CN104696572A - Gas pressure valve - Google Patents
Gas pressure valve Download PDFInfo
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- CN104696572A CN104696572A CN201510061066.6A CN201510061066A CN104696572A CN 104696572 A CN104696572 A CN 104696572A CN 201510061066 A CN201510061066 A CN 201510061066A CN 104696572 A CN104696572 A CN 104696572A
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- Prior art keywords
- valve body
- air outlet
- gaseous
- ventilation
- pressure valve
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- 238000009423 ventilation Methods 0.000 claims abstract description 50
- 239000002131 composite material Substances 0.000 claims abstract description 25
- 239000004698 Polyethylene Substances 0.000 claims description 26
- 239000000463 material Substances 0.000 claims description 25
- 239000000945 filler Substances 0.000 claims description 19
- 239000000203 mixture Substances 0.000 claims description 19
- 239000012783 reinforcing fiber Substances 0.000 claims description 19
- 238000002347 injection Methods 0.000 claims description 17
- 239000007924 injection Substances 0.000 claims description 17
- 239000008188 pellet Substances 0.000 claims description 12
- 239000002994 raw material Substances 0.000 claims description 10
- 239000002216 antistatic agent Substances 0.000 claims description 8
- 239000000470 constituent Substances 0.000 claims description 7
- 239000003963 antioxidant agent Substances 0.000 claims description 6
- 230000003078 antioxidant effect Effects 0.000 claims description 6
- 239000007822 coupling agent Substances 0.000 claims description 6
- 239000003063 flame retardant Substances 0.000 claims description 6
- 238000005469 granulation Methods 0.000 claims description 6
- 230000003179 granulation Effects 0.000 claims description 6
- 239000002245 particle Substances 0.000 claims description 6
- BLDFSDCBQJUWFG-UHFFFAOYSA-N 2-(methylamino)-1,2-diphenylethanol Chemical group C=1C=CC=CC=1C(NC)C(O)C1=CC=CC=C1 BLDFSDCBQJUWFG-UHFFFAOYSA-N 0.000 claims description 4
- 229920001179 medium density polyethylene Polymers 0.000 claims description 4
- 239000004701 medium-density polyethylene Substances 0.000 claims description 4
- 239000000843 powder Substances 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 2
- 238000002360 preparation method Methods 0.000 claims description 2
- 230000008676 import Effects 0.000 claims 1
- 230000007797 corrosion Effects 0.000 abstract description 5
- 238000005260 corrosion Methods 0.000 abstract description 5
- 230000002159 abnormal effect Effects 0.000 abstract description 2
- 238000007789 sealing Methods 0.000 abstract 1
- 230000000052 comparative effect Effects 0.000 description 11
- 239000007789 gas Substances 0.000 description 7
- 229920000049 Carbon (fiber) Polymers 0.000 description 6
- 239000004917 carbon fiber Substances 0.000 description 6
- 239000000567 combustion gas Substances 0.000 description 6
- 239000007769 metal material Substances 0.000 description 6
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 229910010413 TiO 2 Inorganic materials 0.000 description 5
- 239000004760 aramid Substances 0.000 description 5
- 229920003235 aromatic polyamide Polymers 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 239000003365 glass fiber Substances 0.000 description 5
- 229910004298 SiO 2 Inorganic materials 0.000 description 4
- 229910017083 AlN Inorganic materials 0.000 description 3
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 3
- 229910052796 boron Inorganic materials 0.000 description 3
- 239000000835 fiber Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 239000012763 reinforcing filler Substances 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical group [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- BGYHLZZASRKEJE-UHFFFAOYSA-N [3-[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxy]-2,2-bis[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxymethyl]propyl] 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical compound CC(C)(C)C1=C(O)C(C(C)(C)C)=CC(CCC(=O)OCC(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)=C1 BGYHLZZASRKEJE-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000006353 environmental stress Effects 0.000 description 1
- 238000013467 fragmentation Methods 0.000 description 1
- 238000006062 fragmentation reaction Methods 0.000 description 1
- -1 glyceroyl ester Chemical class 0.000 description 1
- 229920001903 high density polyethylene Polymers 0.000 description 1
- 239000004700 high-density polyethylene Substances 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 239000010954 inorganic particle Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 229920001684 low density polyethylene Polymers 0.000 description 1
- 239000004702 low-density polyethylene Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- SSDSCDGVMJFTEQ-UHFFFAOYSA-N octadecyl 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical compound CCCCCCCCCCCCCCCCCCOC(=O)CCC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 SSDSCDGVMJFTEQ-UHFFFAOYSA-N 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 239000012779 reinforcing material Substances 0.000 description 1
- 229910000077 silane Inorganic materials 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K13/00—Use of mixtures of ingredients not covered by one single of the preceding main groups, each of these compounds being essential
- C08K13/04—Ingredients characterised by their shape and organic or inorganic ingredients
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K7/00—Use of ingredients characterised by shape
- C08K7/02—Fibres or whiskers
- C08K7/04—Fibres or whiskers inorganic
- C08K7/06—Elements
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K7/00—Use of ingredients characterised by shape
- C08K7/02—Fibres or whiskers
- C08K7/04—Fibres or whiskers inorganic
- C08K7/14—Glass
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/06—Polyethene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L77/00—Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Compositions of derivatives of such polymers
- C08L77/10—Polyamides derived from aromatically bound amino and carboxyl groups of amino-carboxylic acids or of polyamines and polycarboxylic acids
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Valve Housings (AREA)
Abstract
The invention relates to a gas pressure valve which includes a valve body and a ventilation body, wherein the valve body comprises a top surface, a bottom surface and side surfaces; a gas inlet and a gas outlet are formed in the side surfaces; a mounting table vertically protrudes from the top surface; a gas inlet hole and a gas outlet hole are formed in the mounting table; the gas inlet hole is communicated with the gas inlet; the gas outlet hole is communicated with the gas outlet; the ventilation body comprises a connecting part which is connected to the mounting table through threads; the top of the mounting table and the top of the connecting part are recessed to form cavities; the top surface of the connecting part vertically protrudes to form a ventilation part; the ventilation part is hollow and is communicated to the cavities; threaded holes are formed in the top surface and are used for communicating the external world with the inner part of the ventilation part; a groove is formed in the inner surface of the ventilation part and is used for communicating the external world with the inner part of the ventilation part; the valve body and the ventilation body are both made of PE composite materials. The gas pressure valve solves the problems of gas leakage and abnormal pressure of the conventional gas pressure valves, and has the advantages of being good in sealing performance, good in stability, firm in structure, light in weight, high in corrosion resistance and the like.
Description
Technical field
The invention belongs to field of mechanical technique, relate to a kind of operation equipment, particularly a kind of gaseous-pressure valve.
Background technique
Gaseous-pressure valve plays the effect reducing delivery pressure and stable output pressure, be gas utensil supporting in important gas-fired equipment.In prior art, pressure valve is generally made up of parts such as suction port, air outlet, handwheel, bonnet, bottom flange, air inlet nozzle, spiracle, upper gas chamber, underpressure chamber, valve pads.But use prior art easily to occur following problem, the pressure valve gas leakage that black box senile abrasion causes; The problems such as the pressure that black box dilatancy causes is abnormal.
In addition, the gaseous-pressure valve that existing market has is be made up of metallic material substantially, although the performances such as the intensity of this pressure valve, hardness are high, its weight is large, perishable, working life is limited, and processing technology is loaded down with trivial details, cost of production is higher.
In sum, for solving the deficiency that existing gaseous-pressure valve exists, need to design a kind of good seal performance, good stability, sound construction, the gaseous-pressure valve that lightweight, corrosion-resistant, long service life, cost of production are low.
Summary of the invention
The object of the invention is to there are the problems referred to above for existing technology, propose a kind of good stability, sound construction, the gaseous-pressure valve that lightweight, corrosion-resistant, long service life, cost of production are low.
Object of the present invention realizes by following technical proposal: a kind of gaseous-pressure valve, comprise valve body, valve body comprises the side of end face, bottom surface and connection end face and bottom surface, side offers suction port and air outlet, the axis of suction port and air outlet is all perpendicular to the axis of valve body, on end face, vertical protrusion forms mounting platform, mounting platform offers inlet hole and air outlet hole, the axis of inlet hole and air outlet hole and the axis of valve body are parallel to each other, inlet hole is communicated with suction port, and air outlet hole is communicated with air outlet;
Ventilation body, comprise joint, joint is threaded on mounting platform, and mounting platform can be resisted against on the top of joint, and the top of mounting platform and the top of joint are all recessed to form cavity, on the end face of joint, vertical protrusion forms ventilating part, ventilating part hollow is also communicated in cavity, and the end face of ventilating part offers tapped hole, and tapped hole is communicated with extraneous and vent section interior, the internal surface of ventilating part offers groove, and groove is communicated with extraneous and vent section interior;
Valve body and ventilation body are made by PE composite material, PE composite material forms primarily of following composition (with weight parts): PE:100 part, reinforcing fiber: 10-20 part, filler: 5-15 part, fire retardant: 20-30 part, anti-static agent: 1-5 part, coupling agent: 1-5 part, antioxidant: 1-3 part.
Valve body and the ventilation body of gaseous-pressure valve of the present invention are made by PE composite material, make valve body with metallic material to compare with body of ventilating, the valve body that the present invention is made up of PE composite material and ventilation body have the advantages such as quality is light, corrosion-resistant, long service life, good toughness, non-scaling, thermal conductivity are little, cost is low, keying moment is little, easy to use.
In above-mentioned a kind of gaseous-pressure valve, PE is MDPE.MDPE maintains the rigidity of HDPE, has again flexibility and the creep resistant of LDPE; Thus, the pressure valve adopting MDPE to make has the performances such as the long-term retentivity of good environmental stress crack resistance and intensity, long service life.
In above-mentioned a kind of gaseous-pressure valve, the diameter of reinforcing fiber is 3-10 μm, and slenderness ratio is (50-300): 1.One or more more preferably in carbon fiber, glass fibre, aramid fibre, boron fiber of reinforcing fiber.
In above-mentioned a kind of gaseous-pressure valve, the inorganic nanometer powder of filler to be particle diameter be 30-100nm.Inorganic nanometer powder is Al more preferably
2o
3, TiO
2, SiO
2, AlN, Si
3n
4, CaCO
3in one or more.Nano level inorganic particle specific surface area is large, larger with the area of contact of matrix, when material is subject to impacting, stress can be dispersed along nano grain surface, reaches the effect of decay dispersion, then can produce more microscopic crack when transshipping, successively transmit, absorb more impact energy, avoid disposable fragmentation to occur, be conducive to later maintenance and repairing.
The present invention is composite appropriate reinforcing fiber and filler in PE matrix also, to reach the object strengthening PE composite material combination property.Reinforcing fiber to the humidification of the physical and mechanical property of PE composite material clearly, but but can make the toughness of material decline.And filler can not only play when the mechanical property of reinforcing material and comparatively significantly acts on, toughening modifying can also be carried out to material.Thus, the present invention is composite reinforcing fiber and filler carry out filling-modified to the performance of material jointly.When the parts by weight of reinforcing fiber and filler are stated in scope on the invention, impact toughness and the flexural strength of composite material are greatly improved, and tensile strength also improves but improves less.Therefore, while the toughness enhancing of PE composite material of the present invention, its rigidity is also higher, has good mechanical property.
In addition, also composite fire retardant in right amount, anti-static agent, coupling agent and antioxidant in PE composite material of the present invention.The present invention's fire retardant used is preferably expansion type flame retardant.Anti-static agent is preferably glyceroyl ester in nonionic surface active agent, one or both in amine ethoxylate.Coupling agent is preferably titanate coupling agent or silane coupler.Antioxidant is then one or more in commercially available common antioxidant, as: antioxidant 1010, antioxidant 1076 etc.
Composite anti-static agent in right amount in PE composite material of the present invention, because the pressure valve that PE composite material is made, when logical combustion gas uses, if quality control is not good, easily causes gas leakage, if now pressure valve electrostatic produce electrical spark will ignition and blasting gas, harm personal safety as well as the property safety.Therefore, with the addition of appropriate anti-static agent in PE composite material of the present invention, make the pressure valve made have antistatic effect, and the antistatic effect endurance is long, and the anti-static agent added does not affect the performances such as the processing of material.
In above-mentioned a kind of gaseous-pressure valve, the preparation method of valve body and ventilation body comprises the following steps:
S1, take raw material by valve body and the ventilation constituent of body and parts by weight thereof, put in high-speed mixer and mix, obtain material;
S2, the above-mentioned material mixed is put into double screw extruder feed hopper, fed in double screw extruder by feed hopper, extrude from the head of double screw extruder, obtain pellet by granulator granulation;
S3, add pellet obtained above in injection machine barrel, be heated to molten state, then by the material of molten state through nozzle injection in mould, obtain valve body and ventilation body through pressurize, cooling forming, die sinking.
Wherein, in step S2, the temperature of double screw extruder controls at 180-220 DEG C, and screw speed is 30-60r/min.
In step S3, nozzle temperature is 160-200 DEG C, and die temperature is 40-60 DEG C, and injection pressure is 80-100MPa, and inject time is 2-5s, and dwell pressure is 40-50MPa, and the dwell time is 15-60s, and cool time is 30-80s.
In above-mentioned a kind of gaseous-pressure valve, valve body is regular hexagon, suction port and air outlet to be opened in respectively on two relative faces of valve body and the axis of suction port and air outlet on same straight line.
In above-mentioned a kind of gaseous-pressure valve, ventilating part and joint are cylindrical and coaxial line, and the diameter of joint is greater than the diameter of ventilating part.
In above-mentioned a kind of gaseous-pressure valve, the top of joint and the top of mounting platform are all recessed to form cavity.
In above-mentioned a kind of gaseous-pressure valve, the axis of air outlet hole, tapped hole and valve body all point-blank.
In above-mentioned a kind of gaseous-pressure valve, the bottom surface of valve body offers two fixed holes, fixed hole position is between air outlet and suction port.
In above-mentioned a kind of gaseous-pressure valve, the diameter stepped increase from inside to outside of air outlet hole.
In above-mentioned a kind of gaseous-pressure valve, the end face of air outlet hole is higher than the end face of inlet hole.
Compared with prior art, the present invention has the following advantages:
1, in the present invention, the connecting means that attachment portion uses, for being threaded, being threaded and having the advantages such as structure is simple, connection is reliable, mounting or dismounting are convenient.
2, in the present invention, the axis of ventilation body, air outlet hole and valve body is on same straight line, air outlet hole is arranged on this position, when combustion gas is moved in valve, under the leading role of ventilation body inner cavity, gas flows to inlet hole, and now combustion gas keeps evenly, being conducive to the stability of valve inner to all directions pressure of inlet hole.
3, in the present invention, the diameter stepped increase from inside to outside of air outlet hole, the method, uses and progressively increases the pressure that the method retaining area slowly reduces air outlet place, play while namely reducing pressure, keep again the effect of the stability of valve body entirety.
4, in the present invention, valve body and the ventilation body of gaseous-pressure valve all adopt PE composite material to make, make valve body with metallic material to compare with body of ventilating, the valve body that the present invention is made up of PE composite material and ventilation body have the advantages such as quality is light, corrosion-resistant, long service life, good toughness, non-scaling, thermal conductivity are little, cost is low, keying moment is little, easy to use.
Accompanying drawing explanation
Fig. 1 is the structural representation of gaseous-pressure valve.
Fig. 2 is the plan view of gaseous-pressure valve.
Fig. 3 is the structural representation of valve body.
Fig. 4 is the structural representation after Fig. 3 dextrorotation turn 90 degrees.
Fig. 5 is the plan view of valve body.
Fig. 6 is the worm's eye view of valve body.
Fig. 7 is the enlarged view of Fig. 3 air outlet hole.
In figure, 1, valve body; 11, suction port; 12, air outlet; 13, mounting platform; 131, inlet hole; 132, air outlet hole; 14, fixed hole; 2, ventilation body; 21, joint; 22, ventilating part; 221, tapped hole; 222, groove.
Embodiment
Be below specific embodiments of the invention and by reference to the accompanying drawings, technological scheme of the present invention is further described, but the present invention be not limited to these embodiments.
As depicted in figs. 1 and 2, the ventilation body 2 that the present invention includes valve body 1 and be arranged on valve body 1, the side of valve body 1 offers suction port 11 and air outlet 12, both axis are mutually vertical with the axis of valve body 1, the end face of valve body 1 protrudes and is formed with mounting platform 13, mounting platform 13 offers the air outlet hole 132 and the inlet hole 131 being communicated with suction port 11 that are communicated with air outlet 12, inlet hole 131 is a little more than inlet hole 131, the axis of inlet hole 131 and air outlet hole 132 is all parallel to each other with the axis of valve body 1, ventilation body 2 comprises cylindrical upper and lower two-part, be respectively the larger joint of diameter 21 and the less ventilating part 22 of diameter, the equal hollow in inside of ventilating part 22 and joint 21, joint 21 is threaded on mounting platform 13, the top of joint 21 and the top of mounting platform 13 are all recessed to form cavity, the end face of ventilating part 22 offers and is communicated with tapped hole 221 that is extraneous and ventilation body 2 inside, the internal surface of ventilating part 22 offers groove 222, groove 222 connects extraneous and ventilation body 2 is inner.
As shown in Figure 3, valve body 1 is in regular hexagon, described suction port 11 and air outlet 12 to be opened in respectively on two relative faces of valve body 1 and the axis of suction port 11 and air outlet 12 on same straight line, the internal surface of suction port 11 and air outlet 12 offers screw thread, so that with other equipment connections, use is threaded to have and connects reliable advantage, and the mounting or dismounting that are threaded are got up convenient.
As shown in Figure 4 and Figure 6, the bottom surface of valve body 1 offers two tapped holes 221 fixed, locate, and the bottom of tapped hole 221 is higher than the axis of suction port 11 and air outlet 12, use the advantage that this location and fixation method have structure firm, the stability of combustion gas in pressure valve is higher in addition.
As shown in figure 5 and figure 7, the axis of ventilation body 2, air outlet hole 132 and valve body 1 is on same straight line, air outlet hole 132 is arranged on this position, when combustion gas is moved in valve, under the leading role of ventilation body 2 inner cavity, gas flows to inlet hole 131, and now combustion gas keeps evenly, being conducive to the stability of valve body 1 inside to all directions pressure of inlet hole 131.
As shown in Figure 6, two fixed holes 14 are between suction port 11 and air outlet 12, and two fixed holes 14 are distributed in the same side of suction port 11 axis, and this structure convenient being used for installs and fixed valve body 1, and effectively excessively can resist ambient pressure, increase the stability of product.
Preferably, the diameter stepped increase from inside to outside of air outlet hole 132, in this structure, uses and progressively increases the pressure that the method retaining area slowly reduces air outlet 12 place, while reduction pressure, keep the stability of valve body 1 entirety.
The present invention in an initial condition, comprise valve body 1 and ventilation body 2, valve body 1 is in regular hexagon, two sides that valve body 1 is relative offer suction port 11 and air outlet 12 respectively, the axis of suction port 11 and air outlet 12 all perpendicular to the axis of valve body 1 and both axis on same straight line, and the stepped increase from inside to outside of the diameter of air outlet hole 132, on end face, vertical protrusion forms mounting platform 13, mounting platform 13 offers inlet hole 131 and air outlet hole 132, the axis of inlet hole 131 and air outlet hole 132 and the axis of valve body 1 be parallel to each other and the end face of air outlet hole 132 higher than the end face of inlet hole 131, inlet hole 131 is communicated with suction port 11, air outlet hole 132 is communicated with air outlet 12, the bottom surface of valve body 1 offers two fixed holes 14, described fixed hole 14 is between air outlet 12 and suction port 11, ventilation body 2 inner hollow, comprise joint 21, joint 21 is threaded on mounting platform 13, the top of joint 21 and the top of mounting platform 13 are all recessed to form cavity, on the end face of joint 21, vertical protrusion forms ventilating part 22, ventilating part 22 and joint 21 are cylindrical and coaxial line, the diameter of joint 21 is greater than the diameter of ventilating part 22, the end face of ventilating part 22 offers tapped hole 221, tapped hole 221 is communicated with extraneous and ventilating part 22 is inner, the internal surface of ventilating part 22 offers groove 222, groove 222 is communicated with extraneous and ventilating part 22 is inner.
And above-mentioned valve body 1 and ventilation body 2 are made by PE composite material, PE composite material forms primarily of following composition (with weight parts): PE:100 part, reinforcing fiber: 10-20 part, filler: 5-15 part, fire retardant: 20-30 part, anti-static agent: 1-5 part, coupling agent: 1-5 part, antioxidant: 1-3 part.
Table 1: the constituent of valve body of the present invention and ventilation body and parts by weight thereof
Embodiment 1:
Take raw material by embodiment in table 11 valve body and the ventilation constituent of body and parts by weight thereof, wherein, reinforcing fiber is diameter is 3-5 μm, and slenderness ratio is (50-100): the aramid fibre of 1; The Al of filler to be particle diameter be 30-50nm
2o
3.Afterwards all raw materials are put in high-speed mixer and mix, obtain material.Then material is put into double screw extruder feed hopper, fed in double screw extruder by feed hopper, the temperature of double screw extruder controls at 180 DEG C, and screw speed is 30r/min, extrudes from the head of double screw extruder.Pellet is obtained again by granulator granulation.Pellet adds in the barrel in injection machine again, is heated to molten state, and be then that the nozzle injection of 160 DEG C is in the mould of 40 DEG C to temperature through excess temperature by the material of molten state, injection pressure is 80MPa, and inject time is 2s.Then pressurize 15s under pressure is 40MPa.Finally cool 30s, die sinking obtains valve body and ventilation body.
Embodiment 2:
Take raw material by embodiment in table 12 valve body and the ventilation constituent of body and parts by weight thereof, wherein, reinforcing fiber is diameter is 5-8 μm, and slenderness ratio is (100-200): the glass fibre of 1; The TiO of filler to be particle diameter be 50-80nm
2.Afterwards all raw materials are put in high-speed mixer and mix, obtain material.Then material is put into double screw extruder feed hopper, fed in double screw extruder by feed hopper, the temperature of double screw extruder controls at 200 DEG C, and screw speed is 40r/min, extrudes from the head of double screw extruder.Pellet is obtained again by granulator granulation.Pellet adds in the barrel in injection machine again, is heated to molten state, and be then that the nozzle injection of 180 DEG C is in the mould of 45 DEG C to temperature through excess temperature by the material of molten state, injection pressure is 90MPa, and inject time is 3s.Then pressurize 30s under pressure is 45MPa.Finally cool 50s, die sinking obtains valve body and ventilation body.
Embodiment 3:
Take raw material by embodiment in table 13 valve body and the ventilation constituent of body and parts by weight thereof, wherein, reinforcing fiber is diameter is 3-8 μm, and slenderness ratio is (80-200): the carbon fiber of 1; The CaCO of filler to be particle diameter be 30-80nm
3.Afterwards all raw materials are put in high-speed mixer and mix, obtain material.Then material is put into double screw extruder feed hopper, fed in double screw extruder by feed hopper, the temperature of double screw extruder controls at 210 DEG C, and screw speed is 50r/min, extrudes from the head of double screw extruder.Pellet is obtained again by granulator granulation.Pellet adds in the barrel in injection machine again, is heated to molten state, and be then that the nozzle injection of 190 DEG C is in the mould of 50 DEG C to temperature through excess temperature by the material of molten state, injection pressure is 95MPa, and inject time is 4s.Then pressurize 45s under pressure is 48MPa.Finally cool 60s, die sinking obtains valve body and ventilation body.
Embodiment 4:
Take raw material by embodiment in table 14 valve body and the ventilation constituent of body and parts by weight thereof, wherein, reinforcing fiber is diameter is 8-10 μm, and slenderness ratio is (100-300): the boron fiber of 1; The SiO of filler to be particle diameter be 50-100nm
2.Afterwards all raw materials are put in high-speed mixer and mix, obtain material.Then material is put into double screw extruder feed hopper, fed in double screw extruder by feed hopper, the temperature of double screw extruder controls at 220 DEG C, and screw speed is 60r/min, extrudes from the head of double screw extruder.Pellet is obtained again by granulator granulation.Pellet adds in the barrel in injection machine again, is heated to molten state, and be then that the nozzle injection of 200 DEG C is in the mould of 60 DEG C to temperature through excess temperature by the material of molten state, injection pressure is 100MPa, and inject time is 5s.Then pressurize 60s under pressure is 50MPa.Finally cool 80s, die sinking obtains valve body and ventilation body.
Comparative example 1:
The commercially available valve body be made up of Ni metal material and ventilation body.
Comparative example 2:
The valve body be made up of pure PE material and ventilation body.
Comparative example 3:
Comparative example 3 is only with the difference of embodiment 3, and the parts by weight of comparative example 3 reinforcing fiber are 25 parts.
Comparative example 4:
Comparative example 4 is only with the difference of embodiment 3, and the parts by weight of comparative example 3 filler are 20 parts.
Valve body and the ventilation body of gaseous-pressure valve embodiment of the present invention 1-4 and comparative example 1 and comparative example 2-4 made carry out testing property, and test result is as shown in table 2.
Table 2: valve body and ventilation body the performance test results
As known from Table 2, although the valve body that the present invention is made up of PE composite material and ventilation mechanics aspect of performance are not as good as the metallic material valve body made and body of ventilating, but when meeting service condition, the everyways such as its weight, processing, working life are better than valve body that metallic material makes and ventilation body.
In addition, by known with the contrast of comparative example 2-4, the performance of compatibility to final valve body and ventilation body of PE composite material of the present invention has material impact, must strictly control.
The difference of embodiment 5-8 and embodiment 1-4 is only that filler is AlN.
The difference of embodiment 9-12 and embodiment 1-4 is only that filler is Si
3n
4.
The difference of embodiment 13-16 and embodiment 1-4 is only that filler is Al
2o
3and CaCO
3mix by weight 1:1.
The difference of embodiment 17-20 and embodiment 1-4 is only that filler is Al
2o
3and CaCO
3by weight what mix for 1:2.
The difference of embodiment 21-24 and embodiment 1-4 is only that filler is Al
2o
3, TiO
2, and CaCO
3by weight what mix for 1:1:1.
The difference of embodiment 25-28 and embodiment 1-4 is only that filler is Al
2o
3, TiO
2, SiO
2and CaCO
3by weight what mix for 1:1:1:2.
The difference of embodiment 29-32 and embodiment 1-4 is only that filler is Al
2o
3, TiO
2, SiO
2, AlN and CaCO
3by weight what mix for 1:2:1:1:2.
The difference of embodiment 33-36 and embodiment 1-4 is only that filler is Al
2o
3, TiO
2, SiO
2, AlN, Si
3n
4and CaCO
3by weight what mix for 2:1:1:2:2:2.
The difference of embodiment 37-40 and embodiment 1-4 is only that reinforcing fiber is that carbon fiber and glass fibre mix by weight for 1:1.
The difference of embodiment 41-44 and embodiment 1-4 is only that reinforcing fiber is that carbon fiber and aramid fibre mix by weight for 2:1.
The difference of embodiment 45-48 and embodiment 1-4 is only that reinforcing fiber is that carbon fiber, glass fibre and aramid fibre mix by weight for 2:2:1.
The difference of embodiment 49-52 and embodiment 1-4 is only that reinforcing fiber is carbon fiber, glass fibre, aramid fibre, boron fiber mix by weight for 2:2:1:1.
In view of the present invention program embodiment is numerous, each embodiment's laboratory data is huge numerous, be not suitable for particularize explanation herein, but the content of the required checking of each embodiment is all close with the final conclusion obtained, so do not illustrate one by one the checking content of each embodiment, only with embodiment 1-4, the excellent part of the present patent application is representatively described herein.
The non-limit part of technical scope midrange that this place embodiment protects application claims, equally all in the scope of protection of present invention.
Specific embodiment described herein is only to the explanation for example of the present invention's spirit.Those skilled in the art can make various amendment or supplement or adopt similar mode to substitute to described specific embodiment, but can't depart from spirit of the present invention or surmount the scope that appended claims defines.
Claims (10)
1. a gaseous-pressure valve, is characterized in that, comprising:
Valve body, valve body comprises the side of end face, bottom surface and connection end face and bottom surface, described side offers suction port and air outlet, the axis of described suction port and air outlet is all perpendicular to the axis of valve body, on described end face, vertical protrusion forms mounting platform, and described mounting platform offers inlet hole and air outlet hole, the axis of described inlet hole and air outlet hole and the axis of valve body are parallel to each other, described inlet hole is communicated with suction port, and air outlet hole is communicated with air outlet;
Ventilation body, comprise joint, described joint is threaded on mounting platform, mounting platform can be resisted against the top of joint, the top of described mounting platform and the top of joint are all recessed to form cavity, and on the end face of joint, vertical protrusion forms ventilating part, and described ventilating part hollow is also communicated in cavity, the end face of described ventilating part offers tapped hole, the internal surface of described ventilating part offers groove and runs through ventilating part;
Described valve body and ventilation body are made by PE composite material, described PE composite material forms primarily of following composition (with weight parts): PE:100 part, reinforcing fiber: 10-20 part, filler: 5-15 part, fire retardant: 20-30 part, anti-static agent: 1-5 part, coupling agent: 1-5 part, antioxidant: 1-3 part.
2. a kind of gaseous-pressure valve according to claim 1, is characterized in that, described PE is MDPE.
3. a kind of gaseous-pressure valve according to claim 1, is characterized in that, the diameter of described reinforcing fiber is 3-10 μm, and slenderness ratio is (50-300): 1.
4. a kind of gaseous-pressure valve according to claim 1, is characterized in that, the inorganic nanometer powder of described filler to be particle diameter be 30-100nm.
5. a kind of gaseous-pressure valve according to claim 1, is characterized in that, the preparation method of described valve body and ventilation body comprises the following steps:
S1, take raw material by valve body and the ventilation constituent of body and parts by weight thereof, put in high-speed mixer and mix, obtain material;
S2, the above-mentioned material mixed is put into double screw extruder feed hopper, fed in double screw extruder by feed hopper, extrude from the head of double screw extruder, obtain pellet by granulator granulation;
S3, add pellet obtained above in injection machine barrel, be heated to molten state, then by the material of molten state through nozzle injection in mould, obtain valve body and ventilation body through pressurize, cooling forming, die sinking.
6. a kind of gaseous-pressure valve according to claim 1, it is characterized in that, described valve body is regular hexagon, described suction port and air outlet to be opened in respectively on two relative faces of valve body and the axis of suction port and air outlet on same straight line.
7. a kind of gaseous-pressure valve according to claim 1, is characterized in that, described ventilating part and joint are cylindrical and coaxial line, and the diameter of joint is greater than the diameter of ventilating part.
8. a kind of gaseous-pressure valve according to claim 1, is characterized in that, the dead in line of described air outlet hole, tapped hole and valve body.
9. a kind of gaseous-pressure valve according to claim 1 or 6, is characterized in that, the bottom surface of described valve body vertically offers two fixed holes.
10. a kind of gaseous-pressure valve according to claim 1 or 6, is characterized in that, the outlet of described air outlet hole is higher than the import of inlet hole.
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|---|---|---|---|
| CN201510061066.6A CN104696572A (en) | 2015-02-05 | 2015-02-05 | Gas pressure valve |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510061066.6A CN104696572A (en) | 2015-02-05 | 2015-02-05 | Gas pressure valve |
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|---|---|---|---|
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