CN2544522Y

CN2544522Y - Pressure compensation irrigation dribbling nozzle

Info

Publication number: CN2544522Y
Application number: CN 02235579
Authority: CN
Inventors: 王国建
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-05-27
Filing date: 2002-05-27
Publication date: 2003-04-16
Anticipated expiration: 2012-05-27

Abstract

The utility model pertains to an improvement of irrigation equipment, in particular to an irrigation dribbling nozzle with an even flow rate when a water pressure changes, and consists of a casing, an inner core and a membrane plate. The casing, the inner core and the membrane plate are concentrically arranged. The bottom part of the casing is provided with a water inlet, and a trepan boring matches and sleeved with an outer diameter of the inner and a water inlet cavity are arranged inside the top. A support rib which supports the membrane plate is arranged inside the water inlet cavity. The top of the inner core is provided with a water outlet, and the bottom part is sequentially provided with a membrane plate table, a water outlet cavity equal to the water inlet cavity, a negative pressure prevention flow passage, and a bypass water flow passage positioned at the side of the membrane plate table and used for communication between the water inlet cavity of the casing and the water outlet cavity of the inner core. The elastic membrane plate is positioned on the membrane plate table of the inner core and supported by the support rib positioned inside the water inlet cavity of the casing. The casing is fixedly sleeved and welded with the outer diameter of the inner core. A dribbling nozzle is divided into two parts by the membrane plate. The utility model has the beneficial effects of unchanged flow rate under the condition of changing of the pressure, which means uniform water outlet quantity, ingenious design, compact and reasonable structure, strong scientificalness, and wide ranges of the selective flow rate.

Description

Pressure-compensated is irrigated water dropper

Technical field

The utility model belongs to the improvement of irrigation installation parts, and the uniform pressure-compensated of flow is irrigated water dropper during particularly a kind of variation in water pressure.

Background technology

Irrigation installation water dropper of the prior art has various ways, and wherein the ubiquity rated pressure allows excursion too small, and pressure is when changing, and water flow also changes thereupon, and is especially uncontrollable during low discharge (10L/H is following); Adjustment sheet under the effect of negative pressure in the water dropper can't restore, and dregs's water phenomenon appears in water dropper; The water dropper pipeline stops up easily; Shell connects insecure, and service life is short.

Summary of the invention

Technical problem to be solved in the utility model is, overcomes above-mentioned defective of the prior art, provides a kind of pressure range that adapts to can continue to keep the uniform pressure-compensated irrigation of irrigation flow water dropper when big.

The utility model solves its technical problem and realizes by the following technical solutions: the utility model utilizes shell, inner core and diaphragm to constitute a kind of irrigation water dropper, and its shell, inner core and diaphragm are provided with one heart, and the bottom of shell is provided with water inlet; Trepanning and the intake antrum that mates suit with the inner core external diameter is set in its top, the brace rod that supports diaphragm is set in the intake antrum; The top of inner core sets out the mouth of a river, and the water chamber that is provided with the diaphragm platform in the bottom in succession, is equal to intake antrum, anti-negative pressure runner and diaphragm platform side are used for the bypass water flowing runner that the shell intake antrum communicates with the inner core water chamber; Flexible sheet places on the inner core diaphragm platform and by the brace rod in the shell intake antrum and supports, and outer cover suit is welded on the inner core external diameter; Irrigating water dropper inside is divided into two by diaphragm.

The delivery port at above-mentioned inner core top is arranged on center or eccentric position.

Above-mentioned anti-negative pressure runner is to have rectangular recessed road.

Above-mentioned inner core diaphragm platform bypass water flowing runner is made the dog runner and is communicated with anti-negative pressure runner and delivery port.

Based on above structure, diaphragm will be irrigated water dropper inside and will be divided into two, enter the outer shell one side intake antrum of diaphragm when water flows in the water dropper from the water inlet of shell, and enter into inner core one side water chamber in the water dropper, flow out through the delivery port of runner from inner core top by inner core bypass water flowing runner.

The beneficial effects of the utility model are: by above technical scheme as can be known, under the structure configuration of excellence, have following advantage at least: (1) pressure changes, and flow is constant, promptly obtains uniform water yield; (2) owing to designed anti-negative pressure runner, solved dregs's water phenomenon of water dropper and improved anti-clogging; (3) because the utility model design is ingenious, and compact conformation is reasonable, scientific strong, alternative range of flow is wide.

Description of drawings

Fig. 1 is that the utility model pressure-compensated is irrigated the emitter structure schematic diagram;

Fig. 2 is a shell vertical view of the present utility model;

Fig. 3 is an inner core upward view of the present utility model;

Fig. 4 is an inner core dog runner schematic diagram of the present utility model;

Fig. 5 is that delivery port of the present utility model is arranged on the center outline drawing;

Fig. 6 is that delivery port of the present utility model is arranged on the eccentric position outline drawing.

Among the figure: 1 shell, 2 inner cores, 3 diaphragms, 4 water inlets, 5 trepannings, 6 intake antrums, 7 brace rods, 8 delivery ports, 9 diaphragm platforms, 10 water chambers, 11 anti-negative pressure runners, 12 water flowing runners.

The technical characterictic of the utility model pressure-compensated being irrigated water dropper below in conjunction with specific embodiment is described in further details.

Embodiment 1: see shown in the accompanying

drawing

1,2,3,5 that the utility model is provided with one heart by shell 1, inner core 2 and diaphragm 3 and constitutes; The bottom of shell 1 is provided with water inlet 4; Trepanning 5 and the intake antrum 6 that mates suit with inner core 2 external diameters is set in its top, four brace rods 7 that support diaphragm evenly are set in the intake antrum 6; The top of inner core 2 sets out the mouth of a river 8, and the water chamber 10 that is provided with diaphragm platform 9 in the bottom in succession, is equal to intake antrum, anti-negative pressure runner 11 and diaphragm platform side are used for the bypass water flowing runner 12 that the shell intake antrum communicates with the inner core water chamber; The flexible sheet 3 that silastic material is made places on the inner core diaphragm platform 9 and by four brace rods in the shell intake antrum 7 and supports, and shell 1 suit is welded on the inner core external diameter; Irrigating water dropper inside is divided into two by diaphragm.

Embodiment 2: see shown in Fig. 4,5,6 that the utility model is on the basis of embodiment 1, the delivery port 8 at above-mentioned inner core 2 tops is arranged on center or for a change inner core cavity space and the eccentric position that is provided with.Above-mentioned anti-negative pressure runner 11 is to have rectangular recessed road.Above-mentioned inner core diaphragm platform bypass water flowing runner 12 is made the dog runner for its water outlet precision of raising and is communicated with anti-negative pressure runner 11 and delivery port 8.

The operation principle that the utility model is irrigated water dropper is as follows: water flows into from the water inlet 4 of shell 1 and irrigates in the shell intake antrum 6 that water droppers are cut apart by diaphragm 13, water is flow into by the water flowing runner 12 of diaphragm bypass and irrigates in inner core 2 water chambers 10 that water dropper cut apart by diaphragm, flows out from inner core delivery port 8 through anti-negative pressure runner 11 again.When intake pressure fluctuates, become the big diaphragm rated pressure that surpasses as intake pressure, the diaphragm of Ya Waning will be to the other end depression of water chamber when the time comes, so that the opposite side space of irrigating the water dropper inner core diminishes, runner is also corresponding to diminish, but this moment, flow velocity can increase along with pressure, made flow constant.Its rated pressure scope is controlled at 0.5KG-4.5KG.When the pressure of water hanged down, the depression degree of diaphragm was little, and it is big that the opposite side space of inner core becomes, and it is big that runner becomes, but flow velocity is slack-off, makes flow constant.Be the flow velocity 2L/H of controlled droplet head.Hence one can see that, and the variation of water pressure size does not have big influence to the flow of water, can obtain uniform water yield.Owing to designed anti-negative pressure runner, solved dregs's water phenomenon of water dropper, runner is designed to circle, strip, dog runner raising anti-clogging.

In sum, the utility model structural design is ingenious rationally, and use can obtain optimum efficiency.

Claims

1, a kind of pressure-compensated is irrigated water dropper, is made of shell, inner core and diaphragm, and it is characterized in that: its shell, inner core and diaphragm are provided with one heart, and the bottom of shell is provided with water inlet; Trepanning and the intake antrum that mates suit with the inner core external diameter is set in its top, the brace rod that supports diaphragm is set in the intake antrum; The top of inner core sets out the mouth of a river, and the water chamber that is provided with the diaphragm platform in the bottom in succession, is equal to intake antrum, anti-negative pressure runner and diaphragm platform side are used for the bypass water flowing runner that the shell intake antrum communicates with the inner core water chamber; Flexible sheet places on the inner core diaphragm platform and by the brace rod in the shell intake antrum and supports, and outer cover suit is welded on the inner core external diameter; Irrigating water dropper inside is divided into two by diaphragm.

2, pressure-compensated according to claim 1 is irrigated water dropper, and it is characterized in that: the delivery port at above-mentioned inner core top is arranged on center or eccentric position.

3, pressure-compensated according to claim 1 is irrigated water dropper, and it is characterized in that: above-mentioned anti-negative pressure runner is to have rectangular recessed road.

4, pressure-compensated according to claim 1 is irrigated water dropper, and it is characterized in that: above-mentioned inner core diaphragm platform bypass water flowing runner is made the dog runner and communicated with anti-negative pressure runner and delivery port.