CN201215112Y - Sand and mud protection underwater pump - Google Patents

Abstract

The utility model belongs to an improvement structure of a submersible pump, in particular to a mud and sand proof submersible pump. A closed room is arranged in a core shell in an upper diversion shell; the lower part of the closed room is sleeved with the upper end of a pump shaft through the cooperation of the mud and sand proof bearing; a water-passing passage is formed between the mud and sand proof bearing and the pump shaft and is communicated with the closed room and a water passage; the rotary shaft of a motor is connected with the pump shaft of a water pump through a coaxial coupling; the connection section of the motor and the lower end of water inlet section are fixed through the cooperation of a flange; a closed cavity is arranged between the connection part for the connection section of the motor and the lower end of the water inlet section; a water inlet filter is fixed on an opening arranged on the shell wall of the closed cavity; a water-passing passage is formed between the peripheral wall of the pump shaft and the inner wall of the mud and sand proof bearing; an exhaust port is fixed at the through hole arranged at the upper part of the water inlet section; the exhaust port and the water inlet filter are mutually communication through the through hole, the closed cavity arranged at the lower part and the water-passing passage respectively. The utility model has the advantages of simple and compact structure, long service life and good result of mud and sand proof.

Description

Anti-silt particle Submerged Motor Pumps

Technical field

The utility model belongs to the improvement of Submerged Motor Pumps structure, particularly anti-silt particle Submerged Motor Pumps.

Background technique

Submerged Motor Pumps is a kind of equipment of carrying liquid in deep-well or pit.The Submerged Motor Pumps of domestic at present, external production, to the technical standard of water, water quality sand content (solid particle) is all 0.01% (ten thousand/).In actual use, no matter be deep-well or pit, the water quality sand content is all more than 8/10000ths.When pump working, contain the water quality of silt particle, enter in the pump by the water sucking mouth, the pump shaft of rotation, impeller run into the wearing and tearing of silt particle post acceleration bearing, choma, influence the working life of complete machine.Patent No. ZL98250785.2 discloses the anti-silt particle device of a kind of Submerged Motor Pumps, and it can effectively stop the first road bearing that enters Submerged Motor Pumps, plays certain anti-silt particle effect, and multistage submersible electric pump is still had deficiency, has short defective of life-span.

Summary of the invention

The purpose of this utility model is to provide a kind of anti-silt particle Submerged Motor Pumps, and is simple in structure, compact, do not influence pump shaft power, and anti-silt is effective, solved the anti-silt particle difficult problem of single-stage and multistage submersible electric pump, makes its longer service life.

The utility model is achieved in that a kind of anti-silt particle Submerged Motor Pumps, comprise the motor of installing successively in the pump housing, water pump, last blower inlet casing is installed mutually with check valve case and is connected, axle sleeve and sand cap are packed in respectively on pump shaft and the water inlet joint, axle sleeve and the sand cap that is packed in the casing are to rotate movingly, being installed in labyrinth cap on the pump shaft by axle sleeve matches with sand cap and contacts, outside framework oil seal is installed in the sand cap, anti-silt particle bearing cooperates and is packed in in the water joint, water channel is being set around the core shell, in the core shell in the last diversion shell confined chamber is being set, the upper end that the bottom of confined chamber cooperates suit pump shaft by anti-silt particle bearing, anti-silt particle bearing and pump shaft are Spielpassung, form the sluice between anti-silt particle bearing and the pump shaft, the sluice is communicated with confined chamber and water channel, the upper end of last diversion shell is being provided with water outlet, and water outlet is communicated with water channel; The rotating shaft of motor is connected by the coaxial-type coupling with the pump shaft of water pump, the lower end of motor linkage section and water inlet joint cooperates affixed by flange, the joint of motor linkage section and water inlet joint lower end is being provided with closed chamber, installing the water inlet filter on the opening that is provided with on the shell wall of closed chamber, pump shaft is a Spielpassung with cooperating the axis hole that is packed in the anti-silt particle bearing in the joint of water into, form the sluice between the inwall of pump shaft perisporium and anti-silt particle bearing, installing relief opening on the through hole that the top of water inlet joint is provided with, relief opening and water inlet filter pass through through hole respectively, closed chamber and sluice that the bottom is provided with are interconnected.

The utility model is because the top in the shell core in last blower inlet casing is being provided with confined chamber, (owing to being Spielpassung) forms the sluice between pump shaft and the anti-silt particle bearing, the sluice is communicated with confined chamber and water channel, thereby the water of extracting out can enter confined chamber by the sluice in the time of the sluice, pump shaft is worked under the effect of water lubrication, prolong its life-span, also kept the upper and lower pressure balance of anti-silt particle bearing simultaneously; And in the water inlet joint closed chamber is being set, water enters closed chamber by the water inlet filter, enter the through hole that is provided with on its top after being full of again through the sluice that forms between pump shaft and the anti-silt particle bearing, unnecessary air will be discharged through relief opening, treat that water is full of the back pump shaft and can rotates movingly with anti-silt particle bearing under the effect of water lubrication, also obviously prolonged its working life; Machine shaft of the present utility model is connected by the coaxial-type coupling with pump shaft, guarantees the concentricity of pump shaft and motor shaft, the wearing and tearing of pump shaft is further reduced, thereby further prolonged working life.The utility model is provided with confined chamber in last one link of Multiple Sinking Pump, silt particle can't be entered, the destruction that the bearing of assurance submersible pump is not subjected to silt particle, as seen, the letter of the utility model structure is compact, does not influence pump shaft power, cost is low, long service life, and anti-silt particle is effective.

Description of drawings

The utility model is described in further detail below in conjunction with accompanying drawing.

Fig. 1 is an overall structure schematic representation of the present utility model;

Fig. 2 is a partial structurtes cross-sectional schematic of the present utility model;

Fig. 3 is the sectional structure schematic representation of last blower inlet casing.

Embodiment

A kind of anti-silt particle Submerged Motor Pumps, as Fig. 1, Fig. 2 and shown in Figure 3, comprise the motor of installing successively in the pump housing 1, water pump 2, last blower inlet casing 3 is installed mutually with check valve case 4 and is connected, axle sleeve 17 and sand cap 15 are packed in respectively on pump shaft 5 and the water inlet joint 10, axle sleeve 17 and the sand cap 15 that is packed in the casing are to rotate movingly, being installed in labyrinth cap 16 on the pump shaft 5 by axle sleeve 17 matches with sand cap 15 and contacts, outside framework oil seal 14 is installed in the sand cap 15, anti-silt particle bearing 8 cooperations are packed in into, and water saves in 10, water channel 18 is being set around the core shell 20, in the core shell 20 in the last diversion shell 7 confined chamber 9 is being set, the upper end that the bottom of confined chamber 9 cooperates suit pump shaft 5 by anti-silt particle bearing 8, anti-silt particle bearing 8 is a Spielpassung with pump shaft 5, form sluice 24 between anti-silt particle bearing 8 and the pump shaft 5, sluice 24 is communicated with confined chamber 9 and water channel 18, the upper end of last diversion shell 7 is being provided with water outlet, water outlet is communicated with water channel 18, pump shaft 5 impeller 6 are rotated in last diversion shell 7, water is upwards smoked through the water channel 18 and the water outlet of shell core 20 peripheries discharge; The pump shaft 5 of the rotating shaft of motor 1 and water pump 2 is connected by the coaxial-type coupling, the lower end of motor linkage section 11 and water inlet joint 10 cooperates affixed by flange, the joint of motor linkage section 11 and water inlet joint 10 lower ends is being provided with closed chamber 19, installing water inlet filter 12 on the opening that is provided with on the shell wall of closed chamber 19, pump shaft 5 is a Spielpassung with cooperating the axis hole that is packed in the anti-silt particle bearing in the joint of water into 10, form sluice 22 between the inwall of pump shaft 5 perisporiums and anti-silt particle bearing 23, installing relief opening 13 on the through hole 21 that the top of water inlet joint 10 is provided with, relief opening 13 and water inlet filter 12 are respectively by through hole 21, closed chamber 19 and sluice 22 that the bottom is provided with are interconnected, and close the tubbiness that is shaped as of chamber 19.

Claims (2)

1, a kind of anti-silt particle Submerged Motor Pumps, comprise the motor of installing successively in the pump housing (1), water pump (2), last blower inlet casing (3) is installed mutually with check valve case (4) and is connected, axle sleeve (17) and sand cap (15) are packed in respectively on pump shaft (5) and the water inlet joint (10), axle sleeve (17) and the sand cap (15) that is packed in the casing are to rotate movingly, being installed in labyrinth cap (16) on the pump shaft (5) by axle sleeve (17) matches with sand cap (15) and contacts, outside framework oil seal (14) is installed in the sand cap (15), anti-silt particle bearing (8) cooperation is packed in into, and water saves in (10), core shell (20) is being provided with water channel (18) on every side, it is characterized in that: go up in the core shell (20) in the diversion shell (7) confined chamber (9) is being set, the bottom of confined chamber (9) cooperates suit the upper end of pump shaft (5) by anti-silt particle bearing (8), anti-silt particle bearing (8) is a Spielpassung with pump shaft (5), form sluice (24) between anti-silt particle bearing (8) and the pump shaft (5), sluice (24) is communicated with confined chamber (9) and water channel (18), the upper end of last diversion shell (7) is being provided with water outlet, and water outlet is communicated with water channel (18); The pump shaft (5) of the rotating shaft of motor (1) and water pump (2) is connected by the coaxial-type coupling, the lower end of motor linkage section (11) and water inlet joint (10) cooperates affixed by flange, the joint of motor linkage section (11) and water inlet joint (10) lower end is being provided with closed chamber (19), installing water inlet filter (12) on the opening that is provided with on the shell wall of closed chamber (19), pump shaft (5) is a Spielpassung with cooperating the axis hole that is packed in the anti-silt particle bearing in the joint of water into (10), form sluice (22) between the inwall of pump shaft (5) perisporium and anti-silt particle bearing (23), installing relief opening (13) on the through hole (21) that the top of water inlet joint (10) is provided with, relief opening (13) and water inlet filter (12) are respectively by through hole (21), closed chamber (19) and sluice (22) that the bottom is provided with are interconnected.

2, a kind of anti-silt particle Submerged Motor Pumps according to claim 1 is characterized in that: closed chamber (19) be shaped as tubbiness.

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