CN112145442A

CN112145442A - Adjustable wear-resisting anticorrosive dredge pump

Info

Publication number: CN112145442A
Application number: CN202011149880.0A
Authority: CN
Inventors: 潘波; 潘红英; 潘帅帅
Original assignee: Shandong Xinchuan Mining Electromechanical Equipment Co ltd
Current assignee: Shandong Xinchuan Mining Electromechanical Equipment Co ltd
Priority date: 2020-10-23
Filing date: 2020-10-23
Publication date: 2020-12-29

Abstract

The invention discloses an adjustable wear-resistant and corrosion-resistant sewage pump, which relates to the technical field of sewage pumps and comprises a motor and an impeller, wherein the motor comprises a motor shell, a rotor and a stator winding, the rotor and the stator winding are positioned in the motor shell, the rotor is provided with a rotor shaft, the lower end of the rotor shaft is detachably connected with the impeller, the adjustable wear-resistant and corrosion-resistant sewage pump further comprises a water pressurizing chamber, a lower pump cover and a plurality of adjusting screws, the water pressurizing chamber is of a flat barrel structure, the center of the bottom surface of the water pressurizing chamber is provided with a central hole, the water pressurizing chamber is detachably connected below the motor shell, the impeller is arranged in the water pressurizing chamber, the bottom of the impeller extends out of the central hole, the lower pump cover is arranged below the impeller, the upper surface. The adjustable lower pump cover structure is adopted, the working gap between the impeller and the lower pump cover is ensured, the adjustment is convenient, the structure is simple, the service life is long, the sealing performance is good, and the safety performance is high.

Description

Adjustable wear-resisting anticorrosive dredge pump

Technical Field

The invention relates to the technical field of sewage pumps, in particular to an adjustable wear-resistant anticorrosive sewage pump.

Background

The sewage pump is a pump product which is connected with a motor into a whole and used for conveying solid-liquid mixed liquid containing solid particles, fibers and the like, can tear and cut off substances such as long fibers, woven bags, waterweeds, cloth strips and the like in sewage and then smoothly discharge the substances, along with the continuous development and progress of urban construction and environmental protection industry, the application of the sewage pump is more and more extensive, the sewage pump is used for conveying mixed sewage containing suspended solid particles such as silt, coal slag, fibers and the like or liquid with certain corrosivity in industrial departments such as coal mines, metallurgy, electric power and the like or places with gas, flammability and explosiveness, the impeller is in a severe working environment for a long time and is extremely easy to be worn and damaged, and can be broken when serious, so that safety accidents are caused, and the impeller sometimes can be worn and sealed untight due to poor sealing or too long service time in the working process, the sewage pump motor has the advantages that liquid such as sewage enters the inside of the sewage pump motor, certain damage is caused to the sewage pump, normal use of the sewage pump is affected, the sewage pump motor has higher requirements on the aspects of service life, operation efficiency, safety and reliability and the like of the sewage pump, and the sewage pump is required to be resistant to abrasion of solid-phase objects and corrosion.

Disclosure of Invention

The invention aims to solve the technical problem of providing an adjustable wear-resistant anti-corrosion sewage pump which is adjustable in structure, long in service life, good in sealing effect, high in safety and simple in structure.

In order to solve the technical problems, the invention provides the following technical scheme:

the utility model provides an adjustable wear-resisting anticorrosive dredge pump, including motor and impeller, the motor includes motor casing, rotor and stator winding are located motor casing, the rotor is provided with the rotor shaft, the connection impeller can be dismantled to the rotor shaft lower extreme, still include the pumping chamber, lower pump cover and a plurality of adjusting screw, the pumping chamber is the flat barrel structure, and the bottom surface center is provided with the centre bore, the connection can be dismantled in motor casing below to the pumping chamber, the impeller sets up in the pumping chamber, and the bottom stretches out outside the centre bore, lower pump cover sets up in the impeller below, lower pump cover upper surface is the spill structure, the impeller bottom is located the spill structure, a plurality of adjusting screw intervals set up between pumping chamber and lower pump cover, and be used for adjusting the interval of pumping chamber and lower pump cover.

Adopt above-mentioned structure, the impeller is located the pumping chamber inside, has greatly improved the ability of passing through of sewage, impeller and lower pump cover adopt the appearance structure of mutually supporting, guarantee that the working gap between lower pump cover and the impeller is even, and lower pump cover passes through adjusting screw to be connected on the pumping chamber, because of the increase of impeller wearing and tearing cause working gap, the accessible is adjusted the mounted position of pump cover on adjusting screw and is eliminated, guarantees the work efficiency of impeller, prolongs the life of dredge pump.

Preferably, a plurality of threaded blind holes are uniformly formed in the bottom plane of the pumping chamber along the circumference, a flange plate is arranged on the lower surface of the lower pump cover, a plurality of mounting holes are formed in the flange plate, the adjusting screw penetrates through the mounting holes and is screwed into the threaded blind holes, and adjusting nuts are respectively arranged on the upper surface and the lower surface of the flange plate on the adjusting screw. The adjustment mode of the adjusting screw and the double nuts is adopted, and the adjustment is convenient and simple.

Preferably, the impeller includes integrated into one piece's impeller main part and a plurality of blade, and impeller main part one side is the frustum protrusion, and the opposite side is the taper recess, and a plurality of blades are even and the protrusion setting is in impeller main part protrusion side, and the blade is clockwise arcuation along impeller main part center and disperses the distribution, forms the runner between the adjacent blade. Adopt integrated into one piece impeller, guarantee impeller intensity, whole frustum type structure and arcuation blade are arranged, can effectively reduce the rivers resistance, reduce blade load, reduce rivers disorder, and work is steady, promotes impeller work efficiency.

Preferably, the concave structure of the lower pump cover is matched with the impeller frustum in a protruding mode, the surface of the concave structure is coated with nitrile rubber, and the inner side of the pumping chamber is coated with nitrile rubber. The mode of coating nitrile rubber is adopted, and the wear-resisting and corrosion-resisting properties of the lower pump cover and the pumping chamber are improved.

Preferably, the upper bearing seat is detachably connected to the upper portion of the motor shell, the lower bearing seat is detachably connected to the lower portion of the motor shell, and the rotor shaft is installed on the upper bearing seat and the lower bearing seat through bearings. The bearing can make the rotor shaft move steadily, reduces the friction of the rotor shaft, prolongs the service life, and the upper bearing seat and the lower bearing seat isolate the motor from the outside to form an independent closed space, thereby ensuring the safety of the motor.

Preferably, an inner lining plate is arranged between the lower bearing seat and the pumping chamber and is positioned above the impeller, the inner lining plate is of a stainless steel coated nitrile rubber structure, the wear-resisting and corrosion-resisting properties of the inner lining plate are enhanced, and the sealing reliability between the lower bearing seat and the pumping chamber is ensured.

Preferably, still include the base, the base passes through a plurality of base bolt fastening at motor casing lower extreme, and the base is stainless steel drum structure, is provided with a plurality of evenly distributed's filtration hole on the base periphery, is provided with the baffle on the inside bottom surface of base. The cylindrical base is integrally sleeved outside the pumping chamber, the impeller and the lower pump cover, the filtering holes in the circumferential surface of the base can effectively isolate large impurities in sewage, and the partition plate in the base can prevent water flow in the base from forming vortex, so that the working efficiency of the sewage pump is ensured.

Preferably, a plurality of through holes are uniformly distributed on the bottom plane of the pressurized-water chamber along the circumference, the through holes and the threaded blind holes are arranged in a staggered and crossed mode, the number of the through holes is equal to that of the threaded blind holes, and a base bolt connects the pressurized-water chamber with the motor shell by penetrating through the through holes from bottom to top. The pressurized-water chamber and the base can be simultaneously installed by utilizing the base bolt, and the installation holes are arranged in a staggered and crossed manner, so that the interference condition can be avoided during installation.

Preferably, a thermosensitive element is arranged in the stator winding, a wiring terminal is arranged in a cavity on the upper portion of the upper bearing seat, and the thermosensitive element is electrically connected with the wiring terminal. The working temperature of the motor is monitored by using the thermosensitive element, so that the safety of the motor is ensured.

Preferably, the outside of the motor shell is detachably connected with a flow guide cover, and the flow guide cover is detachably connected with a water outlet pipe. The cavity between the motor shell and the air guide sleeve is utilized to cluster water flow, so that the water flow can be effectively discharged from the water outlet pipe.

Finally, the adjustable lower pump cover structure is adopted, the working gap between the impeller and the lower pump cover is ensured, the adjustment is convenient, the structure is simple, the service life is long, the sealing performance is good, and the safety performance is high.

Drawings

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

FIG. 2 is an enlarged view taken at A of FIG. 1 in accordance with the present invention;

FIG. 3 is a schematic view of the impeller structure of the present invention;

FIG. 4 is a schematic view of a base structure according to the present invention.

In the figure: 1. adjusting the nut; 2. adjusting the screw rod; 3. a base; 4. a lower pump cover; 5. an impeller; 6. an inner liner plate; 7. a base bolt; 8. a water pumping chamber; 9. mechanical sealing; 10. a lower bearing seat; 11. a bearing; 12. a water outlet pipe; 13. a thermosensitive element; 14. a carrying handle; 15. an upper bearing seat; 16. a wiring terminal; 17. a wiring cavity cover; 18. a cable outlet pipe; 19. pressing a cable sleeve; 20. a cable; 21. a pod; 22. a stator winding; 23. a rotor; 24. a rotor shaft; 25. a motor housing; 26. oil drain screws; 27. a mechanical seal seat; 28. A filtration pore; 29. a partition plate; 30. An impeller body; 31. a blade.

Detailed Description

To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings.

Referring to the attached drawings, the adjustable wear-resistant and corrosion-resistant sewage pump comprises a motor and an impeller 5, wherein the motor comprises a motor shell 25, a rotor 23 and a stator winding 22, the rotor 23 and the stator winding 22 are positioned inside the motor shell 25, a rotor shaft 24 is machined in the center of the rotor 23, an upper bearing seat 15 is fixed above the motor shell 25 through bolts, a lower bearing seat 10 is fixed below the motor shell 25 through bolts, O-shaped sealing rings are respectively installed on matching surfaces between the upper bearing seat 15, the lower bearing seat 10 and the motor shell 25, the rotor shaft 24 is installed on the upper bearing seat 15 and the lower bearing seat 10 through a bearing 11, the rotor shaft 24 penetrates through the lower bearing seat 10, the impeller 5 is detachably connected to the lower end of the rotor shaft 24, key grooves are respectively machined in the impeller 5 and the rotor shaft 24, and the impeller;

the pump also comprises a pressurized water chamber 8, a lower pump cover 4 and a plurality of adjusting screws 2, wherein the pressurized water chamber 8 is processed into a flat barrel-shaped structure, a center hole is processed in the center of the bottom surface, the inner side of the pressurized water chamber 8 is coated with nitrile rubber for improving the wear-resisting and corrosion-resisting properties of the pressurized water chamber 8, the same number of threaded blind holes and through holes are uniformly processed on the bottom plane of the pressurized water chamber 8 along the circumference, the threaded blind holes and the through holes are arranged in a staggered and crossed mode to avoid interference, a base bolt 7 penetrates through the through holes to fasten the pressurized water chamber 8 on a motor shell 25, an impeller 5 is positioned in the pressurized water chamber 8, the bottom of the impeller 5 extends out of the center hole, the adjusting screws 2 are screwed in the threaded blind holes, the lower pump cover 4 is installed below the impeller 5, the upper surface of the lower pump cover 4 is processed into a concave structure, the lower, the adjusting device is fixed by two adjusting nuts 1 which are screwed on the adjusting screw rods 2 and are positioned at the upper and lower surfaces of the flange plate.

In the structure, 8 inboard adoption cladding nitrile rubber's of pumping chamber, promote 8 wear-resisting corrosion resisting property of pumping chamber, lower pump cover 4 suit is on adjusting screw 2, confirm the mounted position through two adjusting nut 1 about the ring flange, impeller 5 is after wearing and tearing appear in long-time work, the working gap increase between impeller 5 and the lower pump cover 4, cause the pump efficiency to reduce, at this moment, accessible adjusting nut 1, finely tune down the position of pump cover 4 on adjusting screw 2, eliminate the working gap that increases because of impeller 5 wearing and tearing, make the working gap reach the initial value of pump, promote pump work efficiency, increase pump life, use bearing 11 can make rotor shaft 24 move steadily, reduce the friction of rotor shaft 24, prolong rotor shaft 24 life, adopt O type seal ring to seal, prevent that water or steam from getting into inside the motor, guarantee the safety of motor.

Referring to the attached drawings, the impeller 5 comprises an impeller main body 30 and a plurality of blades 31 which are integrally formed, one side of the impeller main body 30 is a frustum protrusion, the other side of the impeller main body is a conical groove, the plurality of blades 31 are uniformly arranged on the protrusion side of the impeller main body 30 in a protruding mode, the blades 31 are distributed in a clockwise arc-shaped dispersing mode along the center of the impeller main body 30, a flow channel is formed between every two adjacent blades 31, the frustum protrusion of the impeller 5 is matched with a concave structure on the upper surface of the lower pump cover 4, and the surface of the concave structure is coated with nitrile rubber for improving the wear-resisting. Impeller 5 integrated into one piece has guaranteed impeller 5's intensity, and whole frustum type structure and arcuation blade 31 arrange, can effectively reduce the rivers resistance, reduce blade 31 load, reduce rivers disorder, and work is steady, promotes impeller 5 work efficiency.

Referring to the attached drawings, an inner lining plate 6 is arranged between a lower bearing pedestal 10 and a pumping chamber 8, the inner lining plate 6 is positioned above an impeller 5, the inner lining plate 6 is of a stainless steel coated nitrile rubber structure, the wear-resisting and corrosion-resisting performance of the inner lining plate 6 is enhanced, and the sealing reliability between the lower bearing pedestal 10 and the pumping chamber 8 is ensured.

Referring to the attached drawings, a base 3 is fixed on a base bolt 7 through threads and is positioned at the lower end of a motor shell 25, the base 3 is used for placing and supporting the whole pump, the base 3 is of a stainless steel cylinder structure, a plurality of uniformly distributed filter holes 28 are formed in the circumferential surface of the base 3, and a partition plate 29 is arranged on the bottom surface inside the base 3. The cylindrical base 3 is integrally sleeved outside the pumping chamber 8, the impeller 5 and the lower pump cover 4, the filtering holes 28 on the circumferential surface of the base 3 can effectively isolate large impurities in sewage, and the partition plate 29 in the base 3 can prevent water flow from forming vortex when the impeller 5 works, so that the working efficiency of the pump is ensured.

Referring to the attached drawings, the upper portion of an upper bearing seat 15 is of a cavity structure, a wiring terminal 16 is installed in the cavity, a wiring cavity cover 17, a cable leading-out tube 18 and a cable pressing sleeve 19 are sequentially connected to the upper portion of the upper bearing seat 15, the wiring cavity cover 17 is fastened to the upper portion of the upper bearing seat 15 through bolts, the cable leading-out tube 18 is fixed to the upper portion of the wiring cavity cover 17 through bolts, the cable pressing sleeve 19 is sleeved inside the cable leading-out tube 18, a cable 20 penetrates through the wiring cavity cover 17, the cable leading-out tube 18 and the inside of the cable pressing sleeve 19 and is connected to the wiring terminal 16, a thermosensitive element 13 is arranged inside a stator winding 22, and the thermosensitive element 13 is electrically.

Referring to the attached drawings, a diversion cover 21 is detachably connected to the outside of a motor shell 25, a water outlet pipe 12 is detachably connected to the diversion cover 21, an external pipeline of the water outlet pipe 12 is used for discharging sewage, a carrying handle 14 is installed on an upper bearing seat 15, the carrying handle 14 is fastened through threads, the pump is convenient to hoist and carry, a cavity structure is processed inside a lower bearing seat 10, the cavity is used as a sealing oil chamber, two mechanical seals 9 are adopted on the contact surface of the sealing oil chamber and a rotor shaft 24, the tightness of the seal is guaranteed, the sealing oil chamber is prevented from leaking, the mechanical seals 9 are fixed through a mechanical seal seat 27 installed on the lower bearing seat 10, oil adding and discharging holes communicated with the sealing oil chamber are symmetrically processed on the motor shell 25 and used for adding lubricating oil into the sealing oil chamber, and oil adding and.

It should be noted that, in the embodiment of the present invention, the adjusting nut 1, the mechanical seal 9, the bearing 11, the heat sensitive element 13, the connection terminal 16, the cable 20, the stator winding 22, the rotor 23, the oil drain screw 26 and the O-ring are all applied in the prior art.

In the description of this patent, it is to be understood that the terms "upper," "lower," "inner," "outer," "center," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the patent and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the patent.

In this patent, unless expressly stated or limited otherwise, the terms "combined," "disposed," "connected," "secured," and the like are intended to be inclusive and mean, for example, that they may be fixedly connected, releasably connected, or integral; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate, or they may be connected internally or in an interactive relationship with each other, and unless otherwise specifically limited, the specific meaning of the above terms in this patent will be understood by those skilled in the art according to the specific circumstances.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. An adjustable wear-resistant and corrosion-resistant sewage pump, comprising a motor and an impeller (5), wherein the motor comprises a motor shell (25), a rotor (23) and a stator winding (22), the rotor (23) and the stator winding (22) are positioned in the motor shell (25), the rotor (23) is provided with a rotor shaft (24), the lower end of the rotor shaft (24) is detachably connected with the impeller (5), and the adjustable wear-resistant and corrosion-resistant sewage pump is characterized in that: still include pressurized-water chamber (8), lower pump cover (4) and a plurality of adjusting screw (2), pressurized-water chamber (8) are the flat barrel structure, and the bottom surface center is provided with the centre bore, connect in motor casing (25) below can be dismantled in pressurized-water chamber (8), impeller (5) set up in pressurized-water chamber (8), and the bottom stretches out outside the centre bore, lower pump cover (4) set up impeller (5) below, pump cover (4) upper surface is the spill structure down, impeller (5) bottom is located in the spill structure, it is a plurality of adjusting screw (2) interval sets up pressurized-water chamber (8) with between lower pump cover (4), be used for adjusting pressurized-water chamber (8) with the interval of pump cover (4) down.

2. The adjustable wear-resistant corrosion-resistant sewage pump of claim 1, wherein: the hydraulic pump is characterized in that a plurality of threaded blind holes are uniformly formed in the bottom plane of the pressurized water chamber (8) along the circumference, a flange plate is arranged on the lower surface of the lower pump cover (4), a plurality of mounting holes are formed in the flange plate, the adjusting screw (2) penetrates through the mounting holes and is screwed into the threaded blind holes, and adjusting nuts (1) are respectively arranged on the upper surface and the lower surface of the adjusting screw (2) which are positioned on the flange plate.

3. The adjustable wear-resistant corrosion-resistant sewage pump according to claim 1 or 2, wherein: impeller (5) are including integrated into one piece's impeller main part (30) and a plurality of blade (31), impeller main part (30) one side is the frustum protrusion, and the opposite side is the taper recess, and is a plurality of even and protrusion setting of blade (31) is in impeller main part (30) protrusion side, and blade (31) are clockwise arcuation along impeller main part (30) center and diverge the distribution, form the runner between adjacent blade (31).

4. The adjustable wear-resistant corrosion-resistant sewage pump of claim 3, wherein: the lower pump cover (4) is concave and matched with the impeller (5) in a frustum protruding mode, the surface of the concave structure is coated with nitrile rubber, and the inner side of the pumping chamber (8) is coated with nitrile rubber.

5. The adjustable wear-resistant corrosion-resistant sewage pump of claim 4, wherein: an upper bearing seat (15) is detachably connected to the upper portion of the motor shell (25), a lower bearing seat (10) is detachably connected to the lower portion of the motor shell (25), and the rotor shaft (24) is installed on the upper bearing seat (15) and the lower bearing seat (10) through a bearing (11).

6. The adjustable wear-resistant corrosion-resistant sewage pump of claim 5, wherein: an inner lining plate (6) is arranged between the lower bearing seat (10) and the pumping chamber (8), the inner lining plate (6) is positioned above the impeller (5), and the inner lining plate (6) is of a stainless steel coated nitrile rubber structure.

7. An adjustable wear resistant corrosion resistant dredge pump of any of claims 1, 2, 4, 5, 6, characterized by: still include base (3), base (3) are fixed through a plurality of base bolts (7) motor casing (25) lower extreme, base (3) are stainless steel drum structure, are provided with a plurality of evenly distributed's filtration hole (28) on base (3) periphery, are provided with baffle (29) on the inside bottom surface of base (3).

8. The adjustable wear-resistant corrosion-resistant sewage pump of claim 7, wherein: a plurality of through holes are uniformly distributed on the bottom plane of the pressurized-water chamber (8) along the circumference, the through holes and the threaded blind holes are arranged in a staggered and crossed mode, the number of the through holes is equal to that of the threaded blind holes, and the base bolt (7) penetrates through the through holes from bottom to top to connect the pressurized-water chamber (8) and the motor shell (25).

9. The adjustable wear-resistant corrosion-resistant sewage pump according to claim 1 or 8, wherein: a thermosensitive element (13) is arranged in the stator winding (22), a wiring terminal (16) is arranged in a cavity in the upper portion of the upper bearing seat (15), and the thermosensitive element (13) is electrically connected with the wiring terminal (16).

10. The adjustable wear resistant corrosion resistant dredge pump of claim 9 wherein: the motor shell (25) is detachably connected with a flow guide cover (21), and the flow guide cover (21) is detachably connected with a water outlet pipe (12).