阅读说明：本技术 一种轮式洗沙机 (Wheel type sand washing machine ) 是由 赵广林 于 2020-12-16 设计创作，主要内容包括：本发明涉及洗沙机转轴技术领域,具体涉及一种轮式洗沙机,包括驱动装置、洗沙池、转轮和转轴,转轮设有洗沙斗,洗沙池的底部设有水质检测器,洗沙斗内部设有过滤网,驱动装置设置于洗沙池的侧壁,转轮通过转轴架设于洗沙池内部驱动装置通过皮带与转轴连接。本发明的洗沙机能把沙石清洗的更干净,通过漏沙网可以过滤掉一些大颗粒的沙石和杂质,提高了沙石的纯度；而其中采用的转轴通过在无缝管的两端内设置焊接位将轴头焊接连接,另外,通过在无缝管的外表面涂覆一层耐磨涂料形成耐磨层可以很好的解决现有技术中存在的泥沙、泥水磨损/腐蚀转轴的问题,显著提升了洗沙机用转轴的洗沙高效和使用寿命,降低了高效成本。(The invention relates to the technical field of rotating shafts of sand washers, in particular to a wheel type sand washer which comprises a driving device, a sand washing pool, a rotating wheel and a rotating shaft, wherein the rotating wheel is provided with a sand washing hopper, the bottom of the sand washing pool is provided with a water quality detector, a filter screen is arranged in the sand washing hopper, the driving device is arranged on the side wall of the sand washing pool, and the rotating wheel is erected in the sand washing pool through the rotating shaft and is connected with the rotating shaft through a belt. The sand washer can clean sand and stones more cleanly, and can filter out large grains of sand and stones and impurities through the sand leakage net, so that the purity of the sand and stones is improved; and the pivot that wherein adopts sets up welding position through the both ends at seamless pipe with spindle nose welded connection, in addition, forms the problem that silt, muddy water wearing and tearing/corruption pivot that the solution that can be fine exists among the prior art through the surface coating one deck wear-resistant coating at seamless pipe, is showing the washing sand high efficiency and the life of having promoted pivot for the sand washer, has reduced high-efficient cost.)

1. A wheeled sand washer which characterized in that: the sand washing device comprises a driving device, a sand washing pool, a rotating wheel and a rotating shaft, wherein a water quality detector is arranged at the bottom of the sand washing pool, the rotating wheel is provided with a sand washing bucket, a filter screen is arranged in the sand washing bucket, the rotating shaft comprises a seamless pipe, a group of rotating shafts and a group of positioning nails, welding positions are arranged in the two ends of the seamless pipe, the rotating shafts are respectively arranged at the welding positions at the two ends of the seamless pipe, the welding positions are respectively provided with the positioning nails penetrating through the seamless pipe, the surface of the seamless pipe is provided with a wear-resistant layer, and the wear-resistant layer is prepared by coating a wear-; the driving device is arranged on the side wall of the sand washing pool, the rotating wheel is erected inside the sand washing pool through the rotating shaft, and the driving device is connected with the rotating shaft through a belt.

2. A wheeled sand washer according to claim 1, wherein: the wear-resistant coating comprises the following raw materials in parts by weight:

3. a wheeled sand washer according to claim 2, wherein: each part of the composite binder comprises the following raw materials in parts by weight:

4. a wheeled sand washer according to claim 3, wherein: the composite binder is prepared by the following steps:

s1, weighing the photosensitive resin and the polyvinyl alcohol ester according to the parts by weight, uniformly mixing, heating to 80-90 ℃, and stirring for 15-25min to obtain a mixture A for later use;

s2, weighing the acid anhydride curing agent and the photoinitiator, mixing and stirring uniformly, adding the mixture into the mixture A obtained in the step 1), heating to 80-100 ℃, continuously stirring for 30-60min, and cooling to room temperature to obtain the composite binder.

5. A wheeled sand washer according to claim 2, wherein: each part of the modified glass flake is prepared by the following steps: weighing 10-20 parts of glass flakes, 10-20 parts of vinyl triethoxysilane and 1-5 parts of ethanol according to parts by weight, and uniformly mixing and stirring to obtain a mixture A for later use; and then weighing 3-5 parts of glucose and 1-5 parts of polyaniline, and carrying out copolymerization and grafting to obtain the modified glass flake.

6. A wheeled sand washer according to claim 2, wherein: each part of the composite wear-resistant agent is at least two of chromium powder, silicon nitride, tungsten fluoride, silicon carbide and capacitance corundum.

7. A wheeled sand washer according to claim 2, wherein: each wear-resistant additive is DY-9238.

8. A wheeled sand washer according to claim 2, wherein: each part of the coupling agent is any one of aminopropyltriethoxysilane, aminopropyltrimethoxysilane and triglycidyl ether oxypropyltrimethoxysilane.

9. A wheeled sand washer according to claim 2, wherein: each part of the bonding agent is prepared by mixing A, B and C according to the weight ratio of 100:1-20: 10-20;

each part of the component A comprises the following components in parts by weight: 20-30 parts of phenolic resin and 10-20 parts of polyurethane; the component B is deionized water; each part of the C component comprises the following components in parts by weight: 1-5 parts of aminopropyltriethoxysilane, 0.1-1.0 part of polyoxypropylene ethylene oxide glycerol ether, 0.1-3.0 parts of polyamide wax and/or 0.1-3.0 parts of fumed silica.

10. A wheeled sand washer according to any one of claims 2-9, wherein: the wear-resistant coating is prepared by the following steps:

1) adding the nano silicon carbide powder, the steel slag, the composite wear-resistant agent and the binding agent into a dispersing device according to the parts by weight, and stirring at the speed of 400-600r/min for 20-40min to obtain a mixture A for later use;

2) uniformly mixing and stirring the modified glass flakes, the tungsten carbide cobalt powder, the aluminum tripolyphosphate, the coupling agent and the composite binder according to the parts by weight, and stirring at the speed of 800-;

3) extruding the mixture A obtained in the step 1) and the wear-resistant auxiliary agent into the mixture B obtained in the step 2), adjusting the stirring speed to be 500-700r/min, stirring for 20-40min, and then grinding and filtering by using a grinder to obtain the wear-resistant coating.

Technical Field

The invention relates to the technical field of rotating shafts of sand washers, in particular to a wheel type sand washer.

Background

The sand washer is widely used for washing materials in the industries of gravel fields, mines, building materials, traffic, chemical engineering, water conservancy and hydropower, concrete mixing stations and the like, can remove impurities covering the surface of gravel, and simultaneously destroys a water vapor layer covering sand grains, is beneficial to dehydration and plays a role in efficiently washing sand and cleaning.

A common spiral sand washer in a factory generally comprises a semi-silt separation bin, a rotating shaft and a spiral blade are arranged in the separation bin, the silt separation bin is obliquely arranged, a gap for silt to flow out is reserved between the spiral blade and the silt separation bin, a water spraying device is arranged at the higher position of the silt separation bin and sprays water to the surface of silt, water flows downwards, silt moves upwards through the reverse rotation of the spiral blade, mud or dust on the surface of the sand is washed by the water, the surface of the sand is clean, however, in the cleaning process, the water naturally flows at the bottom of the silt separation bin due to gravity, the sand cannot effectively roll along the reverse direction of the spiral blade in the upward process, partial silt slides to the rotating shaft and cannot be effectively cleaned and separated, meanwhile, the silt sliding to the rotating shaft can be abraded and corroded in the continuous stirring process, the normal operation and the service life of the rotating shaft are influenced, the cleaning effect is poor.

In addition, the sand washing device has poor positioning effect of the rotating shaft and poor sensitivity in practical application, and the rotating shaft is easy to loosen and shift due to the rotation of the bobbin and the helical blade, so that the sand washing device is not beneficial to high-efficiency sand washing and cleaning, and the sand washing cost is increased.

Disclosure of Invention

In order to overcome the defects and shortcomings in the prior art, the invention aims to provide a wheel type sand washer which can detect the dust content of water in a sand washing pool through a water quality monitor to control the water inlet speed, can clean sand and stones cleaner, can filter out large-particle sand and stones and impurities through a sand leakage net and improve the purity of the sand and stones; and the pivot that wherein adopts sets up welding position with spindle nose welded connection through the both ends at the seamless pipe of main part, adopts the location nail to fix a position the spindle nose for further promoting stability and location length, in addition, forms the problem of silt, muddy water wearing and tearing/corruption pivot that the wearing layer can be fine solution exist among the prior art through the surface coating one deck wear-resistant coating at seamless pipe, is showing the washing sand high efficiency and the life of having promoted pivot for the sand washer, has reduced high-efficient cost.

The purpose of the invention is realized by the following technical scheme: a wheel type sand washer comprises a driving device, a sand washing pool, a rotating wheel and a rotating shaft, wherein a water quality detector is arranged at the bottom of the sand washing pool, the rotating wheel is provided with a sand washing hopper, a filter screen is arranged inside the sand washing hopper, the rotating shaft comprises a seamless pipe, a group of rotating shafts and a group of positioning nails, welding positions are arranged in two ends of the seamless pipe respectively, the rotating shafts are respectively arranged at the welding positions at two ends of the seamless pipe, the welding positions are respectively provided with the positioning nails penetrating through the seamless pipe, the surface of the seamless pipe is provided with a wear-resistant layer, and the wear-resistant layer is made of wear-resistant materials through coating; the driving device is arranged on the side wall of the sand washing pool, the rotating wheel is erected in the sand washing pool through a rotating shaft, and the driving device is connected with the rotating shaft through a belt; preferably, the bottom of the sand washing pool is provided with a water outlet pipe and a water inlet pipe.

The sand washer controls the water inlet speed by detecting the dust content of water in the sand washing pool through the water quality monitor, can clean sand and stones more cleanly, can filter out large-particle sand and stones and impurities through the sand leakage net, and improves the purity of the sand and stones; and the pivot that wherein adopts sets up welding position with spindle nose welded connection through the both ends at the seamless pipe of main part, adopts the location nail to fix a position the spindle nose for further promoting stability and location length, in addition, forms the problem of silt, muddy water wearing and tearing/corruption pivot that the wearing layer can be fine solution exist among the prior art through the surface coating one deck wear-resistant coating at seamless pipe, is showing the washing sand high efficiency and the life of having promoted pivot for the sand washer, has reduced high-efficient cost.

Preferably, the wear-resistant coating comprises the following raw materials in parts by weight:

the grain size of the steel slag is 1.5-3.5 mm.

The nano silicon carbide, the modified glass flakes, the tungsten carbide cobalt powder and the aluminum tripolyphosphate adopted in the raw materials of the wear-resistant coating have better wear resistance and scratch resistance, so that the wear-resistant coating has good wear resistance and scratch resistance; the wear-resistant coating is prepared from steel slag, nano silicon carbide, modified glass flakes, tungsten carbide cobalt powder and aluminum tripolyphosphate as main raw materials and a composite binder, a binding agent and a coupling agent, so that wastes are changed into valuable substances, the problems of difficult steel slag treatment and high cost investment are fundamentally solved, the wear-resistant coating is a novel functional coating, the using amount is large, the market prospect is wide, and by popularization of the wear-resistant coating, the cost price of the wear-resistant coating is low, but the wear resistance of the wear-resistant coating is equivalent to or even superior to that of a ceramic wear-resistant coating and a silicon carbide wear-resistant coating, and the cost of the wear-resistant coating is less than that of the ceramic wear-resistant coating and the silicon carbide wear-resistant coating, so that.

Preferably, each part of the composite binder comprises the following raw materials in parts by weight:

preferably, each part of the photosensitive resin is a mixture of polyester acrylate, fluorine-containing epoxy acrylate and novolac epoxy resin according to the weight ratio of 0.4-0.8:0.6-1.0: 0.8-1.2; the acid anhydride curing agent is preferably CD2020 acid anhydride curing agent produced by Guangzhou emperor chemical Co.

Preferably, the composite binder is prepared by the following steps:

s1, weighing the photosensitive resin and the polyvinyl alcohol ester according to the parts by weight, uniformly mixing, heating to 80-90 ℃, and stirring for 15-25min to obtain a mixture A for later use;

s2, weighing the acid anhydride curing agent and the photoinitiator, mixing and stirring uniformly, adding the mixture into the mixture A obtained in the step 1), heating to 80-100 ℃, continuously stirring for 30-60min, and cooling to room temperature to obtain the composite binder.

The composite binder is prepared from the raw materials, has the characteristics of good cured film hardness, small curing shrinkage, strong adhesive force and good wear-resistant effect, and in addition, the adopted fluorine-containing epoxy resin has compact resin molecular structure due to rigid benzene rings and C-F bonds with strong interaction force, so that the hardness of the wear-resistant coating after film forming is improved, in addition, the C-F bonds have larger energy, and CF (CF) bonds have high strength₃The groups are easy to enrich on the surface of the resin, so that the surface tension, the friction factor and the refractive index of the fluorine-containing epoxy resin are low, and the wear-resistant coating has good wear resistance and corrosion resistance; the novolac epoxy resin has high epoxy content, high viscosity and high crosslinking density after curing, so that the coating has good physical and mechanical properties, and a coating film is firm and not easy to fall off after the coating is formed, thereby ensuring the corrosion resistance; meanwhile, the modified glass flakes are uniformly dispersed in the resin due to the compatibility of the modified glass flakes and the epoxy resin, so that the modified glass flakes are favorably distributed in a coating layer in a flaky overlapping manner, a protective barrier is formed on the surface of the base material, the time of a corrosive medium penetrating into the base material is greatly delayed, and the purpose of corrosion resistance is achieved; the prepared composite binder can be uniformly mixed with nano silicon carbide, modified glass flakes, tungsten carbide cobalt powder, steel slag and aluminum tripolyphosphate to be quickly cured on the surface of the seamless tube under the irradiation of the UV lamp group, so that the abrasion resistance and the corrosion resistance of the rotating shaft in the continuous stirring process are improved, the normal operation of the rotating shaft can be well ensured, the service life is prolonged, and the cleaning effect is improved; in addition, the anhydride curing agent can accelerate the curing molding of the wear-resistant coating on the surface of the rotating shaft, improve the dimensional stability, wear resistance, light stability and chemical corrosion resistance of the formed wear-resistant coating, and further contribute to improving the competitive capacity of the grinding tool in the market. The temperature of the heating in the step S1 is strictly controlled to be 80-100 ℃ in the process of preparing the composite binder, and if the temperature is too high, the photosensitive resin and the polypropylene alcohol ester are locally coked in the reaction processIf the temperature is too low, the combination of the two is not facilitated, and various performances of the finally prepared composite binder are further influenced.

Preferably, each part of the photoinitiator is a mixture consisting of diphenylethanone, 2,4, 6-trimethylbenzoylphosphine oxide and 1-chloro-4-propoxythioanthrone according to the weight ratio of 0.6-1.0: 0.4-0.8.

The photoinitiator adopted in the raw materials of the composite binder can ensure that the composite binder has good protection effect, and the photocuring speed of the composite binder is improved, so that the wear-resistant coating can form a wear-resistant layer on the surface of a rotating shaft, and the stability and the firmness of the wear-resistant layer are ensured.

Preferably, each part of the modified glass flakes is prepared by the following steps: weighing 10-20 parts of glass flakes, 10-20 parts of vinyl triethoxysilane and 1-5 parts of ethanol according to parts by weight, and uniformly mixing and stirring to obtain a mixture A for later use; and then weighing 3-5 parts of glucose and 1-5 parts of polyaniline, and carrying out copolymerization and grafting to obtain the modified glass flake.

In the use process of the modified glass flake, because a large number of gaps exist on the surface of the glass flake, the composite binder can be wetted and permeated into the glass flake, the interface combination between the modified glass flake and the composite binder is effectively improved, and simultaneously, tar in a carbon layer on the surface of the modified glass flake can further improve the interface combination between the modified glass flake and the composite binder, so that the modified glass flake is favorably distributed in a coating layer in a flaky overlapping manner, a protective barrier is formed on the surface of a rotating shaft, the time for a corrosive medium to permeate into a seamless pipe is greatly delayed, the purpose of corrosion resistance is achieved, and the wear resistance and the corrosion resistance of a system are improved.

Preferably, each part of the composite wear-resistant agent is at least two of chromium powder, silicon nitride, tungsten fluoride, silicon carbide and capacitance corundum; more preferably, each part of the composite wear-resistant agent is prepared by mixing chromium powder, silicon nitride, tungsten fluoride and capacitive corundum according to the weight ratio of 0.4-0.8:0.8-1.2:0.6-1.0: 0.5-0.9. Each wear-resistant additive is DY-9238.

The composite wear-resisting agent adopts the fused corundum and the chromium powder which have extremely high temperature resistance, oxidation resistance and wear resistance, and the composite binder and the bonding agent are used as the bonding agent of the wear-resisting substrate, so that the wear-resisting substrate can be bonded and stably attached to the surface of the seamless pipe, a compact friction layer can be formed on the surface of the seamless pipe, the wear is reduced, and the stability of the wear-resisting layer in a high-temperature state can be improved and the heat fading is reduced due to the heat resistance of the composite wear-resisting agent; meanwhile, the dosage ratio of the chromium powder, the silicon nitride, the tungsten fluoride and the capacitance corundum in the composite wear-resisting agent is strictly controlled to be 0.4-0.8:0.8-1.2:0.6-1.0:0.5-0.9, so that the wear-resisting coating obtained by adopting the formula of the composite wear-resisting agent has the highest wear resistance and the best wear resistance to the friction performance of the seamless tube friction material.

Preferably, each part of the coupling agent is any one of aminopropyltriethoxysilane, aminopropyltrimethoxysilane and triglycidyl ether oxypropyltrimethoxysilane; the addition of the coupling agent enables the nano silicon carbide, the modified glass flakes, the tungsten carbide cobalt powder, the aluminum tripolyphosphate and the composite wear-resistant agent to be more tightly combined with the composite binder and the bonding agent, so that the stability of the wear-resistant raw materials after the wear-resistant coating is coated into a film is ensured.

Preferably, each part of the bonding agent is prepared by mixing A, B and C according to the weight ratio of 100:1-20: 10-20;

each part of the component A comprises the following components in parts by weight: 20-30 parts of phenolic resin and 10-20 parts of polyurethane, wherein the polyurethane is Dow polyurethane YS-3000, and the solid content of the polyurethane is 20-40%; the component B is deionized water; each part of the C component comprises the following components in parts by weight: 1 to 5 parts of aminopropyltriethoxysilane, 0.1 to 1.0 part of polyoxypropylene ethylene oxide glycerol ether and 0.1 to 3.0 parts of polyamide wax and/or 0.1 to 3.0 parts of fumed silica. The polyurethane is preferably, but not limited to, dow polyurethane YS-3000.

According to the invention, A, B and C three components are adopted to form the mixed bonding agent, wherein 20-30 parts of phenolic resin can meet the requirements of the strength of adhering nano silicon carbide, modified glass flakes, tungsten carbide cobalt powder, aluminum tripolyphosphate and a composite wear-resistant agent, and can also ensure that the resin has high-performance heat resistance and impact resistance in the using process; the addition of the polyurethane can obviously improve the bonding performance of the aldehyde resin binder and improve the bonding stability of the wear-resistant coating; the component B adopts water as a solvent, so that the prepared phenolic resin binder can reduce the production cost of the grinding tool, is more environment-friendly and meets the requirement of green chemistry; and the addition of the silane coupling agent can enable the phenolic resin and the polyurethane to be combined more closely, and the bonding performance is improved.

Preferably, the wear-resistant coating is prepared by the following steps:

1) adding the nano silicon carbide powder, the steel slag, the composite wear-resistant agent and the binding agent into a dispersing device according to the parts by weight, and stirring at the speed of 400-600r/min for 20-40min to obtain a mixture A for later use;

2) uniformly mixing and stirring the modified glass flakes, the tungsten carbide cobalt powder, the aluminum tripolyphosphate, the coupling agent and the composite binder according to the parts by weight, and stirring at the speed of 800-;

3) extruding the mixture A obtained in the step 1) and the wear-resistant auxiliary agent into the mixture B obtained in the step 2), adjusting the stirring speed to be 500-700r/min, stirring for 20-40min, and then grinding and filtering by using a grinder to obtain the wear-resistant coating.

The wear-resistant coating is prepared by the method, and the wear-resistant coating prepared by the method has good wear resistance and scratch resistance; and the preparation method has the advantages of simple operation, convenient control, high production efficiency and low production cost. The stirring speed in the step 1) needs to be strictly controlled to be 400-600r/min in the preparation process, if the stirring speed is too high, the nano silicon carbide powder, the steel slag and the binding agent are dispersed unevenly due to different centrifugal forces, and if the stirring speed is too low, the mixing of the nano silicon carbide powder, the steel slag and the binding agent is also not facilitated; in addition, the stirring speed in the step 3) needs to be controlled to be 500-700r/min, and if the stirring speed is too high, the mixture A and the mixture B are not favorably mixed, so that the comprehensive performance of the finally prepared wear-resistant coating is influenced.

The invention has the beneficial effects that: the sand washer controls the water inlet speed by detecting the dust content of water in the sand washing pool through the water quality monitor, can clean sand and stones more cleanly, can filter out large-particle sand and stones and impurities through the sand leakage net, and improves the purity of the sand and stones; and the pivot that wherein adopts sets up welding position with spindle nose welded connection through the both ends at the seamless pipe of main part, adopts the location nail to fix a position the spindle nose for further promoting stability and location length, in addition, forms the problem of silt, muddy water wearing and tearing/corruption pivot that the wearing layer can be fine solution exist among the prior art through the surface coating one deck wear-resistant coating at seamless pipe, is showing the washing sand high efficiency and the life of having promoted pivot for the sand washer, has reduced high-efficient cost.

Drawings

FIG. 1 is a cross-sectional view of the present invention;

fig. 2 is a perspective view of the spindle of the present invention.

The reference signs are: 1-driving device, 2-sand washing pool, 21-water outlet pipe, 22-water inlet pipe, 3-rotating wheel, 31-sand washing bucket, 32-filter screen, 4-rotating shaft, 41-seamless pipe, 411-welding position, 42-shaft head, 43-positioning nail and 5-water quality detector.

Detailed Description

For the understanding of those skilled in the art, the present invention will be further described with reference to the following examples and accompanying fig. 1-2, which are not intended to limit the present invention.

Example 1

A wheel type sand washer comprises a driving device 1, a sand washing pool 2, a rotating wheel 3 and a rotating shaft 4, wherein a water quality detector 5 is arranged at the bottom of the sand washing pool 2, the rotating wheel 3 is provided with a sand washing bucket 31, a filter screen 32 is arranged inside the sand washing bucket 31, the rotating shaft 4 comprises a seamless pipe 41, a group of rotating shafts 4 and a group of positioning nails 43, welding positions 411 are arranged in two ends of the seamless pipe 41, the rotating shaft 4 is respectively provided with the welding positions 411 at two ends of the seamless pipe 41, the welding positions 411 are respectively provided with the positioning nails 43 penetrating through the seamless pipe 41, the surface of the seamless pipe 41 is provided with a wear-resistant layer, and the wear-resistant layer is prepared by coating wear-resistant materials; the driving device 1 is arranged on the side wall of the sand washing pool 2, the rotating wheel 3 is erected inside the sand washing pool 2 through a rotating shaft 4, and the driving device 1 is connected with the rotating shaft 4 through a belt; preferably, the bottom of the sand washing pool 2 is provided with a water outlet pipe 21 and a water inlet pipe 22.

The wear-resistant coating comprises the following raw materials in parts by weight:

the grain size of the steel slag is 1.5 mm; the nano silicon carbide powder is preferably produced by Shandong Jizhuo welding materials Co.

Each part of the composite binder comprises the following raw materials in parts by weight:

each part of the photosensitive resin is a mixture of polyester acrylate, fluorine-containing epoxy acrylate and novolac epoxy resin according to the weight ratio of 0.4:0.6: 0.8; the acid anhydride curing agent is preferably CD2020 acid anhydride curing agent produced by Guangzhou emperor chemical Co.

Each part of the photoinitiator is a mixture consisting of diphenylethanone, 2,4, 6-trimethylbenzoylphosphine oxide and 1-chloro-4-propoxythrothrone in a weight ratio of 0.6: 0.4.

Preferably, the composite binder is prepared by the following steps:

s1, weighing the photosensitive resin and the polyvinyl alcohol ester according to the parts by weight, uniformly mixing, heating to 80 ℃, and stirring for 15min to obtain a mixture A for later use;

s2, weighing CD2020 acid anhydride curing agent and photoinitiator, mixing and stirring uniformly, adding into the mixture A obtained in the step 1), heating to 80 ℃, continuously stirring for 30min, and cooling to room temperature to obtain the composite adhesive.

Each part of the modified glass flake is prepared by the following steps: weighing 10 parts of glass flakes, 10 parts of vinyltriethoxysilane and 1 part of ethanol according to the weight parts, and uniformly mixing and stirring to obtain a mixture A for later use; and then weighing 3 parts of glucose and 1 part of polyaniline, and carrying out copolymerization and grafting to obtain the modified glass flake.

Each part of the composite wear-resistant agent is prepared by mixing chromium powder, silicon nitride, tungsten fluoride and capacitance corundum according to the weight ratio of 0.4:0.8:0.6: 0.5. Each wear-resistant additive is DY-9238.

Each part of the coupling agent is aminopropyl triethoxysilane.

Each part of the bonding agent is prepared by mixing A, B and C according to the weight ratio of 100:1: 10;

each part of the component A comprises the following components in parts by weight: 20 parts of phenolic resin and 10 parts of polyurethane, wherein the polyurethane is Dow polyurethane YS-3000, and the solid content of the polyurethane is 20%; the component B is deionized water; each part of the C component comprises the following components in parts by weight: 1 part of aminopropyltriethoxysilane, 0.1 part of polyoxypropylene oxyethylene glyceryl ether and 0.1 part of polyamide wax.

The wear-resistant coating is prepared by the following steps:

1) adding the nano silicon carbide powder, the steel slag, the composite wear-resisting agent and the binding agent into a dispersing device according to the parts by weight, and stirring at the speed of 400r/min for 20min to obtain a mixture A for later use;

2) uniformly mixing and stirring the modified glass flakes, the tungsten carbide cobalt powder, the aluminum tripolyphosphate, the coupling agent and the composite binder according to the parts by weight, and stirring at the speed of 800r/min for 30min to obtain a mixture B for later use;

3) extruding the mixture A obtained in the step 1) and the wear-resistant auxiliary agent into the mixture B obtained in the step 2), adjusting the stirring speed to be 500r/min, stirring for 20min, and then grinding and filtering by using a grinder to obtain the wear-resistant coating.

Example 2

A wheel type sand washer comprises a driving device 1, a sand washing pool 2, a rotating wheel 3 and a rotating shaft 4, wherein a water quality detector 5 is arranged at the bottom of the sand washing pool 2, the rotating wheel 3 is provided with a sand washing bucket 31, a filter screen 32 is arranged inside the sand washing bucket 31, the rotating shaft 4 comprises a seamless pipe 41, a group of rotating shafts 4 and a group of positioning nails 43, welding positions 411 are arranged in two ends of the seamless pipe 41, the rotating shaft 4 is respectively provided with the welding positions 411 at two ends of the seamless pipe 41, the welding positions 411 are respectively provided with the positioning nails 43 penetrating through the seamless pipe 41, the surface of the seamless pipe 41 is provided with a wear-resistant layer, and the wear-resistant layer is prepared by coating wear-resistant materials; the driving device 1 is arranged on the side wall of the sand washing pool 2, the rotating wheel 3 is erected inside the sand washing pool 2 through a rotating shaft 4, and the driving device 1 is connected with the rotating shaft 4 through a belt; preferably, the bottom of the sand washing pool 2 is provided with a water outlet pipe 21 and a water inlet pipe 22.

The wear-resistant coating comprises the following raw materials in parts by weight:

the grain size of the steel slag is 2.0 mm; the nano silicon carbide powder is preferably produced by Shandong Jizhuo welding materials Co.

Each part of the composite binder comprises the following raw materials in parts by weight:

each part of the photosensitive resin is a mixture of polyester acrylate, fluorine-containing epoxy acrylate and novolac epoxy resin according to the weight ratio of 0.5:0.7: 0.9; the acid anhydride curing agent is preferably CD2020 acid anhydride curing agent produced by Guangzhou emperor chemical Co.

Each part of the photoinitiator is a mixture consisting of diphenylethanone, 2,4, 6-trimethylbenzoylphosphine oxide and 1-chloro-4-propoxythrothrone in a weight ratio of 0.7: 0.5.

Preferably, the composite binder is prepared by the following steps:

s1, weighing the photosensitive resin and the polyvinyl alcohol ester according to the parts by weight, uniformly mixing, heating to 83 ℃, and stirring for 18min to obtain a mixture A for later use;

s2, weighing CD2020 acid anhydride curing agent and photoinitiator, mixing and stirring uniformly, adding into the mixture A obtained in the step 1), heating to 85 ℃, continuously stirring for 38min, and cooling to room temperature to obtain the composite adhesive.

Each part of the modified glass flake is prepared by the following steps: weighing 13 parts of glass flakes, 13 parts of vinyltriethoxysilane and 2 parts of ethanol according to the weight parts, and uniformly mixing and stirring to obtain a mixture A for later use; then 3.5 parts of glucose and 2 parts of polyaniline are weighed, and copolymerization and grafting are carried out to obtain the modified glass flake.

Each part of the composite wear-resistant agent is prepared by mixing chromium powder, silicon nitride, tungsten fluoride and capacitance corundum according to the weight ratio of 0.5:0.9:0.7: 0.6. Each wear-resistant additive is DY-9238.

Each part of the coupling agent is aminopropyl triethoxysilane.

Each part of the bonding agent is prepared by mixing A, B and C according to the weight ratio of 100:5: 13;

each part of the component A comprises the following components in parts by weight: 23 parts of phenolic resin and 12 parts of polyurethane, wherein the polyurethane is Dow polyurethane YS-3000, and the solid content of the polyurethane is 25%; the component B is deionized water; each part of the C component comprises the following components in parts by weight: 2 parts of aminopropyltriethoxysilane, 0.3 part of polyoxypropylene oxyethylene glyceryl ether and 0.8 part of fumed silica.

The wear-resistant coating is prepared by the following steps:

1) adding the nano silicon carbide powder, the steel slag, the composite wear-resisting agent and the binding agent into a dispersing device according to the parts by weight, and stirring at the speed of 450r/min for 25min to obtain a mixture A for later use;

2) uniformly mixing and stirring the modified glass flakes, the tungsten carbide cobalt powder, the aluminum tripolyphosphate, the coupling agent and the composite binder according to the parts by weight, and stirring at the speed of 9800r/min for 38min to obtain a mixture B for later use;

3) extruding the mixture A obtained in the step 1) and the wear-resistant auxiliary agent into the mixture B obtained in the step 2), adjusting the stirring speed to 550r/min, stirring for 25min, and then grinding and filtering by using a grinder to obtain the wear-resistant coating.

Example 3

A wheel type sand washer comprises a driving device 1, a sand washing pool 2, a rotating wheel 3 and a rotating shaft 4, wherein a water quality detector 5 is arranged at the bottom of the sand washing pool 2, the rotating wheel 3 is provided with a sand washing bucket 31, a filter screen 32 is arranged inside the sand washing bucket 31, the rotating shaft 4 comprises a seamless pipe 41, a group of rotating shafts 4 and a group of positioning nails 43, welding positions 411 are arranged in two ends of the seamless pipe 41, the rotating shaft 4 is respectively provided with the welding positions 411 at two ends of the seamless pipe 41, the welding positions 411 are respectively provided with the positioning nails 43 penetrating through the seamless pipe 41, the surface of the seamless pipe 41 is provided with a wear-resistant layer, and the wear-resistant layer is prepared by coating wear-resistant materials; the driving device 1 is arranged on the side wall of the sand washing pool 2, the rotating wheel 3 is erected inside the sand washing pool 2 through a rotating shaft 4, and the driving device 1 is connected with the rotating shaft 4 through a belt; preferably, the bottom of the sand washing pool 2 is provided with a water outlet pipe 21 and a water inlet pipe 22.

The wear-resistant coating comprises the following raw materials in parts by weight:

the grain size of the steel slag is 2.5 mm; the nano silicon carbide powder is preferably produced by Shandong Jizhuo welding materials Co.

Each part of the composite binder comprises the following raw materials in parts by weight:

each part of the photosensitive resin is a mixture of polyester acrylate, fluorine-containing epoxy acrylate and novolac epoxy resin according to the weight ratio of 0.6:0.8: 1.0; the acid anhydride curing agent is preferably CD2020 acid anhydride curing agent produced by Guangzhou emperor chemical Co.

Each part of the photoinitiator is a mixture consisting of diphenylethanone, 2,4, 6-trimethylbenzoylphosphine oxide and 1-chloro-4-propoxythrothrone in a weight ratio of 0.8: 0.6.

Preferably, the composite binder is prepared by the following steps:

s1, weighing the photosensitive resin and the polyvinyl alcohol ester according to the parts by weight, uniformly mixing, heating to 85 ℃, and stirring for 20min to obtain a mixture A for later use;

s2, weighing CD2020 acid anhydride curing agent and photoinitiator, mixing and stirring uniformly, adding into the mixture A obtained in the step 1), heating to 90 ℃, continuously stirring for 45min, and cooling to room temperature to obtain the composite adhesive.

Each part of the modified glass flake is prepared by the following steps: weighing 15 parts of glass flakes, 15 parts of vinyltriethoxysilane and 3 parts of ethanol according to the weight parts, and uniformly mixing and stirring to obtain a mixture A for later use; and then weighing 4 parts of glucose and 3 parts of polyaniline, and carrying out copolymerization and grafting to obtain the modified glass flake.

Each part of the composite wear-resistant agent is prepared by mixing chromium powder, silicon nitride, tungsten fluoride and capacitance corundum according to the weight ratio of 0.6:1.0:0.8: 0.7. Each wear-resistant additive is DY-9238.

Each part of the coupling agent is triglycidyl ether oxypropyl trimethoxy silane.

Each part of the bonding agent is prepared by mixing A, B and C according to the weight ratio of 100:10: 15;

each part of the component A comprises the following components in parts by weight: 25 parts of phenolic resin and 15 parts of polyurethane, wherein the polyurethane is Dow polyurethane YS-3000, and the solid content of the polyurethane is 30%; the component B is deionized water; each part of the C component comprises the following components in parts by weight: 3 parts of aminopropyltriethoxysilane, 0.5 part of polyoxypropylene oxyethylene glyceryl ether and 1.5 parts of polyamide wax.

The wear-resistant coating is prepared by the following steps:

1) adding the nano silicon carbide powder, the steel slag, the composite wear-resisting agent and the binding agent into a dispersing device according to the parts by weight, and stirring at the speed of 500r/min for 30min to obtain a mixture A for later use;

2) uniformly mixing and stirring the modified glass flakes, the tungsten carbide cobalt powder, the aluminum tripolyphosphate, the coupling agent and the composite binder according to the parts by weight, and stirring at the speed of 1000r/min for 45min to obtain a mixture B for later use;

3) extruding the mixture A obtained in the step 1) and the wear-resistant auxiliary agent into the mixture B obtained in the step 2), adjusting the stirring speed to 600r/min, stirring for 30min, and then grinding and filtering by using a grinder to obtain the wear-resistant coating.

Example 4

A wheel type sand washer comprises a driving device 1, a sand washing pool 2, a rotating wheel 3 and a rotating shaft 4, wherein a water quality detector 5 is arranged at the bottom of the sand washing pool 2, the rotating wheel 3 is provided with a sand washing bucket 31, a filter screen 32 is arranged inside the sand washing bucket 31, the rotating shaft 4 comprises a seamless pipe 41, a group of rotating shafts 4 and a group of positioning nails 43, welding positions 411 are arranged in two ends of the seamless pipe 41, the rotating shaft 4 is respectively provided with the welding positions 411 at two ends of the seamless pipe 41, the welding positions 411 are respectively provided with the positioning nails 43 penetrating through the seamless pipe 41, the surface of the seamless pipe 41 is provided with a wear-resistant layer, and the wear-resistant layer is prepared by coating wear-resistant materials; the driving device 1 is arranged on the side wall of the sand washing pool 2, the rotating wheel 3 is erected inside the sand washing pool 2 through a rotating shaft 4, and the driving device 1 is connected with the rotating shaft 4 through a belt; preferably, the bottom of the sand washing pool 2 is provided with a water outlet pipe 21 and a water inlet pipe 22.

The wear-resistant coating comprises the following raw materials in parts by weight:

the grain size of the steel slag is 3.0 mm; the nano silicon carbide powder is preferably produced by Shandong Jizhuo welding materials Co.

Each part of the composite binder comprises the following raw materials in parts by weight:

each part of the photosensitive resin is a mixture of polyester acrylate, fluorine-containing epoxy acrylate and novolac epoxy resin according to the weight ratio of 0.7:0.9: 1.1; the acid anhydride curing agent is preferably CD2020 acid anhydride curing agent produced by Guangzhou emperor chemical Co.

Each part of the photoinitiator is a mixture consisting of diphenylethanone, 2,4, 6-trimethylbenzoylphosphine oxide and 1-chloro-4-propoxythrothrone in a weight ratio of 0.9: 0.7.

Preferably, the composite binder is prepared by the following steps:

s1, weighing the photosensitive resin and the polyvinyl alcohol ester according to the parts by weight, uniformly mixing, heating to 88 ℃, and stirring for 23min to obtain a mixture A for later use;

s2, weighing CD2020 acid anhydride curing agent and photoinitiator, mixing and stirring uniformly, adding into the mixture A obtained in the step 1), heating to 95 ℃, continuously stirring for 52min, and cooling to room temperature to obtain the composite adhesive.

Each part of the modified glass flake is prepared by the following steps: weighing 18 parts of glass flakes, 18 parts of vinyltriethoxysilane and 4 parts of ethanol according to the weight parts, and uniformly mixing and stirring to obtain a mixture A for later use; and then weighing 4.5 parts of glucose and 4 parts of polyaniline, and carrying out copolymerization and grafting to obtain the modified glass flake.

Each part of the composite wear-resistant agent is prepared by mixing chromium powder, silicon nitride, tungsten fluoride and capacitance corundum according to the weight ratio of 0.7:1.1:0.9: 0.8. Each wear-resistant additive is DY-9238.

Each part of the coupling agent is aminopropyl trimethoxy silane.

Each part of the bonding agent is prepared by mixing A, B and C according to the weight ratio of 100:15: 18;

each part of the component A comprises the following components in parts by weight: 28 parts of phenolic resin and 18 parts of polyurethane, wherein the polyurethane is Dow polyurethane YS-3000, and the solid content of the polyurethane is 35%; the component B is deionized water; each part of the C component comprises the following components in parts by weight: 4 parts of aminopropyltriethoxysilane, 0.8 part of polyoxypropylene oxyethylene glyceryl ether and 2.3 parts of fumed silica.

The wear-resistant coating is prepared by the following steps:

1) adding the nano silicon carbide powder, the steel slag, the composite wear-resisting agent and the binding agent into a dispersing device according to the parts by weight, and stirring at the speed of 550r/min for 35min to obtain a mixture A for later use;

2) uniformly mixing and stirring the modified glass flakes, the tungsten carbide cobalt powder, the aluminum tripolyphosphate, the coupling agent and the composite binder according to the parts by weight, and stirring at the speed of 1100r/min for 52min to obtain a mixture B for later use;

3) extruding the mixture A obtained in the step 1) and the wear-resistant auxiliary agent into the mixture B obtained in the step 2), adjusting the stirring speed to be 650r/min, stirring for 35min, and then grinding and filtering by using a grinder to obtain the wear-resistant coating.

Example 5

A wheel type sand washer comprises a driving device 1, a sand washing pool 2, a rotating wheel 3 and a rotating shaft 4, wherein a water quality detector 5 is arranged at the bottom of the sand washing pool 2, the rotating wheel 3 is provided with a sand washing bucket 31, a filter screen 32 is arranged inside the sand washing bucket 31, the rotating shaft 4 comprises a seamless pipe 41, a group of rotating shafts 4 and a group of positioning nails 43, welding positions 411 are arranged in two ends of the seamless pipe 41, the rotating shaft 4 is respectively provided with the welding positions 411 at two ends of the seamless pipe 41, the welding positions 411 are respectively provided with the positioning nails 43 penetrating through the seamless pipe 41, the surface of the seamless pipe 41 is provided with a wear-resistant layer, and the wear-resistant layer is prepared by coating wear-resistant materials; the driving device 1 is arranged on the side wall of the sand washing pool 2, the rotating wheel 3 is erected inside the sand washing pool 2 through a rotating shaft 4, and the driving device 1 is connected with the rotating shaft 4 through a belt; preferably, the bottom of the sand washing pool 2 is provided with a water outlet pipe 21 and a water inlet pipe 22.

The wear-resistant coating comprises the following raw materials in parts by weight:

the grain size of the steel slag is 3.5 mm; the nano silicon carbide powder is preferably produced by Shandong Jizhuo welding materials Co.

Each part of the composite binder comprises the following raw materials in parts by weight:

each part of the photosensitive resin is a mixture of polyester acrylate, fluorine-containing epoxy acrylate and novolac epoxy resin according to the weight ratio of 0.8:1.0: 1.2; the acid anhydride curing agent is preferably CD2020 acid anhydride curing agent produced by Guangzhou emperor chemical Co.

Each part of the photoinitiator is a mixture consisting of diphenylethanone, 2,4, 6-trimethylbenzoylphosphine oxide and 1-chloro-4-propoxythrothrone in a weight ratio of 1.0: 0.8.

Preferably, the composite binder is prepared by the following steps:

s1, weighing the photosensitive resin and the polyvinyl alcohol ester according to the parts by weight, uniformly mixing, heating to 90 ℃, and stirring for 25min to obtain a mixture A for later use;

s2, weighing CD2020 acid anhydride curing agent and photoinitiator, mixing and stirring uniformly, adding into the mixture A obtained in the step 1), heating to 100 ℃, continuously stirring for 60min, and cooling to room temperature to obtain the composite adhesive.

Each part of the modified glass flake is prepared by the following steps: weighing 20 parts of glass flakes, 20 parts of vinyltriethoxysilane and 5 parts of ethanol according to the weight parts, and uniformly mixing and stirring to obtain a mixture A for later use; and then weighing 5 parts of glucose and 5 parts of polyaniline, and carrying out copolymerization and grafting to obtain the modified glass flake.

Each part of the composite wear-resistant agent is prepared by mixing chromium powder, silicon nitride, tungsten fluoride and capacitance corundum according to the weight ratio of 0.8:1.2:1.0: 0.9. Each wear-resistant additive is DY-9238.

Each part of the coupling agent is aminopropyl triethoxysilane.

Each part of the bonding agent is prepared by mixing A, B and C according to the weight ratio of 100:20: 20;

each part of the component A comprises the following components in parts by weight: 30 parts of phenolic resin and 20 parts of polyurethane, wherein the polyurethane is Dow polyurethane YS-3000, and the solid content of the polyurethane is 40%; the component B is deionized water; each part of the C component comprises the following components in parts by weight: 5 parts of aminopropyltriethoxysilane, 1.0 part of polyoxypropylene oxyethylene glyceryl ether and 3.0 parts of polyamide wax.

The wear-resistant coating is prepared by the following steps:

1) adding the nano silicon carbide powder, the steel slag, the composite wear-resisting agent and the binding agent into a dispersing device according to the parts by weight, and stirring at the speed of 600r/min for 40min to obtain a mixture A for later use;

2) uniformly mixing and stirring the modified glass flakes, the tungsten carbide cobalt powder, the aluminum tripolyphosphate, the coupling agent and the composite binder according to the parts by weight, and stirring at the speed of 1200r/min for 60min to obtain a mixture B for later use;

3) extruding the mixture A obtained in the step 1) and the wear-resistant auxiliary agent into the mixture B obtained in the step 2), adjusting the stirring speed to 700r/min, stirring for 40min, and then grinding and filtering by using a grinder to obtain the wear-resistant coating.

Comparative example 1

This comparative example differs from example 1 above in that: the positioning nail 3 is not provided in this comparative example. The remainder of this comparative example is the same as example 1 and will not be described again here.

Comparative example 2

This comparative example differs from example 3 above in that: in the raw materials of the wear-resistant coating in the comparative example, the composite binder is replaced by E-30CL produced by Hangaotai, and the rest raw materials are mixed according to the proportion of the example 3. The remainder of this comparative example is the same as example 3 and will not be described again here.

Comparative example 3

This comparative example differs from example 5 above in that: in the raw materials of the wear-resistant coating in the comparative example, the modified glass flakes are replaced by the glass flakes, and the rest raw materials are mixed according to the proportion of the example 3. The remainder of this comparative example is the same as example 5 and will not be described again here.

The rotating shafts for sand washers obtained in examples 1, 3 and 5 and comparative examples 1 to 3 were subjected to a performance test, while the abrasion resistant coatings obtained in examples 1, 3 and 5 and comparative examples 1 to 3 were prepared into test pieces of 20cm × 5cm × 5cm by vibration molding and then dried at 100 ℃ for 24 hours to perform the following performance tests, the results of which are shown in Table 1

Hardness was measured according to GB/T5766-2007; testing the flexural strength and the compressive strength according to GB/T3001-2000; testing impact toughness by adopting a simply supported beam type pendulum impact testing machine; according to the regulation of GB5763-2008, the friction force of the test piece at 100 ℃, 200 ℃ and 300 ℃ is measured under the conditions of 0.98MPa and 500r/min respectively;

the wear rate test method comprises the following steps: the abrasion resistant coatings prepared by examples 1, 3, 5 and comparative examples 1 to 3 were each brush coated onto a test piece of A3 steel having dimensions of 70mm by 50mm by 0.75mm and a coating thickness of 150 μm. In order to simulate the environment of erosion abrasion state, a small-size ball milling tank of a light ball mill is filled with water and river sand with various particle sizes (0.5-15mm), the mass ratio of the river sand to the water is 1:3, and the rotating speed is 600 r/min. The mass of the sample after abrasion per hour was measured on an electronic balance, and the abrasion rate was calculated by the formula, and the test results are shown in table 1:

the wear rate (lost weight/original weight) x 100%

TABLE 1

From the test results in table 1, it can be seen that the rotating shafts in examples 1, 3 and 5 of the present invention have good stability, and the wear-resistant layer coated on the rotating shaft has excellent properties, such as wear resistance, corrosion resistance, hardness, breaking strength, compressive strength and impact toughness, and is suitable for mass production.

Compared with the embodiment 1, the rotating shaft in the comparative example 1 is not provided with the positioning nail 43, and the stability of the rotating shaft in the operation process is relatively reduced by analyzing the physical property tests of the rotating shaft; the positioning nail 43 arranged on the rotating shaft can effectively improve the stability and the accurate positioning effect of the rotating shaft in the operation process, and is suitable for large-scale production.

Compared with the example 3, in the comparative example 2, the composite binder is replaced by the E-30CL produced by the Han Gaoletai in the raw materials for preparing the wear-resistant coating, and various physical property tests are carried out on the wear-resistant layer coated by the wear-resistant coating; the invention shows that the special composite binder is adopted when the wear-resistant coating used for preparing the wear-resistant layer can effectively improve various performances of the wear-resistant coating after coating and film forming, so that the prepared rotating shaft has excellent wear resistance, corrosion resistance, hardness, breaking strength, compressive strength and impact toughness, and is suitable for large-scale production.

Compared with the example 5, in the comparative example 3, the modified glass scale is replaced by the glass scale in the raw materials for preparing the wear-resistant coating, and various physical property tests are carried out on the wear-resistant layer coated by the wear-resistant coating, and analysis shows that the wear resistance, the corrosion resistance, the hardness, the breaking strength, the compressive strength and the impact toughness of the wear-resistant coating are reduced after the wear-resistant coating is coated into a film, particularly the wear resistance and the hardness; the invention shows that the special modified glass scale is adopted when the wear-resistant coating used for preparing the wear-resistant layer can effectively improve various performances of the wear-resistant coating after coating and film forming, so that the prepared rotating shaft has excellent wear resistance, corrosion resistance, hardness, breaking strength, compressive strength and impact toughness, and is suitable for large-scale production.

The above-described embodiments are preferred implementations of the present invention, and the present invention may be implemented in other ways without departing from the spirit of the present invention.