CN206972563U - Immersible pump with novel sealing structure - Google Patents

Abstract

A kind of immersible pump with novel sealing structure, including immersible pump body and the mechanical seal being assemblied in outside pump shaft, the immersible pump body includes casing, it is rotatablely arranged at the pump shaft at casing center and positioned at casing lower space and is sleeved on the motor assembly on the outside of pump shaft, the casing internal is provided with the bearing block being set in outside pump shaft in motor assembly top, the outer edge surface of bearing block is fixedly connected with casing, bearing is equipped between bearing block and pump shaft, the bearing (ball) cover being sleeved on outside pump shaft is fixedly connected with above bearing block, reinforced seal is equipped between the bearing (ball) cover and pump shaft, the mechanical seal is arranged in the inner chamber between reinforced seal upper surface and water inlet joint.The seal structure of submersible pump is reliable, it can remain to that there is reliable sealing effectiveness when depth of immersion is more than 3 meters, be avoided that because sealing effectiveness is bad and caused by bearing chamber water inlet, bearing damage, rotor sweep the total generation of the shapes such as boring, can effectively extend the service life of immersible pump.

Description

Immersible pump with novel sealing structure

Technical field

It the utility model is related to diving pump technical field, and in particular to a kind of immersible pump with novel sealing structure.

Background technology

At present, it is most of to be sealed for QS type immersible pump water inlet joints end only with outside framework oil seal, with prevent water and Silt enters bearing chamber.The air-proof condition of outside framework oil seal is external pressure no more than 0.03MPa, that is to say, that the water of water pump Depth of immersion is substantially no more than 3 meters, and when water pump water submerged depth is more than 3 meters, skeleton oil seal effect reduces, or even reaches Less than requiring, and then easily intake in bearing chamber, easily cause the damage of bearing, therefore most of QS types immersible pump uses can only Just can be with normal use when depth of immersion is less than 3 meters.And during real use, general depth of immersion is above 3 meters of (standards It is required that the depth of immersion of water pump is no more than 5 meters), particularly when taking out well water, because sound water level difference is larger, therefore user makes Used time must flood water pump very deep position, and standard that often can be more than 5 meters requires that so, immersible pump is in use Often bearing chamber is intake caused by skeleton oil seal fails, and bearing damage, rotor sweeps the generation of the situations such as boring, and this is also to make The main reason for easily being damaged into water pump.

The content of the invention

In view of the above-mentioned problems of the prior art, the utility model provides a kind of diving with novel sealing structure Pump, the seal structure of submersible pump is reliable, can remain to have reliable sealing effectiveness when depth of immersion is more than 3 meters, be avoided that because Sealing effectiveness it is bad and caused by bearing chamber water inlet, bearing damage, rotor sweep the total generation of the shapes such as boring, can effectively extend diving The service life of pump.

To achieve these goals, the utility model provides a kind of immersible pump with novel sealing structure, including diving Pump body and the mechanical seal being assemblied in outside pump shaft, the immersible pump body include casing, are rotatablely arranged in casing The pump shaft of the heart and positioned at casing lower space and the motor assembly on the outside of pump shaft is sleeved on, the casing internal is on motor assembly Portion is provided with the bearing block being set in outside pump shaft, and the outer edge surface of bearing block is fixedly connected with casing, between bearing block and pump shaft Be equipped with bearing, be fixedly connected with the bearing (ball) cover being sleeved on outside pump shaft above bearing block, the bearing (ball) cover and pump shaft it Between be equipped with reinforced seal, the mechanical seal is arranged in the inner chamber between reinforced seal upper surface and water inlet joint.

In the technical scheme, by being provided with mechanical seal in reinforced seal upper end, sealing structure can be effectively improved Compressive resistance, water pump can be enable to still ensure that effective sealing of bearing chamber, mechanical seal in the deeper environment of depth of immersion Setting effectively solve reinforced seal submersible pump start moment axial float caused by slight seepage the defects of.This is latent Seal structure of water pump is reliable, can remain to have reliable sealing effectiveness when depth of immersion is more than 3 meters, be avoided that because of sealing effectiveness It is bad and caused by bearing chamber water inlet, bearing damage, rotor sweep the total generation of the shapes such as boring, can effectively extend the use of immersible pump Life-span.

Further, in order to ensure sealing effectiveness, the mechanical seal includes being set in outside pump shaft and and bearing (ball) cover The stationary ring that is fixedly connected, spring base two of the slip cap outside pump shaft, cover above stationary ring and ordinatedly with pump shaft gap Loaded on outside pump shaft and be fixedly connected on the rotating ring of the lower surface of spring base two, above spring base two and be fixedly set in pump Spring base one outside axle, the spring being connected between spring base one and spring base two, the lower surface of the rotating ring and stationary ring Upper surface slide coordinates, and the stationary ring is crimped on the upper surface of reinforced seal.

Further, in order to ensure sealing effectiveness, the spring base two is had by center to be adapted with the external diameter of the pump shaft Circular hole disk and be fixedly installed on disk center region top and slide suit with pump shaft outside annular boss form.

Brief description of the drawings

Fig. 1 is structural representation of the present utility model；

Fig. 2 is the partial enlarged drawing in the utility model；

Fig. 3 is the structural representation of the spring base two in the utility model.

In figure：1st, immersible pump body, 2, casing, 3, pump shaft, 4, motor assembly, 5, bearing block, 6, bearing, 7, bearing end Lid, 8, reinforced seal, 9, mechanical seal, 10, water inlet joint, 11, stationary ring, 12, spring base two, 13, rotating ring, 14, spring base one, 15th, spring, 16, disk, 17, annular boss.

Embodiment

The utility model is described in further detail below.

As shown in Figure 1 to Figure 3, the utility model provides a kind of immersible pump with novel sealing structure, including immersible pump Body 1 and the mechanical seal 9 being assemblied in outside pump shaft 3, the immersible pump body 1 include casing 2, are rotatablely arranged at casing The pump shaft 3 at 2 centers and positioned at the lower space of casing 2 and the motor assembly 4 in the outside of pump shaft 3 is sleeved on, in electricity inside the casing 2 The top of machine assembly 4 is provided with the bearing block 5 being set in outside pump shaft 3, and the outer edge surface of bearing block 5 is fixedly connected with casing 2, bearing Bearing 6 is equipped between seat 5 and pump shaft 3, the top of bearing block 5 is fixedly connected with the bearing (ball) cover 7 being sleeved on outside pump shaft 3, institute State and reinforced seal 8 is equipped between bearing (ball) cover 7 and pump shaft 3, the mechanical seal 9 is arranged on the upper surface of reinforced seal 8 with entering In inner chamber between water section 10, wherein water inlet joint 10 is arranged on the top of casing 2.By being provided with machinery in reinforced seal upper end Sealing, can effectively improve the compressive resistance of sealing structure, water pump can be enable to be still ensured that in the deeper environment of depth of immersion Effective sealing of bearing chamber, the setting of mechanical seal effectively solve reinforced seal and start moment axial float in submersible pump Caused by slight seepage the defects of.The seal structure of submersible pump is reliable, can remain to have reliably when depth of immersion is more than 3 meters Sealing effectiveness, be avoided that because sealing effectiveness is bad and caused by bearing chamber water inlet, bearing damage, rotor sweep the total hair of the shapes such as boring It is raw, it can effectively extend the service life of immersible pump.

In order to ensure sealing effectiveness, the mechanical seal 9 includes being set in outside pump shaft 3 and fixing with bearing (ball) cover 7 The stationary ring 11 of connection, above stationary ring 11 and spring base two 12 of the slip cap outside the pump shaft 3, with the cooperation of the gap of pump shaft 3 Ground is set in rotating ring 13 that is outside pump shaft 3 and being fixedly connected on the lower surface of spring base 2 12, above spring base 2 12 and The spring base 1 outside pump shaft 3, the spring 15 being connected between spring base 1 and spring base 2 12 are fixedly set in, it is described The lower surface of rotating ring 13 coordinates with the upper surface slide of stationary ring 11, and the stationary ring 11 is crimped on the upper surface of reinforced seal 8.

In order to ensure sealing effectiveness, the spring base 2 12 has the circle being adapted with the external diameter of the pump shaft 3 by center The disk 16 in hole and be fixedly installed on the central area top of disk 16 and slide suit with pump shaft 3 outside 17 groups of annular boss Into.

Claims (3)

1. a kind of immersible pump with novel sealing structure, including immersible pump body（1）, the immersible pump body（1）Including machine Shell（2）, be rotatablely arranged at casing（2）The pump shaft at center（3）With positioned at casing（2）Lower space and it is sleeved on pump shaft（3） The motor assembly in outside（4）, the casing（2）Inside is in motor assembly（4）Top, which is provided with, is set in pump shaft（3）Outside axle Bearing（5）, bearing block（5）Outer edge surface and casing（2）It is fixedly connected, bearing block（5）With pump shaft（3）Between be equipped with bearing （6）, bearing block（5）Top, which is fixedly connected with, is sleeved on pump shaft（3）Outside bearing (ball) cover（7）, the bearing (ball) cover（7）With pump Axle（3）Between be equipped with reinforced seal（8）, it is characterised in that also include being assemblied in pump shaft（3）Outside mechanical seal（9）, institute State mechanical seal（9）It is arranged on reinforced seal（8）Upper surface and water inlet joint（10）Between inner chamber in.

A kind of 2. immersible pump with novel sealing structure according to claim 1, it is characterised in that the mechanical seal （9）Including being set in pump shaft（3）Outside and and bearing (ball) cover（7）The stationary ring being fixedly connected（11）, positioned at stationary ring（11）Top And slip cap is mounted in pump shaft（3）Outside spring base two（12）With pump shaft（3）Gap is ordinatedly set in pump shaft（3）Outside And it is fixedly connected on spring base two（12）The rotating ring of lower surface（13）, positioned at spring base two（12）Top and it is fixedly set in pump shaft （3）Outside spring base one（14）, be connected to spring base one（14）With spring base two（12）Between spring（15）, the rotating ring （13）Lower surface and stationary ring（11）Upper surface slide coordinate, the stationary ring（11）It is crimped on reinforced seal（8）Upper surface.

A kind of 3. immersible pump with novel sealing structure according to claim 2, it is characterised in that the spring base two （12）Had and the pump shaft by center（3）The disk of circular hole that is adapted of external diameter（16）Be fixedly installed on disk（16）In Heart area top and slide suit and pump shaft（3）Outside annular boss（17）Composition.