CN111102204A

CN111102204A - Cutting type guide sewage pump

Info

Publication number: CN111102204A
Application number: CN202010022757.6A
Authority: CN
Inventors: 朱维富; 徐里林; 何尹; 龚星光
Original assignee: Zhejiang Fengmin Pump Co Ltd
Current assignee: Zhejiang Fengmin Pump Co Ltd
Priority date: 2020-01-09
Filing date: 2020-01-09
Publication date: 2020-05-05

Abstract

The invention discloses a cutting type guide sewage pump which has the characteristics of power consumption saving, high lift and high overall efficiency, the technical scheme is that the device comprises a motor, a pump head, a pump middle section and a bottom foot, wherein the motor, the pump head, the pump middle section and the bottom foot are sequentially connected from top to bottom, a pump shaft is arranged in the motor, an impeller arranged in the pump head is arranged on the pump shaft, a cutting disc is arranged below the bottom foot, a cutting blade arranged on the outer side of the cutting disc is arranged at the lower end of the pump shaft, the impeller comprises an upper cover plate, a lower cover plate and a main blade arranged between the upper cover plate and the lower cover plate, wherein a shaft sleeve matched with a pump shaft is arranged on the upper cover plate, a water inlet ring is arranged on the lower cover plate, a lower blade is further arranged on the lower surface of the lower cover plate, a separation panel is arranged at the upper end of the middle section of the pump, a water through hole opposite to the water inlet ring is formed in the separation panel, and a first guide block arranged in the water inlet ring is arranged at the upper end of the water through hole.

Description

Cutting type guide sewage pump

Technical Field

The invention belongs to the technical field of sewage pumps, and particularly relates to a cutting type guide sewage pump.

Background

The cutting type sewage pump can tear, cut off and smoothly discharge long fibers, bags, belts, grass, cloth strips and other substances in sewage, and is particularly suitable for conveying liquid containing hard solids and fibrous substances and particularly dirty, sticky and slippery liquid, but the existing sewage pump in the market generally has the defects of poor cutting effect, rotation blockage, low lift, easy blockage and the like, for example, the content disclosed in the application No. CN201610036433.1, at least three cutting knives are required to cut sewage in order to achieve the effect of no winding and no blockage, and the cutting knives are wearing parts, so that the manufacturing cost and the maintenance cost of the water pump are greatly improved; and the semi-open impeller structure is adopted, so that the pump lift is low when the pump is used, and the efficiency is difficult to reach the national standard; therefore, a completely new design is made based on the above-described problems.

Disclosure of Invention

The invention aims to provide a cutting type guide sewage pump which has the characteristics of power consumption saving, high lift and high overall efficiency.

The purpose of the invention is realized as follows: the utility model provides a cutting formula guide dredge pump, includes motor, pump head, pump middle section and footing, and motor, pump head, pump middle section and footing from top to bottom connect gradually, are equipped with the pump shaft in the motor, are equipped with the impeller of arranging in the pump head on the pump shaft, and the footing below is equipped with the cutting disc, and the pump shaft lower extreme is equipped with the cutting blade of arranging the cutting disc outside in, its characterized in that: the impeller comprises an upper cover plate, a lower cover plate and a main blade arranged between the upper cover plate and the lower cover plate, wherein a shaft sleeve matched with the pump shaft is arranged on the upper cover plate, a water inlet ring is arranged on the lower cover plate, a lower blade is further arranged on the lower surface of the lower cover plate, a separation panel is arranged at the upper end of the middle section of the pump, a water through hole right opposite to the water inlet ring is arranged on the separation panel, and a first guide block arranged in the water inlet ring is arranged at the upper end of the water through hole.

The invention is further configured to: the pump head includes the pump chamber of annular structure, with the blowdown runner of pump chamber tangential intercommunication, still is equipped with in the pump head and arranges in pump chamber and blowdown runner connecting end and be used for the scattered guide dispersion piece of filth guide, forms guide runner and dispersion runner between the chamber wall of guide dispersion piece and pump chamber.

The invention is further configured to: and a groove-shaped flow passage is also arranged on the inner wall of the pump cavity and is positioned in the dispersion flow passage.

The invention is further configured to: the partition panel is provided with an upper convex ring on the upper end face, a flow guide surface is formed between the inner wall of the upper convex ring and the upper surface of the partition panel, the upper end face of the partition panel is also provided with a mouth ring groove matched with the water inlet ring, and the inner wall of the water passing hole is provided with a sand leakage mouth communicated with the mouth ring groove.

The invention is further configured to: and a second guide block connected with the main blade is also arranged in the impeller.

The invention is further configured to: the cutting dish includes that the multiunit is the inlet channel of hoop equipartition, and every group inlet channel all includes two outer arc runners and an interior arc runner, outer arc runner and interior arc runner all include cutting initiating terminal and cutting end, and the width of outer arc runner and the width of interior arc runner reduce to the cutting end by cutting initiating terminal gradually.

The invention is further configured to: the cutting knife comprises a main body part and a cutting part, wherein the main body part is connected with the pump shaft, the cutting part is connected with the main body part, and the cutting part comprises a short-distance cutting edge and an extended long-distance cutting edge which are of an arc-shaped structure.

The invention is further configured to: be equipped with the first elastic washer of axial conflict between cutting knife and the pump shaft, through threaded connection between cutting knife and the pump shaft, the lower extreme of pump shaft still is equipped with the fastening nut who is used for locking the cutting knife.

The invention is further configured to: and a second elastic washer which is axially abutted is further arranged between the impeller and the pump shaft, and an adjusting nut for axially fixing the impeller is arranged on the pump shaft.

The invention is further configured to: the centrifugal pump is characterized in that a water thrower arranged above the impeller is further arranged on the pump shaft, the water thrower is fixedly connected with the pump shaft in the circumferential direction, and a plurality of centrifugal blades are arranged on the periphery of the water thrower at equal intervals.

By adopting the technical scheme, the method has the following main advantages: the impeller is combined by a centrifugal closed impeller and an open impeller, and the advantages of high lift, high efficiency and difficult sand clamping and leakage prevention of the open impeller are utilized, so that the efficiency of the whole machine is improved;

through the structural arrangement of the upper cavity of the middle section of the pump and the first guide block, cut objects can be fully dispersed and cut off and quickly merged into the impeller, and through the arrangement of the opening ring groove, the sand leakage opening and the flow guide surface, the effects of preventing leakage and sand blocking can be achieved;

the guide dispersion block and the groove-shaped flow channel are additionally arranged in the pump head, so that when sewage and dirt pass through the sewage discharge flow channel, the guide dispersion block and the groove-shaped flow channel are matched with each other, so that the cut dirt is guided back and forth and smoothly enters the dirt discharge port to be discharged, the phenomenon that the sundries are wound and the pump head is blocked is prevented, and the lift is increased;

through the matching design of the novel cutting disc and the cutting knife, the motor load can be effectively reduced, the energy consumption is reduced, the cutting effect is good, dirt can be cut to a shorter length at one time, and the dirt is prevented from being wound to block a pump head;

overall speaking, adopt novel structural design, utilize the mode of guide to reach the effect of unblock, no stifled commentaries on classics, and have power consumptive province, characteristics that the lift is high, overall efficiency relative national standard can promote more than 20%.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the structure of FIG. 1 taken along line A-A of the present invention;

FIG. 3 is a schematic structural view of the upper cover plate side of the impeller in the present invention;

FIG. 4 is a schematic structural view of the lower cover plate side of the impeller in the present invention;

FIG. 5 is a schematic view of the construction of the middle section of the pump of the present invention;

FIG. 6 is a schematic view of the pump head of the present invention;

FIG. 7 is a schematic view of the structure of the cutting disk of the present invention;

FIG. 8 is a schematic view of the construction of the cutting blade of the present invention;

FIG. 9 is a schematic view of the water slinger of the present invention;

the reference numbers in the figures are: 1. a motor; 2. a pump head; 3. a pump middle section; 4. footing; 5. a pump shaft; 6. an impeller; 8. cutting the disc; 9. a cutting knife; 10. an upper cover plate; 11. a lower cover plate; 12. a main blade; 13. a shaft sleeve; 14. a water inlet ring; 16. a lower blade; 17. a partition panel; 18. water passing holes; 19. a first guide block; 20. a pump chamber; 21. a blowdown flow channel; 22. guiding the dispersion blocks; 23. a guide flow channel; 24. a dispersion flow channel; 25. a trough-shaped flow channel; 26. an upper convex ring; 27. a flow guide surface; 28. a mouth ring groove; 29. a sand leakage opening; 30. a second guide block; 31. an outer arcuate runner; 32. an inner arc-shaped flow passage; 33. cutting the starting end; 34. cutting the end; 35. a main body portion; 36. cutting edges at a short distance; 37. cutting edges at a long distance; 38. a first resilient gasket; 39. fastening a nut; 40. a second resilient gasket; 41. adjusting the nut; 42. a hydro-extracting cage; 43. and (4) centrifuging the blades.

Detailed Description

The invention will be further described in the following with reference to specific embodiments thereof, with reference to the accompanying drawings, in which figures 1 to 9:

the utility model provides a cutting formula guide dredge pump, includes motor 1, pump head 2, pump middle section 3 and footing 4, and motor 1, pump head 2, pump middle section 3 and footing 4 from top to bottom connect gradually, are equipped with pump shaft 5 in the motor 1, are equipped with the impeller 6 of arranging in pump head 2 on the pump shaft 5, and footing 4 below is equipped with cutting disc 8, and 5 lower extremes of pump shaft are equipped with the cutting knife 9 pieces of arranging the 8 outsides of cutting disc in, its characterized in that: the impeller 6 comprises an upper cover plate 10, a lower cover plate 11 and a main blade 12 arranged between the upper cover plate 10 and the lower cover plate 11, wherein a shaft sleeve 13 matched with the pump shaft 5 is arranged on the upper cover plate 10, a water inlet ring 14 is arranged on the lower cover plate 11, a lower blade 16 is arranged on the lower surface of the lower cover plate 11, a separation panel 17 is arranged at the upper end of the middle section 3 of the pump, a water through hole 18 right opposite to the water inlet ring 14 is arranged on the separation panel 17, and a first guide block 19 arranged in the water inlet ring 14 is arranged at the upper end of the water through hole 18.

The main body part 35 of the impeller 6 adopts a closed structure, and has the advantages of high lift and high efficiency, the lower surface of the lower cover plate 11 is provided with the lower blade 16, the lower end of the impeller 6 is provided with the open lower blade 16 which is matched with the flow guide surface 27 on the pump middle section 3, and outward centrifugation can be generated during rotation, so that the problems of leakage and sand blocking between the impeller 6 and the pump middle section 3 are solved, the lift can be improved, and the purpose of improving the overall efficiency is achieved; first guide block 19 and pump middle section 3 are integrated into one piece structure, have the guide surface that the slope set up on the first guide block 19, are convenient for guide the filth in impeller 6 fast, and have great appearance chamber space in the pump middle section 3, can make by the cutting thing fully disperse the disconnection in holding the chamber, guarantee evenly to get into in the impeller 6.

Wherein 6 whole stainless steel that can adopt of impeller, each part can be through welded fastening, low in production cost and life height.

The pump head comprises a pump cavity 20 with a ring-shaped structure and a sewage discharge flow channel 21 communicated with the pump cavity 20 in a tangential direction, a guide dispersion block 22 which is arranged at the connecting end of the pump cavity 20 and the sewage discharge flow channel 21 and used for guiding and dispersing sewage is also arranged in the pump head, and a guide flow channel 23 and a dispersion flow channel 24 are formed between the guide dispersion block 22 and the cavity wall of the pump cavity 20.

The guide flow passage 23 is directly communicated with the sewage flow passage 21 and is used for rapidly guiding sewage and dirt in the pump cavity 20 into the sewage flow passage 21; the dispersing flow channel 24 may be a single channel and located on the upper side or the lower side of the guiding dispersing block 22, and the dispersing flow channels 24 may also be two channels and located on the upper side and the lower side of the guiding dispersing block 22 respectively; if the sewage is too much, the sewage flows through the guide dispersion block 22, most of the sewage is quickly guided into the sewage discharge channel 21, the lift can be increased, and a small part of the sewage is dispersed into the dispersion channel 24 to be re-circulated in the pump cavity 20, so that the sewage is prevented from being blocked at the connection part of the sewage discharge channel 21 and the pump cavity 20.

The inner wall of the pump cavity 20 is also provided with a groove-shaped flow channel 25, the groove-shaped flow channel 25 is positioned in the dispersion flow channel 24, the groove-shaped flow channel 25 is communicated with the sewage discharge flow channel 21, and sewage entering the dispersion flow channel 24 can reenter the sewage discharge flow channel 21 through the groove-shaped flow channel 25, so that the outward discharge of the sewage and the sewage is ensured.

The concrete principle of the pump head is as follows: when liquid and impurities in sewage are mixed and enter the pump cavity 20, under the action of the guide dispersion block 22, part of the impurities can be separated from the liquid along the inclined surface of the guide dispersion block 22, the liquid is discharged along the guide flow channel 23 and the sewage discharge flow channel 21, the impurities separated along the inclined surface can re-enter the sewage discharge flow channel 21 through the dispersion flow channel 24 and the groove-shaped flow channel 25, the sewage and the impurities can be effectively prevented from being directly blocked at the connecting end of the sewage discharge flow channel 21 and the pump cavity 20 in a dispersion guide mode, and meanwhile, the end part of the guide dispersion block 22 is of a sharp-angled structure, so that the lift loss of the liquid in the pump cavity 20 can be reduced, and therefore, the design of the guide dispersion block 22 inherits the high efficiency of the traditional pump head and solves the problem that the traditional pump head.

An upper convex ring 26 is arranged on the upper end face of the separation panel 17, a flow guide surface 27 which is obliquely arranged is formed between the inner wall of the upper convex ring 26 and the upper surface of the separation panel 17, an opening ring groove 28 which is matched with the water inlet ring 14 is also arranged on the upper end face of the separation panel 17, and a sand leakage opening 29 which is communicated with the opening ring groove 28 is arranged on the inner wall of the water through hole 18.

The upper convex ring 26 is used for clamping with the lower end of the pump head 2, so that the stability is improved; when the impeller 6 rotates, outward centrifugal water flow can be formed on the upper surface of the separation panel 17, and sewage and dirt remained on the upper surface of the panel are conveyed into the pump head 2 through the flow guide surface 27, so that the function of preventing sand from being blocked is achieved; the impeller 6 port ring groove 28 is used for being installed and matched with the impeller 6 port ring, so that a leakage-proof effect is achieved between the impeller 6 port ring and the water through holes 18, and the pump lift and the pump efficiency are improved; the sand leakage port 29 is relatively small in size, so that sand and sand impurities in the pump head 2 can be conveniently discharged downwards without affecting leakage, and sand blocking is prevented.

The impeller 6 is also internally provided with a second guide block 30 connected with the main blade 12, and the second guide block 30 is positioned at one end of the main blade 12 close to the water inlet ring 14 and is used for further guiding the dirt so that the dirt can rapidly pass through the impeller 6.

The width of the second guide block 30 is smaller than that of the main blade 12, and the width of the second guide block 30 gradually increases from one end far away from the main blade 12 to one end close to the second guide block 30, that is, the side of the second guide block 30 opposite to the water inlet ring 14 is an inclined surface, so that when sewage and dirt axially enter from the water inlet ring 14, a better drainage effect can be achieved.

Cutting dish 8 includes that the multiunit is the inlet channel of hoop equipartition, and every group inlet channel all includes two outer arc runners 31 and an interior arc runner 32, outer arc runner 31 and interior arc runner 32 all include cutting initiating terminal 33 and cutting end 34, and the width of outer arc runner 31 and the width of interior arc runner 32 reduce gradually to cutting end 34 by cutting initiating terminal 33.

The cutting disc 8 is arranged on the bottom surface of the bottom foot 4, the cutting disc 8 is provided with a plurality of short arc-shaped flow channels which are designed to be double-flow channels inside and outside, so that the entering area of sewage and dirt can be increased, the length of a cut object can be shortened, the cut object can smoothly enter the middle section 3 of the pump, the winding and blocking phenomena of sundries are prevented, and the safe and reliable operation of equipment is ensured; in the cutting process, the cutting knife 9 slides from the cutting starting end 33 with larger width to the cutting tail end 34 with smaller width gradually, so that the load of the motor 1 can be reduced.

The cutting knife 9 comprises a main body part 35 connected with the pump shaft 5 and a cutting part connected with the main body part 35, wherein the cutting part comprises a short-distance cutting edge 36 with an arc structure and an extended long-distance cutting edge 37.

During cutting, the more the cut object is close to the center of the cutting knife 9, the larger the torque borne by the pump shaft 5 is, in order to ensure that the power of the pump is more stable, the short-distance cutting edge 36 close to the main body part 35 adopts an arc structure, the length of the cutting edge is prolonged during rotation, and the cutting edge can be cut in advance with the outer arc wall of the outer arc runner 31 and the outer arc wall of the inner arc runner 32, so that the cutting force is dispersed, and the purposes of reducing the load of the motor 1, improving the cutting effect and delaying the service life of the cutting knife 9 are achieved; wherein the remote cutting edge 37 is used to increase the cutting area and its curvature may be gradually gentle.

By adopting the structure, the gap between the cutting knife 9 and the cutting disc 8 can be adjusted by adjusting the screwing force between the cutting knife 9 and the pump shaft 5, and the gap can be adjusted according to the actual use environment to achieve the optimal cutting effect; the lower end of the pump shaft 5 is also provided with a fastening nut 39 for locking the cutting knife 9, so that the cutting knife 9 can be better fixed.

Still be equipped with the second elastic washer 40 that the axial is contradicted between impeller 6 and the pump shaft 5, be equipped with the adjusting nut 41 that is used for axial fixity impeller 6 on the pump shaft 5, adopt above-mentioned structure, can be through screwing adjusting nut 41 or loosening adjusting nut 41 to adjust the interval between separation panel 17 on impeller 6 and the pump middle section 3, make it under the service environment of difference, can adjust, make it reach optimum leak protection, sand blocking prevention effect.

The pump shaft 5 is also provided with a water slinger 42 arranged above the impeller 6, the water slinger 42 is fixedly connected with the pump shaft 5 in the circumferential direction, and the periphery of the water slinger 42 is provided with a plurality of centrifugal blades 43 which are arranged at equal intervals.

The hydro-extracting cage 42 and the pump shaft 5 can be in key connection, and the centrifugal blades 43 enable the hydro-extracting cage 42 to generate an outward centrifugal force when rotating, so that sundries are further prevented from being wound on the pump shaft 5.

Overall speaking, adopt novel structural design, utilize the mode of guide to reach the effect of unblock, no stifled commentaries on classics, and have power consumptive province, characteristics that the lift is high, obtain through many times of tests, the overall efficiency of pump can promote more than 20% than national standard.

The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.

Claims

1. The utility model provides a cutting formula guide dredge pump, including motor (1), pump head (2), pump middle section (3) and footing (4), motor (1), pump head (2), pump middle section (3) and footing (4) from top to bottom connect gradually, be equipped with pump shaft (5) in motor (1), be equipped with impeller (6) of arranging in pump head (2) on pump shaft (5), footing (4) below is equipped with cutting disc (8), pump shaft (5) lower extreme is equipped with cutting knife (9) of arranging in the cutting disc (8) outside, its characterized in that: impeller (6) include upper cover plate (10), lower apron (11), arrange upper cover plate (10) and main blade (12) between apron (11) down in, be equipped with on upper cover plate (10) with axle sleeve (13) of pump shaft (5) adaptation, be equipped with water inlet ring (14) on apron (11) down, the lower surface of apron (11) still is equipped with down blade (16) down, the upper end of pump middle section (3) is equipped with partition panel (17), be equipped with on partition panel (17) with water inlet ring (14) just right water hole (18) of crossing, it is equipped with first guide block (19) of arranging in water inlet ring (14) to cross water hole (18) upper end.

2. A cut-type guide dredge pump of claim 1, wherein: the pump head comprises a pump cavity (20) with a circumferential structure and a sewage drainage flow channel (21) communicated with the pump cavity (20) in a tangential direction, a guide dispersion block (22) which is arranged at the connecting end of the pump cavity (20) and the sewage drainage flow channel (21) and used for guiding and dispersing sewage is further arranged in the pump head, and a guide flow channel (23) and a dispersion flow channel (24) are formed between the guide dispersion block (22) and the wall of the pump cavity (20).

3. A cut-type guide dredge pump of claim 2, wherein: the inner wall of the pump cavity (20) is also provided with a groove-shaped flow passage (25), and the groove-shaped flow passage (25) is positioned in the dispersion flow passage (24).

4. A cut-type guide dredge pump of claim 1, wherein: be equipped with bulge loop (26) on separating panel (17) upper end face, go up the water conservancy diversion face (27) that form the slope setting between the inner wall of bulge loop (26) and the upper surface of separating panel (17), still be equipped with on separating panel (17) upper end face with mouthful ring groove (28) of water inlet ring (14) adaptation, be equipped with on the inner wall of crossing water hole (18) leak husky mouth (29) with mouthful ring groove (28) intercommunication.

5. A cut-type guide dredge pump of claim 3, wherein: and a second guide block (30) connected with the main blade (12) is also arranged in the impeller (6).

6. A cut-type guide dredge pump of claim 1, wherein: cutting dish (8) are the inlet flow way of hoop equipartition including the multiunit, and every group inlet flow way all includes two outer arc runners (31) and an interior arc runner (32), outer arc runner (31) and interior arc runner (32) all include cutting initiating terminal (33) and cutting end (34), and the width of outer arc runner (31) and the width of interior arc runner (32) reduce gradually to cutting end (34) by cutting initiating terminal (33).

7. The cut-type guide dredge pump of claim 6, wherein: the cutting knife (9) comprises a main body part (35) connected with the pump shaft (5) and a cutting part connected with the main body part (35), wherein the cutting part comprises a short-distance cutting edge (36) with an arc-shaped structure and an extended long-distance cutting edge (37).

8. A cut-type guide dredge pump of claim 1, wherein: be equipped with first elastic washer (38) of axial conflict between cutting knife (9) and pump shaft (5), through threaded connection between cutting knife (9) and pump shaft (5), the lower extreme of pump shaft (5) still is equipped with fastening nut (39) that are used for locking cutting knife (9).

9. A cut-type guide dredge pump of claim 1, wherein: and a second elastic washer (40) which is axially abutted is further arranged between the impeller (6) and the pump shaft (5), and an adjusting nut (41) which is used for axially fixing the impeller (6) is arranged on the pump shaft (5).

10. A cut-type guide dredge pump of claim 1, wherein: the centrifugal pump is characterized in that a water thrower (42) arranged above the impeller (6) is further arranged on the pump shaft (5), the water thrower (42) is fixedly connected with the pump shaft (5) in the circumferential direction, and a plurality of centrifugal blades (43) are arranged on the periphery of the water thrower (42) at equal intervals.