CN109869499B - Flushing-resistant slurry valve - Google Patents
Flushing-resistant slurry valve Download PDFInfo
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- CN109869499B CN109869499B CN201910129651.3A CN201910129651A CN109869499B CN 109869499 B CN109869499 B CN 109869499B CN 201910129651 A CN201910129651 A CN 201910129651A CN 109869499 B CN109869499 B CN 109869499B
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- 238000011010 flushing procedure Methods 0.000 title claims abstract description 11
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- 239000000956 alloy Substances 0.000 claims abstract description 48
- 238000012856 packing Methods 0.000 claims abstract description 23
- 238000007789 sealing Methods 0.000 claims abstract description 10
- 229920001971 elastomer Polymers 0.000 claims description 29
- 239000005060 rubber Substances 0.000 claims description 29
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- XQVWYOYUZDUNRW-UHFFFAOYSA-N N-Phenyl-1-naphthylamine Chemical compound C=1C=CC2=CC=CC=C2C=1NC1=CC=CC=C1 XQVWYOYUZDUNRW-UHFFFAOYSA-N 0.000 claims description 10
- 229910001080 W alloy Inorganic materials 0.000 claims description 10
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 10
- 239000004033 plastic Substances 0.000 claims description 10
- 229920003023 plastic Polymers 0.000 claims description 10
- 238000002156 mixing Methods 0.000 claims description 8
- OWRCNXZUPFZXOS-UHFFFAOYSA-N 1,3-diphenylguanidine Chemical compound C=1C=CC=CC=1NC(=N)NC1=CC=CC=C1 OWRCNXZUPFZXOS-UHFFFAOYSA-N 0.000 claims description 6
- 230000003712 anti-aging effect Effects 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 5
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 5
- NKRHXEKCTWWDLS-UHFFFAOYSA-N [W].[Cr].[Co] Chemical compound [W].[Cr].[Co] NKRHXEKCTWWDLS-UHFFFAOYSA-N 0.000 claims description 5
- 238000009825 accumulation Methods 0.000 claims description 5
- 239000003795 chemical substances by application Substances 0.000 claims description 5
- 239000012763 reinforcing filler Substances 0.000 claims description 5
- 239000010959 steel Substances 0.000 claims description 5
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- 239000003365 glass fiber Substances 0.000 claims description 4
- 239000000843 powder Substances 0.000 claims description 4
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- 239000006229 carbon black Substances 0.000 claims description 3
- 239000002994 raw material Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 11
- 229920000468 styrene butadiene styrene block copolymer Polymers 0.000 description 11
- 239000005062 Polybutadiene Substances 0.000 description 8
- 239000004793 Polystyrene Substances 0.000 description 8
- 229920002857 polybutadiene Polymers 0.000 description 8
- 229920002223 polystyrene Polymers 0.000 description 8
- 230000002035 prolonged effect Effects 0.000 description 7
- 210000003298 dental enamel Anatomy 0.000 description 6
- 230000009477 glass transition Effects 0.000 description 6
- YDSXXPCQVNDGLY-UHFFFAOYSA-N [W].[Cr].[Co].[Ti] Chemical compound [W].[Cr].[Co].[Ti] YDSXXPCQVNDGLY-UHFFFAOYSA-N 0.000 description 5
- 238000005260 corrosion Methods 0.000 description 5
- 239000012530 fluid Substances 0.000 description 5
- 239000010426 asphalt Substances 0.000 description 4
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- 239000002253 acid Substances 0.000 description 3
- 239000003513 alkali Substances 0.000 description 3
- 238000009991 scouring Methods 0.000 description 3
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 2
- 244000043261 Hevea brasiliensis Species 0.000 description 2
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- 229920003052 natural elastomer Polymers 0.000 description 2
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- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
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- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- WUJISAYEUPRJOG-UHFFFAOYSA-N molybdenum vanadium Chemical compound [V].[Mo] WUJISAYEUPRJOG-UHFFFAOYSA-N 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
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Landscapes
- Sliding Valves (AREA)
- Lift Valve (AREA)
Abstract
A scour-resistant slurry valve comprises an upper valve shaft, a large gland, a valve body, a valve plate and a lower valve shaft, wherein the side surface of the valve body is provided with a water inlet and a water outlet; the top surface and the bottom surface of the valve body are respectively provided with a mounting hole of a large gland, the large gland is mounted in the mounting hole, the valve plate is supported and fixed in the valve body through the large gland, and the upper valve shaft and the lower valve shaft respectively penetrate through the large gland and then are connected with the valve plate; a packing and a bearing sleeve are arranged between the large gland and the valve shaft, and the packing gland presses the packing and the bearing sleeve supporting the valve shaft to rotate in the large gland; an upper bracket is arranged on the top surface of the valve body; the bottom of the valve body is provided with a lower bracket; a bottom cover for limiting the lower valve shaft is arranged on the lower bracket; a round hole-shaped valve plate channel for slurry to pass through is arranged on the valve plate; the valve seat is arranged at the flow inlet on the side surface of the valve body and is fixedly limited in the flow inlet through a nut; the aperture of the valve plate channel is smaller than the aperture of the alloy sleeve and larger than the aperture of the valve seat. The slurry valve has good sealing performance, high pressure flushing resistance and long service life.
Description
Technical Field
The invention relates to the technical field of valves, in particular to a flushing-resistant slurry valve.
Technical Field
The valve (valve) is a control component in the fluid conveying system and has the functions of stopping, adjusting, guiding, preventing countercurrent, stabilizing pressure, diverting or overflow pressure relief and the like. Valves for fluid control systems range from the simplest shut-off valves to the various valves used in extremely complex automatic control systems, which are quite diverse in variety and specification. The valve can be used for controlling the flow of various types of fluids such as air, water, steam, various corrosive media, slurry, oil products, liquid metal, radioactive media and the like. The valves are also classified into cast iron valves, cast steel valves, stainless steel valves (201, 304, 316, etc.), chrome molybdenum steel valves, chrome molybdenum vanadium steel valves, dual phase steel valves, plastic valves, nonstandard custom valves, etc. according to the materials.
However, valves used in high pressure slurry conditions are required to meet the high pressure, high temperature requirements, and some slurry valves are also reported in the publications, for example:
1. chinese patent: enamel slurry valve, application number: 201420280814.0, filing date: 2014.05.29, patentees: the address of the Shunfu fluid control technology Co., ltd: 450000, inventor: zhang Xufeng, liu Lijuan, li Anjun, wu Gongtao, zhang Ge, gu Yonggang, dan Maowei, dang Na, abstract: the utility model discloses an enamel slurry valve, which comprises: the valve body is internally provided with a valve cavity, the valve cavity is internally provided with a valve seat and a valve core, the valve body is connected with a valve cover, the valve core is connected with a valve rod, the inner wall of the valve body is provided with an enamel layer, the valve seat is provided with the enamel layer, the bottom of the valve cover is provided with the enamel layer, and the valve core is provided with the enamel layer. The anti-pollution capability of the valve is improved, the valve is easy to clean, the corrosion resistance is high, and the cost is low.
2. Chinese patent: large-caliber Y-shaped slurry valve with valve rod protection function, and application number is as follows: 201721049255.2, filing date: 2017.08.22, patentees: the address of the Shunfu fluid control technology Co., ltd: 450000 new development district chemical road No. 28 in zhengzhou city, henan province, inventor: meng Jianwei, liu Lijuan, dang Na, zhang Xufeng, zhu Ke, fan Yongzhen, li Shuai, abstract: the utility model discloses a large-caliber Y-shaped slurry valve with valve rod protection, which comprises: the valve body is connected with the valve cover, the valve seat and the valve clack are arranged in the valve body, the valve clack is connected with the valve rod, the upper part of the valve clack is provided with an inner sleeve, the lower part of the valve cover is provided with an outer sleeve, the inner sleeve stretches into the outer sleeve, and the inner sleeve can slide relative to the outer sleeve. The valve rod is not easy to bend and deform, so that the concentricity of the valve clack sealing surface and the valve seat sealing surface is ensured, a good sealing effect is achieved when the valve is closed, and the service life of the valve is prolonged.
3. Chinese patent: plunger type slurry valve, application number: 201120226778.6, filing date: 2011.06.30, patentees: precision valve, inc, address: 325000 Longwan area Yongqiang road 3283, the inventor: yang Liancheng, chen Yonggang, xie Jianguo, abstract: the utility model discloses a plunger type slurry valve which comprises a valve body, an upper valve body, a plunger, a valve rod, a hand wheel connecting seat, a support column, a valve rod nut and a limiting plate, wherein the valve body is fixedly connected with the upper valve body, an inner cavity of the valve body is connected with an inner cavity of the upper valve body, the plunger penetrates through the inner cavity of the upper valve body and is fixedly connected with one end of the valve rod, the hand wheel connecting seat is assembled on the other end of the valve rod, the hand wheel connecting seat is provided with the hand wheel linked with the valve rod, the upper valve body is fixed with the hand wheel connecting seat through the support column, the valve rod is fixed with the plunger through the valve rod nut, the limiting plate and the plunger are fixed through bolts, and a semicircular long groove matched with the support column in a sliding mode is formed in the limiting plate. The hand wheel is rotated to drive the valve rod to rotate and drive the plunger to lift at the same time, so that the slurry valve is controlled to be opened or closed, and the connection or disconnection of a pipeline medium is realized.
4. Chinese patent: slurry valve, application number: 01810597609.X, filing date: 018.06.11 applicants: the New Youwei valve, inc., address: the inventor of Gaoxin district Taishanlu 666 in su-state of 15129 Jiangsu province: wang Longsheng, zhou Jinrong, wang Jianhua, abstract: the invention relates to the technical field of valves, in particular to a slurry valve, which comprises: the valve seat is fixedly arranged at the lower end of the valve body, and the bracket is fixedly arranged at the upper end of the valve body; the valve rod axially penetrates through the support and the valve body, a valve clack matched with the valve seat is arranged at the bottom end of the valve rod, a valve rod nut is sleeved on the upper part of the valve rod, and a gap is reserved between the valve rod nut and the valve rod; the first anti-rotation structure is arranged on the valve rod and is provided with a first state for limiting the rotation of the valve rod and a second state for enabling the valve rod to rotate; the second anti-rotation structure is arranged on the valve rod nut and is provided with a third state allowing the valve rod nut to rotate and driving the valve rod to axially move and a fourth state limiting the valve rod nut to rotate; the two connecting structures are respectively arranged at two ends of the valve rod nut and fixedly connected with the valve rod, and the valve rod is synchronously driven to axially move by the connecting structures when the valve rod nut axially moves. The slurry valve can continuously grind on line and improve grinding efficiency.
The research of the inventor finds that at present, all domestic high-pressure slurry valves are generally Y-shaped stop valves, but because the structure adopts Y-shaped, vortex is easy to generate, the valve is damaged, the valve plate is positioned in the center of the valve cavity and is easy to be washed, the valve rod adopts a screw nut, so that the valve rod is difficult to seal and is exposed, the valve is easy to cause blocking and abrasion, the valve is integrally cast, the material of a washing position is difficult to replace, and the valve is required to be replaced completely, so that the cost is too high, and the overall service life is short; some adopt the ball valve structure of the hard seal, but because of adopting the sliding seal, cause the valve pocket to be unable to clear away, cause the valve to block after the material deposits, seal and adopt the sliding at the same time, or the spring pressure seals, the sealing surface is extremely fragile, the life-span is also not long; the half ball valve is adopted by a user, and the service life is very short due to the structural problems of the channel and the valve plate; the service life of the Y-shaped slurry valve which is best used at present is only 45 days in a special environment, which causes great harm to the production safety and order, so the high-pressure, high-temperature and high-corrosion resistant slurry valve is a difficult problem in the industry.
Disclosure of Invention
The invention aims at solving the problems existing in the prior art, and provides a scouring-resistant slurry valve which has good sealing property, long service life and low manufacturing cost and can be used for conveying high-pressure and high-temperature slurry.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
A flushing-resistant slurry valve comprises an upper valve shaft, a large gland, a valve body, a valve plate and a lower valve shaft, wherein the side surface of the valve body is provided with a flow inlet and a flow outlet; the top surface and the bottom surface of the valve body are respectively provided with a mounting hole of a large gland, the large gland is arranged in the mounting holes, and the valve plate is supported and fixed in the valve body through the large gland, so that the valve plate cannot move up and down; the upper valve shaft and the lower valve shaft respectively pass through large pressing covers arranged on the top surface and the bottom surface of the valve body and then are connected with the valve plate, the valve plate is connected with the valve shaft in an involute spline connection mode, and the valve plate and the valve shaft connecting hole are not impacted, so that the valve plate is firm and reliable; a packing and a bearing sleeve are arranged between the large gland and the valve shaft, and the packing gland presses the packing and the bearing sleeve supporting the valve shaft to rotate in the large gland; an upper bracket is arranged on the top surface of the valve body; the bottom of the valve body is provided with a lower bracket; a bottom cover for limiting the lower valve shaft is arranged on the lower bracket; a round hole-shaped valve plate channel for slurry to pass through is arranged on the valve plate; the valve seat is arranged at the flow inlet on the side surface of the valve body and is fixedly limited in the flow inlet through a nut; an alloy sleeve is arranged in the outflow port on the side surface of the valve body; the aperture of the alloy sleeve is larger than the aperture of the valve plate channel, the aperture of the valve plate channel is larger than the aperture of the valve seat, namely, slurry medium flows in and adopts a stepped structure, the feeding port flows out from the alloy sleeve in a guiding way from small to large, no vortex is generated, the impact on the valve body is extremely small, and the service life of the valve body is greatly prolonged.
Preferably: the valve seat sleeve is clamped and embedded in the channel of the valve seat; rubber pads are arranged at two ends of the valve seat sleeve; the aperture of the valve seat sleeve is also smaller than the aperture of the valve plate channel; when the valve plate is opened and closed, the rubber cushion can play a role in buffering, and when the valve plate is opened and closed, the impact on the valve seat can be reduced due to the fact that the rubber cushion has elastic compression. The rubber mat is prepared by mixing 35-50 parts of nonpolar rubber, 10-15 parts of SBS plastic, 10-15 parts of carbon black, 3-8 parts of glass fiber powder, 1-5 parts of organic accelerator diphenyl guanidine, 3-5 parts of reinforcing filler zinc oxide, 3-6 parts of anti-aging agent N-phenyl-alpha-naphthylamine and reinforcing agent rutile titanium dioxide.
Diphenyl guanidine as an anti-aging agent, zinc oxide as a reinforcing filler, N-phenyl-alpha-naphthylamine as an accelerator, and rutile titanium dioxide as a reinforcing agent. The preparation process includes mixing the materials, mixing at 90-110 deg.c for 5-10 min, and natural cooling to obtain the rubber cushion with high acid resistance, alkali resistance, oil resistance and high and low temperature resistance. The nonpolar rubber is natural rubber, styrene-butadiene rubber, butyl rubber or butadiene rubber. The SBS plastic is a styrene-butadiene-styrene triblock copolymer, a polystyrene chain segment and a polybutadiene chain segment in the SBS obviously show a two-phase structure, the polybutadiene is a continuous phase, the polystyrene is a disperse phase, so that the SBS plastic has 2 glass transition temperatures, the first glass transition temperature (Tg 1) is minus 88 ℃ to minus 83 ℃, the second glass transition temperature (Tg 2) is 90 ℃, and the end group polystyrene is aggregated between the Tg1 and Tg2 to form micro-domains which are dispersed between the polybutadiene continuous phase, so that the SBS plastic has the functions of physical crosslinking, fixing the chain segment, vulcanization reinforcement and cold flow prevention, has the high elasticity and fatigue resistance of vulcanized rubber, and when the temperature is increased to Tg2, the polystyrene phase is softened and flows so that the SBS has resin flow processability. The two-phase separation structure can form a space three-dimensional network structure with the asphalt matrix, so that the temperature performance, tensile performance, elasticity, cohesive property, stability of the mixture, aging resistance and the like of asphalt are effectively improved.
The organic accelerator D (diphenyl guanidine) has the advantages of promoting rubber vulcanization, and improving rubber hardness, heat resistance and soaking resistance.
The glass fiber powder can enhance the tensile force of the rubber pad.
The reinforcing filler zinc oxide can improve the hardness, heat resistance and soaking resistance of rubber.
The rutile titanium dioxide can improve the heat resistance, light resistance and weather resistance of rubber and plastic products, improve the physical and chemical properties of the plastic products, strengthen the mechanical strength of the products and prolong the service life.
The anti-aging agent N-phenyl-alpha-naphthylamine can improve the heat resistance, ozone resistance and flexibility resistance of rubber; so that the rubber has good continuous stability of anti-aging performance.
Note that the rubber pad can be replaced by other acid and alkali resistant materials as required, but waste plastics, waste rubber and reclaimed rubber materials cannot be used absolutely.
Preferably: the valve plate channel is internally inlaid with an alloy layer.
Preferably: the valve plate channel is a round hole-shaped channel with a large middle part and small two ends, is drum-like, and the flowing slurry medium impacts a small range nearby, so that the two sides of the valve cavity are difficult to form accumulation, and the valve plate can not be closed due to blockage.
Preferably: the colter is arranged in the middle of the sealing sphere of the valve body, and can scrape materials when slurry is crystallized in the valve body, so that resistance is reduced, and the valve plate is prevented from being closed due to overlarge resistance.
Preferably: the inner hole of the nut is horn-shaped, and the aperture close to the valve seat end is smaller.
Preferably: the valve seat, the nut, the valve seat sleeve, the alloy layer and the alloy sleeve are all made of titanium cobalt chromium tungsten alloy, and the hardness is required to be above 60 HRC-65 HR. The cobalt-chromium-tungsten alloy is prepared from the following raw materials in percentage by mass: 40-50% of Co, 25-30% of Cr, 8-10% of W, 2-4% of Ni and the balance of steel. The alloy is obtained by mixing and smelting the materials, and has the advantages of corrosion resistance, scratch resistance, erosion resistance and oxidation resistance.
The flushing-resistant slurry valve has the advantages that:
1. The valve seat, the nut, the valve seat sleeve, the alloy layer and the alloy sleeve all adopt the alloy with the high hardness which is suitable for scouring resistance and corrosion resistance, the hardness reaches 60HRC-65HR, and the sealing is difficult to damage, so that the service life of the valve is greatly prolonged, meanwhile, a valve seat protection device (the valve seat sleeve is embedded in a channel of the valve seat, and rubber gaskets are arranged at two ends of the valve seat sleeve) is additionally arranged, when the valve is opened, the protection seat moves forwards, the alloy surface is protected from impact, and when the valve is closed, the protection cover moves backwards, so that the valve is not influenced to be closed. The service life of the slurry is longer than 10 months when the slurry is applied to slurry transportation under the pressure of 60-100 kg.
2. The medium inflow adopts the ladder type structure, and the passageway from the feed inlet to the discharge gate is from small to big, and all flows from alloy cover direction, does not produce the vortex, and it is minimum to impact the valve body, makes the valve body life-span also improve greatly.
3. The valve plate and the valve shaft are connected by adopting shearing line splines, alloy is inlaid in the valve plate, the connecting holes of the valve plate and the valve shaft are not impacted, the valve plate is firm and reliable, the valve plate is supported by adopting a large gland, the valve plate cannot be shifted up and down, and the valve plate and the valve body are made of scouring-resistant alloy, so that the valve plate and the valve body have proper gaps, and the valve plate and the valve seat are sealed more reliably, and the valve has the advantages of corrosion resistance, scratch resistance, erosion resistance and oxidation resistance.
4. The valve plate channel on the valve plate is a round hole-shaped channel with big middle and small two ends, is drum-like, and the flowing slurry medium impacts the nearby small range, so that the two sides of the valve cavity are difficult to form accumulation, and the valve plate can not be closed due to blockage.
Drawings
FIG. 1 is a schematic diagram of the construction of the present flush resistant slurry valve;
FIG. 2 is a schematic view of the arrangement of the plow blade on the valve plate;
The name of the serial number in the figure is:
1. The valve comprises an upper valve shaft, 2, an upper support, 3, a packing gland, 4, a bearing sleeve, 5, packing, 6, a large gland, 7, a valve body, 8, a valve seat, 9, a nut, 10, a rubber pad, 11, a valve seat sleeve, 12, a coulter, 13, a valve plate, 14, an alloy layer, 15, a valve plate channel, 16, a bottom cover, 17, a lower valve shaft, 18, a lower support, 19 and an alloy sleeve.
Detailed Description
For a more detailed description of the present invention, the present flush resistant slurry valve is further described below with reference to the accompanying drawings.
As shown in the figure:
example 1
The flushing-resistant slurry valve comprises an upper valve shaft 1, a large gland 6, a valve body 7, a valve plate 13 and a lower valve shaft 17, wherein the side surface of the valve body 7 is provided with a water inlet and a water outlet; the top surface and the bottom surface of the valve body 7 are respectively provided with a mounting hole of the large gland 6, the large gland 6 is mounted in the mounting hole, the valve plate 13 is supported and fixed in the valve body 7 through the large gland 6, the upper valve shaft 1 and the lower valve shaft 17 respectively penetrate through the large gland 6 mounted on the top surface and the bottom surface of the valve body 7 and then are connected with the valve plate 13, the valve plate is connected with the valve shaft in an involute spline connection mode, and the valve plate and the valve shaft connecting hole are not impacted at all, so that the valve plate is firm and reliable; a packing 5 and a bearing sleeve 4 are arranged between the large gland 6 and the valve shaft, and the packing 5 and the bearing sleeve 4 supporting the valve shaft to rotate are pressed in the large gland 6 by the packing gland 3; the top surface of the valve body 7 is provided with an upper bracket 2; the bottom of the valve body 7 is provided with a lower bracket 12; a bottom cover 16 for limiting the lower valve shaft 17 is arranged on the lower bracket 12; a round hole-shaped valve plate channel 15 for slurry to pass through is arranged on the valve plate 13; the valve seat 8 is arranged at the inlet on the side surface of the valve body 7, and the valve seat 8 is fixedly limited in the inlet through the nut 9; an alloy sleeve 19 is arranged in the outflow port on the side surface of the valve body 7; the aperture of the alloy sleeve 19 is larger than the aperture of the valve plate channel 15, the aperture of the valve plate channel 15 is larger than the aperture of the valve seat 8, namely, slurry medium flows in and adopts a stepped structure, the feeding port is guided to flow out from the alloy sleeve from small to large, no vortex is generated, impact on the valve body is extremely small, and the service life of the valve body is greatly prolonged.
The valve plate channel 15 is embedded with an alloy layer.
The valve seat 8, the nut 9, the valve seat sleeve 11, the alloy layer 14 and the alloy sleeve 19 are all made of titanium-cobalt-chromium-tungsten alloy, and the hardness is required to be more than 60HRC-65 HR.
Example 2
The flushing-resistant slurry valve comprises an upper valve shaft 1, a large gland 6, a valve body 7, a valve plate 13 and a lower valve shaft 17, wherein the side surface of the valve body 7 is provided with a water inlet and a water outlet; the top surface and the bottom surface of the valve body 7 are respectively provided with a mounting hole of the large gland 6, the large gland 6 is mounted in the mounting hole, the valve plate 13 is supported and fixed in the valve body 7 through the large gland 6, the upper valve shaft 1 and the lower valve shaft 17 respectively penetrate through the large gland 6 mounted on the top surface and the bottom surface of the valve body 7 and then are connected with the valve plate 13, the valve plate is connected with the valve shaft in an involute spline connection mode, and the valve plate and the valve shaft connecting hole are not impacted at all, so that the valve plate is firm and reliable; a packing 5 and a bearing sleeve 4 are arranged between the large gland 6 and the valve shaft, and the packing 5 and the bearing sleeve 4 supporting the valve shaft to rotate are pressed in the large gland 6 by the packing gland 3; the top surface of the valve body 7 is provided with an upper bracket 2; the bottom of the valve body 7 is provided with a lower bracket 12; a bottom cover 16 for limiting the lower valve shaft 17 is arranged on the lower bracket 12; a round hole-shaped valve plate channel 15 for slurry to pass through is arranged on the valve plate 13; the valve seat 8 is arranged at the inlet on the side surface of the valve body 7, and the valve seat 8 is fixedly limited in the inlet through the nut 9; an alloy sleeve 19 is arranged in the outflow port on the side surface of the valve body 7; the aperture of the alloy sleeve 19 is larger than the aperture of the valve plate channel 15, the aperture of the valve plate channel 15 is larger than the aperture of the valve seat 8, namely, slurry medium flows in and adopts a stepped structure, the feeding port is guided to flow out from the alloy sleeve from small to large, no vortex is generated, impact on the valve body is extremely small, and the service life of the valve body is greatly prolonged.
A valve seat sleeve 11 is clamped in the channel of the valve seat 8; rubber pads 10 are arranged at two ends of the valve seat sleeve 11; the aperture of the valve seat sleeve 11 is also smaller than the aperture of the valve plate channel 15; when the valve plate is opened and closed, the cushion can play a role in buffering, so that the impact on the valve seat is reduced.
The valve plate channel 15 is embedded with an alloy layer.
The inner hole of the nut 9 is horn-shaped, and the aperture near the end of the valve seat 13 is smaller.
The valve seat 8, the nut 9, the valve seat sleeve 11, the alloy layer 14 and the alloy sleeve 19 are all made of titanium cobalt chromium tungsten alloy, and the hardness is required to reach more than 60HRC-65 HR.
Example 3
The flushing-resistant slurry valve comprises an upper valve shaft 1, a large gland 6, a valve body 7, a valve plate 13 and a lower valve shaft 17, wherein the side surface of the valve body 7 is provided with a water inlet and a water outlet; the top surface and the bottom surface of the valve body 7 are respectively provided with a mounting hole of the large gland 6, the large gland 6 is mounted in the mounting hole, the valve plate 13 is supported and fixed in the valve body 7 through the large gland 6, the upper valve shaft 1 and the lower valve shaft 17 respectively penetrate through the large gland 6 mounted on the top surface and the bottom surface of the valve body 7 and then are connected with the valve plate 13, the valve plate is connected with the valve shaft in an involute spline connection mode, and the valve plate and the valve shaft connecting hole are not impacted at all, so that the valve plate is firm and reliable; a packing 5 and a bearing sleeve 4 are arranged between the large gland 6 and the valve shaft, and the packing 5 and the bearing sleeve 4 supporting the valve shaft to rotate are pressed in the large gland 6 by the packing gland 3; the top surface of the valve body 7 is provided with an upper bracket 2; the bottom of the valve body 7 is provided with a lower bracket 12; a bottom cover 16 for limiting the lower valve shaft 17 is arranged on the lower bracket 12; a round hole-shaped valve plate channel 15 for slurry to pass through is arranged on the valve plate 13; the valve seat 8 is arranged at the inlet on the side surface of the valve body 7, and the valve seat 8 is fixedly limited in the inlet through the nut 9; an alloy sleeve 19 is arranged in the outflow port on the side surface of the valve body 7; the aperture of the alloy sleeve 19 is larger than the aperture of the valve plate channel 15, the aperture of the valve plate channel 15 is larger than the aperture of the valve seat 8, namely, slurry medium flows in and adopts a stepped structure, the feeding port is guided to flow out from the alloy sleeve from small to large, no vortex is generated, impact on the valve body is extremely small, and the service life of the valve body is greatly prolonged.
A valve seat sleeve 11 is clamped in the channel of the valve seat 8; rubber pads 10 are arranged at two ends of the valve seat sleeve 11; the aperture of the valve seat sleeve 11 is also smaller than the aperture of the valve plate channel 15; when the valve plate is opened and closed, the cushion can play a role in buffering, so that the impact on the valve seat is reduced.
The valve plate channel 15 is embedded with an alloy layer.
The valve plate channel 15 is a round hole-shaped channel with a large middle part and small two ends, is drum-like, and the flowing slurry medium impacts a small range nearby, so that the two sides of the valve cavity are difficult to form accumulation, and the problem that the valve plate cannot be closed due to blockage is avoided.
The valve seat 8, the nut 9, the valve seat sleeve 11, the alloy layer 14 and the alloy sleeve 19 are all made of titanium-cobalt-chromium-tungsten alloy, and the hardness is required to be more than 60HRC-65 HR.
Example 4
The flushing-resistant slurry valve comprises an upper valve shaft 1, a large gland 6, a valve body 7, a valve plate 13 and a lower valve shaft 17, wherein the side surface of the valve body 7 is provided with a water inlet and a water outlet; the top surface and the bottom surface of the valve body 7 are respectively provided with a mounting hole of the large gland 6, the large gland 6 is mounted in the mounting hole, the valve plate 13 is supported and fixed in the valve body 7 through the large gland 6, the upper valve shaft 1 and the lower valve shaft 17 respectively penetrate through the large gland 6 mounted on the top surface and the bottom surface of the valve body 7 and then are connected with the valve plate 13, the valve plate is connected with the valve shaft in an involute spline connection mode, and the valve plate and the valve shaft connecting hole are not impacted at all, so that the valve plate is firm and reliable; a packing 5 and a bearing sleeve 4 are arranged between the large gland 6 and the valve shaft, and the packing 5 and the bearing sleeve 4 supporting the valve shaft to rotate are pressed in the large gland 6 by the packing gland 3; the top surface of the valve body 7 is provided with an upper bracket 2; the bottom of the valve body 7 is provided with a lower bracket 12; a bottom cover 16 for limiting the lower valve shaft 17 is arranged on the lower bracket 12; a round hole-shaped valve plate channel 15 for slurry to pass through is arranged on the valve plate 13; the valve seat 8 is arranged at the inlet on the side surface of the valve body 7, and the valve seat 8 is fixedly limited in the inlet through the nut 9; an alloy sleeve 19 is arranged in the outflow port on the side surface of the valve body 7; the aperture of the alloy sleeve 19 is larger than the aperture of the valve plate channel 15, the aperture of the valve plate channel 15 is larger than the aperture of the valve seat 8, namely, slurry medium flows in and adopts a stepped structure, the feeding port is guided to flow out from the alloy sleeve from small to large, no vortex is generated, impact on the valve body is extremely small, and the service life of the valve body is greatly prolonged.
A valve seat sleeve 11 is clamped in the channel of the valve seat 8; rubber pads 10 are arranged at two ends of the valve seat sleeve 11; the aperture of the valve seat sleeve 11 is also smaller than the aperture of the valve plate channel 15; when the valve plate is opened and closed, the cushion can play a role in buffering, so that the impact on the valve seat is reduced.
The rubber pad 10 is prepared by mixing 35-50 parts of nonpolar rubber, 10-15 parts of SBS plastic, 10-15 parts of carbon black, 3-8 parts of glass fiber powder, 1-5 parts of organic accelerator diphenyl guanidine, 3-5 parts of reinforcing filler zinc oxide, 3-6 parts of anti-aging agent N-phenyl-alpha-naphthylamine and reinforcing agent rutile titanium dioxide.
The preparation process includes mixing the materials, mixing at 90-110 deg.c for 5-10 min, and natural cooling to obtain the rubber cushion with high acid resistance, alkali resistance, oil resistance and high and low temperature resistance. The nonpolar rubber is natural rubber, styrene-butadiene rubber, butyl rubber or butadiene rubber. Styrene-butadiene-styrene triblock copolymer, polystyrene chain segment and polybutadiene chain segment in SBS obviously present two-phase structure, polybutadiene is continuous phase, polystyrene is disperse phase, make it have 2 glass transition temperatures, the first glass transition temperature (Tg 1) is-88 to-83 ℃, the second glass transition temperature (Tg 2) is 90 ℃, end group polystyrene gathers together and forms the microcell to disperse between polybutadiene continuous phase between Tg 1-Tg 2, play physical crosslinking, fixed chain segment, vulcanize reinforcing and cold flow prevention effects, have high elasticity and fatigue resistance of vulcanized rubber, when the temperature rises to Tg2, the polystyrene phase softens and flows and makes SBS have resin flow processability. The two-phase separation structure can form a space three-dimensional network structure with the asphalt matrix, so that the temperature performance, tensile performance, elasticity, cohesive property, stability of the mixture, aging resistance and the like of asphalt are effectively improved.
The valve plate channel 15 is embedded with an alloy layer.
The valve plate channel 15 is a round hole-shaped channel with a large middle part and small two ends, is drum-like, and the flowing slurry medium impacts a small range nearby, so that the two sides of the valve cavity are difficult to form accumulation, and the problem that the valve plate cannot be closed due to blockage is avoided.
The coulter 12 is arranged in the middle of the sealing sphere of the valve body 7, when slurry is crystallized in the valve body, the coulter 12 can scrape materials, the resistance is reduced, and the situation that the valve plate cannot be closed due to overlarge resistance is avoided.
The inner hole of the nut 9 is horn-shaped, and the aperture near the end of the valve seat 13 is smaller.
The valve seat 8, the nut 9, the valve seat sleeve 11, the alloy layer 14 and the alloy sleeve 19 are all made of titanium-cobalt-chromium-tungsten alloy, and the hardness is required to be above 60 HRC-65 HR. The cobalt-chromium-tungsten alloy is prepared from the following raw materials in percentage by mass: 40-50% of Co, 25-30% of Cr, 8-10% of W, 2-4% of Ni and the balance of steel.
Application examples
In a Guangxi certain mining field, ore pulp is required to be conveyed, the pressure is 80-90 kg, DN 350Y-shaped slurry valves are arranged on the original conveying pipelines, and in the use process, the slurry valves are required to be maintained or replaced within 45 days, and due to the fact that the service life of the Y-shaped slurry valves is short, technicians also select slurry valves which can be purchased in the market, but the problem of short service life cannot be solved; finally, the mine trial the scour-resistant slurry valve disclosed by the invention, so far, the slurry valve does not need to be maintained or replaced for nearly nine months, and the cost of a single scour-resistant slurry valve is only 200 yuan higher than that of the slurry valve used originally.
The above description is not intended to limit the invention to the particular embodiments disclosed, but to limit the invention to the particular embodiments disclosed, as many variations, modifications, additions and substitutions are possible, without departing from the scope of the invention as disclosed in the accompanying claims.
Claims (6)
1. The flushing-resistant slurry valve for conveying high-pressure and high-temperature slurry comprises an upper valve shaft (1), a large gland (6), a valve body (7), a valve plate (13) and a lower valve shaft (17), wherein two side surfaces of the valve body (7) are respectively provided with a flow inlet and a flow outlet; the method is characterized in that: the top surface and the bottom surface of the valve body (7) are respectively provided with mounting holes of a large gland (6), the large gland (6) is mounted in the mounting holes, the valve plate (13) is supported and fixed in the valve body (7) through the large gland (6), the upper valve shaft (1) and the lower valve shaft (17) respectively penetrate through the large gland (6) mounted on the top surface and the bottom surface of the valve body (7) and then are connected with the valve plate (13), a packing (5) and a bearing sleeve (4) are mounted between the large gland (6) and the valve shaft, and the packing (5) and the bearing sleeve (4) for supporting the rotation of the valve shaft are pressed in the large gland (6) by the packing gland (3); an upper bracket (2) is arranged on the top surface of the valve body (7); a lower bracket (18) is arranged at the bottom of the valve body (7); a bottom cover (16) for limiting the lower valve shaft (17) is arranged on the lower bracket (18); a round hole-shaped valve plate channel (15) for slurry to pass through is arranged on the valve plate (13); a valve seat (8) is arranged at the flow inlet at the side surface of the valve body (7), and the valve seat (8) is fixedly limited in the flow inlet through a screw nut (9); a valve seat sleeve (11) is embedded in the channel of the valve seat (8); rubber pads (10) are arranged at two ends of the valve seat sleeve (11); the aperture of the valve seat sleeve (11) is also smaller than the aperture of the valve plate channel (15); when the valve plate is opened and closed, the buffer function can be realized due to the function of the rubber cushion, so that the impact on the valve seat is reduced; an alloy sleeve (19) is arranged in the outflow port on the side surface of the valve body (7); the aperture of the alloy sleeve (19) is larger than that of the valve plate channel (15), the aperture of the valve plate channel (15) is larger than that of the valve seat (8), slurry medium flows in a stepped structure, the feed inlet is guided to flow out from the alloy sleeve from small to large, no vortex is generated, and the impact on the valve body is extremely small; an alloy layer is embedded in the valve plate channel (15); the valve plate channel (15) is a round hole-shaped channel with a large middle part and small two ends, is drum-like, and the flowing slurry medium impacts a small range nearby, so that the two sides of the valve cavity are difficult to form accumulation, and the valve plate can not be closed due to blockage; the middle of the sealing sphere of the valve body (7) is provided with the coulter (12), when slurry is crystallized in the valve body, the coulter (12) can scrape materials, the resistance is reduced, and the problem that the valve plate cannot be closed due to overlarge resistance is avoided.
2. The flush resistant slurry valve for high pressure, high temperature slurry delivery of claim 1, wherein: the rubber pad (10) is prepared by mixing 35-50 parts of nonpolar rubber, 10-15 parts of SBS plastic, 10-15 parts of carbon black, 3-8 parts of glass fiber powder, 1-5 parts of organic accelerator diphenyl guanidine, 3-5 parts of reinforcing filler zinc oxide, 3-6 parts of anti-aging agent N-phenyl-alpha-naphthylamine and reinforcing agent rutile titanium dioxide.
3. The flush resistant slurry valve for high pressure, high temperature slurry delivery of claim 1, wherein: the inner hole of the nut (9) is horn-shaped, and the aperture near the end of the valve seat (8) is smaller.
4. The flush resistant slurry valve for high pressure, high temperature slurry delivery of claim 1, wherein: the valve seat (8), the screw nut (9), the valve seat sleeve (11) and the alloy sleeve (19) are all made of cobalt-chromium-tungsten alloy, and the hardness is required to reach 60-65 HRC.
5. The flush resistant slurry valve for high pressure, high temperature slurry delivery of claim 1, wherein: the alloy layer is made of cobalt-chromium-tungsten alloy, and the hardness of the alloy layer is required to reach 60-65 HRC.
6. The flush resistant slurry valve for high pressure, high temperature slurry delivery according to claim 4 or 5, wherein: the cobalt-chromium-tungsten alloy is prepared from the following raw materials in percentage by mass: 40-50% of Co, 25-30% of Cr, 8-10% of W, 2-4% of Ni and the balance of steel.
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| CN201910129651.3A CN109869499B (en) | 2019-02-21 | 2019-02-21 | Flushing-resistant slurry valve |
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| CN114658908A (en) * | 2020-12-22 | 2022-06-24 | 台山市意立达瓦斯器材有限公司 | Novel low-pressure gas pressure reducing valve |
| CN115654170B (en) * | 2022-12-07 | 2023-03-28 | 江苏欧利威流体科技有限公司 | Hydraulic drive ball valve |
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| CN200978980Y (en) * | 2006-08-30 | 2007-11-21 | 山东益龙阀门有限责任公司 | Streamline-shaped wear proof eccentrically-pivoted valve |
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| CN207161754U (en) * | 2017-07-03 | 2018-03-30 | 刘向阳 | Double-sealing eccentric ball valve |
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| CN209818782U (en) * | 2019-02-21 | 2019-12-20 | 广西科德阀门有限责任公司 | Scouring-resistant slurry valve |
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2019
- 2019-02-21 CN CN201910129651.3A patent/CN109869499B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200978980Y (en) * | 2006-08-30 | 2007-11-21 | 山东益龙阀门有限责任公司 | Streamline-shaped wear proof eccentrically-pivoted valve |
| CN202580094U (en) * | 2012-04-19 | 2012-12-05 | 吴忠仪表有限责任公司 | Hard alloy lining sleeve straight pipe split-type cam bending valve |
| CN207161754U (en) * | 2017-07-03 | 2018-03-30 | 刘向阳 | Double-sealing eccentric ball valve |
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