CN2123631U

CN2123631U - High delivery lift diving water pump

Info

Publication number: CN2123631U
Application number: CN 92207495
Authority: CN
Inventors: 古春林
Original assignee: TIANJIN SUBMERSIBLE PUMP FACTO
Current assignee: TIANJIN SUBMERSIBLE PUMP FACTO
Priority date: 1992-04-22
Filing date: 1992-04-22
Publication date: 1992-12-02

Abstract

The utility model relates to a high lift submerged pump which is characterized in that a water absorbing cavity is arranged on the upper part of the pump body, and an impeller wheel and a guiding housing are arranged in opposite positions; the pump body is composed of two sections, the upper section and the lower section are connected by a middle connecting frame, and the pump shafts are connected by a shaft coupling. The utility model can automatically balance the axial force, reduce the wear of the motor of the submerged pump, and increase the pump lift. With the pump body composed of two sections, the brace is shortened and stops rising up, the rigidity of the pump body is improved, the length of the pump shaft is shortened, the processing performance of the pump shaft is improved, and the processing precision of the pump shaft is raised.

Description

High delivery lift diving water pump

The utility model relates to a kind of pump class, mainly is the irrigation and drainage that are used for agricultural, water conservancy, also is used for the absorption of industry, mine, mountain area and town water supply and other liquid.

Existing submersible pump, as QJ type submersible pump, adopt impeller, lead the unidirectional installation of shell, its pump housing connects to an integral body by bolt, axial force is big when high-lift, causes motor for submerged pump to wear and tear, though take as reducing axial force with the Balance disc device, but effect is also undesirable, and unit can't adapt to high-lift requirement.Because the pump housing is an integral body, the length of pump shaft is long when high-lift, causes the pump shaft processing difficulties, and the bad assurance of precision also needs special device sometimes, and the long tie rod that also causes of the pump housing rises, and makes the poor rigidity of pump.

The purpose of this utility model is to overcome the shortcoming of prior art, a kind of impeller is provided, leads the opposed installation of shell; The pump housing is formed by two sections; Link reasonable structural arrangement, a kind of high-lift submersible pump of automatically balancing axial force between pump shaft and the pump shaft by coupling.

The purpose of this utility model realizes with following scheme:

Water sucting cavity is located at the top of upper pump casing; Last impeller, on lead shell and following impeller, lead the opposed installation of shell down; The pump housing is divided into two sections, and coupling frame linked during its upper and lower pump housing was used, and middle coupling frame has two mutual disconnected flow surfaces, and the centre has a through hole; Went up the water joint two mutual disconnected flow surfaces were arranged; Be evenly equipped with three gussets in the water inlet joint; Be connected with coupling between pump shaft and the pump shaft.

The advantage that the utlity model has is:

1. impeller of the present utility model, lead the opposed installation of shell, can automatically balancing axial force, the axial force of high-lift submersible pump is reduced greatly, reach in a basic balance, thereby improved lift of pump, reduced the wearing and tearing of motor for submerged pump, and made motor for submerged pump power reduction 10---20%.

2. the pump housing of the present utility model is divided into two sections, and its upper pump casing is connected by middle coupling frame with lower pump body, shortens when making tie rod length than the integrated type pump housing, and tie rod no longer rises, and has improved the rigidity of the pump housing.

3. linked by coupling between pump shaft of the present utility model and the pump shaft, the length that makes pump shaft has overcome the processing difficulties that causes because of pump shaft is long than shortening in the past, has improved the machining accuracy of pump shaft.

Description of drawings:

Fig. 1 is used for the structural representation of 6 grades of submersible pumps for the utility model;

Fig. 2 is the A-A generalized section of Fig. 1;

Fig. 3 is the B-B generalized section among Fig. 1;

Fig. 4 is the C-C generalized section of Fig. 1.

Below in conjunction with accompanying drawing embodiment of the present utility model is described in further detail:

Embodiment of the present utility model selects 6 grades of submersible pumps, and it is by last impeller 4, on lead shell 5, following impeller 17 is led shell 18, middle coupling frame 8, the dual-purpose joint 3 of sucking-off, coupling 20, last pump shaft 21, following pump shaft 10 compositions such as grade down.

The dual-purpose joint 3 of sucking-off that is provided with water sucting cavity 23 and water chamber 2 is contained in the top of upper pump casing I, itself and valve body 1 usefulness bolt 24 link, the dual-purpose joint of sucking-off and on lead shell 5 usefulness tie rods 22 and link, on lead impeller 4 be housed in the shell 5, it links with key and last pump shaft 21, on lead shell and cross 6 bindings of water joint 7 usefulness bolts with last, the dual-purpose joint of sucking-off, on lead shell, went up water and save composition upper pump casing I, going up the water joint has two mutual disconnected flow surfaces, sees that 26,27 liang among Fig. 2 are located.Last water inlet saves, leads down shell 18, water inlet joint 11 is formed the lower pump body II, and water inlet is evenly equipped with three gussets in saving, and sees 31 places among Fig. 4, and gusset is used to support lower pump body.Lower pump body II and middle coupling frame 8 usefulness tie rods 16 link, and middle coupling frame has two mutual disconnected flow surfaces, and has the through hole of a dress coupling in the centre, sees that 28,29 liang among Fig. 3 are located and 30 places.Lower pump body II and coupling frame 12 usefulness bolts 13 link.

Owing to impeller, lead the opposed installation of shell, can automatically balancing axial force, the axial force of pump is reduced greatly, improved lift of pump, reduce the wearing and tearing of motor; The pump housing is divided into two sections, and the length that can make tie rod has shortened during than integrated type, has improved the rigidity of the pump housing; Pump shaft also is divided into two sections in addition, has so just produced new effect, even pump shaft is easy to process, has improved the machining accuracy of pump shaft.

Moreover went up water joint 7, middle coupling frame 8, went up water inlet joint 19, water inlet joint 11 forms diversion cavity 15.Water chamber is formed by the dual-purpose joint 3 of sucking-off, check valve 25.

Liquid is sucked by water sucting cavity 23, through last impeller 4, on lead shell 5, flow into after boosting and went up water joint 7, middle coupling frame 8, go up water inlet joint 19, enter down impeller 17, lead shell 18 down step by step, again through boost step by step by water inlet save 11, diversion cavity, water chamber 2 be through check valve 25 discharges.

Claims

1, a kind of high-lift submersible pump by impeller, lead shell, pump shaft, coupling, middle coupling frame etc. and form, is characterized in that:

1. water sucting cavity is located at the top of upper pump casing;

2. go up impeller, on lead shell and following impeller, lead the opposed installation of shell down;

3. the pump housing is divided into two sections, and coupling frame linked during its upper and lower pump housing was used; Middle coupling frame has two mutual disconnected flow surfaces, and the centre has a through hole;

4. went up the water joint two mutual disconnected flow surfaces were arranged;

5. be evenly equipped with three gussets in the water inlet joint;

6. be connected with coupling between pump shaft and the pump shaft.