CN202149058U

CN202149058U - Throttling circulation structure for submerged clear water pump

Info

Publication number: CN202149058U
Application number: CN201120260159U
Authority: CN
Inventors: 钱万钧; 李浩洲; 徐节; 高洁
Original assignee: 李冬庆
Priority date: 2011-07-22
Filing date: 2011-07-22
Publication date: 2012-02-22
Anticipated expiration: 2021-07-22

Abstract

The utility model discloses a throttling circulation structure for a submerged clear water pump and relates to the field of a medium fluid throttling circulation structure formed between a high-pressure region of a pump cavity and a low-pressure region of a mechanical sealing cavity. A coupling pipe (1) is connected with a pump cover (8); a bearing check ring (4) and an elastic check ring (6) are arranged at two ends of a bearing (5) of a pump spindle; a frame oil seal (11) is arranged below the bearing (5) of the pump spindle; the pump cover (8) is connected with a pump body (9); an impeller (10) is arranged at the lower end of the pump spindle (19); a mechanical seal (15) is arranged on the pump spindle (19); a flushing hole (31) is arranged in the pump cover (8); and a medium fluid circulation path A formed between the high-pressure region (25) of the pump cavity and a mechanical sealing cavity (26) is in the structure of the high-pressure region (25) of the pump cavity, the flushing hole (31), the mechanical sealing cavity (26), a flow leakage groove (27) and a gap (29) of a throttle plate. The throttling circulation structure for the submerged clear water pump has the advantages of realizing flushing and cooling for the mechanical seal, improving the effect and service life of the mechanical seal.

Description

Clean waterpump is used the circulating with choke structure under the liquid

Technical field

Clean waterpump relates to the medium fluid circulating with choke structure field that between the low pressure area in the pump chamber zone of high pressure of clean waterpump under the liquid and mechanical seal chamber, forms under the utility model liquid with the circulating with choke structure.

Background technique

Though pump chamber zone of high pressure and mechanical seal chamber low pressure area were also arranged in the pump housing of clean waterpump under liquid in the past; But clearance distance is bigger between pump cover and the impeller; Can not reduce the pressure medium in the low pressure area effectively, so pressure difference is little between pump chamber zone of high pressure and mechanical seal chamber low pressure area, can not between pump chamber zone of high pressure and mechanical seal chamber low pressure area, utilizes medium fluid mechanical seal is effectively washed and to cool off; Thereby just make mechanical seal minimizing in working life, the sealability of pump descends.

Summary of the invention

The purpose of the utility model provides under a kind of liquid clean waterpump and uses the circulating with choke structure; So that between pump chamber zone of high pressure and mechanical seal chamber low pressure area, form medium fluid fast; Can effectively mechanical seal be washed and cool off, to reach the prolonged mechanical sealing purpose in working life.

Clean waterpump is used the circulating with choke structure under the liquid; It is made up of connecting tube, end ring, bearing, circlip, outside framework oil seal, pump cover, pump shaft, mechanical seal, Rectifier plate, impeller and impeller back blade; The O RunddichtringO is arranged between connecting tube and pump cover; Bearing upper/lower terminal on pump shaft is respectively installed with end ring and circlip; Bearing on the pump shaft is positioned at pump cover, between the pump shaft of bearing bottom and pump cover, outside framework oil seal is arranged, and pump cover is connected with the pump housing; Impeller is installed through key and is connected on the pump shaft; Mechanical seal is sleeved on the pump shaft of outside framework oil seal bottom, in pump cover, has flushing hole, and the medium fluid circulating path A that between pump chamber zone of high pressure and mechanical seal chamber, forms is: the flushing hole in pump chamber zone of high pressure, the pump cover, mechanical seal chamber, be installed in dredging flow groove and the Rectifier plate gap between impeller back blade and Rectifier plate in the Rectifier plate on the pump cover.

Clean waterpump further specifies as follows with the circulating with choke structure under the utility model liquid:

Connecting tube is connected with pump cover through connecting tube connection double-screw bolt, connecting tube nut, connecting tube resilient pad.

End ring is installed in the pump cover top through end ring attachment screw and end ring resilient pad.

Rectifier plate is installed in the pump cover bottom through the Rectifier plate attachment screw.

Pump cover connects double-screw bolt, pump cover nut and pump cover resilient pad through pump cover and is installed on the pump housing.

Impeller is fixed on the pump shaft bottom through impeller bolt packing ring and impeller lock bolt.

In the middle of the Rectifier plate of circle, have the impeller mounting hole, on Rectifier plate, have the dredging flow groove and the throttle plate screw mounting hole of a plurality of balanced configurations.

The impeller back blade is positioned at the impeller rear portion.

Between impeller, the pump housing and pump cover, enclose and constitute medium fluid pump chamber zone of high pressure.

Between inboard, pump cover lower end and mechanical seal, be formed with the mechanical seal chamber of medium fluid low pressure area.

Clean waterpump is between the mechanical seal chamber of pump chamber zone of high pressure and low pressure area, to have realized flushing and cooling to mechanical seal through medium circulation with the circulating with choke structural advantages under the utility model liquid, has improved the sealing effect and the working life of mechanical seal.

Description of drawings:

Fig. 1: clean waterpump is with circulating with choke structure cross-sectional schematic under the liquid.

Fig. 2: the Rectifier plate 20 main cross-sectional schematic of looking.

Fig. 3: schematic representation is looked on Rectifier plate 20 left sides.

Fig. 4: Rectifier plate 20 schematic three dimensional views.

Embodiment

Referring to Fig. 1; Clean waterpump is used the circulating with choke structure under the liquid; It is made up of connecting tube 1, end ring 4, bearing 5, circlip 6, outside framework oil seal 11, pump cover 8, pump shaft 19, mechanical seal 15, Rectifier plate 20, impeller 10 and impeller back blade 30; 8 of connecting tube 1 and pump covers have O RunddichtringO 7; Bearing 5 upper/lower terminals on pump shaft 19 are respectively installed with end ring 4 and circlip 6; Bearing 5 on the pump shaft 19 is positioned at pump cover 8, and

pump shaft

19 and 8 of pump covers in bearing 5 bottoms have outside framework oil seal 11, and pump cover 8 is connected with the pump housing 9; Impeller 10 is installed through key 22 and is connected on the pump shaft 19; Mechanical seal 15 is sleeved on the pump shaft 19 of outside framework oil seal 11 bottoms, in pump cover 8, has flushing hole 31, and the medium fluid circulating path A that between pump chamber zone of high pressure 25 and mechanical seal chamber 26, forms is: the flushing hole 31 in pump chamber zone of high pressure 25, the pump cover 8, mechanical seal chamber 26, be installed in dredging flow groove 27 and the Rectifier plate gap 29 between impeller back blade 30 and Rectifier plate 20 in the Rectifier plate 20 on the pump cover 8.

As shown in Figure 1, connecting tube 1 is connected with pump cover 8 through connecting tube connection double-screw bolt 12, connecting tube nut 13, connecting tube resilient pad 14.

End ring 4 is installed in pump cover 8 tops through end ring attachment screw 2 and end ring resilient pad 3.

Rectifier plate 20 is installed in pump cover 8 bottoms through Rectifier plate attachment screw 21.

Pump cover 8 connects double-screw bolt 16, pump cover nut 17 and pump cover resilient pad 18 through pump cover and is installed on the pump housing 9.

Impeller 10 is fixed on pump shaft 19 bottoms through impeller bolt packing ring 23 and impeller lock bolt 24.

Impeller back blade 30 is positioned at impeller 10 rear portions.

Between impeller 10, the pump housing 9 and pump cover 8, enclose and constitute medium fluid pump chamber zone of high pressure 25.

Between pump cover inboard, 8 lower end and mechanical seal 15, be formed with the mechanical seal chamber 26 of medium fluid low pressure area.

Referring to Fig. 2, Fig. 3 and Fig. 4, in the middle of the Rectifier plate 20 of circle, have the impeller mounting hole, on Rectifier plate 20, have the dredging flow groove 27 and throttle plate screw mounting hole 28 of a plurality of balanced configurations.

Claims

1. clean waterpump is used the circulating with choke structure under the liquid; It is made up of connecting tube (1), end ring (4), bearing (5), circlip (6), outside framework oil seal (11), pump cover (8), pump shaft (19), mechanical seal (15), Rectifier plate (20), impeller (10) and impeller back blade (30); It is characterized in that between connecting tube (1) and pump cover (8) O RunddichtringO (7) being arranged; Bearing (5) upper/lower terminal on pump shaft (19) is respectively installed with end ring (4) and circlip (6); Bearing (5) on the pump shaft (19) is positioned at pump cover (8); Between the pump shaft (19) of bearing (5) bottom and pump cover (8), outside framework oil seal (11) is arranged; Pump cover (8) is connected with the pump housing (9); Impeller (10) is installed through key (22) and is connected on the pump shaft (19); Mechanical seal (15) is sleeved on the pump shaft (19) of outside framework oil seal (11) bottom, in pump cover (8), has flushing hole (31), and the medium fluid circulating path A that between pump chamber zone of high pressure (25) and mechanical seal chamber (26), forms is: the flushing hole (31) in pump chamber zone of high pressure (25), the pump cover (8), mechanical seal chamber (26), be installed in dredging flow groove (27) and the Rectifier plate gap (29) between impeller back blade (30) and Rectifier plate (20) in the Rectifier plate (20) on the pump cover (8).

2. clean waterpump is used the circulating with choke structure under the liquid according to claim 1, it is characterized in that connecting tube (1) is connected with pump cover (8) through connecting tube connection double-screw bolt (12), connecting tube nut (13), bullet adapter resilient pad (14).

3. clean waterpump is used the circulating with choke structure under the liquid according to claim 1, it is characterized in that end ring (4) is installed in pump cover (8) top through end ring attachment screw (2) and end ring resilient pad (3).

4. clean waterpump is used the circulating with choke structure under the liquid according to claim 1, it is characterized in that Rectifier plate (20) is installed in pump cover (8) bottom through Rectifier plate attachment screw (21).

5. clean waterpump is used the circulating with choke structure under the liquid according to claim 1, it is characterized in that pump cover (8) connects double-screw bolt (16), pump cover nut (17) and pump cover resilient pad (18) through pump cover and is installed on the pump housing (9).

6. clean waterpump is used the circulating with choke structure under the liquid according to claim 1, it is characterized in that impeller (10) is installed in pump shaft (19) bottom through impeller bolt packing ring (23) and impeller lock bolt (24).

7. clean waterpump is used the circulating with choke structure under the liquid according to claim 1, it is characterized in that impeller back blade (30) is positioned at impeller (10) rear portion.

8. clean waterpump is used the circulating with choke structure under the liquid according to claim 1, it is characterized in that between impeller (10), the pump housing (9) and pump cover (8), enclosing formation medium fluid pump chamber zone of high pressure (25).

9. clean waterpump is used the circulating with choke structure under the liquid according to claim 1, it is characterized in that between inboard, pump cover (8) lower end and mechanical seal (15), being formed with the mechanical seal chamber (26) of medium fluid low pressure area.

10. clean waterpump is used the circulating with choke structure under the liquid according to claim 1; It is characterized in that having the impeller mounting hole in the middle of the Rectifier plate (20) in circle, on Rectifier plate (20), have the dredging flow groove (27) and the throttle plate screw mounting hole (28) of a plurality of balanced configurations.