CN111713318B

CN111713318B - Air supply device for greenhouse

Info

Publication number: CN111713318B
Application number: CN202010755450.7A
Authority: CN
Inventors: 潘碧琼
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-07-31
Filing date: 2020-07-31
Publication date: 2022-04-29
Anticipated expiration: 2040-07-31
Also published as: CN111713318A

Abstract

The invention discloses an air supply device for a greenhouse, which comprises a base, wherein an installation table is fixedly installed on the outer surface of the top of the base through welding, an arc-shaped groove is formed in the outer surface of the top of the installation table, an air supply fan is arranged above the installation table, the air supply fan is installed in the arc-shaped groove formed in the top of the installation table in an embedded mode, a dust cover is fixedly installed at the input end of the air supply fan through bolts, a conveying pipeline is detachably installed at the output end of the air supply fan, and a stop valve is arranged in the middle of the conveying pipeline. The air supply device for the greenhouse is provided with the conveying pipeline, the flow dividing pipeline, the stop valve, the diffusion nozzle, the first flow increasing pipeline, the second flow increasing pipeline and the flow limiting nozzle, and can perform air cooling on the air supply fan and improve the air flow conveying capacity, so that the air supply working efficiency is improved, and a better use prospect is brought.

Description

Air supply device for greenhouse

Technical Field

The invention relates to the technical field of air supply of greenhouses, in particular to an air supply device for a greenhouses.

Background

The greenhouse is also called a greenhouse. Can transmit light, keep warm (or heat), and is used for cultivating plants. In seasons unsuitable for plant growth, the method can provide the growth period of the greenhouse and increase the yield, and is mainly used for cultivating or raising seedlings of plants like warm vegetables, flowers and trees in low-temperature seasons. The types of greenhouses are various, and the greenhouses can be divided into a great number according to different roof truss materials, lighting materials, shapes, heating conditions and the like. The types of the greenhouse comprise a planting greenhouse, a breeding greenhouse, an exhibition greenhouse, an experiment greenhouse, a catering greenhouse, an entertainment greenhouse and the like; the greenhouse system comprises a heating system, a heat preservation system, a cooling system, a ventilation system, a control system, an irrigation system and the like. The existing greenhouse air supply device has certain defects when in use, can generate overheating phenomenon in continuous operation, and has certain adverse effects because the failure occurrence rate is improved due to the fact that the air supply device operates in an overheating environment.

Disclosure of Invention

The invention mainly aims to provide an air supply device for a greenhouse, which can effectively solve the problems in the background technology.

In order to achieve the purpose, the invention adopts the technical scheme that:

an air supply device for a greenhouse comprises a base, wherein the outer surface of the top of the base is fixedly provided with a mounting table through welding, the outer surface of the top of the mounting table is provided with a cambered groove, an air supply fan is arranged above the mounting table, the air supply fan is embedded in a cambered groove formed in the top of the mounting table, the input end of the air supply fan is fixedly provided with a dust cover through a bolt, the output end of the air supply fan is detachably provided with a conveying pipeline, the middle part of the conveying pipeline is provided with a stop valve, the outer wall of the conveying pipeline is fixedly connected with a shunt pipeline, the shunt pipeline and the conveying pipeline are welded in a seamless mode, the inside of the diversion pipeline is communicated with the inside of the conveying pipeline, the direction of the free end of the diversion pipeline is opposite to that of the free end of the conveying pipeline, and the free end of the diversion pipeline extends to the outer wall of the air supply fan.

Preferably, be provided with the clamp between reposition of redundant personnel pipeline and the air supply fan, the outer wall fixed connection of reposition of redundant personnel pipeline through clamp and air supply fan, the free end fixed mounting of reposition of redundant personnel pipeline has the diffusion shower nozzle.

Preferably, the bottom of the base is fixedly provided with a rubber pad in a sticking mode through an adhesive, the base is provided with four groups of reserved mounting hole sites, the rubber pad is provided with four groups of through holes, and the through holes are coaxially aligned with the reserved mounting hole sites.

Preferably, the output end of the air supply fan is fixedly provided with a first flange, one end of the conveying pipeline close to the air supply fan is fixedly provided with a second flange, and the first flange and the second flange are detachably connected through bolts.

Preferably, the inside fixed mounting of pipeline has the flow restriction mouth, pipeline's outer wall fixed mounting has first flow increasing pipeline and second flow increasing pipeline, and first flow increasing pipeline and second flow increasing pipeline symmetry set up, first flow increasing pipeline, second flow increasing pipeline all communicate with each other with pipeline's inside.

Preferably, four sets of stop washers are arranged at the top of the base, the stop washers are coaxially aligned with the reserved mounting holes, a strong glue is arranged between the base and the stop washers, and the top of the base is fixedly connected with the stop washers through the strong glue.

Compared with the prior art, the invention has the following beneficial effects: the utility model relates to an air supply device for a greenhouse, which comprises a conveying pipeline, a shunt pipeline, a stop valve, a diffusion nozzle, a first flow increasing pipeline, a second flow increasing pipeline and a flow limiting nozzle, wherein the stop valve can control the opening and closing of an internal channel of the conveying pipeline, when an air supply fan has an overheating phenomenon, the stop valve is closed, air flow is blocked at the stop valve, the flow direction is changed, the air flow is discharged to the vicinity of the outer wall of the air supply fan through the shunt pipeline and the diffusion nozzle, the air supply fan is cooled by air cooling, the diffusion nozzle can increase the diffusion area of the air flow, thereby improving the air cooling effect, in addition, the air flow speed can be improved by the air supply fan, the increase of the flow speed is known along with the reduction of the fluid pressure according to Bernoulli's law, when the fluid passes through the conveying pipeline, the air in the external environment is sucked through the low-pressure adsorption principle, the air in the external environment enters the conveying pipeline through the shunt pipeline, the air flow is mixed with the air flow, the final output quantity is large, the input quantity of the air supply fan is large, the air supply time consumption can be shortened, the air supply working efficiency is improved, a flow limiting nozzle is arranged in the conveying pipeline, when the air flow passes through the flow limiting nozzle, the air flow passes through the reduced overflowing section, the flow speed of the air flow is increased, the flow rate is inversely proportional to the flow cross section, a Venturi effect is generated, low pressure is formed near the flow limiting nozzle, air in the external environment is sucked by the principle of low-pressure adsorption, the air in the external environment enters the conveying pipeline through the first flow-increasing pipeline and the second flow-increasing pipeline, mixing with air flow, the final output is large, the input of the air supply fan is increased, the conveying capacity is further increased, thereby improve air supply work efficiency, do benefit to people and use, whole be used for warmhouse booth air supply arrangement simple structure, convenient operation, the effect of use is better for traditional mode.

Drawings

Fig. 1 is a front view of an air supply device for a greenhouse of the present invention.

Fig. 2 is an enlarged view of a in fig. 1 for an air supply device of a greenhouse of the present invention.

Fig. 3 is a schematic view of the internal structure of a conveying pipeline in the air supply device of the greenhouse of the invention.

Fig. 4 is a structural diagram of the air supply device for the greenhouse with the addition of the arc plate.

In the figure: 1. an air supply fan; 2. a dust cover; 3. a delivery conduit; 4. a diversion pipeline; 5. a stop valve; 6. a first flow increasing conduit; 7. a second flow increasing conduit; 8. a rubber pad; 9. clamping a hoop; 10. a diffusion nozzle; 11. a first flange; 12. a second flange; 13. a flow-limiting nozzle; 14. an installation table; 15. a base.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

As shown in fig. 1-3, an air supply device for a greenhouse comprises a base 15, a mounting table 14 is fixedly installed on the outer surface of the top of the base 15 through welding, an arc groove is formed in the outer surface of the top of the mounting table 14, an air supply fan 1 is arranged above the mounting table 14, the air supply fan 1 is installed in the arc groove formed in the top of the mounting table 14 in an embedded mode, a dust cover 2 is fixedly installed at the input end of the air supply fan 1 through bolts, a conveying pipeline 3 is detachably installed at the output end of the air supply fan 1, a stop valve 5 is arranged in the middle of the conveying pipeline 3, a diversion pipeline 4 is fixedly connected to the outer wall of the conveying pipeline 3, seamless welding is carried out between the diversion pipeline 4 and the conveying pipeline 3, the inside of the diversion pipeline 4 is communicated with the inside of the conveying pipeline 3, the free end of the diversion pipeline 4 is opposite to the free end of the conveying pipeline 3, and the free end of the diversion pipeline 4 extends to the outer wall of the air supply fan 1.

Further, be provided with clamp 9 between reposition of redundant personnel pipeline 4 and the air supply fan 1, reposition of redundant personnel pipeline 4 passes through clamp 9 and air supply fan 1's outer wall fixed connection, the free end fixed mounting of reposition of redundant personnel pipeline 4 has diffusion nozzle 10, when the overheat phenomenon appears in air supply fan 1 continuous operation, close stop valve 5, the air current is obstructed in stop valve 5 department, change flow direction, through reposition of redundant personnel pipeline 4 and diffusion nozzle 10 discharge near the heat radiation fins of air supply fan 1 outer wall, carry out the forced air cooling to air supply fan 1, diffusion nozzle 10 can increase the air current diffusion area, thereby improve the forced air cooling effect.

Further, the bottom of base 15 is fixed with rubber pad 8 through adhesive bonding, and rubber pad 8 has excellent pliability, at air supply fan 1 operation in-process, can play the cushioning effect, and base 15 has seted up four groups and has reserved the installation hole site, and rubber pad 8 has seted up four groups of through-holes, and the through-hole with reserve the coaxial counterpoint of installation hole site, use fasteners such as bolt, pass and reserve installation hole site and through-hole, can be fixed base 15 to the installation region.

Further, the output end of the air supply fan 1 is fixedly provided with a first flange 11, one end of the conveying pipeline 3 close to the air supply fan 1 is fixedly provided with a second flange 12, the first flange 11 and the second flange 12 are detachably connected through bolts, and the first flange 11 and the second flange 12 can be disassembled and assembled through disassembling and assembling bolts, so that the disassembling and assembling operation is simple.

Furthermore, a flow-limiting nozzle 13 is fixedly arranged inside the conveying pipeline 3, a first flow-increasing pipeline 6 and a second flow-increasing pipeline 7 are fixedly arranged on the outer wall of the conveying pipeline 3, the first flow increasing pipeline 6 and the second flow increasing pipeline 7 are symmetrically arranged, the first flow increasing pipeline 6 and the second flow increasing pipeline 7 are communicated with the interior of the conveying pipeline 3, when air flow passes through the flow limiting nozzle 13, the air flow passes through the reduced flow cross section, the flow velocity of the air flow is increased, the flow rate is inversely proportional to the flow cross section, a Venturi effect is generated, low pressure is formed near the flow limiting nozzle 13, air in the external environment is sucked by the principle of low-pressure adsorption, the air in the external environment enters the conveying pipeline 3 through the first flow-increasing pipeline 6 and the second flow-increasing pipeline 7, mixed with the air flow, the final output quantity is larger than the input quantity of the air supply fan 1, the conveying quantity is improved, and therefore the air supply working efficiency is improved.

Further, four sets of lock washers are arranged at the top of the base 15, the lock washers are coaxially aligned with the reserved mounting holes, a strong adhesive is arranged between the base 15 and the lock washers, the top of the base 15 is fixedly connected with the lock washers through the strong adhesive, and the lock washers are designed to prevent nuts or bolts from loosening.

It should be noted that, the invention is a kind of air supply arrangement used in the greenhouse, when using, control the start of the air supply blower 1, after the air supply blower 1 operates, the flow direction of the air can be controlled, and accelerate the flow speed of the air, the air current is discharged through the delivery conduit 3, achieve the purpose of air supply, after the air supply is over, control the air supply blower 1 to stop operating in time, wherein, when the air supply blower 1 operates continuously and appears the overheat phenomenon, close the stop valve 5, the air current is blocked at the stop valve 5, change the flow direction, discharge to the vicinity of the heat dissipation fin of the outer wall of the air supply blower 1 through the shunt conduit 4 and the diffusion shower nozzle 10, cool the air supply blower 1, the diffusion shower nozzle 10 can increase the air current diffusion area, thus improve the air cooling effect, in addition, in the air supply process, because the air supply blower 1 can improve the air current flow speed, know according to bernoulli's law, the increase of the flow velocity is accompanied with the reduction of the fluid pressure, when the fluid passes through the conveying pipeline 3, the air in the external environment is sucked by the low pressure adsorption principle, the air in the external environment enters the conveying pipeline 3 through the shunt pipeline 4 and is mixed with the air flow, the input quantity of the final output quantity large air supply fan 1 can shorten the air supply time and improve the air supply working efficiency, in addition, the flow limiting nozzle 13 is arranged in the conveying pipeline 3, when the air flow passes through the flow limiting nozzle 13, the phenomenon that the flow velocity of the air flow is increased after passing through the reduced flow cross section, the flow velocity of the air flow is inversely proportional to the flow cross section, the venturi effect is generated, the low pressure is formed near the flow limiting nozzle 13, the air in the external environment is sucked by the low pressure adsorption principle, the air in the external environment enters the conveying pipeline 3 through the first flow increasing pipeline 6 and the second flow increasing pipeline 7 and is mixed with the air flow, and the final input quantity of the large air supply fan 1 is finally obtained, further improve the conveying capacity to improve air supply work efficiency, comparatively practical.

In addition, the inlet of the flow-limiting nozzle 13 is provided with a conical surface 130, and the conical surface 130 can solve the phenomena of wind ring and air flow mixing.

Secondly, air supply fan 1 includes the drum placed in the middle, fixes the tip cover at drum placed in the middle both ends, is equipped with a plurality of heat radiation fins that set up along drum length direction placed in the middle at the outer wall of drum placed in the middle, forms the cell body between two adjacent heat radiation fins, be equipped with respectively on every tip cover with the intercommunicating pore 16 of cell body intercommunication, dust cover 2 is fixed on one of them tip cover, pipeline 3 connects on another tip cover to be equipped with on the outer end terminal surface of every tip cover a plurality of with the bell mouth body 17 of intercommunicating pore one by one, be connected with rotatory impeller 18 at the surface of dust cover 2, the diameter of rotatory impeller is greater than the external diameter of tip cover. The rotating impeller 18 rotates when the air supply fan 1 works, and the rotating wind force enters the conical hole bodies 17 close to the rotating impeller 18 and then flows to the other through hole from the groove body, so that the real-time cooling of the work of the air supply fan 1 is realized.

In addition, a first annular heat exchange space is arranged inside the first flange 11, a second annular heat exchange space is arranged inside the second flange 12, the first annular heat exchange space and the second annular heat exchange space are communicated through a U-shaped communicating pipe, a plurality of first inclined holes inclining towards the conveying pipeline 3 are formed in the inner wall of the first flange 11, the first inclined holes are communicated with the first annular heat exchange space, a plurality of second inclined holes inclining towards the conveying pipeline 3 are formed in the inner wall of the second flange 12, the second inclined holes are communicated with the second annular heat exchange space, and the first inclined holes and the second inclined holes can prevent wind from entering the annular heat exchange space from the first inclined holes and the second inclined holes when the conveying pipeline 3 is blown out, so that wind power loss is caused, and when the temperature is reduced, the first inclined holes and the second inclined holes can further drive the temperature reduction of one end sleeve, namely, the heat exchange is realized.

As shown in fig. 3-4, be connected with two circular arc boards 19 at the air-out end of current-limiting nozzle 13, form the space between two circular arc boards 19, and the space has that the upside is uncovered and the downside is uncovered, first air outlet that increases flow pipeline 6 is located two circular arc boards 19's upside edge intermediate position and openly link up with the upside, second air outlet that increases flow pipeline 7 is located two circular arc boards 19's downside edge intermediate position and openly link up with the downside, two circular arc boards 19's centre of a circle coincidence can restrain pipeline 3's air-out bore.

The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a be used for warmhouse booth air supply arrangement, includes base (15), its characterized in that: the outer surface of the top of the base (15) is fixedly provided with a mounting table (14) through welding, the outer surface of the top of the mounting table (14) is provided with an arc groove, an air supply fan (1) is arranged above the mounting table (14), the air supply fan (1) is installed in the arc groove arranged at the top of the mounting table (14) in an embedded manner, the input end of the air supply fan (1) is fixedly provided with a dust cover (2) through bolts, the output end of the air supply fan (1) is detachably provided with a conveying pipeline (3), the middle part of the conveying pipeline (3) is provided with a stop valve (5), the outer wall of the conveying pipeline (3) is fixedly connected with a shunt pipeline (4), the shunt pipeline (4) and the conveying pipeline (3) are welded in a seamless manner, the interior of the shunt pipeline (4) is communicated with the interior of the conveying pipeline (3), the free end of the diversion pipeline (4) is opposite to the free end of the conveying pipeline (3) in direction, and the free end of the diversion pipeline (4) extends to the outer wall of the air supply fan (1);

the flow limiting nozzle (13) is fixedly installed inside the conveying pipeline (3), the first flow increasing pipeline (6) and the second flow increasing pipeline (7) are fixedly installed on the outer wall of the conveying pipeline (3), the first flow increasing pipeline (6) and the second flow increasing pipeline (7) are symmetrically arranged, and the first flow increasing pipeline (6) and the second flow increasing pipeline (7) are communicated with the inside of the conveying pipeline (3); a conical surface (130) is arranged at the inlet of the flow limiting nozzle (13);

the air supply fan (1) comprises a central cylinder and end sleeves fixed at two ends of the central cylinder, a plurality of radiating fins arranged along the length direction of the central cylinder are arranged on the outer wall of the central cylinder, a groove body is formed between every two adjacent radiating fins, a communicating hole (16) communicated with the groove body is respectively arranged on each end sleeve, a dust cover (2) is fixed on one end sleeve, a conveying pipeline (3) is connected to the other end sleeve, a plurality of conical hole bodies (17) communicated with the communicating holes one by one are arranged on the end surface of the outer end of each end sleeve, a rotary impeller (18) is connected to the outer surface of the dust cover (2), and the diameter of the rotary impeller is larger than the outer diameter of the end sleeve; the rotary impeller (18) rotates when the air supply fan (1) works, and the rotating wind enters the conical hole bodies (17) close to the rotary impeller (18) and then flows to the other through hole from the groove body.

2. The air supply device for the greenhouse as claimed in claim 1, wherein: be provided with between reposition of redundant personnel pipeline (4) and air supply fan (1) clamp (9), reposition of redundant personnel pipeline (4) are through the outer wall fixed connection of clamp (9) and air supply fan (1), the free end fixed mounting of reposition of redundant personnel pipeline (4) has diffusion nozzle (10).

3. The air supply device for the greenhouse as claimed in claim 1, wherein: the bottom of base (15) is fixed with rubber pad (8) through adhesive bonding, base (15) are seted up four groups and are reserved installation hole site, rubber pad (8) are seted up four groups of through-holes, and the through-hole is counterpointed with reserving the installation hole site coaxial.

4. The air supply device for the greenhouse as claimed in claim 1, wherein: the air supply system is characterized in that an output end of the air supply fan (1) is fixedly provided with a first flange (11), one end of the conveying pipeline (3) close to the air supply fan (1) is fixedly provided with a second flange (12), and the first flange (11) and the second flange (12) are detachably connected through bolts.

5. The air supply device for the greenhouse as claimed in claim 3, wherein: four sets of stop washers are arranged at the top of the base (15), the stop washers are coaxially aligned with the reserved mounting holes, a strong adhesive is arranged between the base (15) and the stop washers, and the top of the base (15) is fixedly connected with the stop washers through the strong adhesive.