Vertical energy-saving water pump

Abstract

The invention relates to the technical field of water pumps, in particular to a vertical energy-saving water pump, which solves the problem that the use power of the existing multi-stage vertical water pump cannot be controlled by controlling the number of impellers, and comprises an upper pump shell, a lower pump shell, a shaft sleeve and an impeller group, the two supporting pump shafts are sleeved with shaft sleeves and impeller sets in an up-down movable mode respectively, a power shaft rotates in the upper end of the upper pump shell, a center connecting shaft rotates between the lower pump shell and the upper pump shell, the lower pump shell rotates around the center connecting shaft, and a stirring assembly driving the shaft sleeves on the supporting pump shafts and the impeller sets to move up and down is installed at the upper end of the center connecting shaft. The number of the impeller sets and the number of the shaft sleeves on the center pump shaft can be changed, the power is larger when the number of the impeller sets is larger, the power is smaller when the number of the impeller sets is smaller and the number of the shaft sleeves is larger, and therefore the use power can be controlled by controlling the number of the impeller sets.

Description

Technical Field

[0001] The invention relates to the technical field of water pumps, and in particular to a vertical energy-saving water pump. Background Art

[0002] A vertical water pump is a type of water pump. Its characteristic is that the pump body is installed vertically. It usually transports liquid from bottom to top. The main structure of a multi-stage vertical water pump includes an outer pump body, an inner pump casing, an impeller, a shaft, a motor, etc. The inner pump casing is fixed in the outer pump body, and the motor is fixed to the upper end of the outer pump body. The motor is fixed to the shaft through a coupling. The shaft rotates and penetrates into the inner pump casing, where the impeller is fixed. During operation, the motor drives the shaft to rotate through the coupling, and the shaft drives the impeller to rotate. After water enters the outer pump body from the water inlet of the outer pump body, it passes through the space between the outer pump body and the inner pump casing, and the space between the inner pump casing and the impeller in turn, and then is discharged from the water outlet of the outer pump body.

[0003] However, the existing vertical water pumps have some defects, such as:

[0004] Since the number of impellers is fixed, all the impellers need to rotate when the motor drives the shaft and impellers to rotate, so the current and power are determined. It is found during use that when selecting vertical water pumps in thermal power plants and chemical plants, they are often selected according to the maximum power of the water pump and used at the maximum power. However, in daily use, most of the time the water pump is not required to reach the maximum power, which leads to a waste of electricity resources. Therefore, the existing multi-stage vertical water pumps cannot control the power usage by controlling the number of impellers.

[0005] Therefore, the present invention provides a vertical energy-saving water pump to solve the above problems. Summary of the invention

[0006] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a vertical energy-saving water pump to solve the problem that the existing multi-stage vertical water pump cannot control the power usage by controlling the number of impellers.

[0007] In order to achieve the above object, the technical solution adopted by the present invention is:

[0008] A vertical energy-saving water pump comprises an upper pump casing, a lower pump casing, a shaft sleeve and an impeller assembly;

[0009] Two supporting pump shafts are fixed to the upper end of the upper pump housing, and shaft sleeves and impeller groups are respectively sleeved on the two supporting pump shafts, and a power shaft rotates in the upper end of the upper pump housing;

[0010] A central connecting shaft rotates between the lower pump casing and the upper pump casing, and the lower pump casing rotates around the central connecting shaft. The upper end of the central connecting shaft is equipped with a toggle assembly that drives the sleeve and the impeller group on the supporting pump shaft to move up and down;

[0011] A central pump shaft rotates in the lower pump casing. When the lower pump casing rotates forward and reversely around the central connecting shaft, the central pump shaft is aligned with two supporting pump shafts respectively. The central pump shaft is fixedly connected to the power shaft through a connecting kit. A number of impeller groups and a number of shaft sleeves are movably sleeved on the outside of the central pump shaft from bottom to top. The uppermost shaft sleeve is connected to the water outlet pipe on the side of the lower pump casing.

[0012] Preferably, the toggle assembly includes a baffle rod, a lifting screw, a first limiting rod, a lever, an external sleeve, a second spring positioning column and an internal threaded sleeve for lifting. The lifting screw is fixed to the upper end of the central connecting shaft, the lifting screw is located in the upper pump housing, the upper end thread of the lifting screw passes through the internal threaded sleeve for lifting, a first limiting rod is fixed to the inner lower side of the upper pump housing, the first limiting rod moves up and down through the internal threaded sleeve for lifting, the external sleeve of the internal threaded sleeve for lifting is rotatably sleeved, a lever is fixed to the side of the external sleeve, a second spring positioning column is installed between the internal threaded sleeve for lifting and the external sleeve, the second spring positioning column fixes the internal threaded sleeve for lifting and the external sleeve together, two baffle rods are fixed to the upper end of the lower pump housing, and the lever is located between the two baffle rods.

[0013] Preferably, two one-way rotating brackets are installed in the lower end of the upper pump housing, and the two one-way rotating brackets respectively support an impeller assembly outside a supporting pump shaft and a shaft sleeve outside another supporting pump shaft;

[0014] The one-way rotating support includes a triangular support plate, a first spring, a pressure plate and a top plate. The pressure plate is horizontally movable and inserted into the inner lower end of the upper pump shell. The first spring is fixed between the pressure plate and the inner lower end of the upper pump shell. The triangular support plate rotates in the lower end of the upper pump shell through a rotating shaft. One end of the triangular support plate is pressed against the lower side of the pressure plate. The top plate is fixed between the lower ends of the two baffle rods. When the top plate rotates with the baffle rod, the pressure plate is pushed away from the top of the triangular support plate.

[0015] Preferably, the connection kit includes a sleeve, a first spring positioning column, a slot and a sealing disk. The sleeve is movably sleeved up and down between the power shaft and the central pump shaft. The lower end of the sleeve is rotatably sleeved with a sealing disk. The diameter of the sealing disk is equal to the inner diameter of the lower pump casing. The lower end of the sleeve has a slot in a circular array. The first spring positioning columns are fixed in the lower end of the power shaft and the upper end of the central pump shaft, and the column end of one of the first spring positioning columns is movably inserted into the slot.

[0016] Preferably, the upper end of the uppermost sleeve of the central pump shaft is fixed to the water inlet of the connecting pipe, the water outlet of the connecting pipe is inclined downward, and one end of the outlet pipe is inclined upward, so that after the connecting pipe moves downward, its water outlet connects with the outlet pipe, and the other end of the outlet pipe passes through the lower pump casing, and the connecting pipe is fixed on the lower side of the sealing disk.

[0017] Preferably, a power assembly and a snap-in kit are installed in the lower end of the lower pump casing, and the output end of the power assembly is installed at the lower end of the lowest impeller group on the central pump shaft through the snap-in kit, and the power assembly drives the impeller group on the central pump shaft to move up and down.

[0018] Preferably, the clamping kit includes a bottom tube, a rotating sleeve, a top sleeve and a fixed sleeve. The bottom tube rotates inside the lower end of the lower pump casing, and the upper end of the bottom tube is upwardly sleeved outside the lower end of the lowest impeller group. A top sleeve is fixed inside the bottom tube, and a rotating sleeve and a fixed sleeve are respectively rotated at the upper and lower ends of the top sleeve. Both the rotating sleeve and the fixed sleeve are rotated and sleeved outside the central pump shaft, and the upper end of the rotating sleeve is pressed against the lower end of the lowest impeller group, and the fixed sleeve is fixed to the output end of the power assembly.

[0019] Preferably, a bracket is fixed to the lower end of the lower pump housing;

[0020] The power assembly includes a bottom coupling, a second limiting rod and a threaded barrel. The bottom coupling rotates through the bracket. The second limiting rod is fixed to the circular array at the upper end of the bottom coupling. The second limiting rod moves up and down through the threaded barrel. The threaded barrel threads through the center of the lower pump shell. The upper end of the threaded barrel is fixed to the lower end of the fixed sleeve. The central pump shaft is located in the threaded barrel and the lower end rotates on the upper end of the bottom coupling.

[0021] The beneficial effects of the present invention are:

[0022] 1. The power shaft drives the central pump shaft to rotate through the connection kit, and the central pump shaft drives the impeller group to rotate. When the impeller group rotates, water is pumped to achieve the conventional water pumping function;

[0023] 2. When the power needs to be reduced, the impeller group can be sleeved upward on the supporting pump shaft and left idle, and the sleeve on the other supporting pump shaft can be sleeved on the central pump shaft, so that some impeller groups on the central pump shaft can be replaced with sleeves, so that the central pump shaft drives a smaller number of impeller groups to rotate. When the sleeve rotates, water is not pumped, so that the power required for the central pump shaft to rotate is smaller, that is, the power required for the power shaft is smaller, which is more energy-saving;

[0024] 3. When the lower pump casing rotates forward and reversely around the central connecting shaft, the central pump shaft is aligned with the two supporting pump shafts respectively. When the central pump shaft is aligned with one of the supporting pump shafts, the sleeve can be pushed from the central pump shaft to the supporting pump shaft, or from the supporting pump shaft to the central pump shaft. When the central pump shaft is aligned with the other supporting pump shaft, the impeller group can be pushed from the central pump shaft to the supporting pump shaft, or from the supporting pump shaft to the central pump shaft. In this way, the impeller group and the sleeve can be replaced inside the device, and the replacement is more convenient.

[0025] 4. The output end of the power component drives the impeller group and the shaft sleeve on the central pump shaft to move upward through the clamping kit, so that the impeller group and the shaft sleeve are upwardly sleeved onto the designated supporting pump shaft. The toggle assembly can control the impeller group and the shaft sleeve on the supporting pump shaft to be downwardly sleeved onto the central pump shaft, thereby controlling the up and down movement of the impeller group and the shaft sleeve, and thus controlling the displacement of the impeller group and the shaft sleeve. When the impeller group and the shaft sleeve on the central pump shaft move upward, the connecting kit can be driven to move upward to disengage from the central pump shaft, so that the power shaft and the central pump shaft are disengaged, which facilitates the rotation of the lower pump casing. The toggle assembly can drive the connecting kit downward to be sleeved onto the central pump shaft, so that the power shaft and the central pump shaft are connected, and power transmission continues.

[0026] In summary, this device can replace the number of impeller groups and the number of sleeves on the central pump shaft. When the number of impeller groups is more, the power is greater, and when the number of impeller groups is less and the number of sleeves is more, the power is lower. In this way, the power usage can be controlled by controlling the number of impeller groups. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a three-dimensional schematic diagram of the present invention.

[0028] Figure 2 It is a three-dimensional schematic diagram of the interior of the upper pump shell after the upper pump shell in the present invention is cut.

[0029] Figure 3 It is a top view schematic diagram of the present invention.

[0030] Figure 4 for Figure 3 Schematic diagram of the cross-sectional structure at AA.

[0031] Figure 5 for Figure 3 Schematic diagram of the cross-sectional structure at BB.

[0032] Figure 6 for Figure 5 A partial enlarged schematic diagram of part C of FIG.

[0033] Figure 7 for Figure 5 A partial enlarged schematic diagram of part D of FIG.

[0034] Figure 8 for Figure 5 A partial enlarged schematic diagram of part E of FIG.

[0035] Fig. 9 for Figure 5 A partial enlarged schematic diagram of part F of FIG.

[0036] Fig.10 for Figure 5 A partial enlarged schematic diagram of part G.

[0037] Fig.11It is a side view schematic diagram of the present invention.

[0038] Fig.12 for Fig.11 Schematic diagram of the cross-sectional structure at HH.

[0039] Fig.13 This is a first-perspective stereoscopic view of the shaft sleeve of the component in the present invention.

[0040] Fig.14 This is a second perspective stereoscopic view of the shaft sleeve of the component in the present invention.

[0041] Fig.15 This is a first-view stereoscopic view of the impeller assembly of the present invention.

[0042] Fig.16 This is a second perspective stereoscopic view of the impeller assembly of the present invention.

[0043] Fig.17 It is a schematic diagram of the installation method of the triangular support plate in the present invention.

[0044] In the figure: 1, upper pump housing; 2, sealing plate; 3, lower pump housing; 4, water inlet pipe; 5, bracket; 6, central coupling; 7, supporting pump shaft; 8, one-way rotating bracket; 801, triangular bracket; 802, first spring; 803, pressure plate; 804, top plate; 9, observation window; 10, connecting kit; 1001, sleeve; 1002, first spring positioning column; 1003, slot; 1004, sealing disk; 11, stop rod; 12, lifting screw; 13, first limit rod; 14, power shaft; 15, power assembly; 1501, bottom coupling; 1502, second limit rod; 1503, threaded barrel; 16, water outlet pipe; 17, connecting pipe ;18. Bushing;1801. Inner sleeve;1802. First groove;1803. First inner tube;1804. First clamping block;19. Impeller assembly;1901. Second inner tube;1902. Second clamping block;1903. Impeller body;1904. Second groove;20. Center pump shaft;21. Snap-fit ​​kit;2101. Bottom tube;2102. Rotating sleeve;2103. Top sleeve;2104. Fixed sleeve;22. Push rod;23. External clamping sleeve;24. Second spring positioning column;25. Internal threaded sleeve for lifting;26. External threaded sleeve for fixing;27. Transmission assembly;2701. First cylindrical gear;2702. Second cylindrical gear. DETAILED DESCRIPTION

[0045] The following will refer to the attached Figures 1 to 17 The embodiments of the present invention are described in detail. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0046] As attached Figure 1 -Attached Fig.17 As shown, a vertical energy-saving water pump includes an upper pump casing 1, a lower pump casing 3, a shaft sleeve 18 and an impeller assembly 19;

[0047] Upper pump housing 1: See attached Figure 5 and attached Fig.12 , two storage chambers and a central chamber are arranged in the upper pump casing 1, and the two storage chambers and the central chamber are connected to each other, the two storage chambers are respectively a sleeve storage chamber and an impeller group storage chamber, the lower ends of the central chamber, the sleeve storage chamber and the impeller group storage chamber are all open structures, the tops of the sleeve storage chamber and the impeller group storage chamber are fixed with a supporting pump shaft 7, sleeves 18 are arranged in an upper and lower array in the sleeve storage chamber, the sleeves 18 can be discharged downward from the lower end of the sleeve storage chamber, the supporting pump shaft 7 moves up and down through the sleeve 18, and an impeller group 19 is arranged in an upper and lower array in the impeller group storage chamber, the impeller group 19 can be discharged downward from the lower end of the impeller group storage chamber, and the supporting pump shaft 7 moves up and down through the impeller group 19;

[0048] Participate in the Figure 2 and attached Fig.12 A one-way rotating bracket 8 is installed at the lower end of the sleeve storage chamber and the impeller group storage chamber. The one-way rotating bracket 8 in the impeller group storage chamber supports the impeller group 19, and the one-way rotating bracket 8 in the sleeve storage chamber supports the sleeve 18. Observation windows 9 are provided on the sides of the sleeve storage chamber and the impeller group storage chamber to observe the number of sleeves 18 in the sleeve storage chamber and the number of impeller groups 19 in the impeller group storage chamber. See the attached Figure 5 A power shaft 14 rotates in the upper end of the central cavity, and the power shaft 14 is connected to an external motor through a transmission belt;

[0049] Lower pump housing 3: See attached Figure 1 , Attachment Figure 5 and attached Figure 7 The lower pump casing 3 is located directly below the upper pump casing 1. A central connecting shaft 6 rotates between the lower pump casing 3 and the upper pump casing 1, and the lower pump casing 3 rotates around the central connecting shaft 6. A sealing plate 2 is fixed to the lower side of the lower pump casing 3, and the sealing plate 2 covers the lower ends of the shaft sleeve storage chamber and the impeller assembly storage chamber;

[0050] See attached Figure 2 , Attachment Figure 5 , Attachment Figure 7 , Attachment Figure 8 and attached Fig.12The upper end of the central connecting shaft 6 is installed with a toggle assembly for driving the shaft sleeve 18 and the impeller group 19 on the supporting pump shaft 7 to move up and down. The toggle assembly includes a stop rod 11, a lifting screw 12, a first limiting rod 13, a toggle rod 22, an outer sleeve 23, a second spring positioning column 24 and a lifting internal thread sleeve 25. The upper end of the central connecting shaft 6 is fixed with a lifting screw 12, and the lifting screw 12 is located in the upper pump housing 1. The upper end of the lifting screw 12 is threaded through the lifting internal thread sleeve 25. The first limiting rod 13 is fixed to the lower side of the inner part of the upper pump housing 1. The first limiting rod 13 moves up and down through The lifting internal thread sleeve 25 allows the lifting internal thread sleeve 25 to only move up and down. The lifting internal thread sleeve 25 is rotated externally with an external sleeve 23. A lever 22 is fixed on the side of the external sleeve 23. Three second spring positioning columns 24 are installed between the lifting internal thread sleeve 25 and the external sleeve 23. When the lever 22 points to the central cavity, the sleeve storage cavity and the impeller group storage cavity respectively, the second spring positioning columns 24 fix the lifting internal thread sleeve 25 and the external sleeve 23 together. Two stop rods 11 are fixed at the upper end of the lower pump housing 3, and the lever 22 is located between the two stop rods 11;

[0051] See attached Figure 5 and attached Fig.10 A central pump shaft 20 rotates in the lower pump housing 3. The central pump shaft 20 is located directly below the power shaft 14 and is fixedly connected to the power shaft 14 through a connecting kit 10. A plurality of impeller groups 19 are movable in upper and lower sleeves at the lower end of the central pump shaft 20. A plurality of shaft sleeves 18 are movable in upper and lower sleeves at the upper end of the central pump shaft 20. The uppermost impeller group 19 is connected to the lowermost shaft sleeve 18 in upper and lower sleeves;

[0052] See attached Figure 4 The upper end of the uppermost shaft sleeve 18 is fixed to the water inlet of the connecting pipe 17, the water outlet of the connecting pipe 17 is inclined downward, and one end of the outlet pipe 16 is inclined upward, so that after the connecting pipe 17 moves downward, its water outlet docks with the outlet pipe 16, and the other end of the outlet pipe 16 passes through the lower pump housing 3. The connecting pipe 17 is fixed to the lower end of the connecting kit 10, and the side of the lower pump housing 3 also passes through the water inlet pipe 4, and the height of the water inlet pipe 4 is lower than the height of the outlet pipe 16;

[0053] See attached Figure 5 and attached Fig.10 A power assembly 15 and a clamping kit 21 are installed in the lower end of the lower pump housing 3. The output end of the power assembly 15 is installed at the lower end of the lowest impeller assembly 19 through the clamping kit 21. The power assembly 15 drives the lowest impeller assembly 19 to move up and down. A transmission assembly 27 is installed between the power assembly 15 and the central connecting shaft 6. The power assembly 15 drives the central connecting shaft 6 to rotate through the transmission assembly 27.

[0054] Attach Figure 5As shown in the figure, the lower end of the lower pump housing 3 is fixed with a bracket 5 by a screw, the bracket 5, the lower pump housing 3 and the left half of the upper pump housing 1 are fixed together by a screw, the bracket 5 and the right half of the lower pump housing 3 are both fixed with a fixing external thread sleeve 26 by a nut thread, and the central shaft 6 rotates between the two fixing external thread sleeves 26;

[0055] The working mode of the toggle assembly is as follows: when the center connecting shaft 6 rotates, the lifting screw 12 is driven to rotate. Restricted by the first limit rod 13, the lifting screw 12 drives the lifting internal threaded sleeve 25 to move up and down, and the lifting internal threaded sleeve 25 drives the outer sleeve 23 and the toggle rod 22 to move up and down. When the lower pump casing 3 is rotated, the toggle rod 22 is driven to rotate through the blocking rod 11. When the lower pump casing 3 rotates to the bottom of the central cavity, the toggle rod 22 faces the inside of the central cavity. When the toggle rod 22 moves down, it pushes the connecting kit 10 downward. When the lower pump casing 3 rotates to the bottom of the impeller group storage chamber, the toggle rod 22 faces the inside of the impeller group storage chamber. When the toggle rod 22 moves down, it pushes the impeller group 19 downward. When the lower pump casing 3 rotates to the bottom of the shaft sleeve storage chamber, the toggle rod 22 faces the inside of the shaft sleeve storage chamber. When the toggle rod 22 moves down, it pushes the shaft sleeve 18 downward.

[0056] As attached Fig. 9 As shown, the connection kit 10 includes a sleeve 1001, a first spring positioning column 1002, a slot 1003 and a sealing disk 1004. The sleeve 1001 is movably sleeved between the power shaft 14 and the central pump shaft 20. The lower end of the sleeve 1001 is rotatably sleeved with a sealing disk 1004. The diameter of the sealing disk 1004 is equal to the inner diameter of the lower pump housing 3. The connecting pipe 17 is fixed to the lower side of the sealing disk 1004. The lower end of the sleeve 1001 has a circular array with a slot 1003. The first spring positioning column 1002 is fixed in the lower end of the power shaft 14 and the upper end of the central pump shaft 20. The column end of the first spring positioning column 1002 is movably inserted into the slot 1003.

[0057] The connection kit 10 works as follows: when the connecting pipe 17 moves upward, it pushes the sealing disc 1004 to move upward, so that the column end of the first spring positioning column 1002 below is forcibly disengaged from the slot 1003, and the sealing disc 1004 drives the sleeve 1001 to move upward until the entire sleeve 1001 completely leaves the central pump shaft 20, and the connecting pipe 17 completely leaves the lower pump housing 3, at which time the column end of the first spring positioning column 1002 above is inserted into the slot 1003;

[0058] Similarly, when the lever 22 moves downward, it drives the sleeve 1001 downward, so that the first spring positioning column 1002 is forcibly disengaged from the upper groove 1003, and the sleeve 1001 is downwardly inserted into the outside of the central pump shaft 20, and the sealing disk 1004 is inserted into the lower pump casing 3 until the connecting pipe 17 is docked with the uppermost sleeve 18 or impeller assembly 19. At this time, the column end of the first spring positioning column 1002 is inserted into the lower groove 1003.

[0059] As attached Fig.13 and attached Fig.14 As shown, the sleeve 18 includes an inner sleeve 1801, a first groove 1802, a first inner tube 1803 and a first clamping block 1804. A stepped edge is provided in the upper end of the first inner tube 1803, and a stepped groove is provided in the lower end. The inner diameter of the stepped groove is equal to the outer diameter of the stepped edge. When the upper and lower sleeves 18 are stacked up and down, the stepped edge of the upper first inner tube 1803 is inserted downward into the stepped groove of the lower first inner tube 1803. The inner sleeve 1801 rotates in the first inner tube 1803. The upper end of the inner sleeve 1801 is provided with a first groove 1802 and the lower end is integrally formed with a first clamping block 1804. When the upper and lower sleeves 18 are stacked up and down, the first clamping block 1804 of the upper inner sleeve 1801 is inserted downward into the first groove 1802 of the lower inner sleeve 1801.

[0060] Accordingly, as attached Fig.15 and attached Fig.16 As shown, the impeller assembly 19 includes a second inner tube 1901, a second clamping block 1902, an impeller body 1903 and a second groove 1904. A stepped edge is arranged in the upper end of the second inner tube 1901, and a stepped groove is arranged in the lower end. The inner diameter of the stepped groove is equal to the outer diameter of the stepped edge. When the upper and lower impeller assemblies 19 are stacked up and down, the stepped edge of the upper second inner tube 1901 is inserted downward into the stepped groove of the lower second inner tube 1901. An impeller body 1903 rotates in the second inner tube 1901. The upper end of the impeller body 1903 is provided with a second groove 1904 and the lower end is integrally formed with a second clamping block 1902. When the upper and lower impeller assemblies 19 are stacked up and down, the second clamping block 1902 of the upper impeller body 1903 is inserted downward into the second groove 1904 of the lower impeller body 1903.

[0061] When the upper shaft sleeve 18 is stacked downward onto the lower impeller assembly 19, the first clamping block 1804 is inserted downward into the second groove 1904, and the outer diameter of the step edge of the first inner tube 1803 is equal to the inner diameter of the step groove of the second inner tube 1901, so that the step edge of the first inner tube 1803 is inserted downward into the step groove of the second inner tube 1901, and the lower end of the connecting tube 17 is downwardly sleeved on the upper end of the first inner tube 1803 or the second inner tube 1901;

[0062] The sides of the supporting pump shaft 7, the power shaft 14 and the center pump shaft 20 are all provided with sliding grooves in a circular array, and the inner sides of the inner sleeve 1801, the inner sides of the impeller body 1903 and the inner sides of the sleeve 1001 are all provided with sliding keys in a circular array. When the sleeve 18 and the impeller group 19 are sleeved outside the center pump shaft 20, the sliding keys of the sleeve 18 and the impeller group 19 move up and down in the sliding grooves of the center pump shaft 20. When the sleeve 18 and the impeller group 19 are sleeved outside the supporting pump shaft 7, the sliding keys of the sleeve 18 and the impeller group 19 move up and down in the sliding grooves of the supporting pump shaft 7. When the sleeve 1001 is sleeved outside the power shaft 14 and the center pump shaft 20, the sliding keys of the sleeve 1001 move up and down in the sliding grooves of the power shaft 14 and the center pump shaft 20.

[0063] As attached Figure 5 and attached Figure 6 As shown, the clamping kit 21 includes a bottom tube 2101, a rotating sleeve 2102, a top sleeve 2103 and a fixed sleeve 2104. The bottom tube 2101 rotates inside the lower end of the lower pump casing 3. The lower end of the bottom tube 2101 is hollowed out for water to flow through. The upper end of the bottom tube 2101 is upwardly sleeved outside the lower end of the second inner tube 1901 of the lowest impeller assembly 19. A top sleeve 2103 is fixed inside the lower end of the bottom tube 2101. The upper and lower ends of the top sleeve 2103 are respectively rotated with a rotating sleeve 2102 and a fixed sleeve 2104. The rotating sleeve 2102 and the fixed sleeve 2104 are both rotated and sleeved outside the central pump shaft 20. The upper end of the rotating sleeve 2102 is pressed against the lower end of the impeller body 1903, and the fixed sleeve 2104 is fixed to the output end of the power assembly 15.

[0064] The working mode of the clamping kit 21 is as follows: when the power assembly 15 drives the fixed sleeve 2104 to move upward, the top sleeve 2103, the rotating sleeve 2102 and the bottom tube 2101 all move upward, thereby pushing the impeller assembly 19 to move upward; when the power assembly 15 drives the fixed sleeve 2104 to move downward, the top sleeve 2103, the rotating sleeve 2102, the bottom tube 2101 and the impeller assembly 19 all move downward freely due to gravity, thereby controlling the up and down movement of the impeller assembly 19;

[0065] Furthermore, when the top sleeve 2103 , the rotating sleeve 2102 , the bottom tube 2101 and the impeller assembly 19 move up and down, the rotating sleeve 2102 can rotate, so that the rotating sleeve 2102 will not interfere with the rotation of the impeller body 1903 .

[0066] As attached Figure 6 and attached Fig.10As shown, the power assembly 15 includes a bottom coupling 1501, a second limiting rod 1502 and a threaded barrel 1503. The bottom coupling 1501 rotates through the bracket 5. The second limiting rod 1502 is fixed to the upper circular array of the bottom coupling 1501. The second limiting rod 1502 moves up and down through the threaded barrel 1503. The threaded barrel 1503 threads through the center of the lower pump shell 3. The threaded barrel 1503 is the output end of the power assembly 15. The upper end of the threaded barrel 1503 is fixed to the lower end of the fixed sleeve 2104. The lower end of the central pump shaft 20 is located in the threaded barrel 1503 and the lower end rotates on the upper end of the bottom coupling 1501.

[0067] The working mode of the power assembly 15 is: manually twist the bottom coupling 1501, the bottom coupling 1501 drives the second limiting rod 1502 to rotate, the second limiting rod 1502 drives the threaded barrel 1503 to rotate, the threaded barrel 1503 can move up and down when rotating, and the threaded barrel 1503 drives the clamping kit 21 to move up and down.

[0068] As attached Fig.10 As shown, the transmission assembly 27 includes a first cylindrical gear 2701 and a second cylindrical gear 2702. The first cylindrical gear 2701 is fixedly sleeved on the lower end of the bottom coupling shaft 1501. The first cylindrical gear 2701 and the second cylindrical gear 2702 are meshed with each other. The second cylindrical gear 2702 is fixedly sleeved on the lower end of the center coupling shaft 6.

[0069] The working mode of the transmission assembly 27 is: when the bottom coupling shaft 1501 is rotated, the first cylindrical gear 2701 is driven to rotate, the first cylindrical gear 2701 drives the second cylindrical gear 2702 to rotate through the meshing between the teeth, and the second cylindrical gear 2702 drives the central coupling shaft 6 to rotate.

[0070] As attached Figure 2 and attached Fig.12 As shown, the one-way rotating support 8 includes a triangular support plate 801, a first spring 802, a pressure plate 803 and a top plate 804. The pressure plate 803 is horizontally movable and inserted into the lower end of the inner part of the upper pump shell 1. The first spring 802 is fixed between the pressure plate 803 and the lower end of the inner part of the upper pump shell 1. The triangular support plate 801 rotates at the lower end of the storage chamber through a rotating shaft. A torsion spring is fixed between the triangular support plate 801 and the rotating shaft. One end of the triangular support plate 801 is pressed against the lower side of the pressure plate 803. The top plate 804 is fixed between the lower ends of the two baffle rods 11. The top plate 804 rotates with the baffle rod 11. The pressure plate 803 is located within the rotation stroke of the top plate 804. When the top plate 804 rotates with the baffle rod 11, the pressure plate 803 is pushed away from the top of the triangular support plate 801.

[0071] In order to specifically show the installation method of the triangular support plate 801, refer to the attached Fig.17 , a torsion spring is fixed between the triangular support plate 801 and the rotating shaft;

[0072] In addition, a top groove is also provided on the side of the lower end of the first inner tube 1803, and the triangular support plate 801 located in the sleeve storage cavity can be inserted into the top groove of the first inner tube 1803 to support the first inner tube 1803;

[0073] The one-way rotating support 8 works as follows: when the pressing plate 803 is not pushed by the top plate 804, the top plate 804 presses the triangular support plate 801, so that the triangular support plate 801 cannot rotate, and when the impeller assembly 19 or the shaft sleeve 18 falls on the triangular support plate 801, the impeller assembly 19 or the shaft sleeve 18 is supported;

[0074] When the lower pump casing 3 rotates around the central connecting shaft 6, it drives the baffle rod 11 to rotate, and the baffle rod 11 drives the top plate 804 to move until the top plate 804 pushes the pressure plate 803 away, so that the triangular support plate 801 is no longer suppressed, and the triangular support plate 801 rotates a certain angle, and the impeller group 19 or the shaft sleeve 18 can fall freely. Then the torsion spring drives the triangular support plate 801 to rotate to a horizontal state, and the baffle rod 11 drives the top plate 804 to rotate in the opposite direction and return to its original position, and the first spring 802 pushes back the pressure plate 803 to continue to suppress the triangular support plate 801.

[0075] The overall working principle of this device is:

[0076] The external motor drives the power shaft 14 to rotate through the transmission belt, and the power shaft 14 drives the central pump shaft 20 to rotate through the sleeve 1001, and the central pump shaft 20 drives the inner sleeve 1801 and the impeller body 1903 to rotate, and the water flows from the water inlet pipe 4 into the lower pump casing 3. When the impeller body 1903 rotates, it pumps water upward, and the water flows in sequence through the space between the lower pump casing 3 and the second inner tube 1901, the space inside the bottom tube 2101, the space inside the second inner tube 1901, the space inside the first inner tube 1803, the connecting pipe 17 and the water outlet pipe 16, so as to pump water;

[0077] When the number of impellers 19 and sleeves 18 on the central pump shaft 20 needs to be adjusted, the power assembly 15 is operated to drive the impellers 19 and sleeves 18 in the lower pump casing 3 to move upward through the clamping assembly 21, and the connecting pipe 17, the sealing plate 1004 and the sleeve 1001 are all moved upward, so that the connecting pipe 17 completely leaves the lower pump casing 3, and the bracket 5, the lower pump casing 3 and the screw on the left side of the upper pump casing 1 are removed, and the lower pump casing 3 can be rotated so that the lower pump casing 3 rotates around the central connecting shaft 6 until the central pump shaft 20 is aligned with the supporting pump shaft 7. In addition, when the lower pump housing 3 rotates around the central connecting shaft 6, the lower pump housing 3 drives the blocking rod 11 to rotate, the blocking rod 11 pushes the lever 22 to rotate, and the outer sleeve 23 rotates around the lifting internal thread sleeve 25. Therefore, when the central pump shaft 20 is aligned with the supporting pump shaft 7 in the sleeve storage chamber, the lever 22 rotates to face the sleeve storage chamber. When the central pump shaft 20 is aligned with the supporting pump shaft 7 in the impeller group storage chamber, the lever 22 rotates to face the impeller group storage chamber.

[0078] When it is necessary to increase the power, rotate the lower pump casing 3, first align the central pump shaft 20 with the supporting pump shaft 7 in the sleeve storage chamber, operate the power assembly 15, and continue to drive the impeller group 19 and the sleeve 18 in the lower pump casing 3 to move upward through the clamping kit 21, and the upper sleeve 18 is upwardly sleeved on the supporting pump shaft 7 in the sleeve storage chamber, and operate the power assembly 15, so that the impeller group 19 in the lower pump casing 3 moves down a short distance, so that the upper sleeve 18 and the lower impeller group 19 are disengaged from each other, and at this time, the unidirectional rotating bracket 8 supports the sleeve 18 upward, so that the sleeve 18 remains in the lower pump casing 3, and then reverses to the lower pump casing 3, aligns the central pump shaft 20 with the supporting pump shaft 7 in the impeller group storage chamber, and in addition, when operating the power assembly 15, the power assembly 15 is also The transmission assembly 27 drives the central connecting shaft 6 to rotate, and the central connecting shaft 6 drives the lifting screw 12 to rotate, thereby driving the lifting internal threaded sleeve 25 to move up and down. When the impeller group 19 and the shaft sleeve 18 move up, the lever 22 moves up, and when the impeller group 19 and the shaft sleeve 18 move down, the lever 22 moves down. Then, when the central pump shaft 20 is aligned with the supporting pump shaft 7 in the impeller group storage chamber, the power assembly 15 is operated to move the impeller group 19 downward and sleeve it outside the central pump shaft 20, so that the number of impeller groups 19 outside the central pump shaft 20 is larger, the power is greater, and the water pumping capacity is stronger. Then, the lower pump casing 3 is rotated to realign the central pump shaft 20 with the power shaft 14, and the lever 22 is moved downward to move the sleeve 1001 downward, and the sleeve 1001 is sleeved between the power shaft 14 and the central pump shaft 20;

[0079] In summary, when the power needs to be increased, the lower pump housing 3 is rotated, and the central pump shaft 20 is first aligned with the supporting pump shaft 7 in the sleeve storage chamber, so that the sleeve 18 on the central pump shaft 20 is upwardly sleeved onto the supporting pump shaft 7 in the sleeve storage chamber, and then the central pump shaft 20 is aligned with the supporting pump shaft 7 in the impeller group storage chamber, so that the impeller group 19 is downwardly sleeved onto the central pump shaft 20, and finally the central pump shaft 20 is aligned with the power shaft 14 and connected to the power shaft 14;

[0080] Correspondingly, when it is necessary to reduce the power, rotate the lower pump casing 3, first align the central pump shaft 20 with the supporting pump shaft 7 in the impeller group storage chamber, so that the impeller group 19 on the central pump shaft 20 is upwardly sleeved onto the supporting pump shaft 7 in the impeller group storage chamber, and then align the central pump shaft 20 with the supporting pump shaft 7 in the sleeve storage chamber, so that the sleeve 18 is downwardly sleeved onto the central pump shaft 20, and finally the central pump shaft 20 is aligned with the power shaft 14 and connected to the power shaft 14, the impeller group 19 is fewer in number, the power is smaller, and the water pumping capacity is weaker.

[0081] It should be noted that in the description of the present invention, terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicating directions or positional relationships are based on the attached Figure 1The directions or positional relationships shown are only for the convenience of description and are not intended to indicate or imply that a device or element must have a specific orientation, be constructed and operate in a specific orientation. Therefore, they should not be understood as limitations on the present invention. In addition, the terms "first", "second" and "third" are only used for descriptive purposes and are not intended to indicate or imply relative importance.

[0082] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0083] So far, the technical solution of the present invention has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. A vertical energy-saving water pump, characterized in that: It comprises an upper pump casing (1), a lower pump casing (3), a shaft sleeve (18) and an impeller assembly (19); Two supporting pump shafts (7) are fixed to the upper end of the upper pump casing (1), and shaft sleeves (18) and impeller groups (19) are respectively sleeved on the upper and lower sides of the two supporting pump shafts (7). A power shaft (14) is rotatable inside the upper end of the upper pump casing (1); A central connecting shaft (6) is rotatable between the lower pump housing (3) and the upper pump housing (1), and the lower pump housing (3) rotates around the central connecting shaft (6). The upper end of the central connecting shaft (6) is provided with a toggle assembly for driving a shaft sleeve (18) and an impeller assembly (19) on a supporting pump shaft (7) to move up and down; A central pump shaft (20) rotates inside the lower pump casing (3). When the lower pump casing (3) rotates forward and reversely around the central connecting shaft (6), the central pump shaft (20) is aligned with two supporting pump shafts (7) respectively. The central pump shaft (20) is fixedly connected to the power shaft (14) through a connecting sleeve (10). A plurality of impeller groups (19) and a plurality of shaft sleeves (18) are movably sleeved on the outside of the central pump shaft (20) in sequence from bottom to top. The uppermost shaft sleeve (18) is connected to a water outlet pipe (16) on the side of the lower pump casing (3).

2. A vertical energy-saving water pump according to claim 1, characterized in that: The toggle assembly comprises a stop rod (11), a lifting screw rod (12), a first limiting rod (13), a toggle rod (22), an outer sleeve (23), a second spring positioning column (24) and a lifting internal thread sleeve (25); the lifting screw rod (12) is fixed to the upper end of the central connecting shaft (6); the lifting screw rod (12) is located in the upper pump housing (1); the upper end of the lifting screw rod (12) is threadedly passed through the lifting internal thread sleeve (25); the first limiting rod (13) is fixed to the lower side of the inner part of the upper pump housing (1); the first limiting rod (13) The lifting internal thread sleeve (25) is movable up and down, the lifting internal thread sleeve (25) is rotatably sleeved with an external clamping sleeve (23), a lever (22) is fixed on the side of the external clamping sleeve (23), a second spring positioning column (24) is installed between the lifting internal thread sleeve (25) and the external clamping sleeve (23), the second spring positioning column (24) fixes the lifting internal thread sleeve (25) and the external clamping sleeve (23) together, two stop rods (11) are fixed on the upper end of the lower pump housing (3), and the lever (22) is located between the two stop rods (11).

3. A vertical energy-saving water pump according to claim 2, characterized in that: Two one-way rotating brackets (8) are installed in the lower end of the upper pump housing (1), and the two one-way rotating brackets (8) respectively support an impeller assembly (19) outside a supporting pump shaft (7) and a shaft sleeve (18) outside another supporting pump shaft (7); The one-way rotating support (8) includes a triangular support plate (801), a first spring (802), a pressure plate (803) and a top plate (804); the pressure plate (803) is horizontally movable and inserted into the lower end of the upper pump housing (1); the first spring (802) is fixed between the pressure plate (803) and the lower end of the upper pump housing (1); the triangular support plate (801) is rotated in the lower end of the upper pump housing (1) via a rotating shaft; one end of the triangular support plate (801) is pressed against the lower side of the pressure plate (803); the top plate (804) is fixed between the lower ends of the two blocking rods (11); and the top plate (804) pushes the pressure plate (803) away from the top of the triangular support plate (801) when rotating along with the blocking rod (11).

4. A vertical energy-saving water pump according to claim 1, characterized in that: The connection kit (10) comprises a sleeve (1001), a first spring positioning column (1002), a slot (1003) and a sealing disk (1004); the sleeve (1001) is movably sleeved between the power shaft (14) and the central pump shaft (20); the lower end of the sleeve (1001) is rotatably sleeved with a sealing disk (1004); the diameter of the sealing disk (1004) is equal to the inner diameter of the lower pump housing (3); the lower end of the sleeve (1001) is provided with a circular array of slots (1003); the lower end of the power shaft (14) and the upper end of the central pump shaft (20) are both fixed with first spring positioning columns (1002); the column end of one of the first spring positioning columns (1002) is movably inserted into the slot (1003).

5. A vertical energy-saving water pump according to claim 4, characterized in that: The upper end of the uppermost shaft sleeve (18) of the central pump shaft (20) is fixed to the water inlet of the connecting pipe (17), the water outlet of the connecting pipe (17) is inclined downward, and one end of the outlet pipe (16) is inclined upward, so that after the connecting pipe (17) moves downward, its water outlet docks with the outlet pipe (16), and the other end of the outlet pipe (16) passes through the lower pump casing (3), and the connecting pipe (17) is fixed to the lower side of the sealing disk (1004).

6. A vertical energy-saving water pump according to claim 1, characterized in that: A power assembly (15) and a clamping kit (21) are installed in the lower end of the lower pump housing (3); the output end of the power assembly (15) is installed at the lower end of the lowest impeller assembly (19) on the central pump shaft (20) through the clamping kit (21); and the power assembly (15) drives the impeller assembly (19) on the central pump shaft (20) to move up and down.

7. A vertical energy-saving water pump according to claim 6, characterized in that: The clamping kit (21) comprises a bottom tube (2101), a rotating sleeve (2102), a top sleeve (2103) and a fixed sleeve (2104); the bottom tube (2101) rotates inside the lower end of the lower pump casing (3); the upper end of the bottom tube (2101) is upwardly sleeved outside the lower end of the lowest impeller assembly (19); the top sleeve (2103) is fixed inside the bottom tube (2101); the upper end and the lower end of the top sleeve (2103) are respectively rotatably provided with a rotating sleeve (2102) and a fixed sleeve (2104); the rotating sleeve (2102) and the fixed sleeve (2104) are both rotatably sleeved outside the central pump shaft (20); the upper end of the rotating sleeve (2102) is pressed against the lower end of the lowest impeller assembly (19); and the fixed sleeve (2104) is fixed to the output end of the power assembly (15).

8. A vertical energy-saving water pump according to claim 7, characterized in that: A bracket (5) is fixed to the lower end of the lower pump casing (3); The power assembly (15) comprises a bottom coupling (1501), a second limiting rod (1502) and a threaded barrel (1503); the bottom coupling (1501) rotates and passes through the bracket (5); the second limiting rod (1502) is fixed in a circular array at the upper end of the bottom coupling (1501); the second limiting rod (1502) moves up and down and passes through the threaded barrel (1503); the threaded barrel (1503) threads through the center of the lower pump casing (3); the upper end of the threaded barrel (1503) is fixed to the lower end of the fixed sleeve (2104); the central pump shaft (20) is located in the threaded barrel (1503) and the lower end rotates on the upper end of the bottom coupling (1501).

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