High-stability large-flux submersible pump

Abstract

The invention relates to a high-stability large-flux submersible pump which comprises a pump body and a pump cavity arranged at the lower end of the pump body, a water inlet is formed in the lower end of the pump cavity, a water outlet connected with the pump cavity is formed in the side end of the pump cavity, an impeller is rotationally arranged in the pump cavity, and the pump body further comprises a driving motor for driving the impeller to rotate. An anti-blocking cover is arranged at the water inlet, and a communicating hole is formed in the side, away from the water inlet, of the anti-blocking cover in a penetrating mode; a cutting-off shaft is rotationally arranged on the anti-blocking cover, at least two cutting-off blades are arranged on the cutting-off shaft, the at least two cutting-off blades are evenly distributed on the two sides of the cutting-off shaft, and the sides, used for making contact with sundries, of the cutting-off blades are cutting edges; the cutting-off shaft is connected with a rotating shaft of the impeller. The driving motor drives the cutting-off shaft to rotate. The cut-off blade cuts off the communicating hole after rotating and is matched with the inner wall of the communicating hole to cut off sundries. The cut-off blades are arranged on the outer side of the anti-blocking cover, so that the communicating holes are not prone to being blocked, and stable large-flux flow is kept.

Description

Technical Field

[0001] The present application relates to the field of water pumps, and in particular to a high-stability and large-flux submersible pump. Background Art

[0002] When the submersible pump is in use, the impeller rotates at high speed, and the liquid in it rotates with the blades. Under the action of centrifugal force, it flies away from the impeller and ejects outward. The ejected liquid gradually slows down in the diffusion chamber of the pump casing, and the pressure gradually increases, and then flows out from the pump outlet and the discharge pipe. At this time, a vacuum low-pressure area with neither air nor liquid is formed at the center of the blades because the liquid is thrown to the surroundings. Under the action of the atmospheric pressure on the surface of the pool, the liquid in the liquid pool flows into the pump cavity through the suction pipe. In this way, the liquid is continuously sucked up from the liquid pool and continuously flows out from the discharge pipe.

[0003] The invention patent application with publication number CN112943676A discloses a submersible pump, which includes a pump body, a pump cavity at the lower end of the pump body, a water inlet and a water outlet connected to the pump cavity, an impeller rotatably connected in the pump cavity, the pump body also includes a driving motor for driving the impeller to rotate, an elevated seat is provided at the lower end of the pump body, the elevated seat is staggered with the water inlet, the pump body is also provided with a filter plate, the filter plate is evenly distributed with a plurality of through holes, the filter plate is located at the water inlet for filtering the liquid passing through the water inlet, a rotating shaft is coaxially provided on the end face of the impeller close to the water inlet, the filter plate is provided with a rotating hole, the rotating shaft passes through the filter plate through the rotating hole and is rotatably connected to the filter plate, the rotating shaft is provided with a cutting blade, the cutting blade is located on the side of the filter plate away from the pump cavity, the cutting blade abuts against the filter plate, and the cutting blade cooperates with the hole wall of the through hole to cut debris.

[0004] Regarding the above technology, common debris in the water is in the form of sheets or strips, such as fibers, water plants, etc. If they cover the outer surface of the filter plate, the cutting blade cannot cut them off, the filter plate is blocked, causing the water inlet to be blocked, the water flow rate to be reduced, and affecting the use of the pump body. Summary of the invention

[0005] In order to prevent the pump body from being blocked by debris, the present application provides a high-stability and large-flow submersible pump.

[0006] The present application provides a high-stability and high-flux submersible pump, which adopts the following technical solution: A high-stability, high-flux submersible pump, comprising a pump body, a pump chamber arranged at the lower end of the pump body, a water inlet arranged at the lower end of the pump chamber, a water outlet connected to the pump chamber arranged at the side end of the pump chamber, an impeller rotatably arranged in the pump chamber, the pump body further comprising a driving motor for driving the impeller to rotate, an elevated seat arranged at the bottom of the pump body, the elevated seat and the water inlet arranged staggered, an anti-blocking cover arranged at the water inlet, and a connecting hole penetrating through the anti-blocking cover away from the water inlet; A cutting shaft is rotatably provided on the anti-blocking cover, and at least two cutting blades are provided on the cutting shaft, and the at least two cutting blades are evenly distributed on both sides of the cutting shaft, and the cutting blade has a blade on one side for contacting debris; the cutting shaft is connected to the rotating shaft of the impeller, and the driving motor drives the cutting shaft to rotate; the cutting blade cuts off the connecting hole after rotating, and the cutting blade cooperates with the inner wall of the connecting hole to cut off the debris.

[0007] By adopting the above technical solution, the cutting blade is located outside the anti-blocking cover, so that the cutting blade can cut the debris after rotating, so that the debris is not easy to block the water inlet. At the same time, after the cutting blade rotates, the outside of the connecting hole is not easy to be covered with strip-shaped and sheet-shaped debris, so that the pump body can stably maintain a large flux and the use effect is better.

[0008] Optionally, the thickness of the cutting blade decreases towards the cutting edge.

[0009] By adopting the technical solution, the cutting of debris is more convenient and the cutting effect is good.

[0010] Optionally, a tooth portion is protruding from the blade.

[0011] By adopting the above technical solution, the teeth have a certain anti-slip effect, making it easier to cut off the strip-shaped debris rather than just peeling it off. If the debris is only peeled off, it will cause the debris to be adsorbed again when the main body absorbs water. This reciprocating process will still easily affect the water flow of the pump body and cause more and more debris to accumulate at the bottom of the pump body, causing a burden on the water pumping of the main body.

[0012] Optionally, the side of the tooth portion away from the blade is a tooth blade, and the thickness of the tooth portion decreases toward the side away from the cutting blade.

[0013] By adopting the above technical solution, the tooth blade is set to be sharper, so that the tooth blade has a better effect of cutting off debris.

[0014] Optionally, the anti-blocking cover includes a mounting frame and a water-passing plate, the communicating hole is arranged on the water-passing plate; the mounting frame is provided with an adjusting groove for the water-passing plate to be embedded, the circumferential inner wall of the adjusting groove slides to contact the circumferential outer wall of the water-passing plate, the water-passing plate is slidably arranged in the adjusting groove, and the sliding direction of the water-passing plate is the direction away from or close to the cutting blade; The mounting frame is provided with an elastic member, and the elastic member drives the surface of the water-passing plate to abut against the cutting blade.

[0015] By adopting the above technical solution, the elastic member makes the water-passing plate keep close to the cutting blade, so that there is no gap between the water-passing plate and the cutting blade, and the thin and tough fiber debris is not easy to get stuck in the gap between the water-passing plate and the cutting blade and entangled on the cutting shaft to cause the cutting shaft to jam, so that the rotation of the cutting blade remains smooth. At the same time, the water-passing plate keeps close to the setting of the cutting blade, which also makes the cutting blade have a good cutting effect on the debris, and the tough limit-type debris is also easy to cut.

[0016] Optionally, the mounting frame is circumferentially provided with a plurality of protrusions, and the protrusions are penetrated by mounting holes; the protrusions are provided with a slideway on the side of the outer wall of the pump chamber, and a slider is fixed to the circumferential outer wall of the water passing plate, and the slider is slidably arranged in the slideway; the elastic member is a spring, and the spring is located in the slideway and on the side of the slider facing the pump chamber, and the end of the spring abuts the slider to drive the water passing plate to abut the cutting blade.

[0017] By adopting the above technical solution, the slideway guides the sliding of the slider, thereby guiding the sliding of the water-passing plate, so that the sliding of the water-passing plate is stable. The spring is arranged in the slideway to achieve the abutment of the water-passing plate toward the cutting blade after the circumferential force is applied, so that the water-passing plate stably abuts against the cutting blade.

[0018] Optionally, a mounting ring is provided on the circumferential edge of the water inlet, a plurality of threaded holes are provided on the mounting ring, the threaded holes are provided corresponding to the mounting holes, the mounting frame is fixed to the mounting ring by bolts, and a positioning groove for a positioning spring is provided on the mounting ring.

[0019] By adopting the above technical solution, the mounting ring provides a fulcrum for fixing the mounting frame, the threaded hole corresponds to the mounting hole, and the positioning groove faces the slide groove, which facilitates the installation of the spring. When installing the anti-blocking cover, put the spring into the positioning groove, and then install the water-passing plate on the mounting frame. The mounting frame is fixed to the mounting ring by bolts, so that the end of the spring just abuts against the slide block.

[0020] In summary, the present application includes at least one of the following beneficial technical effects: 1. The cutting blade is set on the outside of the anti-blocking cover to prevent the connecting hole from being blocked, thereby maintaining a stable large flux and making the pump body work better; 2. The thickness of the cutting blade decreases towards the blade edge, and a tooth portion is provided, and a tooth edge is provided on the tooth portion, so that debris can be easily cut off; 3. A spring is provided to make the water-passing plate contact the cutting blade, so that the cutting blade has a good cutting effect and at the same time, debris is not easy to be entangled on the cutting shaft to cause jamming. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 1 is an overall schematic diagram of a high-stability, high-flux submersible pump according to an embodiment.

[0022] Figure 2 It is a cross-sectional view of a high-stability, high-flow submersible pump according to an embodiment.

[0023] Figure 3 It is a bottom structure display diagram of a high-stability, high-flux submersible pump according to an embodiment.

[0024] Figure 4 It is a structural display diagram of the cutting blade of the embodiment.

[0025] Figure 5 It is a partial exploded view of the bottom structure of the embodiment.

[0026] Explanation of the accompanying drawings: 1. Pump body; 11. Drive motor; 12. Mounting ring; 2. Pump chamber; 21. Water inlet; 22. Water outlet pipe; 221. Water outlet; 23. Impeller; 3. Elevator seat; 4. Anti-blocking cover; 41. Mounting frame; 42. Water-passing plate; 421. Connecting hole; 422. Through hole; 423. Protrusion; 424. Mounting hole; 425. Slide; 426. Slider; 43. Cutting shaft; 5. Cutting blade; 51. Blade; 52. Tooth; 521. Tooth blade; 6. Adjustment slot; 121. Threaded hole; 7. Elastic member; 71. Spring; 8. Positioning slot. DETAILED DESCRIPTION

[0027] The present application is further described in detail below in conjunction with the accompanying drawings.

[0028] The present application embodiment discloses a high-stability and high-flux submersible pump. Figure 1 , Figure 2 The high-stability and high-flow submersible pump includes a pump body 1, a pump chamber 2 arranged at the lower end of the pump body 1, a water inlet 21 is opened at the lower end of the pump chamber 2, a water outlet pipe 22 is connected to the side end of the pump chamber 2, and one end of the water outlet pipe 22 is a water outlet 221.

[0029] Reference Figure 2 An impeller 23 is rotatably arranged in the pump chamber 2, and the pump body 1 also includes a driving motor 11 for driving the impeller 23 to rotate, and the motor shaft of the driving motor 11 is coaxially fixed with the main shaft of the impeller 23.

[0030] Install Figure 2 , Figure 3 An elevated seat 3 is provided at the bottom of the pump body 1, and the elevated seat 3 is fixed to the side of the pump chamber 2 away from the pump body 1. The elevated seat 3 is staggered with the water inlet 21. When the elevated seat 3 is supported on the ground, the water inlet 21 is supported in the air. An anti-blocking cover 4 is provided at the water inlet 21, and a mounting ring 12 is integrally formed on the circumferential edge of the water inlet 21, and the anti-blocking cover 4 is fixed on the mounting ring 12. A connecting hole 421 is formed through the anti-blocking cover 4 on the side away from the water inlet 21. External water first passes through the connecting hole 421, and then enters the pump chamber 2 from the water inlet 21. After the impeller 23 rotates, it is accelerated and discharged from the water outlet 221 through the connecting pipe.

[0031] Reference Figure 2 A cutting shaft 43 is rotatably arranged on the anti-blocking cover 4, and the end of the cutting shaft 43 is coaxially fixed with the main shaft of the impeller 23. A through hole 422 is provided on the anti-blocking cover 4 for the cutting shaft 43 to pass through, and a bearing is coaxially arranged outside the cutting shaft 43, and the bearing is located in the through hole 422, and the inner wall of the through hole 422 movably contacts the outer ring of the bearing.

[0032] Reference Figure 3 , Figure 4 The cutting shaft 43 extends to the outside of the anti-blocking cover 4, and at least two cutting blades 5 are fixed to the end of the cutting shaft 43 located outside the anti-blocking cover 4. In the embodiment, two cutting blades 5 are fixed, and the two cutting blades 5 are evenly distributed on both sides of the cutting shaft 43. The side of the cutting blade 5 for contacting the debris is a blade 51. The cutting shaft 43 is coaxially fixed with the rotating shaft of the impeller 23, and the driving motor 11 drives the cutting shaft 43 to rotate. After the cutting blade 5 rotates, the connecting hole 421 is cut off, and the cutting blade 5 cooperates with the inner wall of the connecting hole 421 to cut off the debris.

[0033] Reference Figure 4 The thickness of the cutting blade 5 decreases toward the direction approaching the blade 51, and a tooth portion 52 is protruded and integrally formed on the blade 51. The side of the tooth portion 52 away from the blade 51 is a tooth edge 521, and the thickness of the tooth portion 52 decreases toward the side away from the cutting blade 5, so that the cutting blade 5 is sharper and the cutting effect is better.

[0034] Reference Figure 5 The anti-blocking cover 4 includes a mounting frame 41 and a water-passing plate 42. A communication hole 421 is provided in the water-passing plate 42. A through hole 422 is provided at the center of the water-passing plate 42. The communication holes 421 are evenly distributed around the through hole 422. An adjustment groove 6 is provided at the center of the mounting frame 41 for the water-passing plate 42 to be embedded. The inner wall of the adjustment groove 6 slides to contact the outer wall of the water-passing plate 42. The water-passing plate 42 is slidably installed in the adjustment groove 6. The sliding direction of the water-passing plate 42 is the direction away from or close to the cutting blade 5.

[0035] Reference Figure 5 The mounting frame 41 is integrally formed with a plurality of protrusions 423 in the circumferential direction, and the protrusions 423 are penetrated with mounting holes 424. The mounting ring 12 is provided with a plurality of threaded holes 121, and the threaded holes 121 are arranged corresponding to the mounting holes 424. The mounting frame 41 is fixed to the mounting ring 12 by bolts.

[0036] Reference Figure 5, a slideway 425 is provided on the side of the convex portion 423 facing the mounting ring 12, and each convex portion 423 is provided with two slideways 425, and the slideways 425 on each convex portion 423 are located on both sides of the mounting hole 424. A slider 426 is fixed to the circumferential outer wall of the water-passing plate 42, and the slider 426 is slidably arranged in the slideway 425. An elastic member 7 is provided on the mounting frame 41, and the elastic member 7 drives the plate surface of the water-passing plate 42 to abut against the cutting blade 5. The elastic member 7 is a spring 71, and the spring 71 is located in the slideway 425 and on the side of the slider 426 facing the pump chamber 2. A positioning groove 8 for positioning the spring 71 is provided on the mounting ring 12, and the positioning groove 8 is arranged one by one corresponding to the slideway 425. One end of the spring 71 abuts against the bottom of the positioning groove 8, and the other end abuts against the slider 426 to drive the water-passing plate 42 to abut against the cutting blade 5.

[0037] The implementation principle of a high-stability and high-flux submersible pump in the embodiment of the present application is as follows: when the submersible pump is used, the pump chamber 2 of the submersible pump is placed underwater, and the driving motor 11 drives the impeller 23 and the cutting blade 5 to rotate simultaneously. After passing through the connecting hole 421, water enters the pump chamber 2 from the water inlet 21, and is discharged from the water outlet 221 after being accelerated by the impeller 23. While pumping water, debris is cut off by the cutting blade 5 when passing through the connecting hole 421, so that it is not easy to block the submersible pump. When the debris covers the connecting hole 421, it is crushed or pushed away by the cutting blade 5, which will not affect the water flow of the connecting hole 421, so that the submersible pump can stably maintain a large flux.

[0038] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A high-stability, high-flux submersible pump, comprising a pump body (1), a pump chamber (2) arranged at the lower end of the pump body (1), a water inlet (21) arranged at the lower end of the pump chamber (2), a water outlet (221) connected to the pump chamber (2) arranged at the side end of the pump chamber (2), an impeller (23) rotatably arranged in the pump chamber (2), the pump body (1) further comprising a drive motor (11) for driving the impeller (23) to rotate, characterized in that: The bottom of the pump body (1) is provided with an elevated seat (3), the elevated seat (3) and the water inlet (21) are staggered, an anti-blocking cover (4) is provided at the water inlet (21), and a communication hole (421) is penetrated through the side of the anti-blocking cover (4) away from the water inlet (21); A cutting shaft (43) is rotatably provided on the anti-blocking cover (4), and at least two cutting blades (5) are provided on the cutting shaft (43), and the at least two cutting blades (5) are evenly distributed on both sides of the cutting shaft (43), and the side of the cutting blade (5) used for contacting the debris is a blade (51); the cutting shaft (43) is connected to the rotating shaft of the impeller (23), and the driving motor (11) drives the cutting shaft (43) to rotate; the cutting blade (5) cuts off the connecting hole (421) after rotating, and the cutting blade (5) cooperates with the inner wall of the connecting hole (421) to cut off the debris.

2. The high stability and large flux submersible pump according to claim 1 is characterized in that: The thickness of the cutting blade (5) decreases towards the direction approaching the blade (51).

3. The high stability and high flux submersible pump according to claim 1, characterized in that: The blade (51) is provided with a tooth portion (52) protruding therefrom.

4. The high-stability, high-flux submersible pump according to claim 3, characterized in that: The side of the tooth portion (52) away from the blade (51) is a tooth blade (521), and the thickness of the tooth portion (52) decreases toward the side away from the cutting blade (5).

5. The high-stability, high-flux submersible pump according to claim 1, characterized in that: The anti-blocking cover (4) comprises a mounting frame (41) and a water-passing plate (42), wherein the communicating hole (421) is arranged on the water-passing plate (42); the mounting frame (41) is provided with an adjusting groove (6) for the water-passing plate (42) to be embedded, the circumferential inner wall of the adjusting groove (6) slidingly contacts the circumferential outer wall of the water-passing plate (42), the water-passing plate (42) is slidingly arranged in the adjusting groove (6), and the sliding direction of the water-passing plate (42) is a direction away from or close to the cutting blade (5); An elastic member (7) is provided on the mounting frame (41), and the elastic member (7) drives the surface of the water-passing plate (42) to abut against the cutting blade (5).

6. The high-stability, high-flux submersible pump according to claim 5, characterized in that: The mounting frame (41) is provided with a plurality of convex portions (423) in the circumferential direction, and the convex portions (423) are penetrated with mounting holes (424); a slideway (425) is provided on the convex portion (423) on the side of the outer wall of the pump chamber (2); a slider (426) is fixed on the circumferential outer wall of the water-passing plate (42), and the slider (426) is slidably arranged in the slideway (425); the elastic member (7) is a spring (71), and the spring (71) is located in the slideway (425) and on the side of the slider (426) facing the pump chamber (2); an end of the spring (71) abuts against the slider (426) to drive the water-passing plate (42) to abut against the cutting blade (5).

7. The high-stability, high-flux submersible pump according to claim 6, characterized in that: A mounting ring (12) is provided on the circumferential edge of the water inlet (21), a plurality of threaded holes (121) are provided on the mounting ring (12), the threaded holes (121) are provided corresponding to the mounting holes (424), the mounting frame (41) is fixed to the mounting ring (12) by bolts, and a positioning groove (8) for a positioning spring (71) is provided on the mounting ring (12).

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