CN212717376U - Semi-open pump case with non-metal lining - Google Patents
Semi-open pump case with non-metal lining Download PDFInfo
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- CN212717376U CN212717376U CN202021370675.2U CN202021370675U CN212717376U CN 212717376 U CN212717376 U CN 212717376U CN 202021370675 U CN202021370675 U CN 202021370675U CN 212717376 U CN212717376 U CN 212717376U
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Abstract
The utility model discloses a semi-open pump case of non-metal lining, which relates to the technical field of pumps, and comprises a metal pump case and a non-metal lining, wherein the metal pump case comprises a first flange surface, a first end surface, a first open surface, a first inner surface, a first outer surface, a plurality of pouring holes and a second flange surface, the non-metal lining comprises a second end surface, a second open surface, a second inner surface, a second outer surface and a plurality of pouring bulges, the plurality of pouring bulges are tightly attached to the plurality of pouring holes, and the second outer surface is tightly attached to the first inner surface; the first end surface is lower than the first flange surface, and the second end surface is flush with the first end surface; the second open face is lower than the first open face. The pump shell has the advantages of light weight, convenient installation, optimized design, simple assembly and disassembly and no leakage.
Description
Technical Field
The utility model belongs to the technical field of the pump technique and specifically relates to a semi-open pump case of non-metallic lining.
Background
The pump is a common mechanical device in industrial production, and can be used for conveying fluid or pressurizing fluid, the fluid mainly comprises water, oil, acid and alkali liquid, emulsion, solid particle suspension and the like, the fluid usually has certain corrosivity, and the fluid has a fast flow rate when flowing, can corrode the pump body and generate a large scouring force on the pump body to damage the pump body, and the pump shell can be used for protecting the pump body to reduce damage.
The pump casings on the market today are divided into two main types of materials, one being metal cast parts and the other being non-metallic and metal cast pump casing composites. The structure design of the metal pump shell in the non-metal material lining composite part only reserves the thickness of the non-metal lining of the metal pump shell, and then the designed size is achieved by filling the non-metal material lining; usually, the tensile strength of the metal pump shell framework structure is not enough when the metal pump shell framework structure is designed to be used as a non-metal material lining, and when the non-metal material lining is used by a customer, the non-metal lining layer is easy to partially fall off, crack and delaminate at the edge, so that the service life of the product is shortened. In addition, the tensile strength of the non-metal lining material and the metal pump shell is not enough, the exhaust design on the framework structure of the metal pump shell is unreasonable when the non-metal lining material and the metal pump shell are lined, and a manufacturer can often generate a large amount of bubbles on the surface of the non-metal lining material when the non-metal lining material is lined, crack and partially delaminate, so that secondary processing is needed to process the abnormal qualities, the manufacturing cost is increased, the production period is prolonged, and the market competitiveness of products is reduced.
For example, the invention patent application with application publication number CN109210010A discloses a pump casing, which comprises a pump casing metal framework and a non-metal liner, wherein the non-metal liner is fixed on the inner side of the pump casing metal framework in a wrapping manner; the pump casing metal framework comprises a first framework and a second framework; a groove is formed at the joint of the first framework and the second framework; the outer side surface of the first framework is provided with an opening; the centers of the first framework and the second framework are respectively provided with a circular through hole with the same diameter; a first transition structure and a second transition structure are arranged on the side walls of the circular through holes on the first framework and the second framework; through the arrangement of the grooves and the transition structure, the tensile strength between the non-metal material inner liner and the metal framework of the pump shell is greatly improved, the smooth and sufficient exhaust of the blanking during the pouring of the inner liner material is ensured, and the defects of peeling, delaminating, cracking, air holes and the like of the inner liner material are avoided.
However, the integral non-metal lining pump shell is heavy, and has high requirements on hoisting equipment when the pump body moves and turns over, so that the pump shell has certain dangerousness; the design of the nonmetal vacuum casting mould is complex, and the cost is higher. Because the integral design of casing leads to the runner space narrow, the operation personnel is more difficult when mould equipment with dismantle, and work efficiency is lower, and the cost of labor is high. In the production process, the generation probability of quality defects such as air holes, looseness and the like caused by narrow flow channels is high, the one-time qualification rate can only reach 60-70%, and the quality maintenance cost is high. In addition, the combination strength of the open metal pump shell and the non-metal lining composite part is not high, and the slurry leakage is easily caused due to the unreasonable sealing design after the two open pump shells are combined into a whole, so that the shutdown and the replacement are frequent, the working efficiency is influenced, the production cost is increased, and the market competitiveness of products is reduced.
Therefore, how to reduce the self weight of the pump shell, optimizing the design, and having simple assembly and disassembly, and preventing leakage is a problem which must be solved in the production of the pump shell.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is: how to lighten the dead weight of the pump shell, optimize the design, assemble, demold the mould simply, prevent to leak.
The utility model discloses a solve the technical scheme that above-mentioned technical problem adopted and be: the non-metal lining semi-open type pump shell comprises a metal pump shell and a non-metal lining, wherein the metal pump shell comprises a first flange surface, a first end surface, a first middle opening surface, a first inner surface, a first outer surface and a second flange surface, a plurality of bulges are uniformly arranged on a connecting line of the highest point of an arc of the first outer surface, the plurality of bulges are provided with through holes to form a pouring hole, the first middle opening surface is respectively connected with the first flange surface, the first end surface, the first inner surface and the first outer surface, the first end surface is connected with the first inner surface, and the first flange surface and the second flange surface are respectively connected with the first outer surface;
the nonmetal inner liner comprises a second end surface, a second open surface, a second inner surface and a second outer surface, wherein a plurality of pouring bulges are arranged on the second outer surface, the pouring bulges correspond to the pouring holes in a one-to-one mode, the second open surface is respectively connected with the second end surface, the second inner surface and the second outer surface, and the second end surface is respectively connected with the second inner surface and the second outer surface;
the plurality of pouring bulges are tightly attached to the plurality of pouring holes, and the second outer surface is tightly attached to the first inner surface;
the first end surface is lower than the first flange surface, and the second end surface is flush with the first end surface;
the second open face is lower than the first open face.
When the sealing device works, the O-shaped sealing gaskets are arranged on the first end face and the second end face, pressure is generated when the first flange face is connected with an external pipeline, the O-shaped sealing gaskets are pressed and deformed, no gap exists between the pump shell and the pipeline, and a good sealing effect is achieved. The special T-shaped sealing gasket is placed on the second middle opening surface and the first middle opening surface, the two symmetrical semi-open type pump shells are connected together, the special T-shaped sealing gasket is extruded and deformed, no gap exists between the two semi-open type pump shells, the middle opening surface is guaranteed not to leak slurry, and a good sealing effect is achieved.
Preferably, above-mentioned non-metal lining semi-open pump case, set up first seal groove on the first well open face, set up the second seal groove on the second well open face, adopt double containment, two semi-open pump cases of mutual symmetry link together, with two sealed pad extrusion deformation, do not have the space between two semi-open pump cases, guarantee that well open face can not leak the thick liquid, reach good sealed effect.
Preferably, foretell non-metal lining semi-open pump case, first seal groove and second seal groove are located the junction of first well open face and second well open face, and first seal groove and second seal groove link together, and the width is the same, and two semi-open pump cases of mutual symmetry are connected together, and the extrusion deformation that will seal up makes not have the space between two semi-open pump cases, guarantees that well open face can not leak the thick liquid, reaches good sealed effect.
Preferably, the second middle open surface of the pump casing is 1-5mm lower than the first middle open surface.
Preferably, in the above semi-open pump casing with a non-metallic liner, the outer ring of the first middle opening surface has a plurality of connecting bolt holes.
Preferably, the non-metal lining semi-open type pump shell has the advantages that the second inner surface is molded by casting once, the surface is smooth and flat, the resistance of the pump shell to slurry is reduced, the energy consumption is reduced, and the working efficiency of the pump is improved by about 10%.
Preferably, above-mentioned non-metal lining semi-open pump case, first flange face and second flange face are last to have a plurality of screw, and the screw evenly distributed.
Preferably, foretell semi-open pump case of non-metallic lining, the metal pump case still includes first arch, non-metallic lining still includes the second arch, first arch and the protruding close fit of second, in addition a plurality of pouring are protruding to be closely laminated with a plurality of pouring hole, reduce and avoid producing between metal pump case and the non-metallic lining and peel off, the fracture, the delaminating, quality defects such as gas pocket, thereby reduce and reprocess, scrap the production cost loss that causes because of quality defect, the product manufacturing cycle has been shortened, the competitiveness of this product in the market has been improved.
Preferably, foretell semi-open pump case of non-metallic lining, metal pump case still include two lower margins, and the lower margin has a plurality of connecting bolt hole on the lower margin on first surface.
Preferably, the pump casing further comprises a lifting ring on the first outer surface.
Preferably, the pump casing with the non-metal lining is semi-open, and the metal pump casing further comprises a plurality of reinforcing ribs, so that minimum deformation of the metal pump casing is ensured.
Preferably, in the above semi-open pump casing with a non-metal liner, the non-metal is polymer silicon carbide composite ceramic.
The non-metal lining semi-open type pump shell has the advantages that the weight is reduced by half when the pump shell is installed and hoisted due to the two-half split type structure, the problem that the traditional integral type pump shell is difficult to hoist when installed on site is solved, and the safety is ensured; the problem of high design cost of the traditional integral pump shell mold is solved, and the development cost of the mold is saved; the problems that the traditional integral pump shell mold is difficult to assemble and disassemble and operators are easy to hurt are solved; the adopted sealing structure solves the leakage problem of the semi-open type pump shell.
The application also provides a preparation method of the semi-open pump shell with the non-metal lining, which comprises the following steps:
1. and designing a 3D drawing of the semi-open pump shell with the non-metal lining according to the pump hydraulic drawing paper.
2. And (4) carrying out structural model design and strength analysis by using software.
3. And designing a metal casting mold for the appearance of the non-metal lining semi-open type pump shell.
4. And (3) performing metal casting on the outer shape of the semi-open pump shell with the non-metal lining.
5. And (3) carrying out heat treatment on the non-metal lining semi-open type pump shell profile metal piece.
6. And performing shot blasting treatment on the metal piece outside the non-metal lining semi-open type pump shell and protecting the metal piece by using an anticorrosive wear-resistant coating.
7. And machining a metal part on the outer shape of the non-metal lining semi-open type pump shell.
8. And 3D dimension scanning of the non-metal lining semi-open type pump shell outline metal piece.
9. The design of the inner lining mould of the non-metal inner lining semi-open type pump shell.
10. And assembling a nonmetal lining semi-open type pump shell lining mold.
11. And placing the cast product into a semi-automatic vacuum rotary hot casting system for casting the non-metal lining.
12. And demolding and finish machining the nonmetal lining semi-open pump shell mold.
13. And (4) checking the integral 3D size of the nonmetal lining semi-open pump shell by scanning.
14. And detecting the ultrasonic internal defects of the non-metal lining semi-open type pump shell.
15. And (4) simulating the working condition on the nonmetal lining semi-open type pump shell to carry out corrosion resistance and wear resistance strength test.
16. And determining to meet the design requirement.
Preferably, in the preparation method of the semi-open pump case with the non-metal lining, the non-metal is polymer silicon carbide composite ceramic.
The semi-open pump shell with the non-metal lining prepared by the method utilizes the characteristics of high wear resistance and strong chemical corrosion resistance of the non-metal lining, directly contacts slurry to protect the metal pump shell outside from corrosion and abrasion, and simultaneously utilizes the metal ductility of the metal pump shell outside to be butted and assembled with other parts; the non-metal inner liner layer has the advantages of compact structure, no crack, looseness and other quality defects, the one-time qualified rate is more than 95%, the production efficiency is improved, and the labor cost is saved.
The utility model has the advantages that: the non-metal lining semi-open type pump shell is provided, because of the two-half split type structure, the weight is reduced by half during installation and hoisting, the problem that the hoisting is difficult during field installation of the traditional integral type pump shell is solved, and the safety is ensured; the problem of high design cost of the traditional integral pump shell mold is solved, and the development cost of the mold is saved; the problems that the traditional integral pump shell mold is difficult to assemble and disassemble and operators are easy to hurt are solved; the adopted sealing structure solves the leakage problem of the semi-open type pump shell; and the quality defects such as stripping, cracking, delaminating, air holes and the like generated between the metal pump shell and the non-metal lining are reduced and avoided, so that the production cost loss caused by the quality defects such as repair, scrapping and the like is reduced, the product manufacturing period is shortened, and the market competitiveness of the product is improved. A method for preparing the semi-open pump case of non-metal inner liner, the pouring surface of the semi-open pump case inner liner of non-metal inner liner prepared by this method is poured and molded at one time, the surface is very smooth, reduce its resistance with the thick liquid, reduce the energy consumption, has raised the working efficiency of the pump about 10%; the non-metal lining has a compact structure, has no quality defects such as cracks and looseness, has a one-time qualification rate of over 95 percent, improves the production efficiency and saves the labor cost; the combination of metal ductility and the wear-resistant and strong corrosion-resistant characteristics of the non-metal lining is utilized, and the technical problem of wear resistance and corrosion resistance in the industry is thoroughly solved.
Drawings
The present invention will be further explained with reference to the drawings and examples.
FIG. 1 is a schematic view of a metal pump casing construction;
FIG. 2 is a schematic view of a non-metallic liner;
FIG. 3 is a water outlet sealing structure;
FIG. 4 is an enlarged view A;
FIG. 5 is a mid-open face seal configuration;
FIG. 6 is an external view of a semi-open pump casing with a non-metallic liner;
FIG. 7 is a sectional view taken along line A-A;
FIG. 8 is a method of making a semi-open pump casing with a non-metallic liner;
FIG. 9 is a table of general performance parameters for a non-metal lined semi-open pump casing;
wherein 1 is first flange face, 2 is first terminal surface, 3 is first well open face, 4 is first internal surface, 5 is first surface, 6 is the pouring hole, 7 is first seal groove, 8 is the second terminal surface, 9 is second well open face, 10 is the second internal surface, 11 is the second surface, 12 is the pouring arch, 13 is the second seal groove, 14 is the second flange face, 15 is first arch, 16 is the second arch, 17 is the lower margin, 18 is the rings, 19 is the strengthening rib.
Detailed Description
[ example 1 ]
As shown in fig. 1, 2 and 6, a semi-open pump casing with a non-metal lining comprises a metal pump casing and a non-metal lining, wherein the metal pump casing comprises a first flange surface 1, a first end surface 2, a first open center surface 3, a first inner surface 4, a first outer surface 5 and a second flange surface 14, a plurality of protrusions are uniformly arranged on a connecting line of the highest point of an arc of the first outer surface 5, the plurality of protrusions are provided with through holes to form a pouring hole 6, the first open center surface 3 is respectively connected with the first flange surface 1, the first end surface 2, the first inner surface 4 and the first outer surface 5, the first end surface 2 is connected with the first inner surface 4, and the first flange surface 1 and the second flange surface 14 are respectively connected with the first outer surface 5;
the nonmetal inner liner comprises a second end surface 8, a second open surface 9, a second inner surface 10 and a second outer surface 11, a plurality of pouring protrusions 12 are arranged on the second outer surface 11, the pouring protrusions 12 correspond to the pouring holes 6 in a one-to-one mode, the second open surface 9 is connected with the second end surface 8, the second inner surface 10 and the second outer surface 11 respectively, and the second end surface 8 is connected with the second inner surface 10 and the second outer surface 11 respectively;
the plurality of pouring bulges 12 are tightly attached to the plurality of pouring holes 6, and the second outer surface 11 is tightly attached to the first inner surface 4; as shown in fig. 4, the first end face 2 is lower than the first flange face 1, and the second end face 8 is flush with the first end face 2; as shown in fig. 5, the second open face 9 is lower than the first open face 3.
As shown in fig. 3 and 4, in operation, the first end face 2 and the second end face 8 are provided with O-shaped sealing gaskets, the first flange face 1 is provided with a plurality of screw holes, pressure is generated when the first flange face 1 is connected with an external pipeline, the O-shaped sealing gaskets are pressed and deformed, no gap exists between the pump shell and the pipeline, and a good sealing effect is achieved. As shown in fig. 5, the second middle opening surface 9 is 1mm lower than the first middle opening surface 3, the special T-shaped sealing gasket is arranged on the second middle opening surface 9 and the first middle opening surface 3, the outer ring of the first middle opening surface 9 is provided with a plurality of connecting bolt holes, two symmetrical semi-open pump casings are connected together, the special T-shaped sealing gasket is extruded and deformed, no gap exists between the two semi-open pump casings, the slurry can not leak from the middle opening surface, and a good sealing effect is achieved.
The second inner surface 10 is molded by one-time casting, the surface is smooth and flat, the resistance of the second inner surface to slurry is reduced, the energy consumption is reduced, and the working efficiency of the pump is improved by about 10%.
The second flange surface 14 is provided with a plurality of screw holes which are uniformly distributed and connected with a water inlet pipeline.
As shown in fig. 1 and 2, the metal pump shell further comprises a first protrusion 15, the non-metal lining further comprises a second protrusion 16, the first protrusion 15 is tightly matched with the second protrusion 16, and in addition, the plurality of pouring protrusions 12 are tightly attached to the plurality of pouring holes 6, so that quality defects such as stripping, cracking, delaminating and air holes between the metal pump shell and the non-metal lining are reduced and avoided, the production cost loss caused by the quality defects such as repair and scrapping is reduced, the product manufacturing period is shortened, and the market competitiveness of the product is improved.
As shown in fig. 6, the metal pump casing further comprises two feet 17, the feet 17 are arranged on the first outer surface 5, and the feet 17 are provided with a plurality of connecting bolt holes; the metal pump casing further comprises a lifting eye 18, the lifting eye 18 being on the first outer surface 5; the metal pump casing also includes a plurality of ribs 19 to ensure minimal deformation of the metal pump casing.
The non-metal lining is made of high-molecular silicon carbide composite ceramic.
The non-metal lining semi-open type pump shell has the advantages that the weight is reduced by half when the pump shell is installed and hoisted due to the two-half split type structure, the problem that the traditional integral type pump shell is difficult to hoist when installed on site is solved, and the safety is ensured; the problem of high design cost of the traditional integral pump shell mold is solved, and the development cost of the mold is saved; the problems that the traditional integral pump shell mold is difficult to assemble and disassemble and operators are easy to hurt are solved; the adopted sealing structure solves the leakage problem of the semi-open type pump shell.
[ example 2 ]
Except that the sealing structure of the median plane is different, other parts are the same.
The utility model provides a nonmetal inside lining semi-open pump case, offers first seal groove 7 in the first face of opening 3, offers second seal groove 13 in the second on the face of opening 9, adopts double containment, and two semi-open pump cases of mutual symmetry are connected to together, with two sealed pad extrusion deformation, make not have the space between two semi-open pump cases, guarantee that the face of opening can not leak the thick liquid, reach good sealed effect.
[ example 3 ]
Except that the sealing structure of the median plane is different, other parts are the same.
The utility model provides a non-metallic lining semi-open pump case, first seal groove 7 and second seal groove 13 are located the junction of first well open face 3 and second well open face 9, and first seal groove 7 links together with second seal groove 13, and the width is the same, and two semi-open pump cases of mutual symmetry are connected together, will seal the extrusion deformation of filling up, make not have the space between two semi-open pump cases, and the face of opening can not leak the thick liquid in guaranteeing, reaches good sealed effect.
Comparative example 1
The tensile strength of the metal pump shell and the plastic lining pump shell is 11-13 Mpa; the metal pump shell is corroded, penetrated and leaked, and the defect rate of cracking, delaminating, air holes and the like of the end face and the edge of the plastic lining pump shell is more than 85 percent.
The tensile strength of the high-molecular silicon carbide composite ceramic pump shell is more than 20 Mpa; the defect rate of cracking, delaminating, pores and the like of the end face and the edge of the high-molecular silicon carbide composite ceramic pump shell is less than 3 percent.
Comparative example 2
Compared with an integral pump shell, the development cost of the die is reduced by 30%, the labor hour is reduced by 50%, and the qualification rate reaches 98%.
Claims (10)
1. The utility model provides a non-metal lining semi-open pump case, includes metal pump case and non-metal lining, its characterized in that:
the metal pump shell comprises a first flange surface, a first end surface, a first open surface, a first inner surface, a first outer surface and a second flange surface, wherein a plurality of bulges are uniformly arranged on a connecting line of the highest point of an arc of the first outer surface, a plurality of opening holes of the bulges form a pouring hole, the first open surface is respectively connected with the first flange surface, the first end surface, the first inner surface and the first outer surface, the first end surface is connected with the first inner surface, and the first flange surface and the second flange surface are respectively connected with the first outer surface;
the nonmetal inner liner comprises a second end surface, a second open surface, a second inner surface and a second outer surface, wherein a plurality of pouring bulges are arranged on the second outer surface, the pouring bulges correspond to the pouring holes in one-to-one mode, the second open surface is respectively connected with the second end surface, the second inner surface and the second outer surface, and the second end surface is respectively connected with the second inner surface and the second outer surface;
the plurality of pouring bulges are tightly attached to the plurality of pouring holes, and the second outer surface is tightly attached to the first inner surface;
the first end face is lower than the first flange face, and the second end face is flush with the first end face;
the second open face is lower than the first open face.
2. A non-metal lined semi-open pump casing according to claim 1, wherein: and the first open surface is provided with a first sealing groove, and the second open surface is provided with a second sealing groove.
3. A non-metal lined semi-open pump casing according to claim 2, wherein: the first sealing groove and the second sealing groove are located at the connecting position of the first open surface and the second open surface, and the first sealing groove and the second sealing groove are connected together and have the same width.
4. A non-metal lined semi-open pump casing according to claim 3, wherein: the second middle open surface is 1-5mm lower than the first middle open surface.
5. The pump casing of claim 4 wherein: the first middle open face outer ring is provided with a plurality of connecting bolt holes.
6. A non-metal lined semi-open pump casing according to claim 5, wherein: the nonmetal is polymer silicon carbide composite ceramic.
7. A non-metal lined semi-open pump casing according to claim 6, wherein: the second inner surface is molded by one-time casting, and the surface is smooth and flat.
8. A non-metal lined semi-open pump casing according to claim 7, wherein: and the first flange surface and the second flange surface are provided with a plurality of screw holes which are uniformly distributed.
9. A non-metal lined semi-open pump casing according to claim 8, wherein: the metal pump shell further comprises a first bulge, the non-metal liner further comprises a second bulge, and the first bulge and the second bulge are tightly matched.
10. The non-metal lined semi-open pump casing of claim 9, wherein said metal pump casing:
the first outer surface is provided with a first connecting bolt hole;
the lifting ring is arranged on the first outer surface;
also comprises a plurality of reinforcing ribs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021370675.2U CN212717376U (en) | 2020-07-13 | 2020-07-13 | Semi-open pump case with non-metal lining |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021370675.2U CN212717376U (en) | 2020-07-13 | 2020-07-13 | Semi-open pump case with non-metal lining |
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| Publication Number | Publication Date |
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| CN212717376U true CN212717376U (en) | 2021-03-16 |
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| CN202021370675.2U Active CN212717376U (en) | 2020-07-13 | 2020-07-13 | Semi-open pump case with non-metal lining |
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