CN213270170U - Chemical industry ground paste plunger pump with ceramic coating plunger - Google Patents
Chemical industry ground paste plunger pump with ceramic coating plunger Download PDFInfo
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- CN213270170U CN213270170U CN202021703895.2U CN202021703895U CN213270170U CN 213270170 U CN213270170 U CN 213270170U CN 202021703895 U CN202021703895 U CN 202021703895U CN 213270170 U CN213270170 U CN 213270170U
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Abstract
The utility model relates to the technical field of plunger pumps, in particular to a chemical slurry plunger pump with a ceramic coating plunger, which effectively buffers the stress impact brought by high-pressure working conditions to the ceramic coating; the chemical reaction is not easy to occur to most of acid, alkali and salt; including the pivot, first protective layer, the second protective layer, the third protective layer, a housing, change the piece, sloping cam plate and second valve, the pivot surface is adhered to first protective layer respectively, second protective layer and third protective layer, the casing middle part is provided with the oil storage chamber, the casing top is provided with the oil inlet, oil inlet and oil storage chamber intercommunication, the casing left end is provided with the bearing, the pivot right-hand member passes the bearing inner circle with one heart and is connected with change the piece left end, it is located the oil storage intracavity to change the piece, it is connected with the sloping cam plate left end to change the piece right-hand member, the multiunit plunger rod is installed to the sloping cam plate right-hand member, oil storage chamber right-hand member is provided with multiunit notes oil pipe, it is provided.
Description
Technical Field
The utility model relates to a technical field of plunger pump especially relates to a chemical industry ground paste plunger pump with ceramic coating plunger.
Background
Due to the complex and special process of modern chemical production, the material of the pump needs to meet the requirements of strength, temperature resistance, wear resistance, corrosion resistance and the like, and the requirements of wear resistance and corrosion resistance in a high-temperature state are often more outstanding. Stainless steel, while resistant to corrosion in most cases, does not work in strongly corrosive solutions such as sulfuric acid, hydrochloric acid, hydrofluoric acid, and the like.
Under the production conditions of the wet-process phosphorus compound fertilizer industry, the working medium of a concentrated phosphoric acid slurry pump in a phosphoric acid and ammonium phosphate device is phosphoric acid. The wet-process phosphoric acid production adopts sulfuric acid to extract phosphorite, and the used raw material is medium-low grade phosphorite with common resources, and the impurity content is more than 40. The compound such as phosphate and fluosilicate generated by the reaction is precipitated and the byproduct phosphogypsum in the production of phosphoric acid is crystallized to form slurry with high content of particulate matters. And contains various kinds of CL and SO causing strong corrosion of metal materials4And F ions, so that the production equipment works under severe production conditions. Slurry pump plungers are susceptible to severe wear and corrosion and have a short working life. The plunger is sealed by a packing, the working temperature is 80-120 ℃, and the pressure is 10 MPa. Because of the particulate crystals in the fluid, the plunger surface is subjected to severe abrasive wear under high temperature and pressure friction. CL and SO in the slurry at the same time4The corrosion strength of F ions under high temperature is greatly enhanced, and various high alloy stainless steels do not have enough corrosion and abrasion resistance.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides a stress impact on the ceramic coating caused by high pressure working condition is effectively buffered; the chemical reaction is not easy to occur to most of acid, alkali and salt; the chemical slurry plunger pump with the ceramic coating plunger has strong corrosion and abrasion resistance.
The utility model discloses a chemical industry ground paste plunger pump with ceramic coating plunger, which comprises a rotating shaft, first protective layer, the second protective layer, the third protective layer, a housing, the commentaries on classics piece, sloping cam plate and second valve, first protective layer and second protective layer are adhered to respectively to the pivot surface, the casing middle part is provided with the oil storage chamber, the casing top is provided with the oil inlet, oil inlet and oil storage chamber intercommunication, the casing left end is provided with the bearing, the pivot right-hand member passes the bearing inner circle with one heart and is connected with the commentaries on classics piece left end, the commentaries on classics piece is located the oil storage intracavity, the commentaries on classics piece right-hand member is connected with the sloping cam plate left end, the multiunit plunger rod is installed to the sloping cam plate right-hand member, oil storage chamber right.
The utility model discloses a chemical industry ground paste plunger pump with ceramic coating plunger, wherein first protective layer material is the nichrome transition coating that the content percentage is 80/20.
The utility model discloses a chemical industry ground paste plunger pump with ceramic coating plunger, wherein the second protective layer material is the chromium oxide ceramic powder of the reaction sintering technology production that purity exceeds 99%.
The utility model discloses a chemical industry ground paste plunger pump with ceramic coating plunger, still be provided with the third protective layer that adheres to on the second protective layer in the pivot; wherein the third protective layer is made of a polymer resin sealant.
The utility model discloses a chemical industry ground paste plunger pump with ceramic coating plunger is provided with the multiunit plunger rod on the sloping cam plate.
The utility model discloses a chemical industry ground paste plunger pump with ceramic coating plunger, every group plunger pole, notes oil pipe and second valve collineation.
Compared with the prior art, the beneficial effects of the utility model are that: the plunger pump with the high-wear-resistance and corrosion-resistance ceramic composite coating has excellent corrosion resistance and high bonding strength with the stainless steel substrate, and can effectively buffer the stress impact on the ceramic coating caused by high-pressure working conditions; has the characteristics of high hardness, high chemical inertness and good high-temperature stability. The hardness of the coating can reach HV1300, the porosity is lower than 2 percent, the surface can reach a mirror surface state through precision polishing, and the roughness reaches Ra: 0.03; the surface friction coefficient is low, and the friction pair has an antifriction effect; the corrosion resistance is excellent, the chemical reaction is not easy to occur to most of acid, alkali and salt, and the practicability is improved.
Drawings
Fig. 1 is a schematic view of an explosion structure of the protective layer of the plunger rod of the present invention;
fig. 2 is a schematic structural diagram of the plunger pump of the present invention;
in the drawings, the reference numbers: 1. a rotating shaft; 2. a first protective layer; 3. a second protective layer; 4. a third protective layer; 5. a housing; 6. an oil inlet; 7. a bearing; 8. rotating the block; 9. a swash plate; 10. a plunger rod; 11. an oil filling pipe; 12. a first valve; 13. an oil outlet pipe; 14. a second valve.
Detailed Description
The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.
As shown in figures 1 and 2, the utility model discloses a chemical industry ground paste plunger pump with ceramic coating plunger, including pivot 1, first protective layer 2, second protective layer 3, third protective layer 4, casing 5, turning block 8, sloping cam plate 9 and second valve 14, pivot 1 surface is respectively adhered with first protective layer 2, second protective layer 3 and third protective layer 4, casing 5 middle part is provided with the oil storage chamber, casing 5 top is provided with oil inlet 6, oil inlet 6 communicates with the oil storage chamber, casing 5 left end is provided with bearing 7, pivot 1 right-hand member passes bearing 7 inner circle with one heart and is connected with turning block 8 left end, turning block 8 is located the oil storage chamber, turning block 8 right-hand member is connected with sloping cam plate 9 left end, sloping cam plate 9 right-hand member installs multiunit plunger rod 10, oil storage chamber right-hand member is provided with multiunit oiling pipe 11, oiling pipe 11 middle part is provided with first valve 12, casing 5 right-hand member is provided with oil outlet pipe, a plurality of groups of second valves 14 are arranged on the oil outlet pipe 13; and preparing the high-wear-resistance corrosion-resistance ceramic composite coating on the surface of the plunger through a plasma spraying process. The corrosion resistance is excellent, the bonding strength with the base material stainless steel is high, and the stress impact on the ceramic coating caused by a high-pressure working condition can be effectively buffered; has the characteristics of high hardness, high chemical inertness and good high-temperature stability. The hardness of the coating can reach HV1300, the porosity is lower than 2 percent, the surface can reach a mirror surface state through precision polishing, and the roughness reaches Ra: 0.03; the surface friction coefficient is low, and the friction pair has an antifriction effect; the corrosion resistance is excellent, the chemical reaction is not easy to occur to most of acid, alkali and salt, and the practicability is improved.
The utility model discloses a chemical industry ground paste plunger pump with ceramic coating plunger, its process is:
1. the part of the plunger matrix coating is cut down to reserve the thickness of 0.3mm of coating, and the connecting part of the coating edge and the matrix is chamfered by 45 degrees.
2. The substrate is subjected to oil removal and baking treatment by an organic solvent. Blasting with 24 brown corundum sand and protecting the uncoated area with a clamp. The pressure of the sand blasting compressed air is 5kg, the distance is 15cm, and the sand blasting angle is 80 degrees. The coarsening of the surface of the matrix after sand blasting is uniform and reaches grade Sa 3.
3. The substrate was preheated to 100 ℃ and a nickel-chromium primer coating was applied using a plasma jet gun SG100 spray gun 730 nozzle from Thermich corporation, spray current 400A, voltage 38V, and coating thickness 0.1 mm.
4. The chromium oxide coating was sprayed using a subsonic nozzle of a spray gun 720 of the plasma apparatus SG100 from Thermich, USA, at a spray current of 550A and a voltage of 45V, with a coating thickness of 0.3 mm.
5. And (3) carrying out vacuum impregnation hole sealing on the coating by using an epoxy organic hole sealing agent, wherein the impregnation time is 20 minutes, and heating and curing are carried out after the surface is dried for 2 hours.
6. Grinding the plunger by a grinding machine, and performing three procedures of coarse grinding, fine grinding and polishing, wherein carborundum grinding wheels of 120 meshes, 800 meshes and 2500 meshes are respectively used.
The utility model discloses a chemical industry ground paste plunger pump with ceramic coating plunger, it is at the during operation, presses oil through 06 feed liquor, and hydraulic oil storage is in the oil pocket, and power take off end drives pivot 1 and rotates to drive sloping cam plate 19 through commentaries on classics piece 8 and rotate, at the rotation in-process, plunger rod 10 and the cooperation of notes oil pipe 11, push down first valve 12 through hydraulic oil, make hydraulic oil through going out oil pipe output, provide power for the device.
The utility model discloses a chemical industry ground paste plunger pump with ceramic coating plunger, its mounting means, connected mode or set up the mode and be common mechanical type, as long as can reach all can implement of its beneficial effect.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (4)
1. A chemical industry slurry plunger pump with ceramic coating plunger is characterized by comprising a rotating shaft (1), a first protective layer (2), a second protective layer (3), a third protective layer (4), a shell (5), a rotating block (8), a swash plate (9) and a second valve (14), wherein the first protective layer (2) and the second protective layer (3) are respectively attached to the surface of the rotating shaft (1), an oil storage cavity is arranged in the middle of the shell (5), an oil inlet (6) is arranged at the top end of the shell (5), the oil inlet (6) is communicated with the oil storage cavity, a bearing (7) is arranged at the left end of the shell (5), the right end of the rotating shaft (1) concentrically penetrates through the inner ring of the bearing (7) to be connected with the left end of the rotating block (8), the rotating block (8) is positioned in the oil storage cavity, the right end of the rotating block (8) is connected with the left end of the swash plate (9), a plurality of plunger rods (, the middle part of the oil filling pipe (11) is provided with a first valve (12), the right part of the shell (5) is provided with an oil outlet pipe (13), and a plurality of groups of second valves (14) are arranged on the oil outlet pipe (13).
2. The chemical slurry plunger pump with the ceramic coating plunger as claimed in claim 1, wherein a third protective layer (4) attached to the second protective layer (3) is further arranged on the rotating shaft (1); wherein the third protective layer (4) is made of a polymer resin hole sealing agent layer.
3. Chemical slurry plunger pump with ceramic coated plunger according to claim 1, characterized in that the swash plate (9) is provided with a plurality of sets of plunger rods (10).
4. Chemical slurry plunger pump with ceramic coated plunger according to claim 1, characterized in that each set of plunger rod (10), filler pipe (11) and second valve (14) are collinear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021703895.2U CN213270170U (en) | 2020-08-15 | 2020-08-15 | Chemical industry ground paste plunger pump with ceramic coating plunger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021703895.2U CN213270170U (en) | 2020-08-15 | 2020-08-15 | Chemical industry ground paste plunger pump with ceramic coating plunger |
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| Publication Number | Publication Date |
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| CN213270170U true CN213270170U (en) | 2021-05-25 |
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| CN202021703895.2U Active CN213270170U (en) | 2020-08-15 | 2020-08-15 | Chemical industry ground paste plunger pump with ceramic coating plunger |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113898548A (en) * | 2021-08-30 | 2022-01-07 | 北京工业大学 | Self-lubricating connecting rod plunger type valve flow distribution hydraulic pump |
-
2020
- 2020-08-15 CN CN202021703895.2U patent/CN213270170U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113898548A (en) * | 2021-08-30 | 2022-01-07 | 北京工业大学 | Self-lubricating connecting rod plunger type valve flow distribution hydraulic pump |
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