CN203896890U

CN203896890U - Greenhouse ventilation device

Info

Publication number: CN203896890U
Application number: CN201420323915.1U
Authority: CN
Inventors: 刘连国; 李付荣
Original assignee: TIANJIN BAILI GERMCHIT CULTIVATE CO Ltd
Current assignee: TIANJIN BAILI GERMCHIT CULTIVATE CO Ltd
Priority date: 2014-06-16
Filing date: 2014-06-16
Publication date: 2014-10-29
Anticipated expiration: 2024-06-16

Abstract

The utility model relates to a greenhouse ventilation device, and belongs to the agriculture technical field. The greenhouse ventilation device comprises a rear wall, a spindle, a movable thin film, a greenhouse support and the like. The rear wall is fixedly connected with a wall ridge, the greenhouse support is fixedly connected with the wall ridge, and the spindle is arranged at the upper end of the greenhouse support. A pull rope is wound on the spindle, the spindle is connected with a driven shaft A and a driven shaft B through a string, and the driven shaft A and the driven shaft B are fixed on the greenhouse support. An insect proof net is fixed on the string, and one end of the insect proof net is fixedly connected with one end of the movable thin film. Due to the arrangement of the insect proof net, outside insects can be prevented from entering a greenhouse, so that vegetables in the greenhouse are protected from being hurt by insects, and unnecessary losses are avoided. Due to the arrangement of the driven shaft A and the driven shaft B, the movable thin film or the insect proof net can be reeled into the shafts, the movable thin film or the insect proof net is fixed in the shafts, and at the moment, no matter how hard the wind of the outside blows, the movable thin film or the insect proof net cannot be opened. The greenhouse can be effectively protected, maintenance cost is reduced, and the greenhouse ventilation device is simple in structure and reasonable in design.

Description

A kind of booth ventilation unit

Technical field

The utility model belongs to agricultural technology field, relates in particular to a kind of booth ventilation unit.

Background technology

Booth is the important component part of modern agriculture, the ventilation of booth is the important step of booth production and operation, the development that booth ventilates is determining the developing direction of booth to a certain extent, the development trend that paying attention booth ventilates, the sustainable development of green house is had to very important realistic meaning, but present stage China booth ventilate and also exist a series of problem demanding prompt solutions.

Chinese patent 201210254555.X has announced a kind of ventilator of vegetable greenhouse, be included in the upper film and the lower film that on canopy body, cover, upper film and lower film portion are overlapping, lap upper film is upper, lower film under, on lower film, be fixed with multiple cords corresponding to the region of lap, the other end of described cord is provided with hook, on the ground in canopy body, is provided with retainer ring corresponding to the position of hook.This device can solve the ventilating problem of booth; but there are in actual use some shortcomings; when blowing when too large; this ventilation unit does not have safeguard measure; cause film to start, cause the maintenance in later stage, when ventilation, can make entering of some insects; vegetables are damaged, cause unnecessary loss.

Summary of the invention

In order to solve the problems of the technologies described above, the utility model provides a kind of booth ventilation unit, comprise rear wall, main shaft, active film, driven shaft A, fly net, driven shaft B, cord, stay cord, wall ridge, greenhouse bracket, rear wall is fixedly connected with wall ridge, greenhouse bracket is fixedly connected with wall ridge, main shaft is arranged at greenhouse bracket upper end, stay cord is wrapped on main shaft, main shaft is connected with driven shaft A and driven shaft B by cord, driven shaft A and driven shaft B are fixed on greenhouse bracket, fly net is fixed on cord, and fly net one end is fixedly connected with active film one end.

The beneficial effects of the utility model are: arranging of fly net can prevent entering of extraneous insect, thereby have protected the vegetables in booth not destroyed by insect, have avoided unnecessary loss; Arranging of driven shaft A and driven shaft B can be involved in active film or fly net in axle; active film or fly net are fixed in axle; now; no matter extraneous wind is much; can not raise active film or fly net, effectively protect booth, reduce maintenance cost; and this apparatus structure is simple, reasonable in design.

Brief description of the drawings

Fig. 1 is structural representation of the present utility model;

Fig. 2 is part-structure schematic diagram of the present utility model.

Embodiment

Below in conjunction with accompanying drawing, the utility model is described further:

In figure, 1. rear wall, 2. main shaft, 3. active film, 4. driven shaft A, 5. fly net, 6. driven shaft B, 7. cord, 8. stay cord, 9. wall ridge, 10. greenhouse bracket.

As shown in Figure 1 and Figure 2, rear wall 1 is fixedly connected with wall ridge 9, greenhouse bracket 10 is fixedly connected with wall ridge 9, main shaft 2 is arranged at greenhouse bracket 10 upper ends, stay cord 8 is wrapped on main shaft 2, and main shaft 2 is connected with driven shaft A4 and driven shaft B6 by cord 7, and driven shaft A4 and driven shaft B6 are fixed on greenhouse bracket 10, fly net 5 is fixed on cord 7, and fly net 5 one end are fixedly connected with active film 3 one end.

In the time that booth need to ventilate, pull stay cord 7, main shaft 2 is rotated, main shaft 2 rotates and drives driven shaft A4 and driven shaft B6 to rotate, thereby make cord 7 drive active film 3 and fly net 5 to move, in the time that fly net 5 is involved in a driven shaft A4 part, stop drag stay cord 7, now fly net 5 maintains static, because driven shaft A4 and driven shaft B6 have part fly net 5 to be involved in, make fly net 5 very firm, be difficult for being scraped by strong wind, after ventilation completes, pull cord 7, driven shaft B6 is rollback fly net 5 gradually, in the time that a part of active film 3 is involved in driven shaft B6, stop drag stay cord 8, now active film 3 maintains static, and a part of active film 3 is involved in driven shaft B6, make strong wind be difficult for scraping.

Have been described in detail of the present utility model by embodiment above, but described content is only preferred embodiment of the present utility model, can not be considered to for limiting practical range of the present utility model.All equalization variation and improvement etc. of doing according to the utility model application range, within all should still belonging to patent covering scope of the present utility model.

Claims

1. a booth ventilation unit, comprise rear wall (1), main shaft (2), active film (3), cord (7), stay cord (8), wall ridge (9), greenhouse bracket (10), rear wall (1) is fixedly connected with wall ridge (9), described greenhouse bracket (10) is fixedly connected with wall ridge (9), described main shaft (2) is arranged at greenhouse bracket (10) upper end, described stay cord (8) is wrapped on main shaft (2), it is characterized in that: main shaft (2) is by cord (7) and driven shaft A(4) and driven shaft B(6) be connected, described driven shaft A(4) and driven shaft B(6) be fixed on greenhouse bracket (10), fly net (5) is fixed on cord (7), described fly net (5) one end is fixedly connected with active film (3) one end.