CN217558614U - Water pump with novel seal structure - Google Patents

Abstract

The utility model provides a water pump with novel seal structure, fluid machinery technical field, include: casing, power supply, pump shaft, impeller, supporting seat, seal structure, sealed cowling. Wherein the power source is mounted on the housing and has a drive shaft. A pump shaft is in dynamic communication with the drive shaft. The impeller is mounted on the pump shaft. Between the power source and the impeller, a support seat is disposed at the periphery of the pump shaft to support the pump shaft. And the sealing structure is arranged on one side of the supporting seat along the periphery of the pump shaft. The sealing cover is arranged on the supporting seat and on the same side as the sealing structure, and the sealing cover covers the periphery of the sealing structure to form a cavity in a surrounding manner; the cavity is internally provided with lubricating liquid. In the technical scheme of this application, the cavity is held lubricating liquid to can continuously lubricate seal structure, reduce seal structure's harm.

Description

Water pump with novel seal structure

Technical Field

The utility model relates to a fluid machinery technical field especially relates to a water pump with novel seal structure.

Background

A pump is a machine that delivers or pressurizes a fluid. In the prior art, a mechanical sealing structure needs to be arranged between the motor and the impeller inside the water pump, so that water is prevented from leaking to one side of the motor, and the motor is protected. Seal wear is exacerbated when insufficient fluid within the pump casing is in covering contact with the seal, resulting in leakage.

SUMMERY OF THE UTILITY MODEL

The technical problem that this application will solve lies in, to prior art's the aforesaid not enough, provides a water pump with novel seal structure.

This water pump with novel seal structure includes:

a housing;

a power source mounted on the housing and having a drive shaft;

a pump shaft in dynamic communication with the drive shaft;

an impeller mounted on the pump shaft;

a support seat arranged at the periphery of the pump shaft between the power source and the impeller and used for supporting the pump shaft;

the sealing structure is arranged on one side of the supporting seat along the periphery of the pump shaft;

the sealing cover is arranged on the supporting seat and on the same side as the sealing structure, and the sealing cover covers the periphery of the sealing structure to form a cavity in a surrounding mode; the cavity is internally provided with lubricating liquid.

In some improvements, the water pump with the novel sealing structure is a vertical pump, and the power source is arranged at the top of the shell; the sealing structure and the sealing cover are arranged at the bottom of the supporting seat.

In some improvements, the supporting seat is provided with a lubricating liquid adding hole communicated with the cavity; and a plug is arranged on the lubricating liquid adding hole.

In some refinements, the sealing cap is provided with a plurality of through holes and is externally provided with an elastic membrane which hermetically covers the through holes.

In some refinements, the drive shaft is coupled to the pump shaft by a coupling.

In some refinements, the power source is embodied as an electric motor.

In some refinements, the sealing structure is a mechanical seal.

In some improvements, the sealing cover is connected with the supporting seat through screws or bolts, and a sealing ring for sealing is arranged between the sealing cover and the supporting seat.

In some modifications, the shape of the support base is curved to project toward the power source side.

In some improvements, the water pump with the novel seal structure is a multistage vertical centrifugal pump.

In this application, seal structure is located between power supply and the impeller, and fixed mounting has the sealed cowling on the supporting seat, closes the vacuole formation in seal structure periphery, has received lubricated liquid in the cavity to can continuously lubricate seal structure, reduce seal structure's harm.

Drawings

Fig. 1 is a schematic structural diagram of a water pump having a novel sealing structure in an embodiment of the present application.

Fig. 2 is a schematic structural diagram of a support seat and a sealing structure in an embodiment of the present application.

Detailed Description

The following are specific embodiments of the present application and are further described with reference to the accompanying drawings, but the present application is not limited to these embodiments. In the following description, specific details such as specific configurations and components are provided only to help the embodiments of the present application be fully understood. Accordingly, it will be apparent to those skilled in the art that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of the present application. In addition, descriptions of well-known functions and constructions are omitted for clarity and conciseness.

In addition, the embodiments and features of the embodiments in the present application may be combined with each other without conflict.

With reference to fig. 1 and fig. 2, an embodiment of the present application provides a water pump with a novel sealing structure, including: the pump comprises a shell 10, a power source 20, a pump shaft 30, an impeller 40, a support seat 50, a sealing structure 60 and a sealing cover 70. Wherein a power source 20 is mounted on the housing 10 and has a drive shaft 21. A pump shaft 30 is in dynamic communication with the drive shaft 21. An impeller 40 is mounted on the pump shaft 30. Between the power source 20 and the impeller 40, a support seat 50 is provided at the periphery of the pump shaft 30 to support the pump shaft 30. The sealing structure 60 is disposed along the periphery of the pump shaft 30 at one side of the support seat 50. The sealing cover 70 is installed on the supporting seat 50 and on the same side as the sealing structure 60, and the sealing cover 70 covers the periphery of the sealing structure 60 to form a cavity 71 around the periphery of the sealing structure 60; the cavity 71 contains a lubricating fluid 72 therein.

In the embodiment, the supporting seat 50 is disposed at the periphery of the pump shaft 30 to support the pump shaft 30. The support seat 50 is embodied as a bearing seat, allowing the pump shaft 30 to rotate freely. The impeller 40 is installed on the pump shaft 30, and under the driving of the power source 20, the impeller 40 is driven by the pump shaft 30 to rotate, and the pressure of the fluid is increased after the fluid is pressurized by the impeller 40, so that high-pressure water is discharged. A sealing structure 60 is disposed along the outer periphery of the pump shaft 30 at one side of the support seat 50 to prevent internal fluid from entering the power source 20 side and protect the power source 20. Further, a sealing cover 70 is mounted on the supporting seat 50 and on the same side as the sealing structure 60, and covers the periphery of the sealing structure 60 to form a cavity 71 around the periphery of the sealing structure 60; the cavity 71 is provided with the lubricating liquid 72, so that the sealing structure can be lubricated continuously, and the damage to the sealing structure is reduced.

In some embodiments, the water pump with the novel seal structure is a multistage vertical centrifugal pump, and the impeller 40 is embodied as a multistage centrifugal pump impeller. The power source 20 may be embodied as a motor.

In some embodiments, the seal structure 60 is a mechanical seal. The mechanical seal is a device for preventing fluid leakage, which is formed by at least one pair of end faces perpendicular to the rotation axis, and the end faces are kept in contact and relatively slide under the action of fluid pressure and elastic force or magnetic force of a compensation mechanism and the matching of an auxiliary seal. Mechanical seals are within the scope of the prior art and will not be described in great detail herein.

In some embodiments, the drive shaft 21 and the pump shaft 30 are coupled by a coupling. The coupling may be used to transfer the rotational motion and torque output by power source 20 to pump shaft 30. In some embodiments, the coupling can also be used as a safety device to prevent the pump shaft and the impeller from being subjected to excessive load, thereby performing an overload protection function.

The power source 20 is arranged on the top of the shell 10; the sealing structure 60 and the sealing cover 70 are disposed at the bottom of the support seat 50. Referring to fig. 1, a water pump having a novel sealing structure is provided with a motor, a support seat, a sealing structure, and an impeller in sequence from top to bottom along a pump shaft.

Further, the supporting seat 50 is provided with a lubricating liquid adding hole 51 communicated with the cavity 71; a plug 52 is arranged on the lubricating liquid adding hole 51. The lubricating liquid addition hole 51 can be used to replenish the lubricating liquid into the cavity 71.

In some embodiments, the sealing cap 70 is provided with a plurality of through holes 73, and is externally provided with an elastic film 74 that hermetically covers the through holes 73. The elastic membrane 74 has a certain elastic force, and can control the level of the lubricating liquid in the cavity 71 through elastic deformation. When the lubricating fluid in the cavity 71 decreases, the elastic membrane 74 contracts to press the lubricating fluid in the elastic membrane 74 into the cavity 71 for replenishment, thereby maintaining sufficient lubricating fluid in the cavity 71 to lubricate the seal structure 60.

Further, the seal cover 70 is connected to the support seat 50 by screws or bolts, and a seal ring for sealing is further provided therebetween.

The support seat 50 is curved and protruded toward the power source 20. So set up, the inner space of pump is compacter.

In the embodiment of the application, the lubricating liquid can be water or lubricating oil, and the lubricating oil is a liquid or semisolid lubricating agent which is used on various types of automobiles and mechanical equipment to reduce friction and protect machines and workpieces, and mainly plays roles in lubrication, auxiliary cooling, rust prevention, cleaning, sealing, buffering and the like.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular is intended to include the plural unless the context clearly dictates otherwise, and it should be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of features, steps, operations, devices, components, and/or combinations thereof.

In the description of the present application, it is to be understood that the terms "upper", "lower", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a particular orientation, be constructed in a particular orientation, and operate, and thus, should not be construed as limiting the present application.

The specific embodiments described herein are merely illustrative of the spirit of the application. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the present application as defined by the appended claims.

Claims (10)

1. A water pump with a novel sealing structure is characterized by comprising:

a housing (10);

a power source (20) mounted on said housing (10) and having a drive shaft (21);

a pump shaft (30) in power connection with the drive shaft (21);

an impeller (40) mounted on the pump shaft (30);

a support seat (50) arranged at the periphery of the pump shaft (30) between the power source (20) and the impeller (40) and used for supporting the pump shaft (30);

a sealing structure (60) arranged on one side of the supporting seat (50) along the periphery of the pump shaft (30);

the sealing cover (70) is installed on the supporting seat (50) and is arranged on the same side as the sealing structure (60), and the sealing cover (70) covers the periphery of the sealing structure (60) to form a cavity (71) in a surrounding mode on the periphery of the sealing structure (60); the cavity (71) contains lubricating liquid (72).

2. The water pump with the novel sealing structure as claimed in claim 1, wherein the water pump with the novel sealing structure is a vertical pump, and the power source (20) is arranged at the top of the shell (10); the sealing structure (60) and the sealing cover (70) are arranged at the bottom of the supporting seat (50).

3. The water pump with the novel sealing structure as claimed in claim 2, wherein the supporting seat (50) is provided with a lubricating liquid adding hole (51) communicated with the cavity (71); and a plug (52) is arranged on the lubricating liquid adding hole (51).

4. The water pump with a novel sealing structure according to claim 1, wherein a plurality of through holes (73) are provided on the sealing cover (70), and an elastic membrane (74) is provided on the outside to hermetically cover the through holes (73).

5. The water pump with the novel sealing structure according to claim 1, wherein the drive shaft (21) is coupled with the pump shaft (30) through a coupling.

6. The water pump with a novel sealing structure according to claim 1, characterized in that the power source (20) is embodied as an electric motor.

7. The water pump with a novel sealing structure according to claim 1, wherein the sealing structure (60) is a mechanical seal.

8. The water pump with the novel sealing structure is characterized in that the sealing cover (70) is connected with the supporting seat (50) through screws or bolts, and a sealing ring for sealing is arranged between the sealing cover and the supporting seat.

9. The water pump with the novel sealing structure as claimed in claim 1, wherein the shape of the support base (50) is curved and convex toward the power source (20).

10. The water pump with the novel sealing structure as claimed in claim 1, wherein the water pump with the novel sealing structure is a multistage vertical centrifugal pump.

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