CN113388226B - High-strength impact-resistant polyether-ether-ketone material, preparation method and sealing assembly valve thereof - Google Patents
High-strength impact-resistant polyether-ether-ketone material, preparation method and sealing assembly valve thereof Download PDFInfo
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- CN113388226B CN113388226B CN202110795303.7A CN202110795303A CN113388226B CN 113388226 B CN113388226 B CN 113388226B CN 202110795303 A CN202110795303 A CN 202110795303A CN 113388226 B CN113388226 B CN 113388226B
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L61/00—Compositions of condensation polymers of aldehydes or ketones; Compositions of derivatives of such polymers
- C08L61/04—Condensation polymers of aldehydes or ketones with phenols only
- C08L61/16—Condensation polymers of aldehydes or ketones with phenols only of ketones with phenols
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- 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
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- 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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/30—Sulfur-, selenium- or tellurium-containing compounds
- C08K2003/3009—Sulfides
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- 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
- C08K2201/00—Specific properties of additives
- C08K2201/002—Physical properties
- C08K2201/005—Additives being defined by their particle size in general
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- 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
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/14—Polymer mixtures characterised by other features containing polymeric additives characterised by shape
- C08L2205/16—Fibres; Fibrils
Abstract
The invention relates to a high-strength impact-resistant polyether-ether-ketone material, a preparation method and a sealing assembly valve thereof, which are composed of the following components in parts by weight: 8-15.3% of carbon nano tube, 3-5.6% of silicon carbide, 1.5-3.5% of hollow glass microwave, 0-5.4% of nylon fiber, 1.1-3.5% of molybdenum disulfide powder, 3.5-12.1% of alicyclic hydrocarbon solvent and the balance of polyether ether ketone micropowder. The valve of the sealing assembly comprises a valve body, a valve plate and a polyether-ether-ketone sealing ring, wherein the valve plate is embedded in the valve body, the outer surface of the valve plate is coated with the polyether-ether-ketone sealing ring and is in sliding connection with the inner surface of the valve body through the polyether-ether-ketone sealing ring, and the polyether-ether-ketone sealing ring comprises a bearing ring body and a sealing ring sleeve. On one hand, the invention has the advantages of low cost of production raw materials, wide sources, simple production process and high production efficiency, and can effectively improve the structural strength, toughness and wear resistance of the polyether-ether-ketone material; on the other hand, the sealing performance and the corrosion resistance of the valve equipment made of the polyether-ether-ketone material during operation are greatly improved, so that the purposes of improving the operation stability and prolonging the service life of the valve equipment are achieved.
Description
Technical Field
The invention relates to a high-strength impact-resistant polyether-ether-ketone material, a preparation method and a sealing assembly valve thereof, belonging to the technical field of high polymer materials.
Background
At present, the polyetheretherketone material is widely applied in the fields of valves and the like, but in practical use, the structural strength and the abrasion resistance of the traditional polyetheretherketone material for the valves are found to be poor to different degrees in operation, so that the valves are easy to fail due to abrasion factors; on the other hand, in order to improve the performance of the polyetheretherketone material, the production raw material and production process cost of the polyetheretherketone valve component is high, the production and operation efficiency is low, and the actual use requirement is difficult to be effectively met.
Disclosure of Invention
In order to solve the defects in the prior art, the invention provides the high-strength impact-resistant polyether-ether-ketone material, the preparation method and the sealing assembly valve thereof, so that the sealing property and the corrosion resistance of valve equipment using the polyether-ether-ketone material during operation are greatly improved, and the operation stability and the service life of the valve equipment are improved.
A high-strength impact-resistant polyether-ether-ketone material is composed of the following components in parts by weight: 8-15.3% of carbon nano tube, 3-5.6% of silicon carbide, 1.5-3.5% of hollow glass microwave, 0-5.4% of nylon fiber, 1.1-3.5% of molybdenum disulfide powder, 3.5-12.1% of alicyclic hydrocarbon solvent and the balance of polyether ether ketone micropowder.
Furthermore, the particle size of the silicon carbide, molybdenum disulfide powder and polyetheretherketone micro powder is 10-50 nanometers, and the microwave particle size of the hollow glass is 30-50 micrometers.
Furthermore, the diameter of the nylon fiber monofilament is 9-13 microns, and the mesh number is 300-400 meshes.
A preparation method of a high-strength impact-resistant polyether-ether-ketone material comprises the following steps:
s1, preliminary mixing, namely adding the carbon nano tube, the silicon carbide, the hollow glass microwave, the nylon fiber, the molybdenum disulfide powder, the alicyclic hydrocarbon solvent and the polyether-ether-ketone micro powder into a reaction kettle for preliminary mixing, adding deionized water accounting for 1.1-2.5 times of the total amount of the mixture into the reaction kettle, and finally performing ultrasonic homogenization on the mixture in a normal-temperature environment;
s2, preheating, after the step S1 is carried out, sealing the reaction kettle under the condition that the ultrasonic homogeneous state is kept unchanged, simultaneously reducing the pressure of the sealed reaction kettle, keeping the air pressure in the sealed reaction kettle constant at 0.1-0.5 times of standard atmospheric pressure, and then uniformly heating the mixture in the reaction kettle to 40-80 ℃ until the water content in the mixture is less than 1%; simultaneously, preheating a valve component mould to 60 ℃ and keeping the temperature constant for later use;
s3, casting and molding, namely pouring the preheated mixture obtained in the step S2 into a molding die, wherein the weight of the mixture poured into the molding die is 1.1-1.5 times of the weight of the required valve component, applying ultrasonic vibration acting force to the outer surface of the molding die, simultaneously heating the molding die to 300-520 ℃, applying constant pressure of 600-1200 Kg/cm3 to the mixture in the molding die in the heating process, keeping the temperature and the pressure for 3-10 minutes, stopping vibration, and naturally cooling to normal temperature in the pressure keeping state;
s4, demolding and finishing, after the step S2 is completed, opening the mold and taking out a blank in the mold, and then finishing the surface quality of the blank through machining;
and S5, performing strengthening treatment, namely putting the trimmed blank in the step S3 into a forming die again, applying a constant pressure of 800-1500 Kg/cm3 to the blank, raising the temperature to 340-380 ℃ at a constant speed of 20-35 ℃/min, preserving the heat for 3-10 min, cooling to 80-120 ℃ along with a furnace, preserving the heat for 1-3 h, cooling to normal temperature, and performing demoulding operation to obtain the finished valve assembly.
A high-strength impact-resistant sealing assembly valve made of a polyether-ether-ketone material comprises a valve body, a valve plate and a polyether-ether-ketone sealing ring, wherein the valve plate is embedded in the valve body, the outer surface of the valve plate is coated with the polyether-ether-ketone sealing ring and is in sliding connection with the inner surface of the valve body through the polyether-ether-ketone sealing ring, the polyether-ether-ketone sealing ring comprises a bearing ring body and a sealing ring sleeve, the bearing ring body and the sealing ring sleeve are of a closed annular structure, the outer side surface and the inner side surface of the bearing ring body are respectively provided with a sealing cavity and a connecting cavity which are coaxially distributed with the bearing ring body, the depths of the sealing cavity and the connecting cavity are not less than 5 mm, the distance between the sealing cavity and the connecting cavity is not less than 10 mm, the bearing ring body is coated outside the valve plate through the connecting cavity, the side wall and the bottom of the connecting cavity are both abutted against the valve plate, and the rear half part of the sealing ring sleeve is embedded in the sealing cavity, with bear the coaxial distribution of ring body, and sealing ring cover latter half and sealing chamber lateral wall sliding connection to establish the isolation clearance of at least 1 millimeter with the sealing chamber bottom within a definite time, sealing ring cover first half surpasss bears the weight of at least 5 millimeters of ring body lateral surface, keep apart a plurality of apertures of bearing ring body side surface equipartition that the clearance corresponds and be 0.1-3 millimeters water conservancy diversion mouth, water conservancy diversion mouth encircles and bears the weight of ring body axis equipartition, and quantity is no less than 3.
Furthermore, the sealing cavity is of a groove structure with an isosceles trapezoid cross section, and the width of a groove opening of the sealing cavity is 10% -30% of the width of a groove bottom.
Further, the sealing ring cover includes sealing strip and bearing plate, wherein the sealing strip is the rectangle structure for the cross section, and the sealing strip rear end face is connected with the bearing plate, the bearing plate width is 1.1-2.1 times of sealing strip width to 1-2 millimeters less than sealing chamber bottom width and lie in the water conservancy diversion mouth top, the bearing plate cross section is arbitrary one structure in rectangle and the circular arc type.
Further, bearing plate and sealing strip formula structure as an organic whole, and bearing plate and sealing strip hookup location department establish the cross section and be the buffer memory chamber of rectangle, the buffer memory chamber degree of depth is not more than bearing plate and sealing strip total height 1/2 to for the cyclic annular structure with the coaxial distribution of seal ring cover, buffer memory chamber and seal chamber communicate each other.
Furthermore, the lower end face of the bearing plate is provided with a plurality of elastic sheets which are uniformly distributed around the axis of the bearing plate, and the height of each elastic sheet is not less than 1 mm.
The sealing component valve of the high-strength impact-resistant polyether-ether-ketone material comprises a valve body, a valve plate and a polyether-ether-ketone sealing ring, wherein the valve plate is embedded in the valve body, the outer surface of the valve plate is coated with the polyether-ether-ketone sealing ring and is in sliding connection with the inner surface of the valve body through the polyether-ether-ketone sealing ring, the polyether-ether-ketone sealing ring comprises a bearing ring body and a sealing ring sleeve, the production raw materials are low in cost and wide in source, the production process is simple, the production efficiency is high, and the structural strength, the toughness and the wear resistance of the polyether-ether-ketone material can be effectively improved; the invention greatly improves the sealing property and the corrosion resistance of the valve equipment using the polyetheretherketone material during operation, thereby achieving the purposes of improving the operation stability and prolonging the service life of the valve equipment.
Drawings
The invention is described in detail below with reference to the drawings and the detailed description;
FIG. 1 is a schematic flow diagram of the process of the present invention;
FIG. 2 is a schematic diagram of the external structure of the PEEK sealing ring of the present invention;
FIG. 3 is a schematic view of the internal structure of the PEEK sealing ring of the present invention;
FIG. 4 is a schematic view of a partial structure of a PEEK sealing ring according to the present invention;
FIG. 5 is a schematic view of a seal ring sleeve according to the present invention.
The reference numbers in the figures: the valve comprises a valve body 1, a valve plate 2, a polyether-ether-ketone sealing ring 3, a sealing cavity 4, a connecting cavity 5, an isolation gap 6, a flow guide opening 7, a bearing ring body 31, a sealing ring sleeve 32, a sealing strip 321, a pressure bearing plate 322, a buffer cavity 323 and an elastic sheet 324.
Detailed Description
In order to facilitate the implementation of the technical means, creation features, achievement of the purpose and the efficacy of the invention, the invention is further described below with reference to specific embodiments.
Example 1
As shown in figure 1, the high-strength impact-resistant polyether-ether-ketone material is composed of the following components in parts by weight: 8% of carbon nano tube, 3% of silicon carbide, 1.5% of hollow glass microwave, 1.1% of molybdenum disulfide powder, 3.5% of alicyclic hydrocarbon solvent and the balance of polyetheretherketone micro powder.
Further optimizing, the particle size of the silicon carbide, the molybdenum disulfide powder and the polyetheretherketone micro powder is 10 nanometers, and the microwave particle size of the hollow glass is 30 micrometers.
Furthermore, the diameter of the nylon fiber monofilament is 9 microns, and the mesh number is 300 meshes.
A preparation method of a high-strength impact-resistant polyether-ether-ketone material comprises the following steps:
s1, preliminary mixing, namely adding the carbon nano tube, the silicon carbide, the hollow glass microwave, the nylon fiber, the molybdenum disulfide powder, the alicyclic hydrocarbon solvent and the polyether-ether-ketone micro powder into a reaction kettle for preliminary mixing, adding deionized water accounting for 1.1 times of the total amount of the mixture into the reaction kettle, and finally carrying out ultrasonic homogenization on the mixture in a normal-temperature environment;
s2, preheating, after the step S1 is carried out, sealing the reaction kettle under the condition that the ultrasonic homogeneous state is kept unchanged, simultaneously reducing the pressure of the sealed reaction kettle, keeping the air pressure in the sealed reaction kettle constant at 0.1 time of standard atmospheric pressure, and then heating the mixture in the reaction kettle to 40 ℃ at a constant speed until the water content in the mixture is less than 1%; simultaneously, preheating a valve component mould to 60 ℃ and keeping the temperature constant for later use;
s3, casting and molding, namely pouring the preheated mixture obtained in the step S2 into a molding die, wherein the weight of the mixture poured into the molding die is 1.1 times of the weight of the required valve component, applying ultrasonic vibration acting force to the outer surface of the molding die, simultaneously heating the molding die to 300 ℃, applying constant pressure of 600Kg/cm3 to the mixture in the molding die in the heating process, keeping the temperature and the pressure for 10 minutes, stopping vibration, and naturally cooling to normal temperature under the pressure keeping state;
s4, demolding and finishing, after the step S2 is completed, opening the mold and taking out a blank in the mold, and then finishing the surface quality of the blank through machining;
and S5, performing strengthening treatment, namely putting the trimmed blank in the step S3 into a forming die again, applying a constant pressure of 800Kg/cm3 to the blank, uniformly heating to 340 ℃ at a speed of 20 ℃/min, preserving heat for 10 min, cooling to 80 ℃ along with a furnace, preserving heat for 3 h, cooling to normal temperature, and performing demoulding operation to obtain the finished valve assembly.
Example 2
As shown in figure 1, the high-strength impact-resistant polyether-ether-ketone material is composed of the following components in parts by weight: 15.3% of carbon nano tube, 5.6% of silicon carbide, 3.5% of hollow glass microwave, 5.4% of nylon fiber, 3.5% of molybdenum disulfide powder, 12.1% of alicyclic hydrocarbon solvent and the balance of polyetheretherketone micro powder.
In this embodiment, the particle size of the silicon carbide, the molybdenum disulfide powder and the polyetheretherketone micro powder is 50 nanometers, and the microwave particle size of the hollow glass is 50 micrometers.
Preferably, the diameter of the nylon fiber monofilament is 13 microns, and the mesh number is 400 meshes.
A preparation method of a high-strength impact-resistant polyether-ether-ketone material comprises the following steps:
s1, preliminary mixing, namely adding the carbon nano tube, the silicon carbide, the hollow glass microwave, the nylon fiber, the molybdenum disulfide powder, the alicyclic hydrocarbon solvent and the polyether-ether-ketone micro powder into a reaction kettle for preliminary mixing, adding deionized water accounting for 2.5 times of the total amount of the mixture into the reaction kettle, and finally carrying out ultrasonic homogenization on the mixture in a normal-temperature environment;
s2, preheating, after the step S1 is carried out, sealing the reaction kettle under the condition that the ultrasonic homogeneous state is kept unchanged, simultaneously reducing the pressure of the sealed reaction kettle, keeping the air pressure in the sealed reaction kettle constant at 0.5 times of standard atmospheric pressure, and then heating the mixture in the reaction kettle to 80 ℃ at a constant speed until the water content in the mixture is less than 1%; simultaneously, preheating a valve component mould to 60 ℃ and keeping the temperature constant for later use;
s3, casting and molding, namely pouring the preheated mixture obtained in the step S2 into a molding die, wherein the weight of the mixture poured into the molding die is 1.5 times of the weight of the required valve assembly, applying ultrasonic vibration acting force to the outer surface of the molding die, heating the molding die to 520 ℃, applying constant pressure of 1200Kg/cm3 to the mixture in the molding die in the heating process, keeping the temperature and the pressure for 3 minutes, stopping vibration, and naturally cooling to normal temperature under the pressure keeping state;
s4, demolding and finishing, after the step S2 is completed, opening the mold and taking out a blank in the mold, and then finishing the surface quality of the blank through machining;
and S5, performing strengthening treatment, namely putting the trimmed blank in the step S3 into a forming die again, applying a constant pressure of 1500Kg/cm3 to the blank, uniformly heating to 380 ℃ at a speed of 35 ℃/min, preserving heat for 3 min, cooling to 120 ℃ along with a furnace, preserving heat for 1 h, cooling to normal temperature, and performing demoulding operation to obtain the finished valve assembly.
Example 3
As shown in figure 1, the high-strength impact-resistant polyether-ether-ketone material is composed of the following components in parts by weight: 8.3% of carbon nano tube, 4.3% of silicon carbide, 2.8% of hollow glass microwave, 1.4% of nylon fiber, 2.3% of molybdenum disulfide powder, 4.1% of alicyclic hydrocarbon solvent and the balance of polyetheretherketone micro powder.
In this embodiment, the particle size of the silicon carbide, molybdenum disulfide powder and polyetheretherketone micropowder is 30 nanometers, and the microwave particle size of the hollow glass is 40 micrometers; the diameter of the nylon fiber monofilament is 10 microns, and the mesh number is 350 meshes.
A preparation method of a high-strength impact-resistant polyether-ether-ketone material comprises the following steps:
s1, preliminary mixing, namely adding the carbon nano tube, the silicon carbide, the hollow glass microwave, the nylon fiber, the molybdenum disulfide powder, the alicyclic hydrocarbon solvent and the polyether-ether-ketone micro powder into a reaction kettle for preliminary mixing, adding deionized water accounting for 1.8 times of the total amount of the mixture into the reaction kettle, and finally carrying out ultrasonic homogenization on the mixture in a normal-temperature environment;
s2, preheating, after the step S1 is carried out, sealing the reaction kettle under the condition that the ultrasonic homogeneous state is kept unchanged, simultaneously reducing the pressure of the sealed reaction kettle, keeping the air pressure in the sealed reaction kettle constant at 0.3 times of standard atmospheric pressure, and then heating the mixture in the reaction kettle to 60 ℃ at a constant speed until the water content in the mixture is less than 1%; simultaneously, preheating a valve component mould to 60 ℃ and keeping the temperature constant for later use;
s3, casting and molding, namely pouring the preheated mixture obtained in the step S2 into a molding die, wherein the weight of the mixture poured into the molding die is 1.3 times of the weight of the required valve component, applying an ultrasonic vibration acting force to the outer surface of the molding die, heating the molding die to 420 ℃, applying a constant pressure of 1000Kg/cm3 to the mixture in the molding die in the heating process, keeping the temperature and the pressure for 8 minutes, stopping vibration, and naturally cooling to the normal temperature in the pressure keeping state;
s4, demolding and finishing, after the step S2 is completed, opening the mold and taking out a blank in the mold, and then finishing the surface quality of the blank through machining;
and S5, performing strengthening treatment, namely putting the trimmed blank in the step S3 into a forming die again, applying a constant pressure of 1200Kg/cm3 to the blank, uniformly heating to 360 ℃ at a speed of 30 ℃/min, preserving heat for 5 min, cooling to 90 ℃ along with a furnace, preserving heat for 1.5 h, cooling to normal temperature, and performing demoulding operation to obtain the finished valve assembly.
Example 4
As shown in figure 1, the high-strength impact-resistant polyether-ether-ketone material is composed of the following components in parts by weight: 12.1% of carbon nano tube, 5.5% of silicon carbide, 2.2% of hollow glass microwave, 2.1% of nylon fiber, 2.5% of molybdenum disulfide powder, 9.1% of alicyclic hydrocarbon solvent and the balance of polyetheretherketone micro powder.
Furthermore, the particle size of the silicon carbide, molybdenum disulfide powder and polyetheretherketone micro powder is 10-50 nanometers, and the microwave particle size of the hollow glass is 40 micrometers.
Furthermore, the diameter of the nylon fiber monofilament is 10 microns, and the mesh number is 300 meshes.
A preparation method of a high-strength impact-resistant polyether-ether-ketone material comprises the following steps:
s1, preliminary mixing, namely adding the carbon nano tube, the silicon carbide, the hollow glass microwave, the nylon fiber, the molybdenum disulfide powder, the alicyclic hydrocarbon solvent and the polyether-ether-ketone micro powder into a reaction kettle for preliminary mixing, adding deionized water accounting for 2.1 times of the total amount of the mixture into the reaction kettle, and finally carrying out ultrasonic homogenization on the mixture in a normal-temperature environment;
s2, preheating, after the step S1 is carried out, sealing the reaction kettle under the condition that the ultrasonic homogeneous state is kept unchanged, simultaneously reducing the pressure of the sealed reaction kettle, keeping the air pressure in the sealed reaction kettle constant at 0.4 times of standard atmospheric pressure, and then heating the mixture in the reaction kettle to 70 ℃ at a constant speed until the water content in the mixture is less than 1%; simultaneously, preheating a valve component mould to 60 ℃ and keeping the temperature constant for later use;
s3, casting and molding, namely pouring the preheated mixture obtained in the step S2 into a molding die, wherein the weight of the mixture poured into the molding die is 1.2 times of the weight of the required valve component, applying ultrasonic vibration acting force to the outer surface of the molding die, heating the molding die to 420 ℃, applying constant pressure of 900Kg/cm3 to the mixture in the molding die in the heating process, keeping the temperature and the pressure for 3-10 minutes, stopping vibration, and naturally cooling to normal temperature in the pressure keeping state;
s4, demolding and finishing, after the step S2 is completed, opening the mold and taking out a blank in the mold, and then finishing the surface quality of the blank through machining;
and S5, performing strengthening treatment, namely putting the trimmed blank in the step S3 into a forming die again, applying 1300Kg/cm3 constant pressure to the blank, uniformly heating to 360 ℃ at a speed of 31 ℃/min, preserving heat for 4 min, cooling to 95 ℃ along with a furnace, preserving heat for 2.5 h, cooling to normal temperature, and performing demoulding operation to obtain the finished valve assembly.
In addition, as shown in fig. 2-3, the high-strength impact-resistant peek material seal assembly valve includes a valve body 1, a valve plate 2 and a peek seal ring 3, wherein the valve plate 2 is embedded in the valve body 1, the outer surface of the valve plate 2 is coated with the peek seal ring 3 and is slidably connected with the inner surface of the valve body 1 through the peek seal ring 3, the peek seal ring 3 includes a bearing ring body 31 and a seal ring sleeve 32, wherein the bearing ring body 31 and the seal ring sleeve 32 are both closed ring structures, the outer side surface and the inner side surface of the bearing ring body 31 are respectively provided with a seal cavity 4 and a connection cavity 5 which are coaxially distributed with the bearing ring body 31, the depths of the seal cavity 4 and the connection cavity 5 are not less than 5 mm, the distance between the seal cavity 4 and the connection cavity 5 is not less than 10 mm, the bearing ring body 31 is coated outside the valve plate 2 through the connection cavity 5, and the lateral wall and the bottom of connecting chamber 5 all offset with valve plate 2, half embedded in sealed chamber 4 behind the seal ring cover 32, with bear the coaxial distribution of ring body 31, and half and 4 lateral walls sliding connection in sealed chamber behind the seal ring cover 32 to with 4 bottoms in sealed chamber establish at least 1 millimeter's isolation clearance 6, half surpasss in the first part of seal ring cover 32 and bears the at least 5 millimeters of ring body 31 lateral surface, keep apart the water conservancy diversion mouth 7 that a plurality of apertures of 31 side surface equipartitions of ring body 31 side surface equipartitions of clearance 6 correspondences are 0.1-3 millimeters, water conservancy diversion mouth 7 encircles and bears 31 axis equipartitions of ring body, and quantity is no less than 3.
As shown in fig. 4-5, the sealing cavity 4 is a groove structure with an isosceles trapezoid cross section, and the width of the groove opening is 10% -30% of the width of the groove bottom.
In this embodiment, the sealing ring sleeve 32 includes a sealing strip 321 and a bearing plate 322, wherein the sealing strip 321 is a rectangular structure for the cross section, the rear end face of the sealing strip 321 is connected with the bearing plate 322, the width of the bearing plate 322 is 1.1-2.1 times of the width of the sealing strip 321, 1-2 mm smaller than the width of the bottom of the sealing cavity 4 and located above the flow guide port 7, and the cross section of the bearing plate 322 is any one of a rectangular structure and an arc structure.
It should be noted that, the pressure-bearing plate 322 and the sealing strip 321 are of an integral structure, and a buffer cavity 323 with a rectangular cross section is arranged at the connecting position of the pressure-bearing plate 322 and the sealing strip 321, the depth of the buffer cavity 323 is not greater than 1/2 of the total height of the pressure-bearing plate 322 and the sealing strip 321, and the buffer cavity 323 and the sealing cavity 4 are communicated with each other, and are of an annular structure coaxially distributed with the sealing ring sleeve 32.
Furthermore, the lower end face of the pressure bearing plate 322 is provided with a plurality of elastic sheets 324 uniformly distributed around the axis of the pressure bearing plate 322, and the height of the elastic sheets 324 is not less than 1 mm.
On one hand, the invention has the advantages of low cost of production raw materials, wide sources, simple production process and high production efficiency, and can effectively improve the structural strength, toughness and wear resistance of the polyether-ether-ketone material; on the other hand, the sealing performance and the corrosion resistance of the valve equipment made of the polyether-ether-ketone material during operation are greatly improved, so that the purposes of improving the operation stability and prolonging the service life of the valve equipment are achieved.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (9)
1. A sealing component valve prepared from a high-strength impact-resistant polyether-ether-ketone material is characterized by comprising a valve body (1), a valve plate (2) and a polyether-ether-ketone sealing ring (3), wherein the valve plate (2) is embedded in the valve body (1), the outer surface of the valve plate is coated with the polyether-ether-ketone sealing ring (3) and is in sliding connection with the inner surface of the valve body (1) through the polyether-ether-ketone sealing ring (3), the polyether-ether-ketone sealing ring (3) comprises a bearing ring body (31) and a sealing ring sleeve (32), the bearing ring body (31) and the sealing ring sleeve (32) are both of a closed annular structure, a sealing cavity (4) and a connecting cavity (5) which are coaxially distributed with the bearing ring body (31) are respectively arranged on the outer side surface and the inner side surface of the bearing ring body (31), the depth of the sealing cavity (4) and the depth of the connecting cavity (5) are not less than 5 mm, and the distance between the sealing cavity (4) and the connecting cavity (5) is not less than 10 mm, bear ring body (31) through connecting chamber (5) cladding outside valve plate (2), and the lateral wall and the bottom of connecting chamber (5) all offset with valve plate (2), inlay in sealed chamber (4) after sealed ring cover (32), with bear ring body (31) coaxial distribution, and sealed ring cover (32) latter half and sealed chamber (4) lateral wall sliding connection to establish isolation clearance (6) of 1 millimeter at least between sealed chamber (4) bottom, sealed ring cover (32) first half surpasss bears ring body (31) lateral surface 5 millimeters at least, the water conservancy diversion mouth (7) that bear ring body (31) lateral surface equipartition a plurality of apertures that isolation clearance (6) correspond are 0.1-3 millimeters, water conservancy diversion mouth (7) encircle and bear ring body (31) axis equipartition, and the quantity is no less than 3.
2. The high-strength impact-resistant valve with the sealing assembly made of the polyether-ether-ketone material according to claim 1, wherein the sealing assembly is characterized in that: the sealing cavity (4) is of a groove structure with an isosceles trapezoid cross section, and the width of a groove opening is 10% -30% of the width of a groove bottom.
3. The high-strength impact-resistant valve with the sealing assembly made of the polyether-ether-ketone material according to claim 1, wherein the sealing assembly is characterized in that: sealing ring cover (32) include sealing strip (321) and bearing plate (322), sealing strip (321) rear end face is connected with bearing plate (322), bearing plate (322) width is 1.1-2.1 times of sealing strip (321) width to than sealed chamber (4) bottom width 1-2 millimeters less and lie in water conservancy diversion mouth (7) top, bearing plate (322) cross section is arbitrary one kind structure in rectangle and the circular arc type.
4. The valve with the sealing component made of the high-strength impact-resistant PEEK material according to claim 3, wherein: bearing plate (322) and sealing strip (321) formula structure as an organic whole, and bearing plate (322) and sealing strip (321) hookup location department establish the cross section and personally submit buffer memory chamber (323) of rectangle, buffer memory chamber (323) degree of depth is not more than bearing plate (322) and sealing strip (321) total height 1/2 to for the annular structure with sealed ring cover (32) coaxial distribution, buffer memory chamber (323) and sealed chamber (4) communicate each other.
5. The valve with the sealing component made of the high-strength impact-resistant PEEK material according to claim 3, wherein: the bearing plate (322) lower terminal surface establish a plurality of shell fragment (324) of surrounding bearing plate (322) axis equipartition, shell fragment (324) height is not less than 1 millimeter.
6. The high-strength impact-resistant valve with the sealing assembly made of the polyether-ether-ketone material according to claim 1, wherein the sealing assembly is characterized in that: the high-strength impact-resistant polyether-ether-ketone material comprises the following components in parts by weight: 8-15.3% of carbon nano tube, 3-5.6% of silicon carbide, 1.5-3.5% of hollow glass microwave, 0-5.4% of nylon fiber, 1.1-3.5% of molybdenum disulfide powder, 3.5-12.1% of alicyclic hydrocarbon solvent and the balance of polyether ether ketone micropowder.
7. The valve with the sealing component made of the high-strength impact-resistant PEEK material according to claim 6, wherein: the particle size of the silicon carbide, molybdenum disulfide powder and polyetheretherketone micro powder is 10-50 nanometers, and the microwave particle size of the hollow glass is 30-50 micrometers.
8. The valve with the sealing component made of the high-strength impact-resistant PEEK material according to claim 6, wherein: the diameter of the nylon fiber monofilament is 9-13 microns, and the mesh number is 300-400 meshes.
9. The valve with the sealing component made of the high-strength impact-resistant PEEK material according to claim 6, wherein: the preparation method of the high-strength impact-resistant polyether-ether-ketone material comprises the following steps:
s1, preliminary mixing, namely adding the carbon nano tube, the silicon carbide, the hollow glass microwave, the nylon fiber, the molybdenum disulfide powder, the alicyclic hydrocarbon solvent and the polyether-ether-ketone micro powder into a reaction kettle for preliminary mixing, adding deionized water accounting for 1.1-2.5 times of the total amount of the mixture into the reaction kettle, and finally performing ultrasonic homogenization on the mixture in a normal-temperature environment;
s2, preheating, after the step S1 is carried out, sealing the reaction kettle under the condition that the ultrasonic homogeneous state is kept unchanged, simultaneously reducing the pressure of the sealed reaction kettle, keeping the air pressure in the sealed reaction kettle constant at 0.1-0.5 times of standard atmospheric pressure, then uniformly heating the mixture in the reaction kettle to 40-80 ℃ until the water content in the mixture is less than 1%, and simultaneously preheating the valve component mold to 60 ℃ and keeping the temperature for later use;
s3, casting and molding, namely pouring the preheated mixture obtained in the step S2 into a molding die, wherein the weight of the mixture poured into the molding die is 1.1-1.5 times of the weight of the required valve component, applying ultrasonic vibration acting force to the outer surface of the molding die, simultaneously heating the molding die to 300-520 ℃, applying constant pressure of 600-1200 Kg/cm3 to the mixture in the molding die in the heating process, keeping the temperature and the pressure for 3-10 minutes, stopping vibration, and naturally cooling to normal temperature in the pressure keeping state;
s4, demolding and finishing, after the step S3 is completed, opening the mold and taking out a blank in the mold, and then finishing the surface quality of the blank through machining;
and S5, performing strengthening treatment, namely putting the trimmed blank in the step S4 into a forming die again, applying a constant pressure of 800-1500 Kg/cm3 to the blank, raising the temperature to 340-380 ℃ at a constant speed of 20-35 ℃/min, preserving the heat for 3-10 min, cooling to 80-120 ℃ along with a furnace, preserving the heat for 1-3 h, cooling to normal temperature, and performing demoulding operation to obtain the finished valve assembly.
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