Combined energy-saving strong self-priming pump

Abstract

The invention discloses a combined energy-saving strong self-priming pump, which belongs to the field of water pumps and comprises a support, a pump body and a water inlet pipe are arranged on the support, a first flange is fixedly mounted at the input end of the pump body, and a second flange is fixedly mounted at the end part of the water inlet pipe; a mounting frame is fixedly mounted in the first flange, an elastic corrugated pipe is fixedly mounted on the mounting frame, the elastic corrugated pipe extends into the water inlet pipe, and a shrinking mechanism for shrinking the elastic corrugated pipe is fixedly mounted on the mounting frame; through mutual cooperation of the elastic corrugated pipe, the pressure release valve and the capacity expansion groove, under the action of the elastic corrugated pipe in the stretching state, the gas content in the water inlet pipe is reduced, therefore, the pump body can rapidly extract gas in the space between the elastic corrugated pipe and the inner wall of the water inlet pipe, the gas extraction time of the pump body is shortened, and the working efficiency of the pump body is improved. The corrosion degree of an impeller in the pump body caused by flowing of a gas-liquid mixture is relieved, meanwhile, under the action of the elastic corrugated pipe, the pumping time of the pump body can be shortened, and the pump body can rapidly pump water.

Description

Technical Field

[0001] The present invention relates to the field of water pumps, and more specifically, to a combined energy-saving and strong self-priming pump. Background Art

[0002] A self-priming pump belongs to a self-priming centrifugal pump, which has the advantages of compact structure, convenient operation, stable operation, easy maintenance, high efficiency, long service life, and strong self-priming ability. The pipeline does not need to install a foot valve, and only a certain amount of priming liquid needs to be stored in the pump body before work. The working principle of the self-priming pump is that the pump is filled with water in the pump casing before starting (or there is water in the pump casing itself). After starting, the impeller rotates at a high speed, and the water flow in the impeller channel flows towards the volute. At this time, a vacuum is formed at the inlet, which opens the inlet check valve, and the air in the suction pipe enters the pump and reaches the outer edge through the impeller channel.

[0003] In the prior art, traditional centrifugal self-priming pumps mainly rely on the impeller to pump air to achieve the self-priming function, and manual priming operation must be carried out before starting. Under the condition of high-lift working conditions, the motor is in a full-load running state for a long time to complete the air pumping work, resulting in low energy utilization efficiency and significant energy waste. In addition, the two-phase mixed flow of gas and liquid will aggravate the cavitation phenomenon on the impeller surface, thereby accelerating the corrosion loss of the impeller material and seriously affecting the overall service life of the pump body.

[0004] Therefore, a combined energy-saving and strong self-priming pump is proposed. Summary of the Invention

[0005] Aiming at the problems existing in the prior art, the purpose of the present invention is to provide a combined energy-saving and strong self-priming pump, which can shorten the air pumping time of the self-priming pump, save costs, and reduce energy waste.

[0006] To solve the above problems, the present invention adopts the following technical solutions.

[0007] The combined energy-saving and strong self-priming pump includes a bracket, on which a pump body and a water inlet pipe are provided. A first flange is fixedly installed at the input end of the pump body, and a second flange is fixedly installed at the end of the water inlet pipe;

[0008] An installation frame is fixedly installed inside the first flange, an elastic corrugated pipe is fixedly installed on the installation frame, the elastic corrugated pipe extends into the water inlet pipe, and a contraction mechanism for contracting the elastic corrugated pipe is fixedly installed on the installation frame;

[0009] A pressure relief valve is fixedly installed on the side wall of the elastic corrugated pipe, and the output end of the pressure relief valve penetrates through the first flange and communicates with the outside;

[0010] An expansion groove is formed on the inner wall of the first flange;

[0011] One end of the water inlet pipe away from the pump body is fixedly installed with a filter cylinder; a shovel plate is slidably installed in the filter cylinder, and a first driving mechanism for driving the shovel plate to move is arranged in the water inlet pipe.

[0012] Further, the contraction mechanism includes a winding roller rotatably inserted on the mounting frame;

[0013] An inner pipe is arranged in the elastic corrugated pipe. The inner pipe is an elastic pipe and penetrates through the end wall of the elastic corrugated pipe close to one end of the mounting frame and the mounting frame;

[0014] A connecting rope is commonly installed between the end wall of the inner pipe away from the mounting frame and the winding roller, and a second driving mechanism for driving the winding roller to rotate is arranged in the filter cylinder.

[0015] Further, the second driving mechanism includes a first propeller fixedly installed at the end of the winding roller.

[0016] Further, the second driving mechanism includes a rotating rod rotatably installed in the filter cylinder. A connecting rod is commonly installed between the rotating rod and the shovel plate, and a second propeller is fixedly sleeved on the rotating rod. The second propeller is located at the part between the connecting rod and the mounting frame.

[0017] Further, a diversion groove is formed on the side wall of the shovel plate away from the rotating rod, and a pressurizing mechanism for pressurizing the diversion groove is arranged in the filter cylinder.

[0018] Further, the pressurizing mechanism includes a mounting cavity formed on the end face of the rotating rod away from the mounting frame. A water bag is arranged in the mounting cavity. An inlet valve with an output end communicated with the water bag is fixedly installed on the outer wall of the rotating rod. A drain valve is fixedly installed on the output end of the water bag, and the output end of the drain valve extends into the diversion groove.

[0019] Further, a reciprocating lead screw is fixedly installed on the end face of the mounting cavity close to the mounting frame. A slider is threadedly installed on the reciprocating lead screw. Two ends of the water bag are respectively fixedly connected with the slider and the end wall of the mounting cavity. The end face of the reciprocating lead screw is rotationally matched with the side wall of the filter cylinder. A guide rod is fixedly installed on the inner side wall of the filter cylinder, and the slider is movably sleeved on the guide rod.

[0020] Further, the elastic corrugated pipe includes a metal corrugated pipe and a spring. Two ends of the spring are respectively fixedly connected with the inner side walls of two ends of the metal corrugated pipe.

[0021] Further, an impact block made of an elastic material is fixedly installed at one end of the elastic corrugated pipe away from the mounting frame, and the impact block is matched with the end face of the rotating rod.

[0022] Further, a cavity is formed in the impact block, and holes are uniformly formed in the side wall of the cavity.

[0023] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0024] (1) Through the mutual cooperation of the mounting frame, elastic corrugated pipe, pressure relief valve, and expansion tank, under the action of the elastic corrugated pipe in the extended state, the gas content in the water inlet pipe is reduced. Therefore, the pump body can quickly extract the gas in the space between the elastic corrugated pipe and the inner wall of the water inlet pipe, shortening the air extraction time of the pump body, reducing the corrosion degree of the impeller in the pump body caused by the flow of gas-liquid mixture, playing a role in protecting the impeller of the pump body. At the same time, under the action of the elastic corrugated pipe, the air extraction time of the pump body can be shortened, enabling the pump body to quickly carry out the water pumping work, playing a role in cost savings.

[0025] (2) In this solution, the second driving mechanism drives the scraper plate to make a circular motion, and the connecting rod drives the scraper plate to move along the inner wall of the filter cylinder, so that the impurities attached to the inner wall of the filter cylinder can be removed, ensuring that water can enter the filter cylinder normally. Therefore, when a specified amount of water needs to be pumped, the working time can be shortened, playing an energy-saving role.

[0026] (3) Through the mutual cooperation of the diversion groove and the pressurizing mechanism, during the process of the scraper plate making a circular motion along with the connecting rod, its movement trajectory forms a dynamic shearing effect with the filter cylinder, which can effectively cut off the impurities entering through the holes in the cylinder wall. The high-pressure water flow generated by the pressurizing mechanism is directionally transported through the diversion groove, forcing the water to penetrate from the inner wall of the filter cylinder to the outside. This high-pressure permeating flow has a strong fluid impact on the impurities embedded in the holes, and finally strips the blockage from the holes and discharges it. This self-cleaning mechanism can continuously maintain the permeability of the filter cylinder, ensuring that the water inlet pipe always maintains a stable fluid suction performance. Description of the Drawings

[0027] Figure 1 is the overall structural schematic diagram of the present invention;

[0028] Figure 2 is the combined sectional structural schematic diagram of the water inlet pipe, first flange, second flange, and filter cylinder of the present invention;

[0029] Figure 3 is of the present invention Figure 2 the enlarged structural schematic diagram at A in;

[0030] Figure 4 is of the present invention Figure 2 the enlarged structural schematic diagram at B in;

[0031] Figure 5 is the sectional structural schematic diagram of the first flange of the present invention;

[0032] Figure 6 is the sectional structural schematic diagram of the filter cylinder of the present invention;

[0033] Figure 7 is the top view structural schematic diagram of the present invention.

[0034] Description of reference numerals in the figure:

[0035] 1. Bracket; 2. Pump body; 3. Water inlet pipe; 4. First flange; 5. Second flange; 6. Mounting frame; 7. Elastic corrugated pipe; 701. Metal corrugated pipe; 702. Spring; 8. Pressure relief valve; 9. Expansion tank; 10. Filter cartridge; 11. Winding roller; 12. Inner pipe; 13. Connecting rope; 14. First propeller; 15. Rotating rod; 16. Connecting rod; 17. Second propeller; 18. Flow guide groove; 19. Installation cavity; 20. Water bag; 21. Water inlet valve; 22. Drain valve; 23. Reciprocating lead screw; 24. Slide block; 25. Guide rod; 26. Impact block; 27. Cavity; 28. Hole; 29. Shovel plate. Specific embodiments

[0036] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0037] Embodiment 1:

[0038] Please refer to Figures 1 to 7 , a combined energy-saving and strong self-priming pump, including a bracket 1, on which a pump body 2 and a water inlet pipe 3 are provided. A first flange 4 is fixedly installed at the input end of the pump body 2, and a second flange 5 is fixedly installed at the end of the water inlet pipe 3. The first flange 4 and the second flange 5 are connected by screws, so that the water inlet pipe 3 is communicated with the input end of the pump body 2;

[0039] An installation frame 6 is fixedly installed inside the first flange 4. An elastic corrugated pipe 7 made of metal is fixedly installed on the installation frame 6. The elastic corrugated pipe 7 extends into the water inlet pipe 3, and a contraction mechanism for contracting the elastic corrugated pipe 7 is fixedly installed on the installation frame 6;

[0040] A pressure relief valve 8 is fixedly installed on the side wall of the elastic corrugated pipe 7. The output end of the pressure relief valve 8 penetrates through the first flange 4 and is communicated with the outside;

[0041] An expansion tank 9 is opened on the inner wall of the first flange 4; when the elastic corrugated pipe 7 is in a contracted state, the elastic corrugated pipe 7 occupies the internal space of the first flange 4. By providing the expansion tank 9, the water flow can smoothly pass through the first flange 4;

[0042] A filter cartridge 10 is fixedly installed at the end of the water inlet pipe 3 away from the pump body 2; a shovel plate 29 is slidably installed inside the filter cartridge 10, and a first driving mechanism for driving the shovel plate 29 to move is provided inside the water inlet pipe 3.

[0043] Filter impurities in water through the filter cartridge 10 to prevent impurities in the water from being sucked into the pump body 2, which plays a role in protecting the components inside the pump body 2.

[0044] The contraction mechanism includes a winding roller 11 rotatably inserted on the mounting frame 6;

[0045] An inner tube 12 is provided inside the elastic bellows 7. The inner tube 12 is an elastic tube, and the inner tube 12 penetrates through the end wall of the elastic bellows 7 near the mounting frame 6 and the mounting frame 6;

[0046] A connecting rope 13 is jointly installed between the end wall of the inner tube 12 far from the mounting frame 6 and the winding roller 11. A second driving mechanism for driving the winding roller 11 to rotate is provided inside the filter cartridge 10.

[0047] The second driving mechanism includes a first propeller 14 fixedly installed at the end of the winding roller 11.

[0048] First, fix the bracket 1 obliquely on the river bank and fix the first flange 4 and the second flange 5 together. At this time, the elastic bellows 7 is in a natural stretched state and extends into the water inlet pipe 3. At this time, the elastic bellows 7 occupies the internal space of the water inlet pipe 3. At the same time, the water inlet pipe 3 extends into the river water.

[0049] Then, inject water into the pump body 2 and start the pump body 2. At this time, the pump body 2 pumps air through the impeller, and the gas in the water inlet pipe 3 is pumped out, so that the river water can be squeezed into the water inlet pipe 3 under the action of the external atmospheric pressure.

[0050] And under the action of the elastic bellows 7 in the stretched state, the gas content in the water inlet pipe 3 is reduced. Therefore, the pump body 2 can quickly pump out the gas in the space between the elastic bellows 7 and the inner wall of the water inlet pipe 3, shortening the air pumping time of the pump body 2 and reducing the corrosion degree of the impeller in the pump body 2 caused by the flow of the gas-liquid mixture, which plays a role in protecting the impeller of the pump body 2.

[0051] At the same time, under the action of the elastic bellows 7, the air pumping time of the pump body 2 can be shortened, enabling the pump body 2 to quickly carry out the pumping work, which plays a role in saving costs.

[0052] When the gas between the side wall of the elastic bellows 7 and the inner wall of the water inlet pipe 3 is pumped out and the pump body 2 starts to absorb water, the water flow passes through the first flange 4, and the water flow passing through the first flange 4 impacts the first propeller 14. The first propeller 14 under the impact of the water flow rotates and drives the winding roller 11 to rotate, so that the connecting rope 13 can be gradually wound around the winding roller 11.

[0053] During the winding process of the connecting rope 13, the connecting rope 13 pulls the elastic corrugated pipe 7 to contract. At this time, the pressure relief valve 8 exhausts air outward through the conduit until the elastic corrugated pipe 7 contracts to the maximum extent, thereby increasing the water flow rate in the water inlet pipe 3, playing a role in ensuring that the pump body 2 can normally absorb water through the water inlet pipe 3.

[0054] And during the contraction process of the elastic corrugated pipe 7, a low-pressure environment can also be provided in the water inlet pipe 3, and this low-pressure environment can also enable the water inlet pipe 3 to absorb water from the water source, playing a role in ensuring that the pump body 2 can work normally.

[0055] Among them, under the action of the inner pipe 12, the elastic corrugated pipe 7 is sealed.

[0056] Among them, the conventional centrifugal self-priming pump relies on the impeller to pump air and needs to be filled with water before starting, which is the prior art and will not be elaborated here.

[0057] As Figure 2 shown, the second driving mechanism includes a rotating rod 15 rotatably installed in the filter cylinder 10. A connecting rod 16 is jointly installed between the rotating rod 15 and the shovel plate 29, and a second propeller 17 is fixedly sleeved on the rotating rod 15. The second propeller 17 is located at the part between the connecting rod 16 and the mounting frame 6.

[0058] The water flow flowing along the water inlet pipe 3 impacts the second propeller 17. The impacted second propeller 17 rotates. During the rotation of the second propeller 17, the shovel plate 29 is driven by the connecting rod 16 to move along the inner wall of the filter cylinder 10, so as to be able to remove the impurities adhering to the inner wall of the filter cylinder 10, playing a role in ensuring that the water flow can normally enter the filter cylinder 10. Therefore, when a specified amount of water needs to be pumped, the working time can be shortened, playing an energy-saving role.

[0059] As Figure 2 、 Figure 6 shown, a diversion groove 18 is formed on the side wall of the shovel plate 29 away from the rotating rod 15, and a pressurizing mechanism for pressurizing the diversion groove 18 is provided in the filter cylinder 10.

[0060] During the process of the shovel plate 29 making a circular motion along with the connecting rod 16, its motion trajectory forms a dynamic shearing effect with the filter cylinder 10, which can effectively cut off the impurities entering through the holes 28 in the cylinder wall. At the same time, the coverage of the inner surface of the filter cylinder 10 by the shovel plate 29 forms a local sealing area, significantly reducing the external water flow penetration rate in this area. Under this working condition, the high-pressure water flow generated by the pressurizing mechanism is directionally conveyed through the diversion groove 18, forcing the water flow to penetrate from the inner wall of the filter cylinder 10 to the outside. This high-pressure permeating flow generates a strong fluid impact on the impurities embedded in the holes 28, and finally peels off and discharges the blockage from the holes 28. This self-cleaning mechanism can continuously maintain the permeability of the filter cylinder 10 and ensure that the water inlet pipe 3 always maintains a stable fluid suction performance.

[0061] As Figure 4 shown, the pressing mechanism includes an installation cavity 19 opened on the end face of the rotating rod 15 away from the mounting frame 6. A water bag 20 is arranged in the installation cavity 19. An inlet valve 21 with an output end communicated with the water bag 20 is fixedly installed on the outer wall of the rotating rod 15. A drain valve 22 is fixedly installed on the output end of the water bag 20, and the output end of the drain valve 22 extends into the diversion groove 18.

[0062] A reciprocating lead screw 23 is fixedly installed on the end face of the installation cavity 19 close to the mounting frame 6. A slider 24 is threadedly installed on the reciprocating lead screw 23. Two ends of the water bag 20 are respectively fixedly connected with the slider 24 and the end wall of the installation cavity 19. The end face of the reciprocating lead screw 23 is rotationally matched with the side wall of the filter cylinder 10. Therefore, the reciprocating lead screw 23 can rotate freely without being affected. A guide rod 25 is fixedly installed on the inner side wall of the filter cylinder 10, and the slider 24 is movably sleeved on the guide rod 25. Therefore, the rotation of the slider 24 can be restricted by the guide rod 25, playing a role in ensuring that the slider 24 can only make reciprocating motion along the reciprocating lead screw 23.

[0063] By driving the reciprocating lead screw 23 to rotate through the rotating rod 15, the slider 24 can be made to make reciprocating motion along the reciprocating lead screw 23.

[0064] During the movement of the slider 24, the slider 24 intermittently presses the water bag 20. When the water bag 20 is pressed, the water in the water bag 20 is discharged through the drain valve 22 and flows into the diversion groove 18, thus playing a role in supplying water to the diversion groove 18.

[0065] When the slider 24 stretches the water bag 20 during the movement, the water bag 20 absorbs clean water from the filter barrel 10 through the inlet valve 21, playing a role in enabling the water bag 20 to work continuously.

[0066] As Figure 3 shown, the elastic corrugated pipe 7 includes a metal corrugated pipe 701 and a spring 702. Two ends of the spring 702 are respectively fixedly connected with the inner side walls of two ends of the metal corrugated pipe 701.

[0067] Among them, the metal corrugated pipe 701 is a flexible tubular element made of thin-walled metal. Its unique corrugated structure enables it to generate elastic deformation in a specified direction, while maintaining excellent sealing performance and pressure-bearing capacity. It is a prior art and will not be elaborated here.

[0068] As Figure 3As shown in the figure, an impact block 26 made of elastic material is fixedly installed at one end of the elastic bellows 7 away from the mounting bracket 6. The impact block 26 cooperates with the end face of the rotating rod 15. After the pumping is completed and the water flow stops impacting the first propeller 14, the winding roller 11 can rotate freely. At this time, the elastic bellows 7 in the contracted state resumes its original shape and drives the first propeller 14 to rotate in reverse. During the process of the elastic bellows 7 stretching and resuming its original shape, the elastic bellows 7 drives the impact block 26 to impact the end of the rotating rod 15. At this time, the impact force is transmitted to the filter cylinder 10, so that the filter cylinder 10 is subjected to the impact force. Through the impact force, the impurities on the surface of the filter cylinder 10 are impacted and dropped, which plays a role in automatically cleaning the filter cylinder 10. For a self-priming pump that pumps water regularly at a specified position, there is no need to disassemble it frequently. Therefore, when it works again, it ensures that the water inlet pipe 3 can absorb water normally without increasing the power of the pump body 2, which plays an energy-saving role.

[0069] As Figure 3 shown, a cavity 27 is formed in the impact block 26, and holes 28 are uniformly formed in the side wall of the cavity 27. When the impact block 26 impacts the filter cylinder 10, the cavity 27 is squeezed, and at this time, the water in the cavity 27 is discharged through the holes 28. Therefore, the filter cylinder 10 can drain water outward, thereby increasing the impact force on the impurities attached to the surface of the filter cylinder 10 and improving the cleaning effect on the filter cylinder 10.

[0070] The above is only a preferred specific embodiment of the present invention; however, the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its improved concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A combined energy-saving strong self-priming pump, comprising a bracket (1), a pump body (2) and a water inlet pipe (3) being arranged on the bracket (1), a first flange (4) being fixedly mounted on the input end of the pump body (2), and a second flange (5) being fixedly mounted on the end of the water inlet pipe (3); Features: A mounting frame (6) is fixedly mounted inside the first flange (4), an elastic bellows (7) is fixedly mounted on the mounting frame (6), the elastic bellows (7) extends into the water inlet pipe (3), and a contraction mechanism for contracting the elastic bellows (7) is fixedly mounted on the mounting frame (6); A pressure relief valve (8) is fixedly mounted on the side wall of the elastic bellows (7), and the output end of the pressure relief valve (8) passes through the first flange (4) and is in communication with the outside; An expansion groove (9) is provided on the inner wall of the first flange (4); A filter cartridge (10) is fixedly mounted on one end of the water inlet pipe (3) away from the pump body (2); a shovel plate (29) is slidably mounted in the filter cartridge (10), and a first driving mechanism for driving the shovel plate (29) to move is provided in the water inlet pipe (3).

2. The combined energy-saving strong self-priming pump according to claim 1 is characterized in that: The retracting mechanism comprises a reeling roller (11) rotatably inserted on the mounting frame (6); An inner tube (12) is provided inside the elastic bellows (7), and the inner tube (12) is an elastic tube. The inner tube (12) penetrates the end wall of the elastic bellows (7) close to one end of the mounting frame (6) and the mounting frame (6); A connecting rope (13) is installed between the end wall of the inner tube (12) away from the mounting frame (6) and the winding roller (11), and a second driving mechanism for driving the winding roller (11) to rotate is provided in the filter cartridge (10).

3. The combined energy-saving strong self-priming pump according to claim 2 is characterized in that: The second driving mechanism comprises a first propeller (14) fixedly mounted on the end of the winding roller (11).

4. The combined energy-saving strong self-priming pump according to claim 3 is characterized in that: The second driving mechanism comprises a rotating rod (15) rotatably mounted in the filter cartridge (10), a connecting rod (16) being mounted between the rotating rod (15) and the shovel plate (29), and a second propeller (17) being fixedly sleeved on the rotating rod (15), the second propeller (17) being located between the connecting rod (16) and the mounting frame (6).

5. The combined energy-saving strong self-priming pump according to claim 4 is characterized in that: A guide groove (18) is provided on the side wall of the shovel plate (29) away from the rotating rod (15), and a pressurizing mechanism for pressurizing the guide groove (18) is provided in the filter cartridge (10).

6. The combined energy-saving strong self-priming pump according to claim 5 is characterized in that: The pressurizing mechanism comprises a mounting cavity (19) formed on an end surface of a rotating rod (15) away from the mounting frame (6), a water bag (20) being arranged in the mounting cavity (19), a water inlet valve (21) whose output end is connected to the water bag (20) being fixedly mounted on the outer wall of the rotating rod (15), a water discharge valve (22) being fixedly mounted on the output end of the water bag (20), and the output end of the water discharge valve (22) extending into the guide groove (18).

7. The combined energy-saving strong self-priming pump according to claim 6 is characterized in that: A reciprocating screw (23) is fixedly mounted on the end surface of the installation cavity (19) close to one end of the installation frame (6); a slider (24) is threadedly mounted on the reciprocating screw (23); the two ends of the water bag (20) are respectively fixedly connected to the slider (24) and the end wall of the installation cavity (19); the end surface of the reciprocating screw (23) is rotatably matched with the side wall of the filter cartridge (10); a guide rod (25) is fixedly mounted on the inner side wall of the filter cartridge (10); and the slider (24) is movably sleeved on the guide rod (25).

8. The combined energy-saving strong self-priming pump according to claim 1 is characterized in that: The elastic bellows (7) comprises a metal bellows (701) and a spring (702), and two ends of the spring (702) are respectively fixedly connected to the inner side walls at two ends of the metal bellows (701).

9. The combined energy-saving strong self-priming pump according to claim 8 is characterized in that: An impact block (26) made of elastic material is fixedly mounted on one end of the elastic bellows (7) away from the mounting frame (6), and the impact block (26) cooperates with the end surface of the rotating rod (15).

10. The combined energy-saving strong self-priming pump according to claim 9 is characterized in that: The impact block (26) is provided with a cavity (27), and holes (28) are evenly provided on the side wall of the cavity (27).

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