CN201123966Y

CN201123966Y - Impeller-type proportional mixer

Info

Publication number: CN201123966Y
Application number: CNU2007200328083U
Authority: CN
Inventors: 孙笑奇
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-09-20
Filing date: 2007-09-20
Publication date: 2008-10-01
Anticipated expiration: 2017-09-20

Abstract

The utility model relates to a proportioning mixer used in a large-sized ship and an oil depot foam fire extinguishing system. The proportioning mixer which adopts compartment measuring of fire water and foam liquid is respectively provided with a fire water measuring room and a foam liquid measuring room, wherein the inside of the fire water measuring room is provided with a fire water impeller, while the inside of the foam liquid measuring room is provided with a foam liquid impeller with the size of the impellers set according to flow proportion; the impellers rotate to limit flow rate; moreover, the fire water impeller and the foam liquid impeller are of coaxial linkage. When the impellers rotate a circle, passing fire water and foam liquid are in a constant proportion; meanwhile, the flow rate range of the fire water and the foam liquid increases along with the increase of rotating speed and reduces along with the reduction of rotating speed, which ensures the accurate mixing ratio between the fire water and the foam liquid under non-rated condition.

Description

The vane type proportioner

Affiliated technical field

The utility model belongs to the fire prevention field, relates to the proportioner that uses in a kind of large ship and the oil depot froth fire extinguishing system.

Background technology

At present, the equalizing pressure formula proportioner shortcoming of using in large ship and the oil depot froth fire extinguishing system is: range of flow is narrow, and mixing ratio is inaccurate under the off rating condition, influence fire extinguishing effect.

Summary of the invention

In order to overcome existing equalizing pressure formula proportioner deficiency, the utility model provides a kind of vane type proportioner, this blender adopts fire water and the metering of foam solution locellus, mix in the ratio of setting, not influenced by hydraulic pressure height, flow size, guarantee that fire water and foam solution mixing ratio are accurate under the off rating condition, range of flow is wide.

The technical scheme that its technical problem that solves the utility model adopts is: with fire water and the metering of foam solution locellus, set up fire water measuring room and foam solution measuring room respectively, the fire water impeller is installed in the fire water measuring room, the foam solution impeller is installed in the foam solution measuring room, and the impeller size is pressed flow proportional and is set; The wheel rotation limited flow rate, fire water impeller and the coaxial interlock of foam solution impeller, the impeller revolution moves a week, fire water of passing through and foam solution proportions constant, the range of flow of fire water and foam solution with rotating speed strengthen, rotating speed reduces and to reduce.

The beneficial effects of the utility model are, fire water and foam solution mixing ratio are accurate, and range of flow is wide.

Description of drawings

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 is a structure principle chart of the present utility model.

Fig. 2 is the cutaway view of fire water measuring room.

Fig. 3 is the cutaway view of foam solution measuring room.

1. foam mixing liquids outlet among the figure, 2. foam solution outlet, 3. fire water impeller, 4. fire water measuring room, 5. fire water mechanical seal ring, 6. bearing, 7. universal driving shaft, 8. foam solution mechanical seal ring, 9. foam solution impeller, 10. foam solution measuring room, 11. foam solution imports, 12. fire water imports.

The specific embodiment

In Fig. 1, universal driving shaft (7) is an axis, run through fire water measuring room (4) and foam solution measuring room (10), bearing (6), fire water mechanical seal ring (5), foam solution mechanical seal ring (8) are installed on the universal driving shaft (7), fire water impeller (3) is installed in the fire water measuring room (4) on the universal driving shaft (7), and foam solution impeller (9) is installed in the foam solution measuring room (10) on the universal driving shaft (7).

Fire water enters fire water measuring room (4) from fire water import (12), promote fire water impeller (3) rotation, fire water impeller (3) rotates together by the foam solution impeller (9) that universal driving shaft (7) drives in the foam solution measuring room (10), enter foam solution measuring room (10) interior foam solution from foam solution import (11) this moment, rotated by foam solution impeller (9) to limit the quantity of by,, export (1) by foam mixing liquid and export with after fire water that the fire water measuring room (4) that disappears comes out mixes through foam solution outlet (2).

In accompanying drawing 2, fire water enters fire water measuring room (4) from fire water import (12), promotes fire water impeller (3) rotation, and fire water impeller (3) is fixed on the universal driving shaft (7).

In accompanying drawing 3, foam solution enters foam solution measuring room (10) from foam solution import (11), because foam solution impeller (9) is installed on the same universal driving shaft (7) with fire water impeller (3), the rotating speed of fire water impeller (3) equates with foam solution impeller (9) rotating speed, foam solution limited the quantity of in the ratio of setting by, mixing ratio is not subjected to fire water and foam solution pressure influence, the range of flow of fire water and foam solution with fire water impeller (3) and foam solution impeller (9) rotating speed strengthen, rotating speed reduces and to reduce, and keeps fire water and foam solution proportions constant.

Claims

1. vane type proportioner, set up fire water measuring room and foam solution measuring room respectively, the fire water impeller is installed in the fire water measuring room, the foam solution impeller is installed in the foam solution measuring room, the impeller size is pressed flow proportional and is set, the wheel rotation limited flow rate is characterized in that: fire water impeller and the coaxial interlock of foam solution impeller.