CN216518689U - Sewage lift pump - Google Patents

Abstract

The application discloses sewage lift pump, including the casing with set up the motor in the casing, the casing includes bottom casing, barrel, mounting panel and top casing, the terminal rotatable running through of rotor shaft of motor the bottom casing to be provided with the impeller, the bottom of casing is provided with water inlet and outlet, the controlling means of motor sets up in the top casing, the both ends of barrel are connected respectively in bottom casing and mounting panel, the barrel is both ends open-ended hollow structure, the barrel is close to the one end inner wall of mounting panel and inwards stretches annular first boss, the shell of motor is bent and is had the second boss that corresponds the setting with first boss, be provided with first sealing washer between first boss and the second boss. This application is simple and practical, utilizes barrel and motor self fixed structure first sealing washer, need not to increase solitary fixing device, retrencies the structure, and the leakproofness of this sewage elevator pump self is good, protects its controlling means, increase of service life.

Description

Sewage lift pump

Technical Field

The application relates to the technical field of sewage treatment, in particular to a sewage lift pump.

Background

The sewage lifting pump is mainly used for discharging sewage of sanitary wares in places without sewage self-flowing discharge, such as basements, ships, villas and the like, which are far away from a vertical drainage pipe and have poor drainage conditions, and can collect and treat domestic water in toilets, particularly, the position of a toilet bowl or a hand washing basin in the toilets is lower than the height of a city drainage pipe, and the sewage lifting pump is required to be assisted to lift the sewage in the toilets to a certain height and then discharge the sewage into the city drainage pipe. The sewage lift pump needs to be provided with an electric control sewage lift pump, a control device (a circuit board and the like) of the sewage lift pump needs to be strictly waterproof, a pump cavity and the control device need to be sealed and isolated, and the sewage lift pump is realized by a sealing ring mounting seat which is arranged independently, so that the assembly difficulty is caused. Accordingly, improvements are needed.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a sewage lifting pump to overcome the defects in the prior art.

In order to achieve the purpose, the utility model provides the following technical scheme:

the embodiment of the application discloses sewage lift pump, including the casing with set up the motor in the casing, the casing is including bottom casing, barrel, mounting panel and the top casing that connects gradually, the terminal rotatable running through of rotor shaft of motor the bottom casing to be provided with the impeller, the bottom of casing is provided with water inlet and outlet, the controlling means of motor sets up in the top casing, the both ends of barrel are connected respectively in bottom casing and mounting panel, the barrel is both ends open-ended hollow structure, the one end inner wall that the barrel is close to the mounting panel is inwards protruding to be stretched and is had annular first boss, the shell of motor is bent and is had the second boss that corresponds the setting with first boss, be provided with first sealing washer between first boss and the second boss.

Further, in the sewage lift pump, the top end of the motor penetrates through the mounting plate and extends into the top shell, the inner wall of the mounting plate convexly extends to form a third boss with an annular step, and the bottom surface of the third boss abuts against the top surface of the second boss.

Further, in the above sewage lift pump, an arc-shaped boss corresponding to the first seal ring is protruded from a top surface of the first boss.

Furthermore, in the sewage lift pump, an annular first groove is concavely arranged on the top surface of the first boss, the first groove is arranged on the outer side of the arc-shaped boss, and a fourth boss inserted into the first groove is convexly extended at the bottom of the mounting plate.

Furthermore, in the sewage lift pump, a second groove with annular steps is formed in the top end of the inner wall of the mounting plate, the tail end of the top shell is inserted into the second groove, a fifth boss corresponding to the second groove is convexly extended on the outer wall of the top shell, and a second sealing ring is arranged between the fifth boss and the second groove.

Further, in the sewage lift pump, the top end of the outer wall of the cylinder body protrudes and extends with an exhaust hole communicated with the inside of the cylinder body.

Further, in the sewage lift pump, steel balls are arranged in the exhaust holes, third grooves are formed in the top ends of the inner walls of the exhaust holes, third sealing rings are arranged, and the diameter of center holes of the third sealing rings is smaller than that of the steel balls.

Furthermore, in the sewage lift pump, the bottom surface of the mounting plate protrudes and extends with two ribs, and the bottom surfaces of the two ribs are abutted against the top surface of the third sealing ring and are staggered with the central hole of the third sealing ring.

Further, in the above sewage lift pump, a detection hole for air tightness inspection is provided at the top end of the top housing, and a check valve is connected thereto.

Further, in above-mentioned sewage elevator pump, the lateral wall of top casing is provided with the threading joint, set up the fourth sealing washer between the outer wall of threading joint and top casing.

Compared with the prior art, the utility model has the advantages that: this sewage elevator pump is simple and practical, utilizes barrel and motor self structure fixed first sealing washer, need not to increase solitary fixing device, retrencies the structure, and the leakproofness of this sewage elevator pump self is good, protects its controlling means, increase of service life, and the barrel is provided with the exhaust hole, effectively solves the gas in the start-up process and ties up the phenomenon, and the steel ball and the fourth sealing washer of exhaust downthehole setting can avoid pump body weeping.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present application, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a top view of a sewage lift pump according to an embodiment of the present invention.

Fig. 2 is a schematic cross-sectional view taken along line a-a in fig. 1.

FIG. 3 is a bottom view of a sewage lift pump in an embodiment of the present invention.

Fig. 4 is a schematic cross-sectional view of C-C in fig. 3.

Fig. 5 is a schematic structural diagram of a cylinder according to an embodiment of the present invention.

FIG. 6 is a schematic structural view of an arcuate projection according to an embodiment of the present invention.

FIG. 7 is a schematic structural view of a rib according to an embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described in detail below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1 to 7, a sewage lift pump comprises a housing and a motor 1 arranged in the housing, the housing comprises a bottom housing 2, a cylinder 3, a mounting plate 4 and a top housing 5 which are connected in sequence, the end of a rotor shaft of the motor 1 can rotatably penetrate through the bottom housing 2 and is provided with an impeller 6, the bottom of the housing is provided with a water inlet and a water outlet, wherein the water inlet is arranged at the bottom of the bottom housing, the water outlet is arranged at the top end of the side wall of the cylinder and is communicated with the inside of the cylinder, liquid in a pump cavity can cool the motor, a control device of the motor 1 is arranged in the top housing 5, two ends of the cylinder 3 are respectively connected with the bottom housing 2 and the mounting plate 4, the cylinder 3 is of a hollow structure with two open ends, an annular first boss 31 inwardly protrudes from the inner wall of one end of the cylinder 3 close to the mounting plate 4, a second boss 11 corresponding to the first boss 31 is bent from the housing of the motor 1, a first sealing ring 7 is arranged between the first boss 31 and the second boss 11.

In the technical scheme, the motor, the control device 12 of the motor and related structures of the impeller can be directly related to the prior art, and are not repeated here, the bottom shell, the barrel, the mounting plate and the top shell are respectively formed by blow molding and integrated molding, corresponding mounting bosses are arranged on the outer walls of the bottom shell, and are matched with screws to realize the fixed connection among the bottom shell, the barrel, the mounting plate and the top shell, the mounting bosses can be conventional structures such as triangular prisms, cylinders and the like, the number of the mounting bosses is three or more, the positions of the mounting bosses are not interfered with other structures or not, and a conventional protective cover is connected below the bottom shell, so that large sundries in sewage can be filtered preliminarily, and the interference between a rotor shaft of the motor and the bottom of a sewage tank can be avoided; first boss and barrel integrated into one piece form, and the junction does not exist and reveals probably, and cooperation motor self structural fixation sets up first sealing washer, need not to increase solitary fixing device, retrencies the structure, reduces the assembly degree of difficulty, and this sewage elevator pump self's leakproofness is good, protects its controlling means, increase of service life.

Illustratively, referring to fig. 2 and 4, the top end of the motor 1 penetrates through the mounting plate 4 and extends into the top housing 5, a third boss 41 with an annular step protrudes from the inner wall of the mounting plate 4, and the bottom surface of the third boss 41 abuts against the top surface of the second boss 11.

In this technical scheme, when fixing each other between barrel and the mounting panel, the second boss of third boss extrusion motor, thereby force first boss and the first sealing washer of second boss extrusion each other, realize sealedly, with the pump chamber top seal that forms between barrel and the motor, protect the controlling means on motor top, wherein, the inner wall of mounting panel is protruding still to stretch the stopper 45 that has a plurality of equidistant annular settings, the inner wall of stopper is ARC structure, and with the outer wall interference fit of motor, ensure the axiality of motor and casing installation, and rock or rotate relatively between variable surface motor and the casing.

Illustratively, referring to fig. 7, an arc-shaped boss 311 corresponding to the first seal ring 7 protrudes from the top surface of the first boss 31.

Among this technical scheme, when first sealing washer was extruded, along house type boss to both sides deformation, the first sealing washer of arc boss shape with embedding improves sealing performance.

Illustratively, as shown in fig. 2, 4 and 7, an annular first groove 32 is concavely formed on the top surface of the first boss 31, the first groove 32 is arranged on the outer side of the arc-shaped boss, and a fourth boss 42 inserted into the first groove 32 is convexly formed on the bottom of the mounting plate 4.

Among this technical scheme, the fourth boss is pegged graft in first recess, the quick location installation of mounting panel and barrel of being convenient for, wherein, the outer wall top of barrel is higher than first boss, and flush with the mounting panel outer wall department of correspondence, the mounting panel is quadrilateral for with this sewage elevator pump integral erection in sewage lifting mechanism, and confirm the size according to the mounted position in the sewage lifting mechanism, with barrel and top casing junction thickening, for promoting bulk strength, in the forming process, still can set up rib isotructure.

Illustratively, as shown in fig. 2, 4 and 6, the top end of the inner wall of the mounting plate 4 is provided with a second groove 43 with an annular step, the end of the top housing 5 is inserted into the second groove 43, the outer wall of the top housing 5 protrudes with a fifth boss 51 corresponding to the second groove 43, and a second sealing ring 8 is arranged between the fifth boss and the second groove 43.

In the technical scheme, after the top shell is fixed on the mounting plate, the inner walls of the fifth boss and the second groove extrude the second sealing ring, so that the sealing of the joint of the top shell and the mounting plate is realized, the control device arranged in the top shell is protected, and the service life of the sewage lift pump is prolonged.

Illustratively, as shown in fig. 4 and 5, the top end of the outer wall of the cylinder 3 protrudes with a vent hole 33 communicating with the inside of the cylinder 3.

Among this technical scheme, the exhaust hole forms with barrel integrated into one piece, promptly when the barrel shaping, the protruding arc wall that stretches out of outer wall, and the barrel outer wall between form the exhaust hole, wherein, the bottom in exhaust hole communicates inside the barrel, and in this sewage lift pump start-up process, the air of pump intracavity is got rid of by the exhaust hole, avoids the production of gas-bound phenomenon, guarantees normal start and work.

Illustratively, referring to fig. 4 and 5, a steel ball 331 is arranged in the exhaust hole, a third groove 332 is arranged at the top end of the inner wall of the exhaust hole, and a third sealing ring or an open-hole sealing gasket 333 is arranged, wherein the diameter of the central hole of the third sealing ring 333 is smaller than that of the steel ball.

In the technical scheme, the bottom of the exhaust hole is communicated with the interior of the cylinder through the long groove, when gas in the pump cavity is exhausted, the pressure is not enough to push the steel ball, after the gas is exhausted, the pressure of fluid is far greater than the dead weight of the steel ball, the steel ball is jacked up and plugged at the central hole of the third sealing ring, liquid leakage is avoided, the diameter of the steel ball is at least 2mm larger than that of the central hole of the third sealing ring, and the steel ball is prevented from being extruded out by the fluid pressure.

Illustratively, referring to fig. 2, two ribs 44 protrude from the bottom surface of the mounting plate 4, and the bottom surfaces of the two ribs 44 abut against the top surface of the third sealing ring 333 and are offset from the central hole of the third sealing ring 333.

In this technical scheme, two ribs are fixed in the third recess at exhaust hole top with the third sealing washer from above, avoid the pressure in the exhaust hole to ejecting it.

Illustratively, as shown in fig. 1, the top end of the top case 5 is provided with a check hole 52 for airtightness inspection, and is connected with a check valve (not shown).

In the technical scheme, the detection hole can be realized by plastically packaging a one-way quick connector, when the air tightness of the sewage lifting pump is checked, the external air pipe is directly matched with the corresponding connector to be inserted into the one-way quick connector, and compressed air is filled into the one-way quick connector, so that the air tightness of the top shell can be ensured.

Illustratively, referring to fig. 1 and 2, the sidewall of the top housing 5 is provided with a wire-passing joint 53, and a fourth sealing ring 531 is provided between the wire-passing joint and the outer wall of the top housing 5.

Among this technical scheme, the threading connects chooses for use current structure can, the power cord of motor is drawn forth and is connected in external power source by the threading connects, and the threading connects inside realizes sealedly through modes such as injecting glue, and realizes sealedly through the fourth sealing washer between the outer wall of top casing to guarantee that this sewage elevator pump can reach the waterproof rank of IP 68.

To sum up, this sewage elevator pump is simple and practical, utilizes barrel and motor self structure fixed first sealing washer, need not to increase solitary fixing device, retrencies the structure, and this sewage elevator pump self's leakproofness is good, protects its controlling means, and increase of service life, barrel are provided with the exhaust hole, effectively solve the gas of start-up in-process and tie up the phenomenon, and the steel ball and the fourth sealing washer of exhaust downthehole setting can avoid the pump body weeping.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The foregoing is directed to embodiments of the present application and it is noted that numerous modifications and adaptations may be made by those skilled in the art without departing from the principles of the present application and are intended to be within the scope of the present application.

Claims (10)

1. The utility model provides a sewage lift pump, its characterized in that includes the casing and sets up the motor in the casing, the casing is including bottom casing, barrel, mounting panel and the top casing that connects gradually, the terminal rotatable running through of rotor shaft of motor the bottom casing to be provided with the impeller, the bottom of casing is provided with water inlet and outlet, the controlling means of motor sets up in the top casing, the both ends of barrel are connected respectively in bottom casing and mounting panel, the barrel is both ends open-ended hollow structure, the barrel is close to the one end inner wall of mounting panel and inwards stretches there is annular first boss, the shell of motor is bent and is had the second boss that corresponds the setting with first boss, be provided with first sealing washer between first boss and the second boss.

2. The sewage lift pump of claim 1, wherein: the top of motor runs through the mounting panel and extends to in the top casing, the protruding third boss that has the annular step that stretches of the inner wall of mounting panel, the bottom surface of third boss supports in the top surface of second boss.

3. The sewage lift pump of claim 1, wherein: the top surface of the first boss protrudes and extends with an arc-shaped boss which is arranged corresponding to the first sealing ring.

4. The sewage lift pump of claim 3, wherein: the top surface of the first boss is concavely provided with an annular first groove, the first groove is arranged on the outer side of the arc-shaped boss, and the bottom of the mounting plate is convexly provided with a fourth boss inserted into the first groove.

5. The sewage lift pump of claim 1, wherein: the top end of the inner wall of the mounting plate is provided with a second groove with an annular step, the tail end of the top shell is inserted into the second groove, the outer wall of the top shell is convexly extended with a fifth boss which is arranged corresponding to the second groove, and a second sealing ring is arranged between the fifth boss and the second groove.

6. The sewage lift pump of claim 1, wherein: the top end of the outer wall of the cylinder body convexly extends to form an exhaust hole communicated with the inside of the cylinder body.

7. The sewage lift pump of claim 6, wherein: the exhaust hole is internally provided with a steel ball, the top end of the inner wall of the exhaust hole is provided with a third groove and a third sealing ring, and the diameter of a center hole of the third sealing ring is smaller than that of the steel ball.

8. The sewage lift pump of claim 7, wherein: and the bottom surface of the mounting plate is convexly provided with two ribs, and the bottom surfaces of the two ribs are propped against the top surface of the third sealing ring and are staggered with the central hole of the third sealing ring.

9. The sewage lift pump of claim 1, wherein: the top end of the top shell is provided with a detection hole for air tightness detection and is connected with a one-way valve.

10. The sewage lift pump of claim 1, wherein: the lateral wall of top casing is provided with the threading and connects, set up the fourth sealing washer between the outer wall of threading joint and top casing.

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