Submersible pump unit with sand prevention and energy saving effects

Abstract

The application relates to the technical field of submersible pumps, in particular to a submersible pump unit with sand prevention and energy saving effects, which comprises a pump body, the bottom of the pump body is fixed with a transmission pipe, the surface of the transmission pipe is provided with a water outlet, the bottom of the transmission pipe is fixed with a cleaning pipe, the bottom of the cleaning pipe is fixed with an extension ring, the surface of the extension ring is fixed with a protection rod, the other end of the protection rod is fixed with a bottom plate; the inside of the cleaning pipe is fixed with a blocking plate, the bottom of the cleaning pipe is provided with an annular groove, the annular groove is provided with a lifting ring which can move in the annular groove; an extension rod is arranged in the extension ring, the inside of the cleaning pipe is provided with a swing plate; the swing plate swings around the rotating shaft with the downward movement of the driving plate, so that the swing plate is in an inclined state; the water entering the inside of the cleaning pipe from the extension rod impacts the surface of the lifting ring downward under the guidance of the swing plate, the top of the lifting ring is in an inclined state, and the silt pushed downward by the downward pressing plate flows out through the annular groove under the impact of the water flow.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of submersible pumps, in particular to a submersible pump unit with sand prevention and energy saving effects. BACKGROUND

[0002] A submersible pump is an important device for deep well water lifting. When in use, the entire unit is submerged in water to work, extracting underground water to the ground surface, which is used for domestic water, mine rescue, industrial cooling, farmland irrigation, seawater lifting, ship load adjustment, and also for fountain landscape.

[0003] In the prior art, patent number CN221568876U, named a sand prevention type multi-stage submersible pump, comprises a multi-stage submersible pump body and an installation shell inserted at the bottom of the multi-stage submersible pump body, the bottom of the multi-stage submersible pump body is provided with a support mechanism, and the installation shell is provided with a filtering mechanism, the filtering mechanism comprises a rotating shaft, a conical rotating drum, a water inlet pipe, a plurality of spiral blades and a conical filter cylinder. The beneficial effects of the present application are that the water inlet pipe first draws water into the conical rotating drum, under the action of centrifugal force, the water is filtered by the conical filter cylinder and then thrown out, and flows into the multi-stage submersible pump body to complete water pumping. The sand and impurities are moved from the small end of the rotating drum to the large end of the rotating drum through the spiral blades. Due to the increase of the rotating diameter, the centrifugal force increases rapidly, and finally the sand and impurities can be discharged through the one-way drain valve. The support mechanism uses a plurality of support rods to support the multi-stage submersible pump body, and the plurality of support rods can be adjusted to facilitate use.

[0004] However, when the existing sand is thrown out by centrifugal force, the sand will stay inside the water pump. After a long time of use, the sand will still be sucked in after accumulation. SUMMARY

[0005] The purpose of the present application is to provide a submersible pump unit with sand prevention and energy saving effects to solve the problems raised in the background.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a submersible pump unit with sand prevention and energy saving effects, comprising:

[0007] A pump body, a transmission pipe is fixed at the bottom of the pump body, a water outlet is arranged on the surface of the transmission pipe, a cleaning pipe is fixed at the bottom of the transmission pipe, an extension ring is fixed at the bottom of the cleaning pipe, a protection rod is fixed on the surface of the extension ring, and a bottom plate is fixed at the other end of the protection rod;

[0008] A blocking plate is fixed in the cleaning pipe, a ring groove is formed at the bottom of the cleaning pipe, and a lifting ring is arranged in the ring groove and can move in the ring groove;

[0009] An extension rod is arranged in the cleaning pipe, and a swing plate is arranged in the cleaning pipe.

[0010] Preferably, the inside of the transmission pipe is provided with an impeller, the inside of the water outlet communicates with the inside of the transmission pipe, the inside of the transmission pipe communicates with the inside of the cleaning pipe, the surface of the cleaning pipe is fixedly provided with an extension rod, the inside of the extension rod is provided with a through hole, the through hole is provided with a filter screen, the through hole communicates with the inside of the cleaning pipe, the surface of the extension ring is fixedly provided with a baffle, the bottom of the cleaning pipe is provided with a center block, the surface of the center block is fixedly provided with a protective ring, the surface of the center block is fixedly provided with a first motor, the surface of the center block is fixedly provided with a fixing frame, and the surface of the fixing frame is fixedly provided with an air cylinder.

[0011] Preferably, the end of the air cylinder is provided with an L-shaped rod, the L-shaped rod can drive the L-shaped rod to move, the inside of the cleaning pipe is provided with an inner cavity, the inner cavity is provided with a pressing plate, the surface of the pressing plate is fixedly provided with a U-shaped rod, the surface of the U-shaped rod is fixedly provided with a lifting rod, the other end of the lifting rod is connected with a lifting ring, an annular groove is formed between the center block and the extension ring, the lifting ring is located in the annular groove and can move in the annular groove.

[0012] Preferably, the surface of the center block is provided with a rotating plate, the rotating plate is connected with the driving shaft of the first motor, the rotating plate can be driven to rotate by the first motor, the through hole is fixedly provided with a fixing rod, the fixing rod is provided in plurality, the other end of the fixing rod is fixedly provided with a second motor, the end of the second motor is provided with an impeller, and the second motor can drive the impeller to rotate.

[0013] Preferably, the bottom of the cleaning pipe is fixedly provided with a stabilizing rod, the stabilizing rod is provided in plurality, the other end of the stabilizing rod is fixedly provided on the bottom of the center block, so that the center block is stably arranged on the bottom of the cleaning pipe, the surface of the lifting ring is fixedly provided with a driving rod, the surface of the driving rod is fixedly provided with a driving plate, the inside of the cleaning pipe is inserted with a rotating shaft, the rotating shaft can rotate in the inside of the cleaning pipe, the surface of the rotating shaft is fixedly provided with an oscillating plate, the oscillating plate can oscillate along the rotating shaft, and the surface of the oscillating plate is provided with a moving groove.

[0014] Preferably, the oscillating plate is provided in plurality, the driving rod is inserted in the moving groove in the surface of the oscillating plate, and the driving rod is simultaneously inserted in the moving grooves in the surfaces of the plurality of oscillating plates, the driving rod can move in the moving grooves, the surface of the driving rod is fixedly provided with a plurality of driving plates, the driving plates are located at the top and bottom of the oscillating plate, and when the driving rod moves, the driving plates on the surface of the driving rod are supported on the surface of the oscillating plate, so that the oscillating plate oscillates around the rotating shaft.

[0015] Preferably, the bottom of the center block is fixedly provided with a protective ring, the protective ring is located outside the first motor and the air cylinder, the diameter of the inside of the protective ring is greater than the external diameter of the first motor and the air cylinder, and the L-shaped rod is located outside the protective ring, and the L-shaped rod will not hit the end of the protective ring under the driving of the air cylinder.

[0016] Preferably, the impeller rotates under the drive of the second motor, so that the water enters the inner cavity through the rotation of the impeller, the blocking plate is located at one end of the through hole, the water entering the inner cavity from the through hole impacts on the surface of the blocking plate, and the swing plate is located between the through hole and the blocking plate, and when the lifting ring is located in the ring groove, the swing plate is in a horizontal state, and the water impacts on the surface of the blocking plate under the guidance of the swing plate.

[0017] Preferably, after the lifting ring is lowered from the ring groove, the driving rod is lowered along with the lifting ring, so that the swing plate swings around the rotating shaft, the swing plate is in an inclined state, and the end of the swing plate away from the through hole faces downward, and the water flow in the through hole flows in the direction of the ring groove under the guidance of the swing plate.

[0018] Preferably, the rotating plate rotates in the inner cavity, the silt in the water in the inner cavity is located on the surface of the blocking plate under the action of centrifugal force, the lower pressing plate is lowered to drive the silt on the surface of the blocking plate to be lowered, and the inside of the transmission pipe is provided with an impeller, and the rotation of the impeller in the transmission pipe enables the water in the inner cavity to be sucked into the water outlet.

[0019] Compared with the prior art, the present application has the following beneficial effects:

[0020] The lifting ring is driven by the L-shaped rod to be lowered from the ring groove, the ring groove is opened after the lifting ring is lowered, the top of the lifting ring is connected with the lower pressing plate through the lifting rod and the U-shaped rod, the lower pressing plate is lowered along with the lifting ring, the lower pressing plate pushes the silt around downward, the top of the lifting ring is connected with the driving rod, the driving rod is lowered along with the lifting ring, the driving rod is supported on the surface of the swing plate through the driving plate, the swing plate swings around the rotating shaft along with the lowering of the driving plate, the swing plate is in an inclined state, the water in the cleaning pipe enters the inside of the extending rod and impacts on the surface of the lifting ring under the guidance of the swing plate, and the top of the lifting ring is in an inclined state, so that the silt pushed downward by the lower pressing plate flows out through the ring groove under the impact of the water flow. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a structural schematic view of the present application.

[0022] Figure 2 It is another perspective structural schematic view of the present application.

[0023] Figure 3 It is a protective ring structural schematic view of the present application.

[0024] Figure 4 It is an internal structure schematic view of the protective ring of the present application.

[0025] Figure 5 It is Figure 4 It is an enlarged structural schematic view of position A in the present application.

[0026] Figure 6 It is a cross-sectional structure schematic diagram of the present application.

[0027] Figure 7 It is a cross-sectional enlarged structure schematic diagram of the present application.

[0028] Figure 8 It is another cross-sectional enlarged structure schematic diagram of the present application.

[0029] Figure 9 It is Figure 8 It is a structure enlarged schematic diagram at B.

[0030] Figure 10 It is a swing plate structure schematic diagram of the present application.

[0031] In the figure: pump body 1, transmission pipe 2, cleaning pipe 3, protection rod 4, bottom plate 5, water outlet 6, extension rod 7, through hole 8, filter screen 9, extension ring 10, baffle 11, protection ring 12, center block 13, first motor 14, fixed frame 15, air cylinder 16, L-shaped rod 17, inner cavity 18, U-shaped rod 20, rotating plate 21, lower pressing plate 22, fixed rod 23, second motor 24, impeller 25, blocking plate 26, ring groove 27, lifting ring 28, lifting rod 29, stabilizing rod 30, swing plate 31, driving rod 32, moving groove 33, rotating shaft 34, driving plate 35. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical scheme of the present application clear, complete and the advantages more clear and obvious, the following will be further described in detail by combining with the drawings. It should be understood that the specific embodiments described here are part of the embodiments of the present application, not all the embodiments, only to explain the embodiments of the present application, and not for limiting the embodiments of the present application, all other embodiments obtained by the ordinary skilled in the art without doing creative work, belong to the scope of protection of the present application.

[0033] Please refer to Figures 1 to 10 The present application provides a technical scheme:

[0034] Embodiment 1: A submersible pump unit with sand prevention and energy saving effect, comprising: a pump body 1, the bottom of the pump body 1 is fixed with a transmission pipe 2, the surface of the transmission pipe 2 is provided with a water outlet 6, the bottom of the transmission pipe 2 is fixed with a cleaning pipe 3, the bottom of the cleaning pipe 3 is fixed with an extension ring 10, the surface of the extension ring 10 is fixed with a protection rod 4, the other end of the protection rod 4 is fixed with a bottom plate 5; the inside of the cleaning pipe 3 is fixed with a blocking plate 26, the bottom of the cleaning pipe 3 is provided with an annular groove 27, the annular groove 27 is provided with a lifting ring 28 which can move in the annular groove 27; an extension rod 7, the inside of the extension rod 7 is provided with an impeller 25, the inside of the cleaning pipe 3 is provided with a swing plate 31, the annular groove 27 is located between the center block 13 and the cleaning pipe 3, and when the lifting ring 28 is moved up in the annular groove 27, the driving plate 35 pushes the swing plate 31, so that the swing plate 31 is in a horizontal state, and the water flow in the extension rod 7 impacts on the surface of the blocking plate 26 under the guidance of the swing plate 31.

[0035] The embodiment 2 is based on the embodiment 1, the inside of the transmission pipe 2 is provided with an impeller, the inside of the water outlet 6 is communicated with the inside of the transmission pipe 2, the inside of the transmission pipe 2 is communicated with the inside of the cleaning pipe 3, the surface of the cleaning pipe 3 is fixedly provided with an extension rod 7, the inside of the extension rod 7 is provided with a through hole 8, the through hole 8 is provided with a filter screen 9, the through hole 8 is communicated with the inside of the cleaning pipe 3, the surface of the extension ring 10 is fixedly provided with a baffle 11, the bottom of the cleaning pipe 3 is provided with a center block 13, the surface of the center block 13 is fixedly provided with a protection ring 12, the surface of the center block 13 is fixedly provided with a first motor 14, the surface of the center block 13 is fixedly provided with a fixing frame 15, the surface of the fixing frame 15 is fixedly provided with an air cylinder 16, the bottom of the cleaning pipe 3 is fixedly provided with a stabilizing rod 30, the stabilizing rod 30 is provided in multiple groups, the other end of the stabilizing rod 30 is fixedly provided at the bottom of the center block 13, so that the center block 13 is stably arranged at the bottom of the cleaning pipe 3, the surface of the lifting ring 28 is fixedly provided with a driving rod 32, the surface of the driving rod 32 is fixedly provided with a driving plate 35, the inside of the cleaning pipe 3 is inserted with a rotating shaft 34, the rotating shaft 34 can rotate in the inside of the cleaning pipe 3, the surface of the rotating shaft 34 is fixedly provided with an oscillating plate 31, the oscillating plate 31 can oscillate along the rotating shaft 34, the surface of the oscillating plate 31 is provided with a moving groove 33, the oscillating plate 31 is provided in multiple groups, the driving rod 32 is inserted in the moving groove 33 on the surface of the oscillating plate 31, and the driving rod 32 is simultaneously inserted in the moving groove 33 on the surface of the multiple groups of oscillating plates 31, the driving rod 32 can move in the moving groove 33, the surface of the driving rod 32 is fixedly provided with multiple groups of driving plates 35, the driving plates 35 are located at the top and bottom of the oscillating plate 31, when the driving rod 32 moves, the driving plates 35 on the surface of the driving rod 32 are supported on the surface of the oscillating plate 31, so that the oscillating plate 31 oscillates around the rotating shaft 34, the bottom of the center block 13 is fixedly provided with the protection ring 12, the protection ring 12 is located outside the first motor 14 and the air cylinder 16, and the diameter inside the protection ring 12 is greater than the external diameter of the first motor 14 and the air cylinder 16, and the L-shaped rod 17 is located outside the protection ring 12, the L-shaped rod 17 will not hit the end of the protection ring 12 under the drive of the air cylinder 16, the air cylinder 16 drives the L-shaped rod 17 to move downward, the L-shaped rod 17 is connected with the lifting ring 28, the lifting ring 28 moves downward from the ring groove 27 under the drive of the L-shaped rod 17, when the lifting ring 28 moves downward, the ring groove 27 is opened, and the top of the lifting ring 28 is connected with the pressing plate 22 through the lifting rod 29 and the U-shaped rod 20, the pressing plate 22 moves downward along with the lifting ring 28, and the pressing plate 22 pushes the mud around downward.

[0036] The end of the cylinder 16 is provided with an L-shaped rod 17 which can drive the L-shaped rod 17 to move, the inside of the cleaning pipe 3 is provided with an inner cavity 18, the inner cavity 18 is provided with a lower pressing plate 22, the surface of the lower pressing plate 22 is fixedly connected with a U-shaped rod 20, the surface of the U-shaped rod 20 is fixedly connected with a lifting rod 29, the other end of the lifting rod 29 is connected with a lifting ring 28, the center block 13 and the extension ring 10 are provided with a ring groove 27, the lifting ring 28 is located in the ring groove 27 and can move in the ring groove 27, after the lifting ring 28 moves downward, the ring groove 27 is opened, and the top of the lifting ring 28 is connected with the lower pressing plate 22 through the lifting rod 29 and the U-shaped rod 20, the lower pressing plate 22 moves downward with the lifting ring 28, the lower pressing plate 22 pushes the surrounding silt downward, and the top of the lifting ring 28 is connected with a driving rod 32, the driving rod 32 moves downward with the lifting ring 28, the driving rod 32 is supported on the surface of the swinging plate 31 through the surface of the driving plate 35, so that the swinging plate 31 swings around the pivot 34 with the downward movement of the driving plate 35, and the swinging plate 31 is in an inclined state.

[0037] The surface of the center block 13 is provided with a rotating plate 21 which is connected with the driving shaft of the first motor 14 and can be driven by the first motor 14 to rotate, a plurality of fixed rods 23 are fixedly connected in the through hole 8, the other end of the fixed rod 23 is fixedly connected with a second motor 24, the end of the second motor 24 is provided with an impeller 25 which can be driven by the second motor 24 to rotate, the impeller 25 rotates under the driving of the second motor 24, so that water enters the inner cavity 18 through the rotation of the impeller 25, the blocking plate 26 is located at one end of the through hole 8, the water entering the inner cavity 18 from the through hole 8 impacts the surface of the blocking plate 26, and the swinging plate 31 is located between the through hole 8 and the blocking plate 26, when the lifting ring 28 is located in the ring groove 27, the swinging plate 31 is in a horizontal state, the water impacts the surface of the blocking plate 26 under the guidance of the swinging plate 31, after the lifting ring 28 moves downward from the ring groove 27, the driving rod 32 moves downward with the lifting ring 28, so that the swinging plate 31 swings around the pivot 34, the swinging plate 31 is in an inclined state, and the end of the swinging plate 31 away from the through hole 8 faces downward, the water flow in the through hole 8 flows in the direction of the ring groove 27 under the guidance of the swinging plate 31, the rotating plate 21 rotates in the inner cavity 18, the silt in the water in the inner cavity 18 is located on the surface of the blocking plate 26 under the action of centrifugal force, the lower pressing plate 22 moves downward to drive the silt on the surface of the blocking plate 26 to move downward, and the inside of the transmission pipe 2 is provided with an impeller, the rotation of the impeller in the transmission pipe 2 causes the water in the inner cavity 18 to be sucked into the water outlet 6.

[0038] The second motor 24 inside the extension rod 7 drives the impeller 25 to rotate, so that the water is sucked into the inside of the cleaning pipe 3 through the extension rod 7, the inside of the cleaning pipe 3 is provided with a baffle 26 to prevent the water flow from directly impacting the structure inside the cleaning pipe 3, the first motor 14 drives the rotating plate 21 to rotate, so that the water inside the cleaning pipe 3 rotates, and the silt is located around the inside of the cleaning pipe 3 through the centrifugal force, the L-shaped rod 17 is connected with the lifting ring 28, the lifting ring 28 is driven by the L-shaped rod 17 to move down from the ring groove 27, when the lifting ring 28 moves down, the ring groove 27 is opened, and the top of the lifting ring 28 is connected with the pressing plate 22 through the lifting rod 29 and the U-shaped rod 20, the pressing plate 22 moves down with the lifting ring 28, the pressing plate 22 pushes the silt around down, and the top of the lifting ring 28 is connected with the driving rod 32, the driving rod 32 moves down with the lifting ring 28, the driving rod 32 is supported on the surface of the swing plate 31 through the driving plate 35 on the surface, so that the swing plate 31 swings around the rotating shaft 34 with the driving plate 35 moving down, so that the swing plate 31 is in an inclined state, the water in the extension rod 7 entering the inside of the cleaning pipe 3 impacts on the surface of the lifting ring 28 under the guidance of the swing plate 31, and the top of the lifting ring 28 is inclined, so that the silt pushed down by the pressing plate 22 flows out through the ring groove 27 under the impact of the water flow, the center block 13 is fixed on the bottom of the cleaning pipe 3 through the stabilizing rod 30, the ring groove 27 is located between the center block 13 and the cleaning pipe 3, and when the lifting ring 28 moves up into the ring groove 27, the driving plate 35 pushes the swing plate 31, so that the swing plate 31 is in a horizontal state, the water flow in the extension rod 7 impacts on the surface of the baffle 26 under the guidance of the swing plate 31, and the silt inside the baffle 26 is not impacted to the middle position, the water in the cleaning pipe 3 after desanding is acted on the inside of the water outlet 6 through the grinding wheel inside the transmission pipe 2.

[0039] Although the above describes the specific embodiments of the present application in order to enable a person skilled in the art to understand the present application, the present application is not limited to the scope of the specific embodiments, and all the application creations utilizing the concept of the present application are protected as long as various changes are within the spirit and scope of the present application defined and determined by the appended claims.

Claims

1. A submersible pump unit with sand-proof and energy-saving effects, characterized in that: Include: The bottom of the pump body (1) is fixed with a transmission pipe (2), the surface of the transmission pipe (2) is provided with a water outlet (6), the bottom of the transmission pipe (2) is fixed with a cleaning pipe (3), the bottom of the cleaning pipe (3) is fixed with an extension ring (10), the surface of the extension ring (10) is fixed with a protection rod (4), the other end of the protection rod (4) is fixed with a bottom plate (5); The inside of the cleaning pipe (3) is fixed with a blocking plate (26), the bottom of the cleaning pipe (3) is provided with an annular groove (27), the annular groove (27) is provided with a lifting ring (28), the lifting ring (28) can move in the annular groove (27); An extension rod (7) is provided with an impeller (25) inside the extension rod (7). A swing plate (31) is provided inside the cleaning pipe (3). An impeller is provided inside the transmission pipe (2). The interior of the outlet (6) is connected to the interior of the transmission pipe (2). The interior of the transmission pipe (2) is connected to the interior of the cleaning pipe (3). An extension rod (7) is fixed on the surface of the cleaning pipe (3). A through hole (8) is opened inside the extension rod (7). A filter screen (9) is provided in the through hole (8). The through hole (8) is connected to the interior of the cleaning pipe (3). A baffle (11) is fixed on the surface of the extension ring (10). A center block (13) is provided at the bottom of the cleaning pipe (3). A protective ring (12) is fixed on the surface of the center block (13). The first motor (14) has a fixed frame (15) fixed on the surface of the center block (13), and a cylinder (16) fixed on the surface of the fixed frame (15). An L-shaped rod (17) is provided at the end of the cylinder (16). The L-shaped rod (17) can drive the L-shaped rod (17) to move. The cleaning pipe (3) has an inner cavity (18) inside. A lower pressure plate (22) is provided in the inner cavity (18). A U-shaped rod (20) is fixed on the surface of the lower pressure plate (22). A lifting rod (29) is fixed on the surface of the U-shaped rod (20). The other end of the lifting rod (29) is connected to a lifting ring (28). A ring groove (27) is provided between the center block (13) and the extension ring (10). The lifting ring (28) is located in the ring groove (27), and the lifting ring (28) can move in the ring groove. The central block (13) moves within the groove (27). A rotating plate (21) is provided on the surface of the central block (13). The rotating plate (21) is connected to the drive shaft of the first motor (14). The first motor (14) can drive the rotating plate (21) to rotate. A fixing rod (23) is fixed in the through hole (8). Multiple sets of fixing rods (23) are provided. A second motor (24) is fixed at the other end of the fixing rod (23). An impeller (25) is provided at the end of the second motor (24). The second motor (24) can drive the impeller (25) to rotate. A stabilizing rod (30) is fixed at the bottom of the cleaning pipe (3). Multiple sets of stabilizing rods (30) are provided. The other end of the stabilizing rod (30) is fixed to the bottom of the central block (13), so that the central block (13) is stable in the cleaning... At the bottom of the tube (3), a driving rod (32) is fixed to the surface of the lifting ring (28), and a driving plate (35) is fixed to the surface of the driving rod (32). A rotating shaft (34) is inserted into the inside of the cleaning tube (3). The rotating shaft (34) can rotate inside the cleaning tube (3). A swing plate (31) is fixed to the surface of the rotating shaft (34). The swing plate (31) can swing along the rotating shaft (34). A moving groove (33) is opened on the surface of the swing plate (31). There are multiple sets of swing plates (31). The driving rod (32) is inserted into the moving groove (33) on the surface of the swing plate (31), and the driving rod (32) is simultaneously inserted into the moving groove (33) on the surface of multiple sets of swing plates (31). The driving rod (32) can move in the moving groove (33).The surface of the driving rod (32) is fixed with multiple groups of driving plates (35), the driving plates (35) are located at the top and bottom of the swing plate (31), when the driving rod (32) moves, the driving plates (35) on the surface of the driving rod (32) are supported on the surface of the swing plate (31), so that the swing plate (31) swings around the rotating shaft (34), the bottom of the center block (13) is fixed with a protective ring (12), the protective ring (12) is located outside the first motor (14) and the cylinder (16), the diameter inside the protective ring (12) is greater than the external diameter of the first motor (14) and the cylinder (16), and the L-shaped rod (17) is located outside the protective ring (12), and the L-shaped rod (17) cannot hit the end of the protective ring (12) under the drive of the cylinder (16).

2. The submersible pump set with sand prevention and energy saving effect according to claim 1, characterized in that: The impeller (25) rotates under the drive of the second motor (24), so that the water enters the inner cavity (18) through the rotation of the impeller (25), and the blocking plate (26) is located at one end of the through hole (8), the water entering the inner cavity (18) from the through hole (8) impacts the surface of the blocking plate (26), and the swing plate (31) is located between the through hole (8) and the blocking plate (26), when the lifting ring (28) is located in the annular groove (27), the swing plate (31) is in a horizontal state, and the water impacts the surface of the blocking plate (26) under the guidance of the swing plate (31).

3. The submersible pump set with sand prevention and energy saving effect according to claim 2, characterized in that: After the lifting ring (28) moves down from the annular groove (27), the rod (32) moves down with the lifting ring (28), so that the swing plate (31) swings around the rotating shaft (34), the swing plate (31) is in an inclined state, and the end of the swing plate (31) away from the through hole (8) faces downward, the water flow in the through hole (8) flows in the direction of the annular groove (27) under the guidance of the swing plate (31).

4. The submersible pump set with sand prevention and energy saving effect according to claim 3, characterized in that: The rotating plate (21) rotates in the inner cavity (18), the mud in the water in the inner cavity (18) is located on the surface of the blocking plate (26) under the action of centrifugal force, the downward movement of the lower pressing plate (22) can drive the mud on the surface of the blocking plate (26) to move downward, and the inside of the transmission pipe (2) is provided with an impeller, the rotation of the impeller in the transmission pipe (2) makes the water in the inner cavity (18) be sucked into the water outlet (6).

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