CN209504974U - A kind of plastics Microirrigation belt based on porous media leakage - Google Patents

Abstract

It is related to a kind of plastics Microirrigation belt based on porous media leakage, comprising: slight irrigation band body；Make to generate porous structure on slight irrigation band body using pore-foaming agent, partial hole from the inner surface of slight irrigation band body to outer surface, which is interconnected, forms the penetrating passage with porous media leakage function, percent opening is 0.01%-100%, on the cross section of slight irrigation band body, the part accounting of porous structure is 0.01%-100%.The Microirrigation belt can using its porous media characteristic is continuous by water, small flow is transported to the soil near plant root, soil moisture regime can be kept in conjunction with irrigation under film, guarantee crop water suction sufficiently, can effectively save irrigation cost.Belong to agricultural irrigation articles field.

Description

A kind of plastics Microirrigation belt based on porous media leakage

Technical field

The present invention relates to agricultural irrigation articles field more particularly to a kind of plastics Microirrigation belts based on porous media leakage.

Background technique

Micro irrigation technology not only can reach the purpose of water-saving fertilizer-saving, but can increasing both production and income, pest and disease damage is reduced, to ensureing grain peace Entirely, it realizes that agricultural production and income plays important supporting role, therefore becomes research hotspot in recent years.

At present drip irrigation zone type on the market mainly have side seam heat seal type, it is embedded, three kinds of joint strip formula, current this three kinds Irrigation method mainly based on irrigating at regular time and quantity, can not continuously small flow supply water, the utilization of water resource is caused to be not enough, and Since the solid construction of irrigation belt can not be further decreased using material cost.For this situation, part irrigation rig is to water delivery Band body and water dropper are transformed, and are obstructed using molded open cell foam, fibrous material, non-woven fabrics etc. and waterproof The combinations such as layer, hose, casing form the irrigation rig of localized seepage's point, equally exist and are only suitable for the manufacture of separate room small lot, can not The problems such as one-pass molding, efficiency is lower.

Develop it is a kind of can water is continuous, small flow be transported to soil near plant root, can be kept in conjunction with irrigation under film Soil moisture regime, guarantee crop water suction sufficiently, and molding mode it is relatively simple, can one-time formed no water dropper, have it is porous The Microirrigation belt of media leaks functional characteristic is of great significance to the development and application of agricultural Microirrigation belt, while water-saving to enriching Irrigation technique generates positive effect.

Summary of the invention

For the technical problems in the prior art, the object of the present invention is to provide one kind can water is continuous, small flow The soil being transported near plant root can keep soil moisture regime in conjunction with irrigation under film, guarantee the sufficient base of crop water suction In the plastics Microirrigation belt of porous media leakage.

In order to achieve the above object, the present invention adopts the following technical scheme:

A kind of plastics Microirrigation belt based on porous media leakage, comprising: slight irrigation band body；Make Microirrigation belt sheet using pore-foaming agent Porous structure is generated on body, the partial hole from the inner surface of slight irrigation band body to outer surface is interconnected and is formed with porous media The penetrating passage of leakage function, percent opening 0.01%-100%, on the cross section of slight irrigation band body, the part of porous structure Accounting is 0.01%-100%.

Preferably, the polymer masses without pore-foaming agent and/or the polymer masses containing pore-foaming agent are added to extruder It is blended and is expressed into after being plasticized in molding die and uses blow molding process blow molding for the infiltration with porous media leakage function The Microirrigation belt of aquaporin；Microirrigation belt after molding is drawn to wrap-up by traction device and completes winding packaging.

Preferably, using two extruders co-extrudate material, wherein one is to squeeze out for being plasticized without pore-foaming agent The fine and close extruder of polymer masses, another is the pore extruder for being plasticized polymer masses of the extrusion containing pore-foaming agent, Two extruders connect a molding die jointly, while extruded material and blow molding are Microirrigation belt into molding die.

Preferably, a molding die is connected using an extruder, pore is added in the polymer masses containing pore-foaming agent Extruder be blended and be plasticized be expressed into molding die and blow molding be Microirrigation belt.

Preferably, pore-foaming agent is at least one of foaming agent, water soluble pore formers, plant fiber, water soluble pore formers For polyethylene glycol or anhydrous sodium sulfate.

Preferably, the material containing foaming agent obtains the Microirrigation belt with foam structure after squeezing out；Containing water-soluble pore-foaming agent The Microirrigation belt that material obtains after squeezing out forms the penetrating passage of connection after water flowing；What the material containing plant fiber obtained after squeezing out Microirrigation belt, because the capillary water absorption characteristic and unsticking of plant fiber act on, forms penetrating passage after being blow molded and drawing stretching.

A kind of equipment of the manufacturing method for realizing the above-mentioned plastics Microirrigation belt based on porous media leakage, comprising: squeeze Machine, molding die, blowing device, traction device and wrap-up out；Molding die includes plug, mold core and die sleeve, plug with Gap between die sleeve forms runner, and the center of plug is equipped with the inlet channel being connected to blowing device；Runner includes along material Feed zone, conveying section, diffuser and the profiled section that conveying direction is sequentially communicated；In the exit end face of molding die, runner is in It is circular；Traction device and wrap-up are sequentially arranged at molding die outlet side, for drawing, winding slight irrigation after molding Band.

Preferably, the quantity of extruder is two, and one is for squeezing out the densification for being free of the polymer masses of pore-foaming agent Extruder, another is the pore extruder for squeezing out the polymer masses containing pore-foaming agent, and two extruders are respectively arranged on into The two sides of pattern tool, feed zone includes the feed zone I being connected to pore extruder and the feed zone II being connected to fine and close extruder.

Preferably, the quantity of extruder is one, and extruder is the pore for squeezing out the polymer masses containing pore-foaming agent Extruder, set on the side of molding die, feed zone includes the feed zone I being connected to pore extruder.

Preferably, the lower vertical of feed zone and conveying section connects, and the feed inlet of feed zone is located at the side wall of molding die On；Conveying section is the constant tubular structure of circle diameter, and diffuser is the horn-like structure that circle diameter is gradually increased, profiled section For the tubular structure that circle diameter is constant；The width of flow path of feed zone is greater than the width of flow path of conveying section, and the runner of conveying section is wide Degree is greater than the width of flow path of profiled section, and diffuser is connected between conveying section and profiled section, and the width of flow path of diffuser is along material Flow direction is gradually reduced.

Generally speaking, the present invention has the advantage that

This porous media leakage micro irrigation band manufacturing theory is simple, equips by using common extrusion and blow molding, made The Microirrigation belt produced is a kind of soil that water can be delivered continuously near plant root without post forming, without forming water dropper Earth can keep soil moisture regime in conjunction with irrigation under film, guarantee the sufficient high-performance Microirrigation belt of crop water suction, for agricultural irrigation The processing and forming of band is of great significance with application and agricultural water-saving irrigation.Its advantage is embodied in following several respects:

1. addition is blended with polymer masses alone or in combination using foaming agent, water soluble pore formers, plant fiber to squeeze out Machine, and evenly dispersed, fusion plastification in an extruder, when foaming agent is added, slight irrigation band body is foamed into when squeezing out with one Determine the porous structure of percent opening, forms the Microirrigation belt with porous media leakage function.It is individually added into enough water-soluble pores When agent, co-continuous phase structure is formed, leakage passage can be formed after water flowing.When being individually added into plant fiber, capillary water absorption is special Property and interfacial detachment can form penetrating passage.Selectively combined foaming agent, polyethylene glycol and anhydrous sodium sulphate etc. are water-soluble for Microirrigation belt Property pore-foaming agent and plant fiber, shaping efficiency are high；It foams to form abscess when extrusion molding under the action of foaming agent；It squeezes out Abscess swell after, traction drawing process thereafter can lead to plant fiber unsticking from polymeric matrix, polymer and plant Interfibrous channel, the connection that can lead to abscess form penetrating passage, simultaneously because plant fiber has capillary water absorption can also Abscess is caused to form more penetrating passages after water flowing；Under the action of water soluble pore formers, cell wall is scattered in after water flowing In water soluble pore formers it is soluble in water to make between abscess and abscess be interconnected form more penetrating passages.In foaming agent In the case where containing foaming agent, water soluble pore formers, plant fiber simultaneously, by multiple aperture, aperture is high-efficient.

2. percent opening (i.e. the quantity of penetrating passage) can be used as the important means that flow is irrigated in control.Due to porosity characteristic Penetrating passage is numerous and tiny, and Microirrigation belt has the function of capillary irrigation, by control pore size, percent opening and irrigates pressure Power makes Microirrigation belt keep the water flowing state of continuous small flow when in use, without supplying water at regular time and quantity, saves cost.

3. Microirrigation belt only undergoes extrusion-blown modling and/or foaming, without carrying out secondary operation, without forming water dropper The porous structure with certain percent opening is obtained, realizes irrigation function, and porous structure can effectively reduce raw material usage amount, into one Step reduces cost.

4. manufacturing method and equipment have extensive adaptability to material.

Detailed description of the invention

Fig. 1 is the structural schematic diagram only with a pore extruder of manufacturing equipment of the invention.

Fig. 2 is the exit end face structural schematic diagram of molding die in Fig. 1.

Fig. 3 is the schematic diagram of the section structure of A-A in Fig. 2.

Fig. 4 be Fig. 1 in equipment made from porous media leakage micro irrigation band structural schematic diagram.

Fig. 5 is the structural representation of the one pore extruder of use and a fine and close extruder of manufacturing equipment of the invention Figure.

Fig. 6 is the exit end face structural schematic diagram of molding die in Fig. 5.

Fig. 7 is the schematic diagram of the section structure of B-B in Fig. 6.

Fig. 8 be Fig. 5 in equipment made from porous media leakage micro irrigation band structural schematic diagram.

Label and corresponding parts title in figure are as follows: 1 is pore extruder, and 2 be fine and close extruder, and 3 be shaping mould Tool, 4 be Microirrigation belt after molding, and 5 be traction device, and 6 be wrap-up, and 7 be die sleeve, and 8-1 is feed zone I, and 8-2 is vertical Conveying section, 8-3 are diffuser, and 8-4 is profiled section, and 8-5 is feed zone II, and 9 be plug, and 10 be inlet channel, and 11 is logical for infiltration Road.

Specific embodiment

It is next with reference to the accompanying drawing that the present invention will be further described in detail.

Embodiment 1

A kind of manufacturing equipment of the plastics Microirrigation belt based on porous media leakage, as shown in Figure 1, comprising: one for squeezing The pore extruder of polymer masses containing pore-foaming agent, molding die, blowing device (not shown), traction device and receipts out Winding apparatus.In the present embodiment, traction device and wrap-up use existing device.Molding die includes plug, mold core and mould Set, the gap between plug and die sleeve form runner, and the center of plug is equipped with the inlet channel being connected to blowing device.Such as Fig. 2 Shown, in the exit end face of molding die, runner is annular in shape, and molding die is general drip irrigation zone shaping mould in the present embodiment Tool.

As shown in figure 3, runner includes feed zone I, conveying section, diffuser and the molding being sequentially communicated along material conveying direction Section；Feed zone I is connect with the lower vertical of conveying section, and the feed inlet of feed zone I is located on the side wall of molding die；Conveying section is The constant tubular structure of circle diameter, diffuser are the horn-like structure that circle diameter is gradually increased, and profiled section is circle diameter Constant tubular structure；The width of flow path of feed zone I is greater than the width of flow path of conveying section, and the width of flow path of conveying section is greater than molding The width of flow path of section, diffuser are connected between conveying section and profiled section, and the width of flow path of diffuser is gradually reduced.

Pore extruder is set to the side of molding die, and the outlet end of pore extruder is connected to the feed zone I of runner.It leads Leading-in device and wrap-up are sequentially arranged at molding die outlet side, for drawing, winding Microirrigation belt after molding.

In the present embodiment, pore extruder uses publication No. for the eccentric rotor body in the patent of invention of CN105690688A Product pulsation deformation is plasticized process equipment, has the characteristics that dispersion mixing melting effect is good, the thermal history of material process is short.

The equipment is in use, principle is: pore extruder to molding die injection containing foaming agent, polyethylene glycol with it is anhydrous The polymer masses of the water soluble pore formers such as sodium sulphate and plant fiber, polymer masses in runner successively by feed zone I, Conveying section, diffuser and profiled section, Microirrigation belt undergo inflation mistake in the oral modular ring shape runner exit outflow in the top of profiled section Journey, Microirrigation belt after molding have porous structure.Detailed process are as follows: polymer masses and pore-foaming agent are through eccentric rotor volume fluctuation It is squeezed into the film ring shape runner (i.e. runner) of molding die after deformation plasticizing process equipment plasticizing, polymer masses and pore Agent flows out to form (individually containing the water soluble pore formers the case where of the porous structure Microirrigation belt with certain percent opening by runner Under, formed after needing water flowing).By regulating and controlling the formula of moulding process and polymer masses and pore-foaming agent, to control porous media Percent opening.

A kind of manufacturing method of the plastics Microirrigation belt based on porous media leakage, by foaming agent, water soluble pore formers, plant Fiber and polymer are added in pore extruder, which is eccentric rotor extruder, through eccentric rotor extruder Rear foaming agent, water soluble pore formers and plant fiber is squeezed out to be dispersed in polymer masses and be plasticized and be expressed into molding die Runner in successively pass through feed zone I, conveying section, diffuser, profiled section, in profiled section while extrusion molding using blow molding Device blow molding is with foam structure and to contain the water soluble pore formers such as polyethylene glycol and anhydrous sodium sulfate and plant fiber Microirrigation belt, be interconnected between the abscess of part so that Microirrigation belt has the function of that porous media leaks.Microirrigation belt after molding passes through Traction device draws to wrap-up and completes winding packaging.Due to containing plant fiber in Microirrigation belt, in traction drawing process, Due to drawing stretching action, plant fiber unsticking from polymeric matrix, the channel between polymer and plant fiber can lead to bubble Hole is interconnected and forms penetrating passage, is formed after water flowing simultaneously because there is plant fiber capillary water absorption may also lead to abscess More penetrating passages.Due to containing the water soluble pore formers such as polyethylene glycol, anhydrous sodium sulfate in Microirrigation belt, it is scattered in after water flowing poly- Water soluble pore formers in conjunction object matrix are soluble in water to form more penetrating passages to make to be interconnected between abscess and abscess. Pore-foaming agent is mixed by foaming agent, water soluble pore formers, plant fiber, and by multiple aperture, aperture is high-efficient.

One kind porous media leakage micro irrigation band as made from above equipment and the above method, including slight irrigation band body；It is micro- The filling water-filled cross section of band body is cirque structure, has porous structure, percent opening 90% on slight irrigation band body.Such as figure Shown in 4, the partial hole from the inner surface of slight irrigation band body to outer surface, which is interconnected, to be formed with porous media leakage function Penetrating passage, on the cross section of slight irrigation band body, the part accounting with porous structure is 100%.

Embodiment 2

A kind of manufacturing equipment of the plastics Microirrigation belt based on porous media leakage, as shown in Figure 5, comprising: one for squeezing The pore extruder of the polymer masses containing pore-foaming agent, a densification for squeezing out the polymer masses without pore-foaming agent are squeezed out Machine, molding die, blowing device (not shown), traction device and wrap-up out.As shown in fig. 6, molding die goes out In mouth end face, runner is annular in shape.

As shown in fig. 7, runner includes feed zone, conveying section, diffuser and the molding being sequentially communicated along material conveying direction Section；Wherein feed zone includes feed zone I and feed zone II.Feed zone I and feed zone II are connect with the lower vertical of conveying section, Feed zone I and the feed inlet of feed zone II are located on the opposite two sidewalls of molding die；Conveying section is that circle diameter is constant Tubular structure, diffuser is the horn-like structure that is gradually increased of circle diameter, and profiled section is the constant tubular knot of circle diameter Structure；The width of flow path of feed zone is greater than the width of flow path of conveying section, and the width of flow path of conveying section is greater than the width of flow path of profiled section, Diffuser is connected between conveying section and profiled section, and the width of flow path of diffuser is gradually reduced.

Two extruders are respectively arranged on the opposite two sides of molding die, for squeezing out the polymer masses pore containing pore-foaming agent The outlet end of extruder is connected to the feed zone I of runner, for squeezing out the fine and close extruder of the polymer masses without pore-foaming agent Outlet end is connected to the feed zone II of runner.Traction device and wrap-up are sequentially arranged at molding die outlet side, for leading Draw, wind Microirrigation belt after molding.

The equipment is in use, principle is: to molding die injection moulding material, (molding materials are not to two extruders jointly Polymer masses containing pore-foaming agent and the polymer masses containing pore-foaming agent), the polymer masses of no pore-foaming agent in runner successively By feed zone II, conveying section, diffuser and profiled section；Polymer masses containing pore-foaming agent successively pass through feed zone in runner I, conveying section, diffuser and profiled section.Microirrigation belt undergoes inflation mistake in the oral modular ring shape runner exit outflow in the top of profiled section Journey, Microirrigation belt after molding have porous structure.Detailed process are as follows: the polymer masses without pore-foaming agent and gathering containing pore-foaming agent Close the film circle that object material squeezes into molding die after two eccentric rotor volume fluctuation deformation plasticizing process equipment plasticizings respectively In annular channel (i.e. runner), molding materials flow out to be formed containing porous structure and with the slight irrigation of certain percent opening by runner Band.By regulating and controlling the proportion of moulding process (rate of extrusion including two extruders) and the material containing pore-foaming agent, control is opened Porosity, it is controllable in Microirrigation belt by regulating and controlling the ratio of the polymer masses without pore-foaming agent and the polymer masses containing pore-foaming agent On the cross section of ontology, the part accounting of porous structure.

A kind of manufacturing method of the plastics Microirrigation belt based on porous media leakage, will contain polyethylene glycol, anhydrous sodium sulfate etc. Water soluble pore formers, plant fiber, foaming agent and polymer masses are added in pore extruder, and pore extruder is eccentric turns Sub- extruder squeezes out rear foaming agent, water soluble pore formers and plant fiber through eccentric rotor extruder and is dispersed in polymer In material and plasticizing is expressed into the runner of molding die successively by feed zone I, conveying section, diffuser, profiled section；Simultaneously will The polymer masses of no pore-foaming agent are added in fine and close extruder, and fine and close extruder is eccentric rotor extruder, through eccentric rotor Extruder plasticizing is expressed into the runner of molding die successively feed zone II, conveying section, diffuser, profiled section.In conveying section, expand It is part band that blowing device blow molding is utilized while two strands of material flows converge simultaneously foam shaping by extrusion in scattered section, profiled section There are foam structure and the Microirrigation belt containing water soluble pore formers and plant fiber, is interconnected between some perforations so that slight irrigation belt There is porous media leakage function.Microirrigation belt after molding is drawn to wrap-up by traction device and completes winding packaging.

One kind porous media leakage micro irrigation band as made from above equipment and the above method, including slight irrigation band body；It is micro- The filling water-filled cross section of band body is cirque structure, has porous structure, percent opening 90% on slight irrigation band body.Such as Fig. 8 Shown, the partial hole from the inner surface of slight irrigation band body to outer surface, which is interconnected, forms the infiltration with porous media leakage function Aquaporin, on the cross section of slight irrigation band body, the part accounting of porous structure is 25%.

The present embodiment does not refer to part with embodiment 1, and details are not described herein again.

The above embodiment is a preferred embodiment of the present invention, but embodiments of the present invention are not by above-described embodiment Limitation, other any changes, modifications, substitutions, combinations, simplifications made without departing from the spirit and principles of the present invention, It should be equivalent substitute mode, be included within the scope of the present invention.

Claims (1)

1. a kind of plastics Microirrigation belt based on porous media leakage characterized by comprising slight irrigation band body；Slight irrigation band body On porous structure is distributed with, the partial hole from the inner surface of slight irrigation band body to outer surface be interconnected is formed with porous media The penetrating passage of leakage function, percent opening 0.01%-100%, on the cross section of slight irrigation band body, the part of porous structure Accounting is 0.01%-100%.