CN203603246U - Double-plastic-composite-enhancing-type four-way inspection well - Google Patents
Double-plastic-composite-enhancing-type four-way inspection well Download PDFInfo
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- CN203603246U CN203603246U CN201320622984.8U CN201320622984U CN203603246U CN 203603246 U CN203603246 U CN 203603246U CN 201320622984 U CN201320622984 U CN 201320622984U CN 203603246 U CN203603246 U CN 203603246U
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Abstract
Provided is a double-plastic-composite-enhancing-type four-way inspection well. Four bearing-inserting openings communicated with a pipeline are formed in the side wall of a well body. The well body is a sewage inspection well body, the bottom of the well body is sealed, and the upper portion of the well body is provided with a well opening which is used for being connected with a well pipe. The inspection well is characterized in that the well body, the bearing-inserting openings, the well opening are made of double-layer plastic composite enhancing materials in a rotational moulding technology, the outer layer of the double-layer plastic composite enhancing materials is a low-density polyethylene layer, the inner layer is an epoxy resin layer, short glass fibers are evenly distributed close to the boundary portion of the inner layer and the outer layer, and part of the short glass fibers are connected into the boundary face of the inner layer and the outer layer in a permeating mode and are connected with the inner layer and the outer layer in a hot-melting mode. According to the double-plastic-composite-enhancing-type four-way inspection well, using cost is lowered, and product quality is greatly improved.
Description
Technical field
The utility model relates to the manhole in a kind of gravity drainage, blowdown pipe network, particularly a kind of plastics four-way manhole.
Background technology
In recent years, plastic inspection well is widely used, the also appearance like the mushrooms after rain thereupon of a large amount of plastic inspection well manufacturing enterprise.Main cause is that China firmly builds portion's emphasis and promotes the use of plastic inspection well, places restrictions on brick manhole, effectively controls groundwater resources and pollutes.During from 2007, the whole nation only has 2～3 to produce plastic inspection well enterprise, and to existing 50 many enterprises in today whole nation of 2013, in these 50 many enterprises, what go up in advance is to adopt Shooting Technique to produce, but the producer of in the recent period upper this project great majority adopt rotational molding technique to produce manhole.
It is to adopt the good LLDPE(low density polyethylene (LDPE) of mobility that rotational molding technique is produced the raw material of manhole), rotational molding technique is as used HDPE(high density polyethylene (HDPE)) produce manhole, cannot moulding, because the non-constant of the mobility of HDPE.But HDPE carrys out ratio in physical property with LLDPE, no matter be rigidity, elastic mould, or hot strength, HDPE is more much higher than LLDPE.So the wall thickness of the injection moulding well of producing with HDPE is former much thinner than the wall of rotational moulding type well.Adopt rotational molding technique can only carry out moulding with the LLDPE of good fluidity again, can only sacrifice raw material, increase wall thickness, exchange intensity for this.
Linear low density polyethylene (LLDPE) (Linear Low-Density Polyethylene), english abbreviation is LLDPE.LLDPE is structurally different from general low density polyethylene (LDPE), because there is not long-chain branch.The linearity of LLDPE depends on the different process of manufacture of LLDPE and LDPE.LLDPE conventionally under lower temperature and pressure, is closed and generates as butylene, hexene or octene copolymer by ethene and senior a alkene.The LLDPE polymer that polymerization process generates has the molecular weight distribution narrower than general LDPE, has linear structure simultaneously and makes it have different rheological behaviors.The melt flow characteristics of LLDPE adapts to the requirement of rotational molding technique, particularly uses film expressing technique, can the high-quality LLDPE product of output.LLDPE be applied to polyethylene all traditional cities often strengthened anti-ly stretch, anti-ly penetrate, the performance of shock resistance and tear-proof makes LLDPE be suitable for doing film.Its excellent environmental stress crack resistance, low-temperature impact resistance and anti-warpage properties make LLDPE all attractive to tubing, sheet material extrusion molding and the application of all moldings.The up-to-date application of LLDPE is the lining for waste residue landfill and waste liquid pool as mulch film.
Glass fiber reinforced plastic (FRP) is also called GRP, i.e. fiber-reinforced plastic refers generally to strengthen unsaturated polyester, epoxy resin and phenolic resin as matrix resin with glass fiber.Make the reinforced plastic of reinforcing material with glass fiber or its goods, appellation is glass fiber reinforced plastics, or appellation glass fiber reinforced plastic.Due to used resin kind difference, therefore there is the title of organic toughened glass, fiber glass epoxy, phenolic fiberglass reinforced plastics.Light weight is and hard, and non-conductive, mechanical strength is high, recycles few, corrosion-resistant.Can replace steel manufacturing machine part and automobile, ship housing etc.If it is material of main part that fiber glass reinforced plastics inspection well adopts high-quality glass fiber reinforced plastics composite material, cost of manufacture is high, and in the situation that quality specifications is had relatively high expectations, all need in crushing resistance, intensity, vacuum, ring stiffness, weatherability, switching performance, application life etc. to improve, overall performance is in urgent need to be improved.
Utility model content
The purpose of this utility model is to provide a kind of pair and moulds composite enhanced four-way manhole, solve the thicker problem that needs intensity that just can reach of the plastic inspection well borehole wall that rotational molding technique is made; And solve the problem that fiber glass reinforced plastics inspection well cost of manufacture is high, overall performance is lower.
For achieving the above object, the utility model adopts following technical scheme:
A kind of two mould composite enhanced four-way manhole, the sidewall of its well body have four with the bell and spigot of pipeline connection; Described well body is the sewage inspection well well body that bottom lock, top have a well head, and described well head, for being connected with well casing, is characterized in that: described well body, bell and spigot and well head are made by double-layer plastic composite reinforcing material rotational molding technique; The skin of described double-layer plastic composite reinforcing material is low density polyethylene layer, internal layer is epoxy resin layer, near internal layer and outer field intersection, uniformly dispersing has short glass fiber, and a part of short glass fiber infiltrates and is connected to internal layer and outer field interface, and is connected with internal layer and outer hot melt.
Described epoxy resin layer is two to three layers, and hot melt connects between layers, and uniformly dispersing has short glass fiber near its intersection, a part of short glass fiber infiltrate be connected to layer with layer interface.
Described short glass fiber is the long alkali-free glass fibre of a kind of 3～4mm.
Described well body is diameter variable well body or isometrical well body.
Described bell and spigot is reducing bell and spigot or isometrical bell and spigot.
Compared with prior art the utlity model has following characteristics and beneficial effect: the utility model provides two mould composite enhanced four-way manhole and not only draw materials conveniently, maintenance cost is low, reduce use cost, and greatly strengthened the overall performance of sewage inspection well, as crushing resistance is good, intensity is high, vacuum is good, ring stiffness is large, weatherability is strong, and switching performance is good, long service life etc.The utility model can be widely used in the construction of various pipes sewage inspection well.
Accompanying drawing explanation
Fig. 1 is the two structural representations of moulding composite enhanced four-way manhole of the utility model;
Fig. 2 is the composition structural representation that the utility model embodiment 1 single layer of rings epoxy resins strengthens the borehole wall;
Fig. 3 is the composition structural representation that the double-deck epoxy resin of the utility model embodiment 2 strengthens the borehole wall;
Fig. 4 is the two process flow diagrams of moulding composite enhanced four-way manhole of the utility model.
Reference numeral: 1-epoxy resin layer, 2-low density polyethylene layer, 3-bell and spigot, 4-well body, 5-short glass fiber, 6-well head.
The specific embodiment
Embodiment is referring to shown in Fig. 1～3, a kind of two composite enhanced four-way manholes of moulding, the sidewall of its well body 4 have four with the bell and spigot 3 of pipeline connection; Described well body 4 is sewage inspection well well bodies that bottom lock, top have a well head 6, and described well head 6, for being connected with well casing, is characterized in that: described well body 4, bell and spigot 3 and well head 6 are made by double-layer plastic composite reinforcing material rotational molding technique; The skin of described double-layer plastic composite reinforcing material is low density polyethylene layer 2, internal layer is epoxy resin layer 1, near internal layer and outer field intersection, uniformly dispersing has short glass fiber 5, part short glass fiber 5 infiltrates and is connected to internal layer and outer field interface, and is connected with internal layer and outer hot melt.Described epoxy resin layer 1 is two to three layers, and hot melt connects between layers, and uniformly dispersing has short glass fiber 5 near its intersection, a part of short glass fiber 5 infiltrate be connected to layer with layer interface.It is 2% ~ 4% carbon black that the material of described low density polyethylene layer 2 contains weight ratio; It is 5% ~ 6% desiccant that the material of described epoxy resin layer 1 contains weight ratio; Described short glass fiber 5 is the long alkali-free glass fibres of a kind of 3～4mm.Described well body 4 can be diameter variable well body or isometrical well body.Described bell and spigot 3 can be reducing bell and spigot or isometrical bell and spigot.
As shown in Figure 4, described two preparation method who moulds composite enhanced four-way manhole is:
1, rotational moulding well mould is installed on rotational molding machine working arm;
2, in rotational moulding sewage inspection well mould, add LLDPE resin-oatmeal, its addition be traditional rotational molding technique while producing this specification, model sewage inspection well raw material weight used 1/3rd, mould is fixed on the arm of rotomoulding apparatus and enters heating furnace;
3, start heating, rotational molding machine working arm rotates; When furnace chamber temperature is raised to 250 ℃, rise to 180 ° of C until mold temperature and be incubated again after 5 clocks;
4, rotational molding machine working arm stops operating, and now, though sewage inspection well is molded, wall thickness does not reach; Open heating furnace door, rotational molding machine working arm is exited to furnace chamber, rotational molding machine working arm transmission gauge tap is arranged in crawl control model, mobile rotational molding machine working arm, directly over mould charge door court time, stop moving the switch of cutting off the electricity supply, now moulding of low density polyethylene layer 2;
5, put on proximity gloves, open charge door, a certain amount of short glass fiber 5 is added, addition is depending on the specification of sewage inspection well.It is fast that reinforced action is wanted, in order to avoid cause the temperature of mould to decline to a great extent, after adding, covers tightly charge door, starts rotational molding machine working arm mould is sent into heating furnace;
6, start rotational molding machine working arm and start transmission, the temperature of heating furnace can be raised to 260 ℃, be incubated 8 minutes, the short glass fiber 5 that makes to add is uniformly topped on surface, shape chamber, now has quite a few short glass fiber to enter into the top layer of low density polyethylene layer 2;
7, heating furnace is exited in the stall of rotational molding machine working arm;
8, rotational molding machine working arm rotating switch is arranged in crawl control, start crawl, allow mould charge door upward; Put on proximity gloves, open charge door, will be in advance according to epoxy resin 94%-95%, epoxy resin composition after ammonium chloride 5%-6% allotment evenly adds in mould, the amount adding is determined by the result of process trial, and many is a kind of wastes, has lacked quality intensity and has not reached; Add and build lid, starting rotational molding machine working arm is sent into heating furnace;
9, rotate rotational molding machine working arm, utilize the temperature in mould to heat the epoxy resin composition newly adding, now epoxy resin becomes very rare, there is good mobility, thereby coated is to endosexine, shape chamber uniformly, short glass fiber 5 is covered completely, so just form compound epoxy resin layer 1, simultaneously, most of short glass fiber 5 fuses with low density polyethylene layer 2, epoxy resin composition and low density polyethylene layer 2 are also realized close combination, and therefore, in shaft wall structure tissue, glass fiber plays the role as a bridge and a link;
10, rotational molding machine working arm stops operating, and mould exits heating furnace;
11, take apart a die after cooling, twoly mould the moulding of composite enhanced four-way manhole.By the combination of epoxy resin layer 1 and low density polyethylene layer 2, the borehole wall of sewage inspection well all reaches " one residential draining plastics sewage inspection well " requirement (J/T233-2006) completely on economic index, physical performance index.
Referring to Fig. 2 and Fig. 3, for some more in particular cases, need to meet higher sewage inspection well index, can take to prepare multilayer epoxy resin layer 1 and short glass fiber 5 obtains, above-mentioned steps 5～10 is the preparation technology of middle short glass fiber enhancing and epoxy resin layer 1, repeatedly repeating step 5～10, the structure of formation multilayer short glass fiber and epoxy resin cross arrangement.On the basis of single layer of rings epoxy resins, add again short glass fiber 5, take advantage of under the dry molten condition in first floor epoxy resin place and add rapidly a certain amount of short glass fiber 5, cover tightly after lid, starting rotational molding machine working arm, allow short glass fiber 5 and the full and uniform combination of epoxy resin, and then the rotational molding machine working arm that stops, uncap, adds the second layer epoxy resin for preparing, mixes well; Open again rotational molding machine working arm, allow two layers of epoxy resin equably coated on the surface of short glass fiber 5, epoxy resin clads short glass fiber, and the intensity obtaining is like this higher, can meet " municipal drainage plastics sewage inspection well " CJ/T326-2010 standard completely.As obtained requirements at the higher level, when the high inspection of examination requirement of engineering special intensity, can use the utility model technology, then overbrushing answers one deck and can realize, with the high ring rigidity sewage inspection well of can produce >=8Kn/m2 of this technique.
The utility model adopts two plastic composite materials rotational molding techniques, also can add the French chalk of weight ratio approximately 15% ~ 20% in the formula of epoxy resin layer 1.
The utility model has good Economic Comparability, 11800 yuan/ton of epoxy resin valencys per ton, 6600 yuan/ton per ton of short glass fiber, 3500 yuan/ton of talcous valencys per ton, take the straight-through well of Φ 1000mm as example, are about 100kg by the sewage inspection well gross weight that traditional rotational molding technique is produced, carrying out production weight with two plastic composite materials rotational molding techniques is only 85kg, cost 20 ~ 25% left and right, can reduce entirety investment amount greatly, only need 1/6th of traditional injection moulding well technology infusion of financial resources.
The utility model has also improved product quality in having reduced cost of production, and the LLDPE material that two plastic composite materials rotational molding techniques adopt has the following advantages: good fluidity, and plastic; In material, add carbon black, can uvioresistant destroy; There is good melting with glass fiber.Mould compound and glass fiber and strengthen by two, realize the raising of the prerequisite performance indications of a series of sewage inspection wells, as compressive strength, vacuum, ring stiffness, weatherability, switching performance, application life, maintenance cost etc.
Claims (5)
1. two mould a composite enhanced four-way manhole, the sidewall of its well body (4) have four with the bell and spigot (3) of pipeline connection; Described well body (4) is the sewage inspection well well body that bottom lock, top have a well head (6), described well head (6), for being connected with well casing, is characterized in that: described well body (4), bell and spigot (3) and well head (6) are made by double-layer plastic composite reinforcing material rotational molding technique; The skin of described double-layer plastic composite reinforcing material is low density polyethylene layer (2), internal layer is epoxy resin layer (1), near internal layer and outer field intersection, uniformly dispersing has short glass fiber (5), part short glass fiber (5) infiltrates and is connected to internal layer and outer field interface, and is connected with internal layer and outer hot melt.
2. two composite enhanced four-way manhole of moulding according to claim 1, it is characterized in that: described epoxy resin layer (1) is two to three layers, hot melt connects between layers, uniformly dispersing has short glass fiber (5) near its intersection, a part of short glass fiber (5) infiltrate be connected to layer with layer interface.
3. mould composite enhanced four-way manhole for according to claim 1 and 2 pair, it is characterized in that: described short glass fiber (5) is the long alkali-free glass fibre of a kind of 3～4mm.
4. mould composite enhanced four-way manhole for according to claim 1 and 2 pair, it is characterized in that: described well body (4) is diameter variable well body or isometrical well body.
5. mould composite enhanced four-way manhole for according to claim 1 and 2 pair, it is characterized in that: described bell and spigot (3) is reducing bell and spigot or isometrical bell and spigot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320622984.8U CN203603246U (en) | 2013-10-10 | 2013-10-10 | Double-plastic-composite-enhancing-type four-way inspection well |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201320622984.8U CN203603246U (en) | 2013-10-10 | 2013-10-10 | Double-plastic-composite-enhancing-type four-way inspection well |
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| CN203603246U true CN203603246U (en) | 2014-05-21 |
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| CN201320622984.8U Expired - Fee Related CN203603246U (en) | 2013-10-10 | 2013-10-10 | Double-plastic-composite-enhancing-type four-way inspection well |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020113813A1 (en) * | 2018-12-07 | 2020-06-11 | 东莞达音创研实业有限公司 | Manufacturing method for multi-layer product hot-melt connection structure and application thereof |
-
2013
- 2013-10-10 CN CN201320622984.8U patent/CN203603246U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020113813A1 (en) * | 2018-12-07 | 2020-06-11 | 东莞达音创研实业有限公司 | Manufacturing method for multi-layer product hot-melt connection structure and application thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140521 Termination date: 20181010 |