. By sliding the sliding sleeve 12, the first driving gear 9 or the second driving gear 11 can be selected to be engaged with the speed increasing gear set for transmission, so that different speed increasing gears are realized. The second driving gear 11 is provided with a shift lever 13 rotatably connected with one side of the second driving gear 11, which facilitates the shift operation of the operator.

[0066] The shift lever 13 comprises a lever body 14, a handle 15 and a rotating sleeve 16, the second driving gear 11 is provided with a rotating limiting groove 17 rotatably connected with one side of the second driving gear 11, the rotating sleeve 16 is sleeved on the outside of the rotating limiting groove 17 and is rotatably connected with the rotating limiting groove 17, one end of the lever body 14 is connected with the rotating sleeve 16 and the other end extends to the outside of the box body 3 and is connected with the handle 15. The operator can conveniently operate the shift lever 13 through the handle 15, drive the sliding sleeve 12 to slide and realize the shift function.

[0067] The second driven gear 7 is arranged at the left side of the second driving gear 8, and the first driving gear 9 is arranged at the left side of the second driving gear 8 and is engaged with the second driven gear 7.

[0068] The third driven gear 10 is arranged at the right side of the second driving gear 8, and the second driving gear 11 is arranged at the right side of the second driving gear 8 and is engaged with the third driven gear 10.

[0069] The power input shaft 5 and the power input end of the water pump main shaft 4 are extended to the outside of the box 3 and are connected with the driving part 18, which can be a belt pulley, and an external power source is connected through a belt, the power input shaft 5 receives the input of the external power source (such as a motor), and the water pump main shaft 4 transmits power to the pump body 2 to pump water.

[0070] In this embodiment, by pulling the shift lever 13, the first driving gear 9 is disengaged from the second driven gear 7, and the second driving gear 11 is disengaged from the third driven gear 10, at this time, it is neutral, and the driving part 18 on the water pump main shaft 4 is connected with the external power source to drive the water pump to run.

[0071] The shift lever 13 can also be pulled to engage the first driving gear 9 with the second driven gear 7, and the second driving gear 11 is disengaged from the third driven gear 10, at this time, it is one gear, and the driving part 18 on the power input shaft 5 is connected with the external power source to drive the water pump to run.

[0072] The shift lever 13 can also be pulled to engage the second driving gear 11 with the third driven gear 10, and the first driving gear 9 is disengaged from the second driven gear 7, at this time, it is two gears, and the driving part 18 on the power input shaft 5 is connected with the external power source to drive the water pump to run.

[0073] The above three gears realize different speed regulation, among which the neutral gear is the normal speed, the one gear is the first speed increase, and the two gears are the second speed increase.

[0074] On the basis of the above three embodiments, the gear box and the speed-increased water pump structure for increasing more gears to increase the speed are also within the protection scope of the present application.

[0075] The above describes the present application and its embodiments, which are not limited, and the embodiment shown in the drawings is only one of the embodiments of the present application, and the actual structure is not limited thereto. In general, if a person skilled in the art is inspired by it, without departing from the creative purpose of the present application, similar structural modes and embodiments are not creatively designed, which should belong to the protection scope of the present application.

Claims

1. A multi-shaft multi-gear step-up water pump, characterized in that: The application relates to a speed-increasing gearbox (1) and a pump body (2), wherein the speed-increasing gearbox (1) comprises a gearbox body (3), a water pump main shaft (4), a speed-increasing gear set and a power input shaft (5), the power input shaft (5) is rotationally connected with the gearbox body (3), a driving gear set is arranged on the power input shaft (5), the driving gear set is in meshing transmission with the speed-increasing gear set, the two ends of the speed-increasing gear set are rotationally connected with the gearbox body (3), the speed-increasing gear set is in meshing transmission with a first driven gear (6) on the water pump main shaft (4), the water pump main shaft (4) is rotationally connected with the gearbox body (3) and extends to the inside of the pump body (2) and drives the pump body (2) to pump water.

2. A multi-shaft multi-gear step-up water pump according to claim 1, characterized in that: The speed-increasing gear set comprises a second driven gear (7) and a second driving gear (8) which are coaxially connected, the diameter of the second driven gear (7) is smaller than that of the second driving gear (8), and the second driving gear (8) is in meshing transmission with the first driven gear (6).

3. A multi-shaft multi-gear step-up water pump according to claim 2, characterized in that: The driving gear set comprises a first driving gear (9) which is in meshing transmission with the second driven gear (7).

4. A multi-shaft multi-gear step-up water pump according to claim 3, characterized in that: The second driven gear (7) is arranged on the left side of the second driving gear (8), and the first driving gear (9) is arranged on the left side of the second driving gear (8) and is in meshing transmission with the second driven gear (7).

5. A multi-shaft multi-gear step-up water pump according to claim 3, characterized in that: The second driven gear (7) is arranged on the right side of the second driving gear (8), and the first driving gear (9) is arranged on the right side of the second driving gear (8) and is in meshing transmission with the second driven gear (7).

6. A multi-shaft multi-gear step-up water pump according to claim 2, characterized in that: The speed-increasing gear set further comprises a third driven gear (10), the second driven gear (7) and the third driven gear (10) are arranged on the two sides of the second driving gear (8) respectively, the diameter of the third driven gear (10) is smaller than that of the second driving gear (8) and is different from that of the second driven gear (7).

7. A multi-shaft multi-gear step-up water pump according to claim 6, characterized in that: The driving gear set comprises the first driving gear (9) and a second driving gear (11), the first driving gear (9) and the second driving gear (11) are connected with each other through a sliding sleeve (12), the power input shaft (5) is a spline shaft, the sliding sleeve (12) is sleeved on the outside of the power input shaft (5) and is in sliding connection with the power input shaft (5), one side of the second driving gear (11) is provided with a shift lever (13) which is rotationally connected with the second driving gear (11), and the first driving gear (9) or the second driving gear (11) is in meshing transmission with the speed-increasing gear set.

8. A multi-shaft multi-gear step-up water pump according to claim 7, characterized in that: The first driving gear (9) is in meshing transmission with the second driven gear (7) or the second driving gear (11) is in meshing transmission with the third driven gear (10).

9. A multi-shaft multi-gear step-up water pump according to claim 8, characterized in that: The shift lever (13) comprises a lever body (14), a handle (15) and a rotating sleeve (16), one side of the second driving gear (11) is provided with a rotating limiting groove (17), the rotating sleeve (16) is sleeved on the outside of the rotating limiting groove (17) and is rotationally connected with the rotating limiting groove (17), one end of the lever body (14) is connected with the rotating sleeve (16) and the other end extends to the outside of the gearbox body (3) and is connected with the handle (15).

10. A multi-shaft multi-stage speed increasing water pump according to any one of claims 1-9, characterized in that: The power input shaft (5) and the power input end of the water pump main shaft (4) both extend to the outside of the gearbox body (3) and are connected with a driving part (18).

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