CN102829205A - Anti-corrosive anti-pollution environment-friendly plastic brake valve with flexible seal and machining process thereof - Google Patents
Anti-corrosive anti-pollution environment-friendly plastic brake valve with flexible seal and machining process thereof Download PDFInfo
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- CN102829205A CN102829205A CN2012103403490A CN201210340349A CN102829205A CN 102829205 A CN102829205 A CN 102829205A CN 2012103403490 A CN2012103403490 A CN 2012103403490A CN 201210340349 A CN201210340349 A CN 201210340349A CN 102829205 A CN102829205 A CN 102829205A
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Abstract
The invention discloses an anti-corrosive anti-pollution environment-friendly plastic brake valve with flexible seal, and solves the defects that in the prior art, the manufacturing process of a flexible seal brake valve is complicated, the manufacturing cost is high, and secondary pollution is easily caused for fluids. The plastic brake valve comprises a valve body, a valve cover, a valve rod and a brake plate, wherein the valve body is in a three-way structure; the valve cover is arranged at the top end of the valve body, and is movably connected with the valve body; one end of the valve rod penetrates through the valve cover and stretches to the inside of the valve body, and the other end of the valve rod is provided with an adjusting hand wheel; the brake plate is arranged at one end of the valve rod; the brake plate is a composite plastic brake plate; the valve body and the valve cover are both made of modified polyphenylene oxide; and copper connectors are arranged at two connecting ends of the valve body. On the basis, the invention further discloses a machining process of the anti-corrosive anti-pollution environment-friendly plastic brake valve with flexible seal. The anti-corrosive anti-pollution environment-friendly plastic brake valve with flexible seal disclosed by the invention has a simple structure, and can be conveniently machined through injection molding; therefore, the brake valve is suitable to be widely promoted and applied.
Description
Technical field
The present invention relates to a kind of gate valve, specifically, is a kind of anti-corruption anti-pollution type soft seal environmentally-friendly plastic gate valve and processing technology thereof.
Background technique
The application of gate valve in industry and daily life is all very extensive, especially on the convection cell delivering pipe in order to open and close FLUID TRANSPORTATION state.Soft sealing gate valve is as a kind of common structure in the gate valve, and it is mostly to be to be applied to the plumbing field, like the valve part of water supply pipe in the daily life.Soft sealing gate valve mainly is made up of valve body, valve gap and flashboard; At present, the main body part of soft sealing gate valve on the market all is to be processed by metallic material such as cast irons basically, on the one hand; Valve body, valve gap mainly are main through casting with cast iron; Technologies such as polishing, sandblast, machining, plastic-blasting are accomplished, and procedure is many, and energy consumption is big; Environment is seriously influenced, and the production and processing cost is higher; On the other hand, because soft sealing gate valve control fluid transport, therefore; After long-term the use, parts such as the valve body of soft sealing gate valve, valve gap are easy to take place oxidation under the double action of air and fluid; And phenomenons such as burn into gets rusty appear; The opening and closing operations that not only can cause soft sealing gate valve is difficulty very, and is easy to convection cell and causes secondary pollution, the serious harm public's safe and sanitary.
Flashboard is as the open-shut device of soft sealing gate valve, can be directly with conveyance conduit in fluid contact, it has crucial effects in the application of soft sealing gate valve.In the existing technology, the flashboard of soft sealing gate valve mainly is to be skeleton with cast iron, and then coats one deck rubber outside.For middle-size and small-size soft sealing gate valve, its flashboard skeleton volume is all less, cylinder iron casts very inconvenience of skeleton; Therefore, in the existing technology, the flashboard skeleton of middle-size and small-size soft sealing gate valve adopts copper or metallurgical powder to process, make more; But the manufacture cost of copper is too high, and then has increased the whole manufacture cost of soft sealing gate valve product; And metallurgical powder is all quite serious for the pollution of most of fluids.
How when guaranteeing the soft sealing gate valve function; The novel soft sealing gate valve of research and development, a kind of environmental protection low-carbon (LC) of production, convection cell no secondary pollution, long service life is thirsted for solving and unsolved technical barrier with regard to becoming those skilled in the art always.
Summary of the invention
The objective of the invention is to overcome soft sealing gate valve manufacture cost height in the existing technology, inconvenient machining, control fluid caused the defective of secondary pollution easily, a kind of anti-pollution type soft seal of anti-corruption environmentally-friendly plastic gate valve of simple in structure, safe and reliable, environmental protection is provided.
The technological scheme that the present invention adopts is following: anti-rotten anti-pollution type soft seal environmentally-friendly plastic gate valve; The valve body that comprises three-port structure is arranged on the valve gap of this valve body top and its flexible connection, and an end passes valve gap and extends to the valve rod that valve inner, the other end end are provided with adjusting handle; And the flashboard that is arranged on valve rod one end; Said flashboard is the composite plastic flashboard, and said valve body and valve gap are processed by Noryl, and is provided with the copper link in two interface end of valve body.
In order to improve sealability of the present invention, be provided with combination seal mechanism at the connection part of said valve rod and valve gap, and this combination seal mechanism is positioned at valve gap.
Wherein, said combination seal mechanism comprises first seal ring that is solidified as a whole with valve rod, and second seal ring that flexibly connects with valve gap; Wherein, said valve rod passes first seal ring and second seal ring.
Specifically; Be provided with a groove at the top of said valve gap; And on the inwall of this groove, be provided with internal thread, on the outer wall of second seal ring, then be provided with the outside thread that is complementary with internal thread, valve gap and second seal ring are through the flexible connection that cooperates between internal thread and the outside thread.
Further, said valve gap and valve body are through being threaded, and the connection part between the two is provided with the 3rd seal ring.
Further again, said composite plastic flashboard comprises the flashboard main body of being formed and had through hole by composite structrue layer, and be arranged in the through hole of flashboard main body and shape is complementary with it, in order to connect the copper bank spare of valve rod.
Further, said composite structrue layer is by the plastic skeleton that is wrapped in copper bank spare table wall, and the rubber layer that is coated on this plastic skeleton is formed.
As a kind of optimal way, said plastic skeleton is processed by engineering plastics or alloy plastic.
With the said structure is the basis, the processing technology of anti-rotten anti-pollution type soft seal environmentally-friendly plastic gate valve: at first, be benchmark with the copper link, and molding and forming valve body on injection machine; With the valve rod is benchmark, molding and forming valve gap on injection machine; With copper bank spare is benchmark, molding and forming flashboard on injection machine; Then, flashboard is tightened on the valve rod through copper bank spare, again valve gap is connected together with valve rod and valve body.
Wherein, the concrete grammar of molding and forming flashboard is on injection machine: with copper bank spare is benchmark, injection-molded plastic skeleton on injection machine, then, through hot vulcanization at plastic skeleton table wall adhesive rubber layer.
Compared with prior art, the present invention has following beneficial effect:
(1) the present invention is not only simple in structure, easy to process, and the cost cost is very cheap, well below the product of same domain on the market, applies on a large scale for it and to have established favourable basis;
(2) the present invention combines the structural advantages of conventional softer seal gate valve and the characteristics of conventional plastic valve, on the basis that keeps the soft sealing gate valve structure, valve body and valve gap is processed by Noryl; To mould for the iron valve, not only the environmental protection low-carbon (LC) is processed very convenient; And based on the characteristic of plastics, it can be by water decomposition, and is nonpoisonous and tasteless; Thereby avoid getting rusty, can not cause secondary pollution by convection cell;
(3) valve body among the present invention, valve gap etc. all are to machine through the disposable injection moulding of mould; Numerous and diverse operation of having processed when having avoided adopting cast iron materials; Accelerated the up-to-standard rate of production efficiency of products and product, not only practiced thrift the energy, and overcome the influence of traditional gate valve production environment;
(4) the present invention adopts three seal structures; In the combination seal mechanism that the connection part setting of valve rod and valve gap is made up of first seal ring and second seal ring; Connection part at valve gap and valve body then is provided with the 3rd seal ring, through this three seals circle gate valve is carried out multi-layer sealedly, has prevented the leakage of conveyance conduit inner fluid effectively; Thereby improved practicability of the present invention widely, strengthened the competitiveness of product in market;
(5) since the heat-conduction-type of plastics far below metal; So the plastics valve body that the present invention adopts can effectively reduce the heat loss of fluid in transport process; Especially to the control of conveyance conduit such as hot water service; Plastic sluice valves has greatly slowed down the cooling of hot water in the pipeline, thereby reaches purpose of energy saving;
(6) flashboard among the present invention adopts the composite plastic flashboard on the fondational structure of existing flashboard, and uses the plastic skeleton processed by engineering plastics or alloy plastic and the rubber layer main body as flashboard; Metal ingredient in traditional iron, copper flashboard or the metallurgical powder flashboard is rejected, through the combination of plastic skeleton and rubber layer, on the one hand; Plastic skeleton itself is nonpoisonous and tasteless, and is water-fast, ageing-resistant; Thereby when realizing elastic soft sealing; Avoided causing secondary pollution, on the other hand, can control cost of production effectively because of the former thereby convection cell of framework material;
(7) plastic skeleton is processed by engineering plastics or alloy plastic among the present invention; The toughness of engineering plastics or alloy plastic itself and self-enrichment are much larger than metallic material such as cast iron, copper; Its to the destruction of rubber clad material much smaller than metallic material such as cast iron, copper, thereby the working life of greatly having improved product.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Fig. 2 is the structural representation of flashboard among the present invention.
Wherein, reference character corresponding components name is called: 1-valve body, 2-valve gap, 3-valve rod, 4-flashboard, 5-adjusting handle, 6-copper link, 7-first seal ring, 8-second seal ring, 9-the 3rd seal ring, 10-copper bank spare, 11-plastic skeleton, 12-rubber layer.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is described further, mode of execution of the present invention includes but not limited to the following example.
Embodiment
Like Fig. 1, shown in 2; Anti-rotten anti-pollution type soft seal environmentally-friendly plastic gate valve, its design principle are that the inertia and the plastics that utilize plastic chemistry to react can be by water decompositions, nonpoisonous and tasteless characteristics; On the basis that keeps existing soft sealing gate valve channel-type structural advantages; Critical piece with seal gate valve: valve body 1, valve gap 2 are made by Noryl, to mould Dai Tie, have not only solved the easy convection cell of conventional softer seal gate valve and have caused secondary pollution problem; And greatly having reduced the valve cost of production, product has boundless market prospects.
Valve body 1 is the structure of three-way pipeline; Top at valve body 1 is provided with outside thread; The inwall of valve gap 2 then is provided with the internal thread that is complementary with outside thread, and valve gap 2 is tightened on the valve body 1 through the cooperation between two screw threads, and traditional valve body 1 is generally accomplished through technologies such as casting, polishing, sandblast, machining, plastic-blastings by cast iron with valve gap 2; Procedure is many, energy consumption is big, and environment is had very big influence; Valve body 1 all is once property molding and forming on injection machine with valve gap 2 in the present embodiment; Numerous and diverse operation of having processed when having avoided adopting cast iron materials; Accelerated the up-to-standard rate of production efficiency of products and product; Not only practiced thrift the energy, and when having overcome the conventional softer seal gate valve and having produced to the influence of environment.
In the present embodiment, valve gap 2 shapes are similar to steeple, and valve rod 3 inserts from its top; Extend to the inside of valve body 1 in order to the end that flashboard 4 is installed, the other end is reserved in the outside of valve gap 2, usually; For easy to adjust, an end that is positioned at valve gap 2 outsides is in order to install adjustment handwheel 5.When soft sealing gate valve was controlled the switching of fluid transport, the transmission direction of fluid was vertical with the control direction of the flashboard of soft sealing gate valve, because fluid has certain pressure; So gate valve itself also must have certain crushing resistance, and the conventional plastic valve is overall plastic valve; The resistance to compression of its valve rod controlling component, torsional property very a little less than; Therefore, for resistance to compression, the anti-twisting property that guarantees soft sealing gate valve, the valve rod 3 in the present embodiment adopts resistance to compression, torsional property preferred metal to make; Usually, in order to compress cost of production, valve rod 3 is best with iron, if will avoid the long-time back of using phenomenons such as silk to occur drawing fully, then the manufactured materials of valve rod 3 also can be selected stainless steel or copper for use.The production and processing of valve gap 2 is a benchmark with valve rod 3, with the once property moulding on injection machine of corresponding mould, not only can make in enormous quantities, and manufacturing efficiency is very high, and the up-to-standard rate of product also is far longer than utilizes tratitional technology to make soft sealing gate valve.
For the soundness and the tightness of the interface that guarantees valve body 2 two ends, respectively be provided with a link of making by metal that is fastenedly connected with it at valve body 2 two ends jointings, this link be shaped as the cylindrical of hollow; Its inwall has been attacked internal thread, and is common, and the material of link can select for use hardness such as iron, tube or stainless steel bigger; The metallic material that resistance to compression is stronger; As a kind of optimal way, at the connection part of valve body 2 two ends jointings copper link 5 can be set, to avoid the corrosion of fluid.Adding man-hour, is benchmark with two copper links 5, valve body 1 once injection moulding is got final product on injection machine with corresponding mould.
Flashboard is as the open-shut device of soft sealing gate valve, and the quality of its quality directly has influence on the quality of soft sealing gate valve finished product, and traditional flashboard is to be skeleton with cast iron; For middle-size and small-size soft sealing gate valve, on the one hand, its skeleton is less; So processing is very inconvenient, on the other hand, flashboard 4 directly contacts with fluid; Cast iron is easy to get rusty, and convection cell causes secondary pollution.Therefore, flashboard is used in copper or the metallurgical powder skeleton as flashboard more in the existing technology, and still, the manufacture cost of copper is too high, be difficult to large-scale use, and the pollution of metallurgical powder is serious relatively.Flashboard 4 in this enforcement is the composite plastic flashboard, and it mainly is made up of two-part: the flashboard main body, and be arranged in the through hole of flashboard main body and shape is complementary with it, in order to connect the copper bank spare 10 of valve rod 3; Wherein, composite structrue layer is a design focal point of flashboard 4 in the present embodiment, and it is by the plastic skeleton 11 that is wrapped in copper bank spare 10 table walls, and the rubber layer 12 that is coated on this plastic skeleton 11 is formed; Wherein, rubber layer 12 also can be replaced by silica gel layer.The skeleton that will have flashboard thus now replaces with plastic skeleton; This plastic skeleton is generally selected alloy plastic or engineering plastics for use; Its chemical inertness is strong, can not mix with most of fluids or react, in addition; Alloy plastic or engineering plastics also have stronger resistance to compression, torsional property, can resist hydrodynamic pressure and can not produce big distortion.
The flashboard main body is provided with and runs through the flashboard main body through hole at two ends up and down, and 10 of copper bank spares are arranged in this through hole and with the flashboard main body and are fastenedly connected; In order further to reduce production costs, improved the competitiveness of product in market, as a kind of preferred structure, the via design on the flashboard main body is a step hole, copper bank spare 10 is arranged in the less hole, aperture in the step hole.Need to prove that the structure of copper bank spare 10 is all identical with copper link 6 with material, the two is that model varies in size, be named respectively at this, and be to distinguish for ease.During production and processing, be benchmark with copper bank spare 10, once the property molding and forming gets final product on injection machine; Very convenient; The flashboard that machines through above-mentioned steps still is semi-finished product, and it has only copper bank spare 10 and plastic skeleton 11, on this basis; On the table wall of plastic skeleton 11, coat one deck rubber layer 12 through the heat-vulcanized method, promptly accomplish the finished product of flashboard 4 and make.Utilize itself characteristic of plastics, on the one hand since the toughness of engineering plastics or alloy plastic itself and self-enrichment much larger than cast iron materials, so it to the destruction of rubber clad material much smaller than cast iron materials, thereby the working life of having improved product; On the other hand, form flexible sealing between rubber layer 12 and valve body 1 and the flashboard 4; Plastic skeleton 2 is own nonpoisonous and tasteless, water-fast, ageing-resistant, thereby when realizing elastic soft sealing, has avoided causing secondary pollution because of the former thereby convection cell of framework material.
In order better to realize present embodiment, also be provided with combination seal mechanism at the connection part of valve gap 2 and valve rod 3, this combination seal mechanism mainly is made up of first seal ring 7 and second seal ring 8, and valve rod 3 passes first seal ring 7 and second seal ring 8 simultaneously; Wherein, first seal ring 7 and valve rod 3 maintenance integrative-structures when valve gap 2 molding and forming, promptly accomplished assembling; And on the outer wall of second seal ring 8, be provided with outside thread; Simultaneously; Be provided with a groove at the top of valve gap 2; And the inwall of this groove is provided with the internal thread that the outside thread on the outer wall with second seal ring 8 is complementary, second seal ring 8 through the outside thread on it and the cooperation between the internal thread to realize the flexible connection with valve gap 2.Connection part at valve gap 2 and valve body 1 also is provided with the 3rd seal ring 9, and the 3rd seal ring 9 is arranged on valve body 1 and attacks a threaded end; First seal ring 7, second seal ring 8 and the 3rd seal ring 9 are the clad type round section joint ring, and it can realize sealing, can reduce the friction of valve rod 3, valve body 1 and seal ring again, reduce torsion, thereby make switch laborsaving more flexibly.Through this three seals circle gate valve is carried out multi-layer sealedly, prevented the leakage of conveyance conduit inner fluid effectively, thereby improved practicability of the present invention widely, strengthened the competitiveness of product in market.
Product component after the molding and forming, be assembled into finished product after, also need carry out the pressure test in the water through valve test bed, to judge whether National standard of finished product.Soft sealing gate valve can carry out also that electroplating surface, spray cross, following process such as silk-screen according to user's request; And, through change, can realize connecting with multiple modes such as screw thread, hot melts with different connecting tubes with copper bank spare 10 or copper link 6.
According to the foregoing description, just can realize the present invention well.
Claims (10)
1. anti-rotten anti-pollution type soft seal environmentally-friendly plastic gate valve; The valve body (1) that comprises three-port structure; Be arranged on the valve gap (2) of this valve body (1) top and its flexible connection; One end passes valve gap (2) and extends to that valve body (1) is inner, the other end end is provided with the valve rod (3) of adjusting handle (5), and the flashboard (4) that is arranged on valve rod (3) one ends, and it is characterized in that: said flashboard (4) is the composite plastic flashboard; And said valve body (1) is processed by Noryl with valve gap (2), and is provided with copper link (6) in two interface end of valve body (1).
2. the anti-pollution type soft seal of anti-corruption according to claim 1 environmentally-friendly plastic gate valve is characterized in that: the connection part at said valve rod (3) and valve gap (2) is provided with combination seal mechanism, and this combination seal mechanism is positioned at valve gap (2).
3. the anti-pollution type soft seal of anti-corruption according to claim 2 environmentally-friendly plastic gate valve; It is characterized in that: said combination seal mechanism comprises first seal ring (7) that is solidified as a whole with valve rod (3), and second seal ring (8) that flexibly connects with valve gap (2); Wherein, said valve rod (3) passes first seal ring (7) and second seal ring (8).
4. the anti-pollution type soft seal of anti-corruption according to claim 3 environmentally-friendly plastic gate valve; It is characterized in that: be provided with a groove at the top of said valve gap (2); And on the inwall of this groove, be provided with internal thread; On the outer wall of second seal ring (8), then be provided with the outside thread that is complementary with internal thread, valve gap (2) and second seal ring (8) are through the flexible connection that cooperates between internal thread and the outside thread.
5. the anti-pollution type soft seal of anti-corruption according to claim 4 environmentally-friendly plastic gate valve is characterized in that: said valve gap (2) and valve body (1) are through being threaded, and the connection part between the two is provided with the 3rd seal ring (9).
6. according to the anti-pollution type soft seal of each described anti-corruption of claim 1～5 environmentally-friendly plastic gate valve; It is characterized in that: said composite plastic flashboard comprises the flashboard main body of being formed and had through hole by composite structrue layer, and be arranged in the through hole of flashboard main body and shape is complementary with it, in order to connect the copper bank spare (10) of valve rod (3).
7. the anti-pollution type soft seal of anti-corruption according to claim 6 environmentally-friendly plastic gate valve; It is characterized in that: said composite structrue layer is by the plastic skeleton (11) that is wrapped in copper bank spare (10) table wall, and the rubber layer (12) that is coated on this plastic skeleton (11) is formed.
8. the anti-pollution type soft seal of anti-corruption according to claim 7 environmentally-friendly plastic gate valve, it is characterized in that: said plastic skeleton (11) is processed by engineering plastics or alloy plastic.
9. resist the processing technology of rotten anti-pollution type soft seal environmentally-friendly plastic gate valve, it is characterized in that: at first, be benchmark with the copper link, molding and forming valve body on injection machine; With the valve rod is benchmark, molding and forming valve gap on injection machine; With copper bank spare is benchmark, molding and forming flashboard on injection machine; Then, flashboard is tightened on the valve rod through copper bank spare, again valve gap is connected together with valve rod and valve body.
10. the processing technology of the anti-pollution type soft seal of anti-corruption according to claim 9 environmentally-friendly plastic gate valve; It is characterized in that; The concrete grammar of molding and forming flashboard is on injection machine: with copper bank spare is benchmark; Injection-molded plastic skeleton on injection machine, then, through hot vulcanization at plastic skeleton table wall adhesive rubber layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210340349.0A CN102829205B (en) | 2012-09-14 | 2012-09-14 | Anti-corrosive anti-pollution environment-friendly plastic brake valve with flexible seal and machining process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210340349.0A CN102829205B (en) | 2012-09-14 | 2012-09-14 | Anti-corrosive anti-pollution environment-friendly plastic brake valve with flexible seal and machining process thereof |
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| Publication Number | Publication Date |
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| CN102829205A true CN102829205A (en) | 2012-12-19 |
| CN102829205B CN102829205B (en) | 2014-01-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210340349.0A Expired - Fee Related CN102829205B (en) | 2012-09-14 | 2012-09-14 | Anti-corrosive anti-pollution environment-friendly plastic brake valve with flexible seal and machining process thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103016764A (en) * | 2013-01-06 | 2013-04-03 | 铜陵红星铜艺有限公司 | Method for manufacturing high-tightness hard sealing water supply and drainage gate valve |
| CN107830276A (en) * | 2017-11-27 | 2018-03-23 | 重庆优特模具有限公司 | Sandblasting pipeline |
| CN109159329A (en) * | 2018-09-27 | 2019-01-08 | 安徽龙川橡塑科技有限公司 | A kind of gate valve manufactures mold with rubber flashboard |
| CN109611570A (en) * | 2019-01-30 | 2019-04-12 | 黄长太 | A kind of valve flashboard made of Novel environment-friendlymaterial material and its production technology |
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| US4629160A (en) * | 1983-12-14 | 1986-12-16 | Bopp & Reuther Gmbh | Shutoff wedge for shutoff valve |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103016764A (en) * | 2013-01-06 | 2013-04-03 | 铜陵红星铜艺有限公司 | Method for manufacturing high-tightness hard sealing water supply and drainage gate valve |
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| CN109159329A (en) * | 2018-09-27 | 2019-01-08 | 安徽龙川橡塑科技有限公司 | A kind of gate valve manufactures mold with rubber flashboard |
| CN109611570A (en) * | 2019-01-30 | 2019-04-12 | 黄长太 | A kind of valve flashboard made of Novel environment-friendlymaterial material and its production technology |
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|---|---|
| CN102829205B (en) | 2014-01-01 |
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