阅读说明：本技术 一种高寿命的高压柱塞泵及其生产工艺 (Long-life high-pressure plunger pump and production process thereof ) 是由 田丰华 于 2020-12-29 设计创作，主要内容包括：本申请涉及一种高寿命的高压柱塞泵及其生产工艺,涉及柱塞泵的领域,为了解决柱塞泵在使用中,由于使用环境的多样性,柱塞泵在恶劣环境使用过程中外壳容易受到侵蚀,导降低柱塞泵的使用受到影响的问题,其包括壳体,壳体的外侧壁上设置有耐侵蚀层,耐侵蚀层背离壳体的一面设置有环氧树脂涂层。本申请具有适合多种恶劣的使用环境的高压柱塞泵的效果,提高了高压柱塞泵的使用寿命。(The utility model relates to a high pressure plunger pump and production technology thereof of high life, relate to the field of plunger pump, in order to solve plunger pump in use, because service environment's variety, the plunger pump casing easily receives the erosion in adverse circumstances use, leads the problem that the use that reduces the plunger pump received the influence, and it includes the casing, is provided with on the lateral wall of casing and resists the erosion layer, and the one side that resists the erosion layer and deviates from the casing is provided with the epoxy coating. This application has the effect of the high pressure plunger pump that is fit for multiple abominable service environment, has improved the life of high pressure plunger pump.)

1. A high-pressure plunger pump of high life, comprising a housing (1), characterized in that: be provided with on the lateral wall of casing (1) and be provided with on resistant erosion layer (2), the one side that resistant erosion layer (2) deviate from casing (1) is provided with epoxy coating (3).

2. A high pressure piston pump of high life according to claim 1, characterized in that: the erosion resistant layer (2) is a ceramic particle coating.

3. Process for producing a high-pressure plunger pump with a long service life according to claims 1-2, characterised by the following steps:

s1, manufacturing a blank: mixing and melting pig iron and scrap steel into molten steel; pouring molten steel into a casting mold of each part, opening the mold after solidification, taking out a casting, and cooling to obtain a blank of each part of the shell (1);

s2, blank processing: carrying out heat treatment on the blank and machining to obtain a semi-finished product of each part of the shell (1); deburring of semi-finished products of all parts of the shell (1);

s3, coating a pond: spraying a ceramic particle coating on the surface of the semi-finished product, performing high-temperature curing treatment on the ceramic particle coating, and spraying an epoxy resin coating (3) on the surface of the ceramic particle coating;

s4, finished product installation: and cleaning, drying and finally assembling finished products of all parts of the shell (1).

4. A process for producing a long-life high-pressure plunger pump according to claim 3, characterized in that: in step S2, after the blank is heat-treated, a blast treatment is performed.

5. A process for producing a long-life high-pressure plunger pump according to claim 4, characterized in that: in the step S2, the sand blasting treatment is divided into coarse sand blasting and fine sand blasting, wherein the grain diameter of the abrasive of the coarse sand blasting is 5-10 mm, and the grain diameter of the abrasive of the fine sand blasting is 1-3 mm.

6. A process for producing a long-life high-pressure plunger pump according to claim 4, characterized in that: in step S2, the compressed air in the blasting process is cooled when in use.

7. A process for producing a long-life high-pressure plunger pump according to claim 3, characterized in that: in step S3, after the ceramic particle coating is sprayed, the semi-finished product is subjected to a heating process.

8. A process for producing a long-life high-pressure plunger pump according to claim 3, characterized in that: in the step S3, when the ceramic particle coating is sprayed, the thickness of the coating is 5-8 mm.

9. A process for producing a long-life high-pressure plunger pump according to claim 3, characterized in that: in the step S3, in the high-temperature curing treatment, the surface of the coating is dried for 20min at room temperature, the heating treatment temperature is controlled to be 40-50 ℃, the time is controlled to be 10min, and the coating is completely cured for 10-15 days at room temperature.

Technical Field

The application relates to the field of plunger pumps, in particular to a high-pressure plunger pump with long service life and a production process thereof.

Background

The use pressure of the high-pressure plunger pump is generally between 10MPa and 100 MPa. It belongs to a positive displacement pump.

The related patent with publication number CN104234959A provides an oblique axis type plunger pump device, which comprises a main shaft, a bearing, a connecting rod plunger pair, a cylinder body, a shell, a valve plate and a rear cover, wherein one end of the rotating shaft is connected with the inner wall of one end of the shell through the bearing, the shell is in a bent shape, one end of the rotating shaft in the shell is connected with the connecting rod plunger pair, the connecting rod plunger pair is connected with the cylinder body, the cylinder body is connected with the valve plate, the other end of the shell is provided with the rear cover, and the connecting rod plunger pair, the cylinder body and the valve plate are sealed in the shell through the rear cover. In the oblique axis type plunger pump device, the lateral force of the plunger is smaller than that of the plunger of the straight axis type pump, so that the friction loss caused by the lateral force is small; the connecting rod ball head and the main shaft are firmly connected, and the self-energy absorption is strong.

In view of the above-mentioned related technologies, the inventor believes that in use of the plunger pump, due to the diversity of the use environments, the housing of the plunger pump is easily corroded during the use in a severe environment, which affects the reduction of the use of the plunger pump.

Disclosure of Invention

In order to make the high-pressure plunger pump be suitable for multiple abominable service environment, the application provides a high-pressure plunger pump of high life and production technology thereof.

In a first aspect, the present application provides a high-pressure plunger pump with a long service life, which adopts the following technical scheme:

the utility model provides a high pressure plunger pump of long-life, includes the casing, be provided with the erosion-resistant layer on the lateral wall of casing, the one side that the erosion-resistant layer deviates from the casing is provided with the epoxy coating.

Through adopting above-mentioned technical scheme, the metal material of erosion resistant layer to the casing of high pressure plunger pump protects, makes high pressure plunger pump be fit for multiple abominable service environment to improve the life of casing under abominable environment.

Preferably, the erosion resistant layer is a ceramic particle coating.

By adopting the technical scheme, the ceramic particle coating has excellent erosion-resistant layer, corrosion resistance and wear resistance, and meanwhile, the ceramic particle coating has high adhesive force to the metal surface and can be quickly cured, so that the erosion-resistant layer is more tightly connected with the shell.

In a second aspect, the present application provides a production process of a high-pressure plunger pump with a long service life, which adopts the following technical scheme:

a production process of a high-pressure plunger pump with long service life comprises the following steps:

s1, manufacturing a blank: mixing and melting pig iron and scrap steel into molten steel; pouring molten steel into a casting mold of each part, opening the mold after solidification, taking out a casting, and cooling to obtain a blank of each part of the shell;

s2, blank processing: carrying out heat treatment on the blank and machining to obtain a semi-finished product of each part of the shell; deburring the semi-finished products of all parts of the shell;

s3, coating a pond: spraying a ceramic particle coating on the surface of the semi-finished product, performing high-temperature curing treatment on the ceramic particle coating, and spraying an epoxy resin coating on the surface of the ceramic particle coating;

s4, finished product installation: and cleaning and drying finished products of all parts of the shell, and finally assembling.

By adopting the technical scheme, the semi-finished product is subjected to high-temperature curing treatment after the ceramic particle coating is sprayed on the surface of the semi-finished product, and the ceramic particle coating can be more stably connected with the metal shell through the high-temperature curing treatment; meanwhile, the pig iron and the scrap steel are mixed for use, so that the old resources are utilized, and the overall resource utilization rate is improved.

Optionally, in step S2, after the blank is heat-treated, a sand blasting treatment is performed.

Through adopting above-mentioned technical scheme, when carrying out sandblast technology and handling, some filths such as attachment, welding slag, grease to the metal surface are cleared up, improve later stage casing physical properties.

Optionally, in the step S2, the blasting treatment includes coarse blasting and fine blasting, the grain size of the abrasive of the coarse blasting is 5-10 mm, and the grain size of the abrasive of the fine blasting is 1-3 mm.

Through adopting above-mentioned technical scheme, the particle diameter of sand ball will directly influence the roughness on steel sheet surface, also influences the anti-sliding coefficient value of friction surface, adopts the coarse blasting at first to clear up the attachment of large tracts of land on the casing, adopts smart blasting again to clear up the position of death on the casing, carries out sand blasting in grades, has improved the effect of casing sandblast.

Optionally, in the step S2, the compressed air in the sand blasting process is cooled when in use.

By adopting the technical scheme, the compressed air after cooling treatment can cool the sand balls when the sand balls are sprayed out, the sand balls are impacted on the shell, and the attachments on the shell can be quickly contracted under the cold sand balls, so that the attachments can be quickly fallen off from the shell.

Optionally, in step S3, after the ceramic particle coating is sprayed, the semi-finished product is subjected to a heating process.

By adopting the technical scheme, the ceramic particle coating can be quickly dried and cured by heating, and the production efficiency of the shell is improved.

Optionally, in the step S3, when the ceramic particle coating is sprayed, the thickness of the coating is 5-8 mm.

By adopting the technical scheme, the thickness of the ceramic particle coating is controlled, and the effect of corrosion resistance of the coating is achieved by using less materials.

Optionally, in the step S3, in the high-temperature curing treatment, the surface of the coating is dried at room temperature for 20min, the heating treatment temperature is controlled to be 40-50 ℃, the time is controlled to be 10min, and the coating is completely cured at room temperature for 10-15 days.

By adopting the technical scheme, the ceramic particle coating can be more stably connected with the metal shell through high-temperature curing treatment; different process times are set according to different temperatures, so that the required effect is achieved, and the utilization rate of energy is improved.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the metal material of the shell of the high-pressure plunger pump is protected by the erosion-resistant layer, so that the service life of the shell in a severe environment is prolonged;

2. after the ceramic particle coating is sprayed on the surface of the semi-finished product, high-temperature curing treatment is carried out, and the ceramic particle coating can be more stably connected with the metal shell through the high-temperature curing treatment; meanwhile, the pig iron and the scrap steel are mixed for use, so that the old resources are utilized, and the overall resource utilization rate is improved.

Drawings

Fig. 1 is a schematic structural view of a long-life high-pressure plunger pump according to an embodiment of the present application.

Description of reference numerals: 1. a housing; 2. an erosion resistant layer; 3. and (4) coating an epoxy resin.

Detailed Description

The present application is described in further detail below with reference to fig. 1.

The embodiment of the application discloses high-pressure plunger pump with long service life.

Referring to fig. 1, the high-pressure plunger pump comprises a shell 1, wherein an erosion resistant layer 2 is arranged on the outer side wall of the shell 1, and the erosion resistant layer 2 is a ceramic particle coating; the ceramic particle coating has excellent wear resistance, high adhesion to metal surface and fast curing.

Referring to fig. 1, one side of the erosion resistant layer 2, which faces away from the shell 1, is provided with an epoxy resin coating 3, and the epoxy resin coating 3 is sprayed on the erosion resistant layer 2 by an electrostatic spraying method.

The implementation principle of the high-pressure plunger pump with long service life is as follows: the metal material of the shell 1 of the high-pressure plunger pump is protected by the erosion-resistant layer 2, so that the service life of the shell 1 in a severe environment is prolonged.

The embodiment of the application also discloses a production process of the high-pressure plunger pump with long service life. The method comprises the following steps:

s1, manufacturing a blank: mixing pig iron and scrap steel, pouring the mixture into an electric arc steel-making furnace, heating the electric arc steel-making furnace to 1800 ℃ for 2 hours to melt the mixture into molten steel, carrying out chemical component analysis on the molten steel, and adding required elements according to the chemical component indexes of steel types;

preheating a casting mold, cooling the molten steel to 1500 ℃, pouring the molten steel into the casting mold of each part, cooling at room temperature, opening the mold after solidification, taking out a casting, cooling the casting at room temperature, and cooling to obtain a blank of each part of the shell 1.

S2, blank processing: carrying out heat treatment on the surface quenching of the blank;

performing sand blasting on the blank, wherein the sand blasting is divided into coarse sand blasting and fine sand blasting, the grain diameter of abrasive of the coarse sand blasting is 8mm, the grain diameter of abrasive of the fine sand blasting is 2mm, the abrasive of the sand blasting is ceramic sand, and compressed air in the sand blasting is cooled by a cooling device when in use;

when the sand blasting process is carried out, dirt such as attachments, welding slag, grease and the like on the surface of the metal is cleaned; the air temperature was maintained at 85 ℃; the compressed air is used as power, the sand shots are directly sprayed on the surface of the shell 1, so that the surface of the shell 1 reaches a certain roughness, rust is removed, and the surface of the shell 1 after the sand shots is iron gray.

Milling semi-finished products of all parts of the shell 1 by a milling machine; the semi-finished product of each part of the housing 1 is passed through a sander to remove excess burrs.

S3, coating a pond: spraying a ceramic particle coating on the surface of the semi-finished product by adopting an electrostatic spraying method, wherein the thickness of the coating is 6mm, and heating the semi-finished product to accelerate the drying and curing speed of the ceramic particle coating;

carrying out high-temperature curing treatment on the ceramic particle coating, and drying the surface of the coating for 20min at room temperature; heating in a 45 deg.C oven with hot air for 10 min; completely curing at 25 ℃ for 12 days;

and (3) spraying an epoxy resin coating 3 on the surface of the ceramic particle coating by adopting an electrostatic spraying method, wherein the epoxy resin coating 3 is cured for 2H at 220 ℃.

S4, finished product installation: and cleaning, drying and finally assembling finished products of all parts of the shell 1.

The implementation principle of the production process of the high-pressure plunger pump with long service life is as follows: after the ceramic particle coating is sprayed on the surface of the semi-finished product, high-temperature curing treatment is carried out, and the ceramic particle coating can be more stably connected with the metal shell 1 through the high-temperature curing treatment; meanwhile, the pig iron and the scrap steel are mixed for use, so that the old resources are utilized, and the overall resource utilization rate is improved.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.