CN2650496Y

CN2650496Y - Throttler and microirrigating apparatus therewith

Info

Publication number: CN2650496Y
Application number: CN 03209502
Authority: CN
Inventors: 张克毅
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-09-11
Filing date: 2003-09-11
Publication date: 2004-10-27
Anticipated expiration: 2013-09-11

Abstract

A throttling device is provided, which comprises a shell (1) formed by deformable thin wall, the inner cavity is filled with a pored elastic block (2), pressure water is flown outside from an outlet (4) after entered from an inlet (3) through the pore of the elastic block (2); moreover, the size of pore is reversely changed with the water pressure in a delivery pipe (7). The net structure and energy consumption channel varied with the dynamic variation of water pressure can facilitate the device with excellent pressure compensation and antiblocking performances, thus the utility model is very suitable for the water-saving agricultural field to form a micro-irrigation device, such as a micro-drip nozzle, a drip-irrigation pipe, and a drip-irrigation hose. etc.

Description

Throttling arrangement and the micro-irrigation emitter that comprises this device

The utility model relates to a kind of being fixed on pressure liquid-transport pipe-line or the container inner wall, in order to the throttling arrangement of automatic adjusting fluid flow.The utility model is specially adapted to construct micro-irrigation emitter in the water-saving agriculture field, as micro drop head and irrigate band, drip irrigation pipe etc.

Good micro-irrigation emitter should possess two important performances, i.e. pressure compensation and block resistance.The former can make up-and-down region obtain to irrigate uniformly, and the latter can make irrigation system be suitable for relatively poor water quality and use limit more all the year round.

On structure, present widely used irrigator, as various types of labyrinth types and pressure-compensated micro drop head, the water stream channel energy dissipating decompression of a long and narrow and fixed apertures is mostly adopted in the irrigate band.This tactic pattern itself has greatly limited the raising of irrigator block resistance, and very high to the requirement on machining accuracy of energy dissipating passage and pressure compensation mechanism.

The purpose of this utility model is to provide a kind of throttling arrangement of new construction, and the micro-irrigation emitter of constructing with this throttling arrangement has good pressure compensation and block resistance, and simple in structure, is easy to processing.

The purpose of this utility model is achieved in that the described throttling arrangement of this utility model comprises shell, inflow entrance, flow export and bluff body.

Described shell be one by outer wall around forming the tubular member of inner chamber, the whole or at least one parts of described outer wall are made of the deformable thin-walled.Described inflow entrance and flow export are tubular member, and there is the fluid passage centre, and they lay respectively at the two ends of described shell.

It is characterized in that described bluff body is self to be covered with the block thing of elastomer in space, be wrapped among the described inner chamber by the outer wall of described shell and described inflow entrance and flow export.

Described flow export is fixed on pressure liquid-transport pipe-line or the container inner wall, and be communicated with the outlet on described pipeline or the chamber wall, make pressure fluid to enter among the inner chamber of described shell through described inflow entrance, and the space of the block thing of described elastomer of flowing through, flow to pressure liquid-transport pipe-line or external container from described flow export.

Simultaneously, the outer surface of described shell bears the pressure of pressure liquid-transport pipe-line or liquid in container, and described deformable thin-walled is inwardly shunk.When fluid pressure raise, the contraction of described deformable thin-walled strengthened, and the volume of the block thing of described elastomer is compressed, and described space reduces thereupon.Otherwise when fluid pressure reduced, described space increased.The Back Up in this fluid pressure and current space makes this throttling device have good pressure compensation performance.

As can be seen from the above description, the most remarkable difference of throttling arrangement of the present utility model and prior art is that the energy dissipating relief passage of this throttling device is not the single passage of machine-shaping in advance, but the space in the described bluff body.This space has network structure, the feature of elasticity and dynamic change when being squeezed.The energy dissipating passage of this structure does not have fixed path and aperture, and impurity particle and the chemical sediment etc. that enters wherein had very big tolerance, can not cause obstruction.And along with the relaxation action when the variation in water pressure of current scour and described space, impurity particle can constantly be discharged from described flow export.This makes this throttling device have extremely strong antiblocking ability.

Morphological feature by described bluff body is divided, and throttling arrangement of the present utility model has following three kinds of main types:

1。Described bluff body is formed by a plurality of submissile gonosome block set.Space between the described little block constitutes water stream channel.

2。Described bluff body is the sponge that itself is covered with the space, and wherein the space constitutes water stream channel.

3。Fine little shape thing that described bluff body is formed for the One's name is legion filament, wherein the space constitutes water stream channel.

The utility model is simple in structure, does not have the high accuracy parts, therefore is easy to processing, and production cost is low, is particularly suitable for the valve of the various micro drop head of structure, irrigate band, drip irrigation pipe and controlled water flow amount in the water-saving agriculture field etc.

Concrete structure of the present utility model is provided by following examples and accompanying drawing thereof.

Fig. 1 is the profile according to a kind of pipe following formula micro drop head that the utility model proposes.

This device comprises that shell (1) made by elastic rubber tube.Bluff body (2) is the core that is made of spongy or fine little shape elastomer.Inflow entrance (3) is the zone of the porous in shell (1) end; Flow export (4) is a hard parts, makes with duroplasts usually, and is tightly connected with shell (1).Its central through hole (5) one ends are communicated with the inner chamber of shell (1), and the other end leads to outside the water delivery hollow billet (7), and irrigation water is from these several outflows.The outer garden alveolus (6) of flow export (4) is used for being tightly connected with the end of water delivery hollow billet (7).Flow export (4) also has an ear position (8) of outwards stretching, and this throttling device is packed into from the end of water delivery hollow billet (7) or takes out with convenient manual operations.Complete micro drop head of the common formation in the end of this throttling device and water delivery hollow billet (7).

Press water at first arrives the end regions of water delivery hollow billet (7) after irrigation operation begins, with shell (1) and bluff body (2) compression.Simultaneously press water enters the inner chamber of shell (1) and the space in the middle of the described bluff body from inflow entrance (3) and flows out outside the water delivery hollow billet (7) from the centre bore (5) of flow export (4), when hollow billet (7) end regions variation in water pressure, shell (1) and bluff body (2) all can produce corresponding tension and relaxation action, make the discharge of this micro drop head keep stable.

This structure also has characteristics to be, shell (1) can be separately as the whole processing of coiling of the microtubule that drips together with bluff body (2).And at the irrigation operation scene, the required microtubule length of each water dropper then can according to actual water the water yield by hand or special equipment dynamically intercept.The microtubule of cutting that drips is inserted flow export (4), promptly can be made into required micro path emitter.Use this micro path emitter can accurately control the water yield of every water dropper in the irrigated area, can also reduce the cost of drip irrigation emitter significantly.

Fig. 2 is the profile according to a kind of drip irrigation zone that the utility model proposes.

This drip irrigation zone is the water-supply-pipe (5) that is connected in pressure water source and on this length of tube direction The compartment of terrain has a plurality of water dropping openings (6). Throttling arrangement shown in Figure 2 is fixed on water dropping openings (6) On the inner surface of place's water-supply-pipe (5). The structure of this throttling arrangement and throttling shown in Figure 1 dress Putting basic identically, also is by shell (1), bluff body (2) inflow entrance (3) and flow export (4) Form. Its main distinction is that the cross section of this device housing (1) is ellipse garden shape, flows out Mouth (4) is opened on the side direction of shell (1), can make so whole throttling arrangement be attached to water delivery On the inwall of pipe (5), so that the flattening of whole piece drip irrigation zone, bending and coil etc.

Claims

1, a kind of being fixed on pressure liquid-transport pipe-line or the container inner wall in order to regulate the throttling arrangement of fluid flow, this device comprises shell, inflow entrance, flow export and bluff body;

Described shell be one by outer wall around forming the part of inner chamber, the whole or at least one parts of described outer wall are made of the deformable thin-walled; Described inflow entrance and flow export are tubular member, and there is the fluid passage centre, and lay respectively at the two ends of described shell;

It is characterized in that described bluff body for self be covered with the space the block thing of elastomer, by the outer wall of described shell, and described inflow entrance and flow export are wrapped among the described inner chamber;

Described flow export is communicated with outlet on pressure liquid-transport pipe-line or the chamber wall, make pressure fluid to enter in the inner chamber of described shell, and the space of the block thing of described elastomer of flowing through flow to pressure liquid-transport pipe-line or external container from described flow export through described inflow entrance;

The outer surface of described shell bears the pressure of pressure liquid-transport pipe-line or liquid in container simultaneously, the deformable thin-walled of described shell is inwardly shunk according to the variation of described fluid pressure, the sectional area of described inner chamber changes thereupon, thereby cause the space of the block thing of described elastomer to change, with the flow through flow of this throttling device liquid of adjusting.

2,, it is characterized in that the block thing of described elastomer is quantity and forms greater than 1 little block set according to the described device of claim 1.

3,, it is characterized in that the block thing of described elastomer is a sponge according to the described device of claim 1.

4,, it is characterized in that the block thing of described elastomer is fine little shape thing that filament constitutes according to the described device of claim 1.

5,, it is characterized in that the part of described shell or the inwall of whole outer wall and pressure liquid-transport pipe-line or container are connected in one according to the described device of claim 1.

6, the micro-irrigation emitter that constitutes according to the described device of claim 1 comprises:

Following drip irrigation pipe and irrigate band, this drip irrigation pipe and irrigate band are the water-supply-pipes that is connected in pressure water source, and go up at interval a plurality of water dropping openings that have along its length at this pipe, the described throttling arrangement of claim 1 is fixed on the water-supply-pipe inner surface at described water dropping openings place, and the flow export of described throttling arrangement is communicated with corresponding water dropping openings on the described water-supply-pipe;

And following micro drop head, this micro drop head is the water storage container that its inner chamber is communicated with penstock, have water dropping openings on the described water storage container wall, the described throttling arrangement of claim 1 is fixed on the water storage container inner surface at described water dropping openings place, and the flow export of described throttling arrangement is communicated with the water dropping openings of described water storage container;

And following micro drop head, this micro drop head is the water-supply-pipe that is connected in pressure water source, and the described throttling arrangement of claim 1 is fixed on the end of described water-supply-pipe, makes described flow export become the delivery port of described water-supply-pipe.