CN2577024Y

CN2577024Y - Fluid switching device

Info

Publication number: CN2577024Y
Application number: CN 02264978
Authority: CN
Inventors: 朱家顺
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-06-21
Filing date: 2002-06-21
Publication date: 2003-10-01
Anticipated expiration: 2012-06-21

Abstract

The utility model relates to a fluid switching device. A water inlet pipe of the utility model is integrally sealed and connected with a switching nozzle by an elastic body, and a water inlet of the water inlet pipe is vertically arranged up and down with a water outlet of the switching nozzle. The switching nozzle which is driven by an air cylinder is integrally fixed with a rotating shaft through a supporting frame to do the synchronized rotation, and thus a water outlet of the switching nozzle is respectively communicated with inlets of a bifurcated pipe to realize the switching of the fluid. The utility model has the advantages that the flow field influence is little, the resistance is little, and the power consumption is little; the connective structure of the elastic body is used, and thus the support problem of the switching nozzle and the sealing problem in the rotating process are solved; the utility model has simple structure without the overflow of the fluid, and is suitable for being used in a device with large caliber and mass flow to detect the instantaneous flow.

Description

Fluid commutator

Technical field

The utility model relates to metering liquid instantaneous flow or the quick fluid commutator that switches flow direction of other needs in the fluid flow device.

Background technique

The type of commutator is distinguished by its structure, generally can be divided into open type and enclosed two classes.The open type commutator adopts nozzle not employ the commutation case and changes the direction of a stream of water, and its great advantage is that the fluctuation that in commutation process ducted flow field is produced is little, makes simple, shortcoming is that relative size is big, easily produce the seepage phenomenon, be not suitable for heavy caliber, structure heaviness, complexity; And the enclosed commutator is to adopt the passage that changes closed conduit in the commutator to change the direction of a stream of water, its advantage is a compact structure, and relative size is little, ne-leakage, shortcoming is that Flow characteristics is changed, and for pipe stream the pulsation influence is arranged also." fluid commutator " disclosed technology of patent announcement CN2195643Y is the flow direction difference that (1) enters fluid commutator, be to enter pipe end from substantially horizontal, enter nozzle through the radial outflow of the aperture of pipe end then, fluid has one 90 ° turning, the influence of convection cell flow field is big, resistance is bigger, and energy consumption is many; (2) supporting of water conservancy diversion nozzle and sealing are different, and the supporting of nozzle utilizes input pipeline, and the connection difficulty that solves in the nozzle rotation process is bigger.

Summary of the invention

Technical problem to be solved in the utility model be overcome the defective of prior art and provide a kind of simple in structure, the flow field resistance is little, energy consumption is low, be applicable to the fluid commutator of the big flow meter of heavy caliber.

The utility model solves the problems of the technologies described above the technological scheme that is adopted: fluid commutator, comprise intake pipe, commutation nozzle and bifurcated pipe, its water outlet communicated with the import of bifurcated pipe respectively after the commutation nozzle was promoted by cylinder, it is characterized in that described intake pipe is connected one with the commutation nozzle by elastomeric seal, the water intake of intake pipe goes to upper and lower vertical layout with the water outlet of commutation nozzle, and the commutation nozzle that promoted by cylinder is fixed as one with rotating shaft again simultaneously.

Two outer ends of described rotating shaft are bearing in the bearing of gimbal axis bearing, and the middle part is by the continuous one of the bearing ring that is positioned at the elastomer outside.

Described commutation nozzle is fixed as one by bearing support and rotating shaft.

Compared with prior art, it is perpendicular flow from the top down that the utility model has adopted the flow direction of fluid, and the influence of convection cell flow field is little, and resistance is also little, so energy consumption is low; Adopted the elastomer linkage structure, the support problem of commutation nozzle and the problem that is tightly connected in the rotation process have been solved, this structure does not have the commutation case, only change the fluid entering angle, it is simple in structure, be applicable in the device of the big flow of heavy caliber to the instantaneous flow detection, and in the detection of big flow, can prevent that fluid from overflowing.

Description of drawings

Fig. 1 is the utility model structural representation.

Fig. 2 is the left side view of Fig. 1.

Embodiment

Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.

The intake pipe 1 of fluid commutator (referring to Fig. 1-2), elastomer 4, commutation nozzle 5 connect one by flange seal, elastomer is made by rubber or nylon, the water outlet 6 of the water intake 2 of intake pipe and commutation nozzle is layout in vertical state, fluid is vertically to enter the intake pipe pipe end, enter nozzle through elastomer, make the flow direction of fluid be vertical configuration always and flow, flow resistance is little.The measure of changing the direction of a stream of water is to adopt cylinder to promote the commutation nozzle, the water outlet of the commutation nozzle realization fluid reversing that communicates with two imports of bifurcated pipe 7 respectively.Elastomer had both solved the sealing problem between intake pipe and the commutation nozzle, had also solved the connectivity problem in the commutation nozzle rotation process.

The commutation nozzle 5 that promoted by cylinder is fixed as one with rotating shaft 9 again simultaneously, this rotating shaft divides left and right two-semiaxle, two outer ends are bearing in the bearing 11 of gimbal axis bearing 10, the middle part is by the bearing ring 3 continuous one that are positioned at elastomer 4 outsides, bearing ring is to connect two halves rotating shaft all-in-one-piece link, is again simultaneously the reinforcer that improves the rotating shaft rigidity.The commutation nozzle is simultaneously by the bearing support 8 and rotating shaft 9 solid weldings of solid welding, and when having formed cylinder promotion commutation nozzle, the relation that realizes fluid reversing is rotated in commutation rotation and bearing support, the rotating shaft of commutation nozzle synchronously.

This commutator cooperate with chronograph accurately the unit's of detection fluid in device by the required time, and and then try to achieve the instantaneous flow of fluid.Because this structure do not have the commutation case, only change the fluid entering angle, like this, the member below the nozzle just can be done just the samely with entering angle, and this is preventing to overflow the particular importance that just seems in flow detector greatly.

Claims

1. fluid commutator, comprise intake pipe (1), commutation nozzle (5) and bifurcated pipe (7), its water outlet (6) communicated with the import of bifurcated pipe (7) respectively after the commutation nozzle was promoted by cylinder, it is characterized in that described intake pipe (1) and commutation nozzle (5) are by elastomer (4) one that is tightly connected, the water intake of intake pipe (2) goes to upper and lower vertical layout with the water outlet (6) of commutation nozzle, and the commutation nozzle that promoted by cylinder is fixed as one with rotating shaft (9) again simultaneously.

2. fluid commutator according to claim 1 is characterized in that two outer ends of described rotating shaft (9) are bearing in the bearing (11) of gimbal axis bearing (10), and the middle part is by the continuous one of the bearing ring (3) that is positioned at elastomer (4) outside.

3. fluid commutator according to claim 1 is characterized in that described commutation nozzle (5) is fixed as one by bearing support (8) and rotating shaft (9).