Efficient centrifugal pump with self-cleaning impeller

Abstract

The invention relates to the technical field of centrifugal pumps, and discloses an efficient centrifugal pump capable of automatically cleaning an impeller, which solves the problem that the centrifugal pump impeller is inconvenient to automatically clean at present, and comprises a pump shell, the top of the pump shell is fixedly connected with a water outlet pipe, the bottom of the pump shell is fixedly connected with a water inlet pipe, and an impeller disc is arranged in the pump shell; a plurality of blades are evenly and fixedly connected to the outer side of the impeller disc, an inner cleaning mechanism, an outer cleaning mechanism and a cleaning mechanism are arranged in the pump shell, a driving shaft is fixedly connected to the inner side of the impeller disc, and the end, away from the impeller disc, of the driving shaft extends to the outer side of the pump shell and is fixedly connected with a driving motor; the inner cleaning mechanism comprises an inner cylinder located in the pump shell, all the blades are located on the outer side of the inner cylinder, and the inner cylinder does not make contact with the impeller disc. According to the self-cleaning impeller, water can be sprayed out from the inner through holes to wash the inner sides of the blades, and therefore self-cleaning of the impeller is facilitated.

Description

Technical Field

[0001] The invention belongs to the technical field of centrifugal pumps, in particular to a high-efficiency centrifugal pump with a self-cleaning impeller. Background Art

[0002] A centrifugal pump is a pump that transports liquid by the centrifugal force generated by the rotation of the impeller. A centrifugal pump works by using the centrifugal motion of water caused by the rotation of the impeller. Before starting the pump, the pump casing and the suction pipe must be filled with water, and then the motor is started so that the pump shaft drives the impeller and water to rotate at high speed. The water undergoes centrifugal motion and is thrown to the outer edge of the impeller and flows into the water pressure pipeline of the pump through the flow channel of the volute pump casing. The impeller is the core part of the centrifugal pump, and it has a high speed and large output force.

[0003] After the existing centrifugal pump has been working for a long time, impurities in the water are easily deposited and attached to the surface of the impeller, which is very difficult to clean. The current centrifugal pump impeller has a simple structure and does not have an automatic cleaning function. Long-term accumulation of scale will affect the normal operation of the centrifugal pump. Summary of the invention

[0004] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a high-efficiency centrifugal pump with a self-cleaning impeller, which effectively solves the current problem of inconvenience in automatically cleaning the impeller of a centrifugal pump.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a high-efficiency centrifugal pump with a self-cleaning impeller, comprising a pump casing, a water outlet pipe is fixedly connected to the top of the pump casing, a water inlet pipe is fixedly connected to the bottom of the pump casing, an impeller disc is arranged inside the pump casing, a plurality of blades are evenly fixedly connected to the outer side of the impeller disc, an inner cleaning mechanism, an outer cleaning mechanism and a cleaning mechanism are arranged inside the pump casing, a driving shaft is fixedly connected to the inner side of the impeller disc, an end of the driving shaft away from the impeller disc extends to the outer side of the pump casing and is fixedly connected to a driving motor, and a base is fixedly connected to the bottom of the driving motor;

[0006] The internal cleaning mechanism includes an inner cylinder located inside the pump casing, each blade is located on the outside of the inner cylinder, and the inner cylinder does not contact the impeller disk, two support columns are symmetrically fixedly connected between the inner cylinder and the pump casing, a support shaft is rotatably connected inside the pump casing, one end of the support shaft extends to the inside of the inner cylinder, and the support shaft is rotatably connected to the inner cylinder, a fixed cylinder located in the inner cylinder is fixedly sleeved on the outside of the support shaft, a plurality of internal stirring blades are evenly fixedly connected to the outside of the fixed cylinder, and a plurality of internal through holes are evenly arranged on the outside of the inner cylinder.

[0007] Preferably, an inner ring is provided inside the inner cylinder, and the inner ring is symmetrically fixedly connected to one end of the support shaft by two connecting columns.

[0008] Preferably, a support ring is fixedly connected to the side of the inner cylinder away from the support column, and an end of the drive shaft away from the drive motor passes through the support ring and extends into the inner cylinder, and the impeller disk and the drive shaft are not in contact with the support ring. A rotating shaft is rotatably connected to the side of the support ring away from the impeller disk, a pinion is fixedly installed on the outer side of the rotating shaft, and an internal gear is fixedly connected to the inner side of the inner ring, and the internal gear is meshingly connected to the pinion.

[0009] Preferably, a large gear is fixedly mounted on the outer side of the driving shaft, the large gear is located inside the inner cylinder, the large gear does not contact the inner gear, and the large gear is meshingly connected with the small gear.

[0010] Preferably, the external cleaning mechanism includes two semi-cylinders symmetrically fixed inside the pump casing, the impeller disk is located between the two semi-cylinders, a plurality of external through holes are evenly spaced on the side of the two semi-cylinders close to each other, a vertical plate is fixedly installed on the top of the machine base, and two driven shafts are symmetrically rotatably connected to the side of the vertical plate close to the pump casing, and the ends of the two driven shafts away from the vertical plate extend into the two semi-cylinders respectively, and a plurality of external stirring blades are fixedly connected at equal angles to the outsides of the two driven shafts, and the two groups of external stirring blades are respectively located inside the two semi-cylinders.

[0011] Preferably, driven gears are fixedly mounted on the outer sides of the two driven shafts, the driving shaft is located between the two driven shafts, a driving gear is fixedly mounted on the outer sides of the driving shafts, and the two driven gears are meshingly connected with the driving gears.

[0012] Preferably, the outer sides of the driving shaft and the two driven shafts are sleeved with sealed bearings, and each sealed bearing is arranged on the outer side of the pump housing.

[0013] Preferably, the cleaning mechanism comprises two brackets symmetrically fixed to the outer side of the impeller disc, and both brackets are provided with cleaning brushes, and both cleaning brushes are in contact with the inner wall of the pump casing.

[0014] Preferably, the cleaning brush is fixedly connected to a mounting plate, a U-shaped round rod is fixedly connected to the side of the mounting plate away from the cleaning brush, the U-shaped round rod passes through the bracket and is movably connected to the bracket, two compression springs are symmetrically fixedly connected between the mounting plate and the bracket, and the two compression springs are both mounted on the outside of the U-shaped round rod.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. The present invention facilitates the rotation of the pinion and the rotating shaft through the cooperation between the driving motor and the driving shaft and between the large gear and the pinion, and facilitates the support shaft to drive the fixed cylinder to rotate through the cooperation between the pinion and the internal gear and between the inner ring and the connecting column, which can then drive the internal stirring blades to rotate so that a small centrifugal pump is formed inside the inner cylinder, and then water can be sprayed out from each inner through hole to wash the inner side of the blade, thereby facilitating self-cleaning of the impeller.

[0017] 2. The invention facilitates the two driven shafts to drive the two sets of outer stirring blades to rotate through the cooperation between the driving motor and the driving shaft and the driving gear and the driven gear, so that a small centrifugal pump is formed in each of the two semi-cylinders, which can make water spray out from each external through hole, thereby facilitating the washing and cleaning of the outer side of the blades.

[0018] 3. The invention facilitates the close fit between the cleaning brush and the inner wall of the pump casing through the cooperation between the bracket and the mounting plate, the U-shaped round rod and the compression spring, and facilitates the rotation of the cleaning brush to clean the inside of the pump casing through the cooperation between the driving motor, the driving shaft and the impeller disk. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0020] In the attached picture:

[0021] Figure 1 It is a schematic diagram of the structure of a high-efficiency centrifugal pump with a self-cleaning impeller of the present invention;

[0022] Figure 2 This is a schematic diagram of the cross-sectional structure of the pump casing of the present invention;

[0023] Figure 3 This is a schematic diagram of the structure of the cleaning mechanism in the present invention;

[0024] Figure 4 This is a schematic diagram of the cross-sectional structure of the inner cylinder of the present invention;

[0025] Figure 5 This is a schematic diagram of the inner ring structure of the present invention;

[0026] Figure 6 This is a schematic diagram of the structure of the external cleaning mechanism of the present invention;

[0027] Figure 7 It is a schematic diagram of the cleaning mechanism structure of the present invention;

[0028] Figure 8 It is a schematic diagram of the support structure of the present invention.

[0029] In the figure: 1, pump housing; 2, internal cleaning mechanism; 201, inner cylinder; 202, support column; 203, support shaft; 204, inner stirring blade; 205, inner through hole; 206, inner ring; 207, support ring; 208, fixed cylinder; 209, large gear; 2010, inner gear; 2011, small gear; 2012, rotating shaft; 2013, connecting column; 3, external cleaning mechanism; 301, semi-cylinder; 3 02. External through hole; 303. External stirring blade; 304. Driven shaft; 305. Vertical plate; 306. Driving gear; 307. Driven gear; 4. Cleaning mechanism; 401. Bracket; 402. Cleaning brush; 403. Mounting plate; 404. U-shaped round rod; 405. Compression spring; 5. Blades; 6. Impeller disk; 7. Water outlet pipe; 8. Water inlet pipe; 9. Machine base; 10. Driving motor; 11. Driving shaft. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0031] Embodiment 1, by Figure 1-Figure 8 The present invention relates to a high-efficiency centrifugal pump with a self-cleaning impeller, comprising a pump casing 1, a water outlet pipe 7 is fixedly connected to the top of the pump casing 1, a water inlet pipe 8 is fixedly connected to the bottom of the pump casing 1, an impeller disk 6 is arranged inside the pump casing 1, a plurality of blades 5 are evenly and fixedly connected to the outer side of the impeller disk 6, an internal cleaning mechanism 2, an external cleaning mechanism 3 and a cleaning mechanism 4 are arranged inside the pump casing 1, a driving shaft 11 is fixedly connected to the inner side of the impeller disk 6, an end of the driving shaft 11 away from the impeller disk 6 extends to the outer side of the pump casing 1 and is fixedly connected to a driving motor 10, and the bottom of the driving motor 10 is fixedly connected to an organic base 9.

[0032] Embodiment 2, on the basis of embodiment 1, the internal cleaning mechanism 2 comprises an inner cylinder 201 located inside the pump casing 1, each blade 5 is located outside the inner cylinder 201, and the inner cylinder 201 does not contact the impeller disk 6, two support columns 202 are symmetrically fixedly connected between the inner cylinder 201 and the pump casing 1, a support shaft 203 is rotatably connected inside the pump casing 1, one end of the support shaft 203 extends to the inside of the inner cylinder 201, and the support shaft 203 is rotatably connected to the inner cylinder 201, a fixed cylinder 208 located inside the inner cylinder 201 is fixedly sleeved on the outside of the support shaft 203, a plurality of inner stirring blades 204 are uniformly fixedly connected to the outside of the fixed cylinder 208, a plurality of inner through holes 205 are uniformly provided on the outside of the inner cylinder 201, an inner ring 206 is provided inside the inner cylinder 201, and the inner ring 206 is symmetrically fixedly connected to one end of the support shaft 203 There are two connecting columns 2013 fixedly connected, a support ring 207 is fixedly connected to the side of the inner cylinder 201 away from the support column 202, the end of the drive shaft 11 away from the drive motor 10 passes through the support ring 207 and extends into the inner cylinder 201, the impeller disk 6 and the drive shaft 11 are not in contact with the support ring 207, the support ring 207 is rotatably connected to the side of the impeller disk 6, a small gear 2011 is fixedly installed on the outer side of the rotating shaft 2012, an internal gear 2010 is fixedly connected to the inner side of the inner ring 206, the internal gear 2010 is meshingly connected with the small gear 2011, a large gear 209 is fixedly installed on the outer side of the drive shaft 11, the large gear 209 is located inside the inner cylinder 201, the large gear 209 is not in contact with the internal gear 2010, and the large gear 209 is meshingly connected with the small gear 2011;

[0033] First, start the drive motor 10 to drive the drive shaft 11 to rotate, and drive the large gear 209 to rotate. Since the large gear 209 is meshed with the small gear 2011, the small gear 2011 and the rotating shaft 2012 are driven to rotate. Since the small gear 2011 is meshed with the internal gear 2010, the inner ring 206 is driven to rotate, and then the support shaft 203 is driven to rotate through the two connecting columns 2013. At the same time, the fixed cylinder 208 and each inner stirring blade 204 rotate, so that a small centrifugal pump is formed in the inner cylinder 201, so that water is sprayed from each inner through hole 205 to wash the inner side of the blade 5, and finally the impeller is automatically cleaned.

[0034] Embodiment 3, on the basis of embodiment 1, the external cleaning mechanism 3 comprises two semi-cylinders 301 symmetrically fixed inside the pump casing 1, the impeller disc 6 is located between the two semi-cylinders 301, a plurality of external through holes 302 are evenly spaced on the side where the two semi-cylinders 301 are close to each other, a vertical plate 305 is fixedly installed on the top of the base 9, and two driven shafts 304 are symmetrically rotatably connected to the side of the vertical plate 305 close to the pump casing 1, and the ends of the two driven shafts 304 away from the vertical plate 305 extend into the two semi-cylinders 301 respectively, and the outer sides of the two driven shafts 304 are evenly fixedly connected to the two semi-cylinders 301. A plurality of external stirring blades 303 are connected, and two groups of external stirring blades 303 are respectively located inside the two semi-cylinders 301. The outer sides of the two driven shafts 304 are fixedly installed with driven gears 307. The driving shaft 11 is located between the two driven shafts 304. The outer side of the driving shaft 11 is fixedly installed with a driving gear 306. The two driven gears 307 are meshed and connected with the driving gear 306. The outer sides of the driving shaft 11 and the two driven shafts 304 are sleeved with sealed bearings. Each sealed bearing is arranged on the outer side of the pump housing 1. By arranging the sealed bearings, the sealing performance of the pump housing 1 is ensured.

[0035] When the driving motor 10 is started, it drives the driving shaft 11 to rotate, and drives the driving gear 306 to rotate. Since the two driven gears 307 are meshed and connected with the driving gear 306, the two driven shafts 304 are driven to rotate, and the two groups of outer stirring blades 303 are driven to rotate, so that a small centrifugal pump is formed inside the two semi-cylinders 301, so that water is sprayed out from each outer through hole 302 to rinse the blade 5, and finally the outer side of the blade 5 is cleaned.

[0036] Embodiment 4, on the basis of embodiment 1, the cleaning mechanism 4 includes two brackets 401 symmetrically fixed to the outside of the impeller disk 6, the two brackets 401 are provided with cleaning brushes 402, the two cleaning brushes 402 are both in contact with the inner wall of the pump housing 1, the cleaning brush 402 is fixedly connected with a mounting plate 403, the side of the mounting plate 403 away from the cleaning brush 402 is fixedly connected with a U-shaped round rod 404, the U-shaped round rod 404 penetrates the bracket 401 and is movably connected to the bracket 401, and two compression springs 405 are symmetrically fixedly connected between the mounting plate 403 and the bracket 401, and the two compression springs 405 are both sleeved on the outside of the U-shaped round rod 404;

[0037] In the initial state, the compression spring 405 is in a compressed state, so that the cleaning brush 402 fits tightly against the inner wall of the pump casing 1 under the action of the elastic force of the compression spring 405. When the drive motor 10 is started, the drive shaft 11 is driven to rotate, and the impeller disk 6 is driven to rotate, and then the cleaning brush 402 is driven to rotate through the bracket 401, and finally the inner wall of the pump casing 1 is cleaned to prevent long-term accumulation of scale and affect the normal operation of the centrifugal pump.

Claims

1. A high-efficiency centrifugal pump with a self-cleaning impeller, comprising a pump casing (1), characterized in that: The top of the pump casing (1) is fixedly connected to a water outlet pipe (7), the bottom of the pump casing (1) is fixedly connected to a water inlet pipe (8), an impeller disc (6) is provided inside the pump casing (1), a plurality of blades (5) are evenly fixedly connected to the outer side of the impeller disc (6), an inner cleaning mechanism (2), an outer cleaning mechanism (3) and a cleaning mechanism (4) are provided inside the pump casing (1), a drive shaft (11) is fixedly connected to the inner side of the impeller disc (6), an end of the drive shaft (11) away from the impeller disc (6) extends to the outer side of the pump casing (1) and is fixedly connected to a drive motor (10), and the bottom of the drive motor (10) is fixedly connected to a base (9); The internal cleaning mechanism (2) comprises an inner cylinder (201) located inside the pump casing (1), each blade (5) is located outside the inner cylinder (201), and the inner cylinder (201) does not contact the impeller disk (6); two support columns (202) are symmetrically fixedly connected between the inner cylinder (201) and the pump casing (1); a support shaft (203) is rotatably connected inside the pump casing (1); one end of the support shaft (203) extends to the inside of the inner cylinder (201), and the support shaft (203) is rotatably connected to the inner cylinder (201); a fixed cylinder (208) located inside the inner cylinder (201) is fixedly sleeved on the outside of the support shaft (203); a plurality of internal stirring blades (204) are evenly fixedly connected to the outside of the fixed cylinder (208); and a plurality of internal through holes (205) are evenly provided on the outside of the inner cylinder (201).

2. A high-efficiency centrifugal pump with a self-cleaning impeller according to claim 1, characterized in that: An inner ring (206) is provided inside the inner cylinder (201), and the inner ring (206) is symmetrically fixedly connected to one end of the support shaft (203) by two connecting columns (2013).

3. A high-efficiency centrifugal pump with a self-cleaning impeller according to claim 1, characterized in that: A support ring (207) is fixedly connected to a side of the inner cylinder (201) away from the support column (202); an end of the drive shaft (11) away from the drive motor (10) passes through the support ring (207) and extends into the inner cylinder (201); the impeller disc (6) and the drive shaft (11) are not in contact with the support ring (207); a rotating shaft (2012) is rotatably connected to a side of the support ring (207) away from the impeller disc (6); a pinion (2011) is fixedly mounted on the outer side of the rotating shaft (2012); an internal gear (2010) is fixedly connected to the inner side of the inner ring (206); and the internal gear (2010) is meshingly connected to the pinion (2011).

4. A high-efficiency centrifugal pump with a self-cleaning impeller according to claim 1, characterized in that: A large gear (209) is fixedly mounted on the outer side of the driving shaft (11); the large gear (209) is located inside the inner cylinder (201); the large gear (209) does not contact the inner gear (2010); and the large gear (209) is meshingly connected with the small gear (2011).

5. A high-efficiency centrifugal pump with a self-cleaning impeller according to claim 1, characterized in that: The external cleaning mechanism (3) comprises two semi-cylinders (301) symmetrically fixed inside the pump casing (1); the impeller disc (6) is located between the two semi-cylinders (301); a plurality of external through holes (302) are evenly spaced on the sides of the two semi-cylinders (301) close to each other; a vertical plate (305) is fixedly mounted on the top of the machine base (9); two driven shafts (304) are symmetrically rotatably connected to the side of the vertical plate (305) close to the pump casing (1); the ends of the two driven shafts (304) away from the vertical plate (305) extend into the two semi-cylinders (301) respectively; a plurality of external stirring blades (303) are evenly fixedly connected to the outer sides of the two driven shafts (304); and the two groups of external stirring blades (303) are respectively located inside the two semi-cylinders (301).

6. A high-efficiency centrifugal pump with a self-cleaning impeller according to claim 5, characterized in that: A driven gear (307) is fixedly mounted on the outer sides of the two driven shafts (304); the driving shaft (11) is located between the two driven shafts (304); a driving gear (306) is fixedly mounted on the outer sides of the driving shaft (11); and the two driven gears (307) are meshingly connected with the driving gear (306).

7. A high-efficiency centrifugal pump with a self-cleaning impeller according to claim 1, characterized in that: The outer sides of the driving shaft (11) and the two driven shafts (304) are sleeved with sealed bearings, and each sealed bearing is arranged on the outer side of the pump housing (1).

8. A high-efficiency centrifugal pump with a self-cleaning impeller according to claim 1, characterized in that: The cleaning mechanism (4) comprises two brackets (401) symmetrically fixed to the outside of the impeller disk (6), and the two brackets (401) are each provided with a cleaning brush (402), and the two cleaning brushes (402) are both in contact with the inner wall of the pump casing (1).

9. A high-efficiency centrifugal pump with a self-cleaning impeller according to claim 8, characterized in that: The cleaning brush (402) is fixedly connected to a mounting plate (403), a U-shaped round rod (404) is fixedly connected to the side of the mounting plate (403) away from the cleaning brush (402), the U-shaped round rod (404) passes through the bracket (401) and is movably connected to the bracket (401), and two compression springs (405) are symmetrically fixedly connected between the mounting plate (403) and the bracket (401), and the two compression springs (405) are both sleeved on the outside of the U-shaped round rod (404).

Images