CN2595137Y

CN2595137Y - Wenturi fertilizer injector with one-way valve

Info

Publication number: CN2595137Y
Application number: CN 03203792
Authority: CN
Inventors: 杨万龙; 宋士良; 李娟�; 刘春来
Original assignee: TIANJIN WATER CONSERVANCY INST
Current assignee: TIANJIN WATER CONSERVANCY INST
Priority date: 2003-02-21
Filing date: 2003-02-21
Publication date: 2003-12-31
Anticipated expiration: 2013-02-21

Abstract

The utility model discloses a venturi fertilizer injector with a one-way valve. The utility model comprises a pipe body which is integrally composed of a suction chamber, a hollow throat and a diffusion pipe, wherein, a nozzle is inserted into ingress positioned in the suction chamber of the pipe body, and a liquid inlet at one side of the pipe wall of the suction chamber is connected with a one-way inverted valve which is communicated with the liquid inlet. The utility model has the advantages of reasonable structural design and small water head loss. Compared with national similar products, the utility model reduces 15%. The utility model has good fertilizer sucking performance, and the fertilizer can be sucked under the condition of low pressure differences of an inlet and an outlet of a venturi. Because the utility model is provided with the one-way valve, water can not flow back to a fertilizer liquid barrel under any condition so that overflow can be not generated to cause fertilizer liquid loss and crops damage, and the utility model is safe for use. Meanwhile, when the utility model is arranged in a drip irrigation system, an additional valve can be removed, operation and use are more convenient, and investments are also saved. The utility model is suitable for mixing the water and the fertilizer in the drip irrigation system of installation agriculture, and is suitable for mixing any two kinds of liquid.

Description

The venturi fertilizer injector of band check valve

Technical field

The utility model relates to a kind of crops and uses the liquid manure mixing arrangement, particularly a kind of venturi fertilizer injector that is used for to the band check valve of crops fertilising.

Background technology

Venturi fertilizer injector is to be used for a kind of device that industrialized agriculture (greenhouse, booth) drip irrigation system liquid manure mixes, domestic existing venturi fertilizer injector fertilizer-sucting performance is poor at present, the loss of flood peak is big, the fertilzer sucking pipe road does not have non-return valve, when pressure is low, water can occur and flow backward in the solution bucket from the venturi suction line and overflow, both cause the waste of solution, can burn the crop around the bucket again to death.

As shown in Figure 1, existing venturi fertilizer injector is installed in the drip irrigation system, promptly is installed in the stem of every Donges light drip-irrigation system, and venturi fertilizer injector is forward and backward must mounted valve 2,3.Open valve 2,3 during fertilising earlier, progressively reduce the aperture of valve 1 again, the venturi fertilizer injector inlet pressure is raise gradually, produce negative pressure at venturi fertilizer injector trunnion place, solution suction line system in the solution bucket mixed with water and carry out fertilizer irrigation, fertilising finishes, valve-off 1,2,3.By the venturi fertilizer injector practical application as can be seen: complex structure, need 3 valves to control, comparatively trouble operates.

Summary of the invention

Technical problem to be solved in the utility model is, provides a kind of simple in structure, simple to operate, easy to use, and fertilizer-sucting performance is good, water flows backward to the band check valve of spillover in the solution bucket from the venturi suction line venturi fertilizer injector do not occur.

The technical scheme that the utility model adopted is: a kind of venturi fertilizer injector with check valve, include the body of forming by suction chamber, trunnion, anemostat one, insert nozzle in the porch that is positioned at the body suction chamber, be connected with the unidirectional non-return valve that communicates with it at the inlet place of suction chamber tube wall one side.

The utility model reasonable in design, the loss of flood peak is little, reduces by 15% than domestic like product, and fertilizer-sucting performance is good, can inhale fertilizer under the lower situation of venturi import and export differential pressure; Because of having check valve, it is excessive to make water under any circumstance can not flow back to the interior generation of solution bucket, causes solution loss and crop damage, safe in utilization.Be installed in simultaneously in the drip irrigation system, can remove the valve 3 among Fig. 1, manipulate more conveniently, also saved investment.Be applicable to that the liquid manure in the industrialized agriculture drip irrigation system mixes, and is applicable to that also any two kinds of liquid mix.

Description of drawings

Fig. 1 is the scheme of installation of existing venturi fertilizer injector in drip irrigation system;

Fig. 2 is the structural representation of the venturi fertilizer injector of the utility model band check valve;

Fig. 3 is the lateral plan of Fig. 2;

Fig. 4 is the structural representation of unidirectional non-return valve among Fig. 2.

Wherein:

1,2,3: valve; 4: venturi fertilizer injector;

5: the solution bucket; 6: fertilzer sucking pipe

7: suction chamber 8: trunnion

9: anemostat 10: nozzle

11: unidirectional non-return valve 12: connector

13: check valve 14: drip irrigation pipe

15: arm

Embodiment

Provide specific embodiment below in conjunction with accompanying drawing, further specify the utility model and how to realize.

As shown in Figure 2, the venturi fertilizer injector of band check valve, include the body of forming by suction chamber 7, trunnion 8, anemostat 9 one, insert nozzle 10, be connected with the unidirectional non-return valve 11 that communicates with it at the inlet place of suction chamber 7 tube walls one side in the porch that is positioned at body suction chamber 7.

As shown in Figure 3, unidirectional non-return valve 11 is to be made of jointly the connector 12 that links to each other with the inlet of tube wall one side of suction chamber 7, the check valve 13 that is positioned at connector 12.It is tubular that the structure of connector 12 is that the top that links to each other with the tube wall inlet is divided into, and the bottom that links to each other with the solution device is divided into the structure of conical hopper.

Its operation principle: the pressure flow body penetrates by nozzle 10, under jet action, suction chamber 7 produces negative pressure, inhaling a fertile mouthful check valve 13 opens, solution is sucked into suction chamber 7, in the exit of nozzle 10 because jet and sucked liquid generation momentum-exchange, latter's flow velocity is increased, pressure reduces, water and solution further mix in the porch of trunnion 7 and trunnion 7, and carry out energy exchange, and both speed are gradually consistent in the exit of trunnion 7 with concentration, by anemostat 9 kinetic energy of fluid-mixing is converted into pressure energy, is sent to pipe network system.

Claims

1. venturi fertilizer injector with check valve, include the body of forming by suction chamber 7, trunnion 8, anemostat 9 one, insert nozzle 10 in the porch that is positioned at body suction chamber 7, it is characterized in that, be connected with the unidirectional non-return valve 11 that communicates with it at the inlet place of tube wall one side of suction chamber 7.

2. the venturi fertilizer injector of band check valve according to claim 1 is characterized in that described unidirectional non-return valve 11 is to be made of jointly the connector 12 that links to each other with the inlet of tube wall one side of suction chamber 7, the check valve 13 that is positioned at connector 12.