CN114135493B - Corrosion-resistant chemical sludge pump body and manufacturing process thereof - Google Patents
Corrosion-resistant chemical sludge pump body and manufacturing process thereof Download PDFInfo
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- CN114135493B CN114135493B CN202111434479.6A CN202111434479A CN114135493B CN 114135493 B CN114135493 B CN 114135493B CN 202111434479 A CN202111434479 A CN 202111434479A CN 114135493 B CN114135493 B CN 114135493B
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- silicon carbide
- sand
- resin
- carbide sand
- corrosion
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- 238000005260 corrosion Methods 0.000 title claims abstract description 31
- 230000007797 corrosion Effects 0.000 title claims abstract description 31
- 239000000126 substance Substances 0.000 title claims abstract description 23
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 17
- 239000010802 sludge Substances 0.000 title description 2
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims abstract description 148
- 229910010271 silicon carbide Inorganic materials 0.000 claims abstract description 114
- 239000004576 sand Substances 0.000 claims abstract description 81
- 229920005989 resin Polymers 0.000 claims abstract description 53
- 239000011347 resin Substances 0.000 claims abstract description 53
- 239000002002 slurry Substances 0.000 claims abstract description 29
- 239000002131 composite material Substances 0.000 claims abstract description 21
- 239000000843 powder Substances 0.000 claims abstract description 20
- 238000002156 mixing Methods 0.000 claims abstract description 14
- 239000003795 chemical substances by application Substances 0.000 claims description 14
- 238000002485 combustion reaction Methods 0.000 claims description 13
- 239000002184 metal Substances 0.000 claims description 13
- 239000000203 mixture Substances 0.000 claims description 12
- 239000000654 additive Substances 0.000 claims description 11
- 230000000996 additive effect Effects 0.000 claims description 11
- 229920002050 silicone resin Polymers 0.000 claims description 11
- 229910003902 SiCl 4 Inorganic materials 0.000 claims description 9
- 238000003756 stirring Methods 0.000 claims description 9
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 8
- 229910004298 SiO 2 Inorganic materials 0.000 claims description 8
- 239000011148 porous material Substances 0.000 claims description 8
- 229910010293 ceramic material Inorganic materials 0.000 claims description 6
- 239000007789 gas Substances 0.000 claims description 6
- 239000001257 hydrogen Substances 0.000 claims description 5
- 229910052739 hydrogen Inorganic materials 0.000 claims description 5
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 claims description 5
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 4
- 238000004140 cleaning Methods 0.000 claims description 4
- LAQFLZHBVPULPL-UHFFFAOYSA-N methyl(phenyl)silicon Chemical compound C[Si]C1=CC=CC=C1 LAQFLZHBVPULPL-UHFFFAOYSA-N 0.000 claims description 4
- 239000012466 permeate Substances 0.000 claims description 4
- 239000004593 Epoxy Substances 0.000 claims description 3
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 3
- 239000003054 catalyst Substances 0.000 claims description 3
- 238000011010 flushing procedure Methods 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 230000007062 hydrolysis Effects 0.000 claims description 3
- 238000006460 hydrolysis reaction Methods 0.000 claims description 3
- 239000013049 sediment Substances 0.000 claims description 3
- 239000002518 antifoaming agent Substances 0.000 claims description 2
- 238000002360 preparation method Methods 0.000 claims description 2
- 239000000919 ceramic Substances 0.000 claims 2
- 239000000463 material Substances 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 63
- 238000005299 abrasion Methods 0.000 description 12
- 230000000052 comparative effect Effects 0.000 description 11
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 9
- 229910052710 silicon Inorganic materials 0.000 description 9
- 239000010703 silicon Substances 0.000 description 9
- 239000002994 raw material Substances 0.000 description 7
- 238000005452 bending Methods 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- 239000002253 acid Substances 0.000 description 3
- 239000003513 alkali Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 239000002585 base Substances 0.000 description 2
- 239000003822 epoxy resin Substances 0.000 description 2
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- 239000006004 Quartz sand Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000007822 coupling agent Substances 0.000 description 1
- 239000013530 defoamer Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- KPUWHANPEXNPJT-UHFFFAOYSA-N disiloxane Chemical class [SiH3]O[SiH3] KPUWHANPEXNPJT-UHFFFAOYSA-N 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 238000005243 fluidization Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D7/00—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts
- F04D7/02—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type
- F04D7/04—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type the fluids being viscous or non-homogenous
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C67/00—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00
- B29C67/24—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00 characterised by the choice of material
- B29C67/242—Moulding mineral aggregates bonded with resin, e.g. resin concrete
- B29C67/243—Moulding mineral aggregates bonded with resin, e.g. resin concrete for making articles of definite length
- B29C67/244—Moulding mineral aggregates bonded with resin, e.g. resin concrete for making articles of definite length by vibrating the composition before or during moulding
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
- C04B20/10—Coating or impregnating
- C04B20/1055—Coating or impregnating with inorganic materials
- C04B20/1066—Oxides, Hydroxides
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B26/00—Compositions of mortars, concrete or artificial stone, containing only organic binders, e.g. polymer or resin concrete
- C04B26/30—Compounds having one or more carbon-to-metal or carbon-to-silicon linkages ; Other silicon-containing organic compounds; Boron-organic compounds
- C04B26/32—Compounds having one or more carbon-to-metal or carbon-to-silicon linkages ; Other silicon-containing organic compounds; Boron-organic compounds containing silicon
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
- C09C1/28—Compounds of silicon
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C3/00—Treatment in general of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling properties
- C09C3/06—Treatment with inorganic compounds
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/02—Selection of particular materials
- F04D29/026—Selection of particular materials especially adapted for liquid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/426—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/426—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid pumps
- F04D29/4286—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid pumps inside lining, e.g. rubber
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/2038—Resistance against physical degradation
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/23—Acid resistance, e.g. against acid air or rain
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2300/00—Materials; Properties thereof
- F05D2300/20—Oxide or non-oxide ceramics
- F05D2300/22—Non-oxide ceramics
- F05D2300/226—Carbides
- F05D2300/2261—Carbides of silicon
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2300/00—Materials; Properties thereof
- F05D2300/30—Inorganic materials other than provided for in groups F05D2300/10 - F05D2300/2291
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Organic Chemistry (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Materials Engineering (AREA)
- Inorganic Chemistry (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention relates to the technical field of manufacturing of chemical slurry pumps, and discloses a corrosion-resistant chemical slurry pump body and a manufacturing process thereof. The invention has the following advantages and effects: according to the invention, the resin silicon carbide composite material is prepared by mixing the silicon carbide sand, the silicon carbide micro powder and the silicon carbide whiskers, the large-diameter silicon carbide sand can form the aggregate of the resin silicon carbide composite material, gaps among the silicon carbide sand are filled with the silicon carbide micro powder, the toughness of the resin silicon carbide composite material can be enhanced by the silicon carbide whiskers, and the three materials are mutually combined to prepare the pump body with high strength, good toughness, wear resistance and impact resistance.
Description
Technical Field
The invention relates to the technical field of chemical slurry pump manufacturing, in particular to a corrosion-resistant chemical slurry pump body and a manufacturing process thereof.
Background
The resin material has unique mechanical tribological property and good corrosion resistance, but the pure resin material has lower fracture toughness and thermal deformation temperature, is directly used as a pump body with lower service life, and is difficult to be directly used as a metal substitute. The silicon carbide has the advantages of high hardness, wear resistance, corrosion resistance and the like, and the pump body with high strength and good wear resistance can be manufactured by combining the silicon carbide with the resin. However, the silicon carbide has low density and is easy to generate air holes due to the characteristic that the silicon carbide does not shrink in the sintering process, and the air holes are basically in an opening communication structure, so that the actual contact area of the silicon carbide and a corrosive medium is far greater than the surface area of the silicon carbide, and the corrosion resistance effect of the silicon carbide is reduced.
Disclosure of Invention
The invention aims to provide a corrosion-resistant chemical slurry pump body and a manufacturing process thereof, wherein the pump body has the effects of high strength, good toughness and acid and alkali resistance, and is suitable for conveying various acid and alkali mediums.
The technical aim of the invention is realized by the following technical scheme: the utility model provides a wear-resisting corrosion resistant chemical industry sediment stuff pump, includes the pump case, the pump case is formed by organic-inorganic composite ceramic material pouring, and the pump case embeds there is the metal skeleton, still be provided with a plurality of thread bush on the pump case, thread bush and metal skeleton fixed connection.
The invention is further provided with: the organic-inorganic composite ceramic material comprises modified silicon carbide sand, silicon carbide micro powder, silicon carbide whisker, resin, a curing agent and an additive.
The invention is further provided with: the modified silicon carbide sand is prepared by the following steps:
s1, cleaning the silicon carbide sand by adopting acetone, and then placing the cleaned silicon carbide sand in SiCl 4 In the solution, under the condition of pressurization, the silicon carbide sand and SiCl are reacted 4 The solution is fully mixed to ensure SiCl 4 The solution permeates into the silicon carbide sand pores;
s2, silicon carbide sand is processed from SiCl 4 Centrifugally separating the solution, feeding the silicon carbide sand into a combustion chamber containing steam, hydrogen and air for combustion to enable SiCl in the pores of the silicon carbide sand 4 Hydrolysis to SiO 2 And HCl gas;
s3, will be filled with SiO 2 And (3) flushing the silicon carbide sand by adopting alkaline gas to remove residual HCl, thereby obtaining the modified silicon carbide sand.
The invention is further provided with: the silicon carbide sand is burnt in a combustion chamber in a fluidized state, and the burning temperature is 1200-1500 ℃.
The invention is further provided with: the modified silicon carbide sand comprises the following components in parts by mass: 30-50 parts of 16-20 meshes, 10-20 parts of 40-50 meshes; the silicon carbide micro powder comprises 15 to 20 parts of 300 to 400 meshes; 1-3 parts of silicon carbide whisker; 15-20 parts of resin; 3-5 parts of curing agent; 1-3 parts of additive.
The invention is further provided with: the resin is one of methyl phenyl silicone resin, methyl silicone resin and epoxy modified organic silicone resin.
The invention is further provided with: the additive comprises one or more of a silane coupling agent, an accelerator, a lubricant, a catalyst and a defoaming agent.
The invention is further provided with: the preparation method comprises the following steps:
step one, preparing modified silicon carbide sand, namely adding a curing agent into resin, uniformly stirring, fully mixing silicon carbide micro powder, silicon carbide whiskers and an additive, and stirring and mixing the mixture with the mixture of the resin and the curing agent;
slowly adding the modified silicon carbide sand into the mixture of the resin, the curing agent, the silicon carbide sand micro powder and the silicon carbide whisker in the first step, and continuously stirring and mixing;
and step three, after uniformly mixing, starting a high-frequency vibration forming machine, injecting the mixture into a chemical slurry pump mould, heating and solidifying, and demoulding to obtain the chemical slurry pump body.
The invention is further provided with: the metal framework is preinstalled in the chemical slurry pump die.
The beneficial effects of the invention are as follows:
1. the porosity of the silicon carbide sand is higher, so that the contact area between the silicon carbide sand and corrosive medium is larger, the acid and alkali corrosion resistance of the silicon carbide sand is reduced, and the modified silicon carbide sand adopts SiO 2 The holes are filled, so that corrosive medium can be prevented from entering the silicon carbide sand, and the corrosion resistance of the pump body is enhanced; the impurity in the silicon carbide sand pores can be removed by adopting acetone cleaning, so that SiCl is obtained 4 The solution can completely permeate into the silicon carbide sand, and the SiO produced by the method of the invention 2 The pores of the silicon carbide sand can be completely filled, and meanwhile, the strength of the silicon carbide sand can be enhanced; part of SiO generated on the surface of the silicon carbide sand can be generated by polishing the silicon carbide sand by adopting a ball mill 2 Separated from silicon carbide and then vacuum cleaner is used to remove the silicon carbideSiO 2 And (5) removing fine sand.
2. SiO in modified silicon carbide sand 2 The surface of the silicon carbide pump body is provided with a large number of hydroxyl groups, the hydroxyl groups have high reactivity, the silicon resin is used as an adhesive, and the modified silicon carbide sand can interact with the hydrogen bond of siloxane in the silicon resin, so that the silicon resin has good compatibility with the modified silicon carbide, is tightly combined, and can further enhance the strength and toughness of the resin silicon carbide pump body.
3. The silicone resin containing methyl has strong hydrophobicity and good acid-base resistance and pollution resistance, and is suitable for acid-base transmission mediums.
4. The silicon carbide sand burns in the combustion chamber in a fluidization state, on one hand, the steam, the hydrogen and the air in the combustion chamber can be fully mixed with the silicon carbide sand, so that SiCl in the silicon carbide sand can be fully mixed 4 Fully burn to generate SiO 2 The method comprises the steps of carrying out a first treatment on the surface of the On the other hand, the silicon carbide sand can be dispersed, and SiO generated in the combustion process is avoided 2 Adhesion and even distribution of a layer of SiO on the surface of the silicon carbide sand 2 And the subsequent combination of the silicon carbide sand and the silicon resin is facilitated.
5. According to the invention, the resin silicon carbide composite material is prepared by mixing the silicon carbide sand, the silicon carbide micro powder and the silicon carbide whiskers, the large-diameter silicon carbide sand can form the aggregate of the resin silicon carbide composite material, the strength of the aggregate is ensured, gaps among the silicon carbide sand are filled by the silicon carbide micro powder, so that the resin silicon carbide composite material is more compact, the toughness of the resin silicon carbide composite material can be enhanced by the silicon carbide whiskers, and the three materials are mutually combined to prepare the pump body with high strength, good toughness, wear resistance and impact resistance.
6. The silicon carbide micro powder, the silicon carbide whisker and the modified silicon carbide sand are gradually added into the resin, so that the silicon carbide micro powder and the silicon carbide whisker can be uniformly wrapped around the silicon carbide sand, the consistency of the resin silicon carbide composite material is good, the silicon carbide micro powder and the silicon carbide whisker are firstly mixed with the additive and then are put into the resin, and the coupling agent in the additive can play a role in dispersing the silicon carbide micro powder and the silicon carbide whisker, so that the agglomeration of the silicon carbide micro powder and the silicon carbide whisker is avoided.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic view of the pump casing structure of embodiment 1.
Fig. 2 is a schematic diagram of a mold structure of a slurry pump mold in example 1.
In the figure, 1, a pump shell; 2. a metal skeleton; 3. a mold; 4. a runner core.
Detailed Description
The technical scheme of the present invention will be clearly and completely described in connection with specific embodiments. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to fall within the scope of the invention.
The technical scheme of the present invention will be clearly and completely described in connection with specific embodiments. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to fall within the scope of the invention.
Example 1:
the utility model provides a wear-resisting corrosion resistant chemical industry sediment stuff pump, includes pump case 1, as shown in fig. 1, and pump case 1 has organic inorganic composite ceramic material pouring to form, and pump case 1 embeds metal skeleton 2, and as shown in fig. 1, metal skeleton 2 inlays in organic inorganic composite ceramic material, and metal skeleton's shape and position can be adjusted as required, still is provided with a plurality of thread bush on the pump case 1, thread bush and metal skeleton 2 fixed connection. As shown in fig. 2, the chemical slurry pump mold 3 comprises a front mold plate, a left mold plate, a right mold plate, a back mold plate, four mold plates combined to form the mold 3, a runner core 4 arranged in the mold 3, and a casting cavity formed between the runner core 4 and the four mold plates.
A manufacturing process of a corrosion-resistant industrial slurry pump body is prepared by the following steps:
step one, preparing modified silicon carbide sand, namely adding a curing agent into resin, uniformly stirring, fully mixing silicon carbide micro powder, silicon carbide whiskers and an additive, and stirring and mixing the mixture with the mixture of the resin and the curing agent;
slowly adding the modified silicon carbide sand into the mixture of the resin, the curing agent, the silicon carbide sand micro powder and the silicon carbide whisker in the first step, and continuously stirring and mixing;
and step three, after uniformly mixing, starting a high-frequency vibration forming machine, injecting the mixture into a chemical slurry pump mold, heating and solidifying, and demolding to obtain a chemical slurry pump body, wherein a metal framework is preinstalled in the chemical slurry pump mold.
The modified silicon carbide sand is prepared by the following steps:
s1, cleaning the silicon carbide sand by adopting acetone, and then placing the cleaned silicon carbide sand in SiCl 4 In the solution, under the condition of pressurization, the silicon carbide sand and SiCl are reacted 4 The solution is fully mixed to ensure SiCl 4 The solution permeates into the silicon carbide sand pores;
s2, silicon carbide sand is processed from SiCl 4 Centrifugally separating the solution, feeding the silicon carbide sand into a combustion chamber containing steam, hydrogen and air for combustion, and burning the silicon carbide sand in the combustion chamber in a fluidized state at 1200-1500 ℃ to ensure SiCl in the pores of the silicon carbide sand 4 Hydrolysis to SiO 2 And HCl gas;
s3, will be filled with SiO 2 And (3) flushing the silicon carbide sand by adopting alkaline gas to remove residual HCl, thereby obtaining the modified silicon carbide sand.
The modified silicon carbide sand comprises: 30 parts of 16-20 meshes and 20 parts of 40-50 meshes; the silicon carbide micro powder comprises 15 parts of 300-400 meshes; 1 part of silicon carbide whisker; 20 parts of methyl phenyl silicone resin; 3 parts of a curing agent; 1 part of silane coupling agent (KH-550), 0.5 part of accelerator, 0.5 part of catalyst and 0.4 part of defoamer.
Example 2: a manufacturing process of a corrosion-resistant industrial slurry pump body is different from that of the embodiment 1 in that methyl silicone resin is adopted as resin, and the components and the content of raw materials are shown in the table 1.
Example 3: a manufacturing process of a corrosion-resistant industrial slurry pump body is different from that of the embodiment 1 in that epoxy modified organic silicon resin is adopted as resin, and the components and the contents of raw materials are shown in the table 1.
Comparative example 1: a manufacturing process of a corrosion-resistant chemical slurry pump body is different from that of the embodiment 1 in that the resin adopts methyl phenyl silicone resin, the silicon carbide sand is not modified, and the components and the contents of raw materials are shown in the table 1.
Comparative example 2: a manufacturing process of a corrosion-resistant industrial slurry pump body is different from that of the embodiment 1 in that methyl silicone resin is adopted as resin, and the components and the content of raw materials are shown in the table 1.
Comparative example 3: the manufacturing process of the corrosion-resistant industrial slurry pump body is different from that of the embodiment 1 in that epoxy resin is adopted as the resin, and the components and the content of raw materials are shown in the table 1.
TABLE 1 raw materials components and content
Experimental part:
preparing a sample mold, respectively taking the components and the contents of examples 1-3 and comparative examples 1-3, preparing a resin silicon carbide composite material sample according to a corrosion-resistant chemical slurry pump manufacturing process, wherein the sample IS a 10cm x 3cm resin silicon carbide sample block, measuring the bending strength and the tensile strength of the resin silicon carbide sample blocks prepared by the resin silicon carbide sand materials of examples 1-3 and comparative examples 1-3 by adopting an AG-IS-I-IC-EZGraph tester, testing the corrosion and abrasion performance of the resin silicon carbide sample block by adopting a corrosion and abrasion machine, adopting quartz sand as an abrasive, adopting a dilute sulfuric acid solution to adjust the pH value of the corrosion solution to be 3, testing the rotating speed to be 50r/min, loading to be 6N, and the average loss weight/abrasion and abrasion test time of the abrasion and abrasion rate = abrasion and abrasion test sample, wherein the test data are shown in the following table 2:
table 2 experimental results
| Project | Flexural Strength (Mpa) | Tensile Strength (Mpa) | Abrasion wear rate (g/min) |
| Example 1 | 56.3 | 25.6 | 0.018 |
| Example 2 | 49.5 | 28.4 | 0.014 |
| Example 3 | 52.7 | 26.1 | 0.015 |
| Comparative example 1 | 34.2 | 21.5 | 0.075 |
| Comparative example 2 | 41.5 | 22.8 | 0.018 |
| Comparative example 3 | 46.3 | 25.9 | 0.057 |
As can be seen from the experimental results in Table 2, the resin silicon carbide prepared from the modified silicon carbide sand and the silicon resin in examples 1-3 has higher bending strength and tensile strength, higher toughness and good wear resistance and corrosion resistance. The unmodified silicon carbide sand is adopted as the raw material in the comparative example 1, the bending strength and the tensile strength of the prepared resin silicon carbide composite material are reduced, the abrasion wear rate is greatly increased, and the combination strength of the unmodified silicon carbide sand and the resin is reduced, so that the corrosion resistance is greatly reduced. In the comparative example 2, no silicon carbide micropowder is added, the bending strength and the tensile strength of the prepared resin silicon carbide composite material are reduced, and the abrasion wear rate is not greatly influenced, so that the silicon carbide micropowder can enhance the strength of the resin silicon carbide composite material, and the proper silicon carbide grading has a great influence on the performance of the composite material. In comparative example 3, the epoxy resin is used to replace the silicon resin, the bending strength and the tensile strength of the prepared resin silicon carbide composite material are both reduced, the abrasion wear rate is increased, and the SiO is adopted 2 The combination property of the filling modified silicon carbide sand and the silicon resin is better.
Claims (7)
1. A corrosion resistant chemical industry sediment stuff pump body, its characterized in that: the novel ceramic composite ceramic pump comprises a pump shell (1), wherein the pump shell (1) is formed by pouring an organic-inorganic composite ceramic material, a metal framework (2) is embedded in the pump shell (1), a plurality of thread sleeves are further arranged on the pump shell (1), the thread sleeves are fixedly connected with the metal framework (2), the organic-inorganic composite ceramic material comprises modified silicon carbide sand, silicon carbide micro powder, silicon carbide whiskers, resin, a curing agent and an additive, and the modified silicon carbide sand is prepared by the following steps:
s1, cleaning the silicon carbide sand by adopting acetone, and then placing the cleaned silicon carbide sand in SiCl 4 In the solution, under the condition of pressurization, the silicon carbide sand and SiCl are reacted 4 The solution is fully mixed to ensure SiCl 4 The solution permeates into the silicon carbide sand pores;
s2, silicon carbide sand is processed from SiCl 4 Centrifugally separating the solution, feeding the silicon carbide sand into a combustion chamber containing steam, hydrogen and air for combustion to enable SiCl in the pores of the silicon carbide sand 4 Hydrolysis to SiO 2 And HCl gas;
s3, will be filled with SiO 2 And (3) flushing the silicon carbide sand by adopting alkaline gas to remove residual HCl, thereby obtaining the modified silicon carbide sand.
2. The corrosion-resistant industrial slurry pump body according to claim 1, wherein: the silicon carbide sand is combusted in a combustion chamber in a fluidized state, and the combustion temperature is 1200-1500 ℃.
3. The corrosion-resistant industrial slurry pump body according to claim 1, wherein: the modified silicon carbide sand comprises the following components in parts by mass: 30-50 parts of 16-20 meshes, 10-20 parts of 40-50 meshes; the silicon carbide micro powder comprises 15-20 parts of 300-400 meshes; 1-3 parts of silicon carbide whisker; 15-20 parts of resin; 3-5 parts of a curing agent; 1-3 parts of an additive.
4. The corrosion-resistant industrial slurry pump body according to claim 1, wherein: the resin is one of methyl phenyl silicone resin, methyl silicone resin and epoxy modified organic silicone resin.
5. The corrosion-resistant industrial slurry pump body according to claim 1, wherein: the additive comprises one or more of a silane coupling agent, an accelerator, a catalyst and an antifoaming agent.
6. The manufacturing process of the corrosion-resistant chemical slurry pump body according to any one of claims 1 to 5, wherein the manufacturing process is characterized by comprising the following steps: the preparation method comprises the following steps:
step one, preparing modified silicon carbide sand, namely adding a curing agent into resin, uniformly stirring, fully mixing silicon carbide micro powder, silicon carbide whiskers and an additive, and stirring and mixing the mixture with the mixture of the resin and the curing agent;
slowly adding the modified silicon carbide sand into the mixture of the resin, the curing agent, the silicon carbide sand micro powder and the silicon carbide whisker in the first step, and continuously stirring and mixing;
and step three, after uniformly mixing, starting a high-frequency vibration forming machine, injecting the mixture into a chemical slurry pump mould, heating and solidifying, and demoulding to obtain the chemical slurry pump body.
7. The manufacturing process of the corrosion-resistant industrial slurry pump body, as set forth in claim 6, is characterized in that: a metal framework (2) is preinstalled in the chemical slurry pump die.
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| CN1654828A (en) * | 2004-02-12 | 2005-08-17 | 韦尔-环境科技（私人）有限公司 | Rotary pump |
| CN105541189A (en) * | 2014-10-28 | 2016-05-04 | 姜峰 | High-temperature-resistant coating material |
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| CN113357155A (en) * | 2020-03-05 | 2021-09-07 | 常州凯润机械有限公司 | Box type composite silicon carbide ceramic pump and manufacturing method thereof |
| CN113404723A (en) * | 2021-07-30 | 2021-09-17 | 汉江弘源襄阳碳化硅特种陶瓷有限责任公司 | Multiphase reaction sintered silicon carbide ceramic pump and manufacturing method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6988870B2 (en) * | 2004-01-27 | 2006-01-24 | Weir Slurry Group, Inc. | Casing for a centrifugal pump |
| US20170009777A1 (en) * | 2015-07-10 | 2017-01-12 | MP Pumps | Fluid pump |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1654828A (en) * | 2004-02-12 | 2005-08-17 | 韦尔-环境科技（私人）有限公司 | Rotary pump |
| CN105541189A (en) * | 2014-10-28 | 2016-05-04 | 姜峰 | High-temperature-resistant coating material |
| CN111089081A (en) * | 2018-10-24 | 2020-05-01 | 汉江弘源襄阳碳化硅特种陶瓷有限责任公司 | Pump case for silicon carbide ceramic submerged slurry pump |
| CN113357155A (en) * | 2020-03-05 | 2021-09-07 | 常州凯润机械有限公司 | Box type composite silicon carbide ceramic pump and manufacturing method thereof |
| CN113404723A (en) * | 2021-07-30 | 2021-09-17 | 汉江弘源襄阳碳化硅特种陶瓷有限责任公司 | Multiphase reaction sintered silicon carbide ceramic pump and manufacturing method thereof |
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