CN201001318Y

CN201001318Y - Pressure regulating by-pass device

Info

Publication number: CN201001318Y
Application number: CNU2007200050538U
Authority: CN
Inventors: 罗俊杰; 康恩祥; 朱润身; 张开乾; 刘保国; 张光明; 杨智
Original assignee: GANSU ACADEMY OF AGRICULTURAL SCIENCES
Current assignee: GANSU ACADEMY OF AGRICULTURAL SCIENCES
Priority date: 2007-02-14
Filing date: 2007-02-14
Publication date: 2008-01-09
Anticipated expiration: 2017-02-14

Abstract

The utility model pertains to a pressure-regulating bypass device for sowing. The prior bypass device cannot solve the problem of that self-flow micro-irrigation system can only use a limited water pressure and can hardly meet the required pressure for the pressure requirement of the irrigation system so that the water pressure can hardly reach the irrigation area. The utility model solves above problem by the technical proposal that the pressure-regulating bypass device comprises a bypass pipe and a pressure-regulating nozzle, wherein the upper part of the bypass pipe is a bypass water inlet; the lower part of the bypass pipe is a connection mouth for the pressure-regulating nozzle; the upper part of the pressure-regulating nozzle is a water inlet pipe; the lower part of the pressure-regulating nozzle is a water outlet pipe; the connection mouth of the pressure-regulating nozzle and the water inlet pipe are connected by the screw thread; internal diameter of the water outlet pipe is smaller than the internal diameter of the water inlet pipe. The utility model has the benefiting effect that water shedding and pressure functions are integrated so that the water output of the capillary is even and consistent; the device is made of a high-density polyethylene, thereby having a long service life; the installation and disassembly is convenient and fast and the equipment is not easy to get broken.

Description

A kind of pressure regulation bypass device

Technical field

The utility model relates to the irrigation installation field, relates in particular to a kind of bypass device.

Background technology

Cumulative year after year along with the slight irrigation area, the development of slight irrigation equipment and connector thereof is in important status, irrigation system mainly provides power by water pump, need consumed power to satisfy the normal operation of system, therefore for energy savings, developed the self-flowing type irrigation system, gravity irrigation system hydraulic pressure is generally built tens of or hundreds of cubic metres the small-sized cistern of volume on the top, arable land that the nature discrepancy in elevation (5-10 rice) is arranged, utilize hillside physical features drop to produce nature hydraulic pressure, the irrigation system that connects cistern and field with plastic tube, the bypass device connects in the irrigation system to be responsible for and arm, current enter each bar arm by the bypass device, the hydraulic pressure gravity irrigation that utilizes geopotentia to produce, but the hydraulic pressure that utilizes geopotentia to produce is limited, be difficult to satisfy the pressure requirement of irrigation system, cause water almost can't evenly arrive at the irrigation district, and traditional bypass device can not address this problem.

Summary of the invention

The purpose of this utility model provides a kind of pressure regulation bypass device, it is limited to have solved the available hydraulic pressure of self-flowing type irrigation system, be difficult to satisfy the pressure requirement of irrigation system, cause water almost can't evenly arrive at the problem of irrigation district, realize the uniform pressure of low-pressure pipe irrigation hollow billet is supplied water.

The technical scheme that realizes above-mentioned purpose is:

A kind of pressure regulation bypass device, comprise the bypass pipe and the pressure regulation mouth that adopt high density polyethylene (HDPE) to make, the top of described bypass pipe is water by pass inlet neck, the bypass pipe bottom is a pressure regulation mouth connector, and the middle part of bypass pipe is provided with solid pipe nut, at water by pass inlet neck on the bypass pipe with manage admittedly handle is arranged between the nut, the top of described pressure regulation mouth is water inlet pipe, the bottom of pressure regulation mouth is an outlet pipe, and described pressure regulation mouth connector is threaded with described water inlet pipe, and the internal diameter of described outlet pipe is less than the internal diameter of water inlet pipe.

During the work of pressure regulation bypass device, be full of the fluid of bypass pipe, when flowing through the pressure regulation mouth, a fluid stream will form local contraction at water inlet pipe and outlet pipe intersection, mean flow rate increases in the contracted section thereby make, static pressure rises in the bypass pipe, so it is poor to produce static pressure between the water inlet pipe of pressure regulation mouth and outlet pipe, rate of flow of fluid is bigger, and the static pressure difference is bigger, when fluid flows through the pressure regulation mouth, the energy that is converted to kinetic energy is many more, the outlet pipe flow rate of water flow increases, and makes current evenly arrive at the irrigation district, realizes the even water outlet requirement of irrigation system.

The utlity model has following beneficial effect:

Take into account two kinds of functions of branch water and supercharging, make hollow billet water outlet uniformity; Make long service life by high density polyethylene (HDPE); Installing/dismounting is convenient quick, not damage equipment.

Description of drawings:

Fig. 1 is the cutaway view of the described pressure regulation bypass of the utility model embodiment device;

Fig. 2 is the cutaway view of the pressure regulation mouth of the described pressure regulation bypass of the utility model embodiment device.

Among the figure:

1, bypass pipe; 2, pressure regulation mouth; 3, water by pass inlet neck; 4, pressure regulation mouth connector; 5, manage nut admittedly; 6, handle; 7, water inlet pipe; 8, outlet pipe.

Embodiment

Embodiment:

The described pressure regulation bypass of present embodiment device, comprise the bypass pipe 1 and the pressure regulation mouth 2 that adopt high density polyethylene (HDPE) to make, the top of described bypass pipe 1 is water by pass inlet neck 3, bypass pipe 1 bottom is a pressure regulation mouth connector 4, the middle part of bypass pipe 1 is provided with solid pipe nut 5, at water by pass inlet neck 3 on the bypass pipe 1 with manage admittedly handle 6 is arranged between the nut 5, the top of described pressure regulation mouth 2 is water inlet pipe 7, the bottom of pressure regulation mouth 2 is an outlet pipe 8, described pressure regulation mouth connector 4 is threaded with described water inlet pipe 7, and the internal diameter of described outlet pipe 8 is less than the internal diameter of water inlet pipe 7.

Claims

1, a kind of pressure regulation bypass device, comprise bypass pipe, the top of described bypass pipe is water by pass inlet neck, it is characterized in that: the bypass pipe bottom is a pressure regulation mouth connector, described pressure regulation mouth connector place is connected with the pressure regulation mouth, the top of described pressure regulation mouth is water inlet pipe, and the bottom of pressure regulation mouth is an outlet pipe, and the internal diameter of described outlet pipe is less than the internal diameter of water inlet pipe.

2, pressure regulation bypass device according to claim 1, it is characterized in that: the middle part of described bypass pipe is provided with solid pipe nut, at water by pass inlet neck on the bypass pipe with manage admittedly handle is arranged between the nut.