CN209800291U - Large-traffic high leakproofness sewage pump - Google Patents

Abstract

The utility model provides a large-traffic high leakproofness sewage pump belongs to fluid machinery technical field. The sewage pump solves the problem that the flow is limited by the connecting structure of the pump body and the pump cover of the existing sewage pump. This high leakproofness sewage pump of large-traffic, the pump head that sets up including the cooperation, the pump body and pump cover, the upper end of the pump body thickens and has radially seted up the arc wall, radial protrusion forms the integral type on the pump cover and with arc wall complex snap ring, the pump cover outer end is located the opposite axial of snap ring and has seted up the through-hole, set up the screw corresponding with the through-hole on the pump head, and wear to establish the screw rod with the pump head between through-hole and screw, the pump body and pump cover fastening shaping, further fasten through radial nut between the pump head and the pump body, sealed chamber has been seted up in the pump head, and the last mechanical seal of motor shaft is located sealed chamber department, sealed intracavity portion has filled with sealed oil, and have the oiling mouth that is linked together with sealed. The utility model has the advantages of good sealing performance and long service life.

Description

Large-traffic high leakproofness sewage pump

Technical Field

The utility model belongs to the technical field of fluid machinery, a water pump is related to, in particular to large-traffic high leakproofness sewage pump.

Background

Sewage pumps belong to one of the non-clogging pumps and are of various types, mainly used for conveying municipal sewage, manure or liquids containing fibers. The conveyed medium contains fiber matter which is easy to wind or bunch, so the flow passage of the pump is easy to block, once the pump is blocked, the pump can not work normally, even the motor is burnt, thereby causing unsmooth sewage discharge and bringing serious influence to urban life and environmental protection. The increase of the pipe diameter of the flow channel of the sewage pump is an effective method for solving the problem of blockage, but along with the increase of the flow channel, the rotating speed of a power impeller of a motor must be increased simultaneously, the problem that the sewage cannot be effectively conveyed due to the fact that the lift of the water pump can be reduced, the service life of a mechanical seal can be prolonged under the condition of high rotating speed, the manufacturing cost of the water pump can be increased, two connection modes are usually arranged in the conventional connection structure of the pump body and the pump cover, a nut is divided into radial fixation and axial fixation, the radial fixation can enable a sealing ring at the connection part to be incapable of completely compressing tightly, the sealing performance is poor, the axial fixation must increase the thickness of the pump body to enable the pump body to be.

Disclosure of Invention

The utility model aims at the above-mentioned problem that exists among the prior art, provide one kind can effectively increase mechanical seal life and the better sewage pump of structural seal nature.

The purpose of the utility model can be realized by the following technical proposal: a high-flow high-sealing sewage pump comprises a pump head, a pump body and a pump cover which are arranged in a matching way, wherein a motor is arranged in the pump body, a rotating shaft of the motor extends into the pump head and is connected with an impeller, a starting capacitor is arranged in the pump cover and is connected with the motor, the upper end part of the pump body is thickened and is radially provided with an arc-shaped groove, the pump cover is radially protruded to form an integrated snap ring matched with the arc-shaped groove, the outer end of the pump cover is positioned opposite to the snap ring and is axially provided with a through hole, the pump head is provided with a screw hole corresponding to the through hole, a screw rod is arranged between the through hole and the screw hole to fasten the pump head, the pump body and the pump cover, the pump head and the pump body are further fastened through a radial nut, a sealing cavity is arranged in the pump head, a mechanical seal on the rotating, and an oil filling port communicated with the sealing cavity is arranged on the pump head, and a plug is arranged at the oil filling port.

The technical effects of the high-flow high-tightness sewage pump are as follows: one part passes through semicircle snap ring chucking between the pump cover and the pump body, another part passes through the screw rod fastening, only need thicken the edge of the pump body and make it can set up the arc wall, fasten for traditional a plurality of nuts, the assembly is convenient with low costs more, and the design in sealed chamber can increase sealed effect, prevent that liquid from in the clearance infiltration pump body of pivot, it is further, the self-tightening characteristic of oil blanket can make mechanical seal better with the compactness of pivot, fluid in the sealed chamber can also play radiating effect to mechanical seal, make the temperature rise range reduce, increase its life.

In the sewage pump with high flow rate and high sealing performance, the oil seal is clamped in the sealing cavity, and the inner ring of the oil seal abuts against the outer ring of the mechanical seal and fastens the mechanical seal through the self-tightening characteristic of the oil seal.

In the above-mentioned high-flow high leakproofness sewage pump, the pump head on be provided with the delivery port, the pump head bottom is provided with into water festival, and pump head, delivery port and water festival formula structure as an organic whole.

In the sewage pump with high flow rate and high sealing performance, the contact surfaces of the upper end and the lower end of the pump body, the pump cover and the pump head are respectively provided with a group of sealing rings, and the number of each group of sealing rings is two and the two sealing rings are arranged in parallel.

In the sewage pump with high flow rate and high sealing performance, the pump body is clamped with a rubber wire buckle, a sealing cover is fastened on the rubber wire buckle, and a connecting line of the starting capacitor penetrates through the sealing cover and the rubber wire buckle to be connected with the motor.

Compared with the prior art, the sewage pump has the following advantages: 1. the pump head, the pump body and the pump cover are fastened into a whole through the screw rod, so that the structure is simple and the assembly is convenient; 2. the diameter of the screw is not limited by the thickness of the pump body, the integral tightness is better, and a sewage pump with larger flow is convenient to design; 3. the structure is equivalent to the reduction of traditional screw holes, and a plurality of sealing rings can be installed, so that the whole sealing performance is better; 4. the mechanical seal has better heat dissipation performance, and the service life of the sewage pump can be effectively prolonged.

Drawings

Fig. 1 is a sectional view of the sewage pump.

Fig. 2 is an enlarged view of a structure at a in fig. 1.

In the figure, 1, a pump head; 2. a pump body; 3. a pump cover; 4. a motor; 5. an impeller; 6. starting a capacitor; 7. a snap ring; 8. a through hole; 9. a screw hole; 10. a screw; 11. a radial nut; 12. sealing the cavity; 13. mechanical sealing; 14. a plug; 15. oil sealing; 16. a water outlet; 17. a water inlet joint; 18. a seal ring; 19. rubber wire buckles; 20. and (7) sealing the cover.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in figures 1 and 2, the sewage pump with high flow rate and high sealing performance comprises a pump head 1, a pump body 2 and a pump cover 3 which are arranged in a matching way, wherein a motor 4 is arranged in the pump body 2, a rotating shaft of the motor 4 extends into the pump head 1 and is connected with an impeller 5, a starting capacitor 6 is arranged in the pump cover 3 and is connected with the motor 4, the upper end part of the pump body 2 is thickened and is radially provided with an arc-shaped groove, a clamping ring 7 which is integrated with the pump cover 3 in a radial protruding way and is matched with the arc-shaped groove is formed on the pump cover 3, the outer end of the pump cover 3 is positioned opposite to the clamping ring 7 and is axially provided with a through hole 8, the pump head 1 is provided with a screw hole 9 corresponding to the through hole 8, a screw rod 10 is arranged between the through hole 8 and the screw hole 9 to fasten the pump head 1, the pump body 2 and the pump cover 3, the sealed cavity 12 is filled with sealing oil, and the pump head 1 is provided with an oil filling port communicated with the sealed cavity 12 and a plug 14 arranged at the oil filling port.

In more detail, an oil seal 15 is clamped in the seal cavity 12, and the inner ring of the oil seal 15 abuts against the outer ring of the mechanical seal 13 and fastens the mechanical seal 13 through the self-tightening characteristic of the oil seal 15.

Further, be provided with delivery port 16 on the pump head 1, 1 bottoms of pump head are provided with into water festival 17, and pump head 1, delivery port 16 and into water festival 17 formula structure as an organic whole, and the design of integral type structure can reduce the assembly step, and holistic uniformity is better.

Further, all be provided with a set of sealing washer 18 on the upper and lower both ends of the pump body 2 and the contact surface of pump cover 3, pump head 1, the quantity of every sealing washer 18 be two and mutual parallel arrangement, through setting up a plurality of sealing washers 18, can holistic leakproofness more.

Furthermore, a rubber wire buckle 19 is clamped on the pump body 2, a sealing cover 20 is fastened on the rubber wire buckle 19, a connecting wire of the starting capacitor 6 penetrates through the sealing cover 20 and the rubber wire buckle 19 to be connected with the motor 4, the rubber wire buckle 19 can fix the connecting wire and seal the connecting wire with the contact surface of the pump body 2, and the sealing cover 20 is sealed with the contact surface of the connecting wire, so that the influence of water vapor generated in the pump body 2 on the circuit inside the pump cover 3 is prevented, and the operation reliability of the sewage pump is improved.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Although the terms pump head 1, pump body 2, pump cover 3, etc. are used more herein, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed in a manner that is inconsistent with the spirit of the invention.

Claims (5)

1. The utility model provides a large-traffic high leakproofness sewage pump, pump head (1), the pump body (2) and pump cover (3) including the cooperation setting, the pump body (2) in install the pivot of motor (4) and stretch into in pump head (1) and be connected with impeller (5), pump cover (3) in be provided with and start electric capacity (6) and be connected with motor (4), a serial communication port, the upper end of the pump body (2) thickens and radially has seted up the arc wall, pump cover (3) on radially bulge form the integral type and with arc wall complex snap ring (7), pump cover (3) outer end is located snap ring (7) and has seted up through-hole (8) in the opposite axial, pump head (1) on set up screw (9) corresponding with through-hole (8) to wear to establish screw rod (10) between through-hole (8) and pump head (9) with pump head (1), The pump body (2) and pump cover (3) fastening shaping, pump head (1) and the pump body (2) between further fasten through radial nut (11), pump head (1) in seted up sealed chamber (12), and motor (4) pivot epaxial mechanical seal (13) are located sealed chamber (12) department, sealed chamber (12) inside is filled with sealed oil, and has the oiling mouth that is linked together with sealed chamber (12) on pump head (1) and is provided with end cap (14) in oiling mouth department.

2. The sewage pump with high flow rate and high sealing performance according to claim 1, characterized in that an oil seal (15) is clamped in the sealing cavity (12), the inner ring of the oil seal (15) abuts against the outer ring of the mechanical seal (13) and the mechanical seal (13) is fastened through the self-tightening characteristic of the oil seal (15).

3. The high-flow and high-tightness sewage pump according to claim 1, characterized in that the pump head (1) is provided with a water outlet (16), the bottom of the pump head (1) is provided with a water inlet joint (17), and the pump head (1), the water outlet (16) and the water inlet joint (17) are of an integrated structure.

4. The sewage pump with high flow rate and high sealing performance according to claim 1, wherein the contact surfaces of the upper and lower ends of the pump body (2) and the pump cover (3) and the pump head (1) are respectively provided with a group of sealing rings (18), and the number of each group of sealing rings (18) is two and the two groups of sealing rings are arranged in parallel.

5. The sewage pump with high flow rate and high sealing performance according to claim 1 or 4, characterized in that the pump body (2) is provided with a rubber wire buckle (19) in a clamping manner, a sealing cover (20) is fastened on the rubber wire buckle (19), and the connection line of the starting capacitor (6) passes through the sealing cover (20) and the rubber wire buckle (19) to be connected with the motor (4).