CN-224228849-U - Plunger pump cylinder body

CN224228849UCN 224228849 UCN224228849 UCN 224228849UCN-224228849-U

Abstract

The utility model relates to a plunger pump cylinder body, which comprises a metal outer cylinder body, a plastic inner cylinder body and a solid material layer, wherein the plastic inner cylinder body is arranged in the metal outer cylinder body, and the plastic inner cylinder body is fixedly connected with the solid material layer. The plastic inner cylinder body has the advantages that the plastic inner cylinder body is firmly fixed in the inner cavity of the metal outer cylinder body in the radial direction and the axial direction, the metal outer cylinder body and the plastic inner cylinder body can be prevented from moving in the circumferential direction, the plunger pump can stably and reliably run, the strength of the solidified solid material layer can be increased by the solid material layer, the plastic inner cylinder body of the inner liner can be firmly fixed on the metal outer cylinder body, the strength of the plunger can be increased by the metal framework, the connection strength of the plunger and the plunger pushing rod is enhanced, and the plastic is anchored and the fixing strength is enhanced by the holes formed in the metal framework when the annular cylindrical metal framework is fixedly connected with the plastic layer. The plastic inner cylinder body has high strength and good self-lubricating performance.

Inventors

JIANG LONGFU
WANG YUEPING
JIANG LINGCHAO
GAO JINLONG
JIANG CHAO
DU JIEXING

Assignees

宜兴市宙斯泵业有限公司

Dates

Publication Date: 20260512
Application Date: 20250513

Claims (9)

1. A plunger pump cylinder body is characterized by comprising a metal outer cylinder body, a plastic inner cylinder body and a solid material layer, wherein the plastic inner cylinder body is arranged in the metal outer cylinder body, the plastic inner cylinder body is fixedly connected with the solid material layer, the solid material layer is fixedly connected with the metal outer cylinder body, and the solid material layer is used for fixing and limiting the axial position of the plastic inner cylinder body, so that the plastic inner cylinder body is fixed in an inner cavity of the metal outer cylinder body in the radial direction and the axial direction.
2. The plunger pump cylinder as set forth in claim 1, wherein an annular groove is provided on an outer side of said plastic inner cylinder, an annular protrusion is provided on an inner wall of said metal outer cylinder, and said solid material layer is provided at a gap portion between said annular groove and said annular protrusion.
3. The plunger pump cylinder as set forth in claim 1, wherein said metal skeleton is embedded in said plastic inner cylinder.
4. The plunger pump cylinder as set forth in claim 3, wherein the metal skeleton is in the shape of a ring, and the ring is provided with a plurality of holes uniformly along the side wall of the ring.
5. The plunger pump cylinder as set forth in claim 4, wherein said metal skeleton is entirely encased in said plastic inner cylinder.
6. The plunger pump cylinder as set forth in claim 1, wherein said plastic inner cylinder is made of polyethylene, polypropylene, polyether ether ketone, polytetrafluoroethylene or polyethylene with a molecular weight of 300-700 ten thousand.
7. The plunger pump cylinder as set forth in claim 1, wherein the thickness of the layer of the solid material is set to 2-20 mm.
8. The plunger pump cylinder as set forth in claim 1, wherein the solid material layer is an epoxy resin material or a cement material filled with silicon carbide and/or quartz sand.
9. The plunger pump cylinder as set forth in claim 8, wherein said epoxy resin material or cement material is filled with silicon carbide and/or quartz sand in an amount of 50% of the entire volume of said solid material layer.

Description

Plunger pump cylinder body Technical Field The utility model belongs to the technical field of plunger volumetric type slurry pumps, and particularly relates to a plunger pump cylinder body. Background In the prior art, the plunger pump cylinder body in the plunger pump has low strength, high brittleness, easy cracking and damage and poor installation performance. When the pump works, the pressure between the pump cylinder body and the plastic lining layer is easy to be extruded under the high pressure of fluid, and the plastic lining layer can be shrunken and deformed under the high negative pressure of the plunger pump, so that the lining is torn and deformed, the plastic lining layer is stretched and deformed, even cracked and shed, and when the temperature of the slurry conveying is higher than 60 ℃, the deformation condition of the plastic lining layer can seriously influence the normal operation of the pump. Disclosure of utility model The utility model aims to overcome the defects in the prior art and provides a plunger pump cylinder body. A plunger pump cylinder body comprises a metal outer cylinder body, a plastic inner cylinder body and a solid material layer, wherein the plastic inner cylinder body is arranged in the metal outer cylinder body, the plastic inner cylinder body is fixedly connected with the solid material layer, the solid material layer is fixedly connected with the metal outer cylinder body, and the solid material layer is used for fixing and limiting the axial position of the plastic inner cylinder body, so that the plastic inner cylinder body is fixed in an inner cavity of the metal outer cylinder body in the radial direction and the axial direction. The plastic inner cylinder body is fixedly fixed in the inner cavity of the metal outer cylinder body in the radial direction and the axial direction, the metal outer cylinder body and the plastic inner cylinder body can be prevented from moving in the circumferential direction, and the plunger pump can stably and reliably move. Preferably, a metal skeleton is embedded in the plastic inner cylinder body. Preferably, the metal framework is in a ring cylinder shape, a plurality of holes are uniformly formed in the ring cylinder-shaped metal framework along the side wall of the ring cylinder, and the holes are used for anchoring and reinforcing the plastic when the ring cylinder-shaped metal framework is fixedly connected with the plastic layer. Preferably, the metal framework is completely wrapped in the plastic inner cylinder body. The plastic inner cylinder body is preferably made of Polyethylene (PE), polypropylene (PP), polyether-ether-ketone (PEEK), polytetrafluoroethylene or polyethylene with the molecular weight of 300-700 ten-thousandths, which has the anti-corrosion function and the wear-resistant function, and the plastic inner cylinder body is high in strength and good in self-lubricating performance, and can be flexibly selected according to the corrosiveness of a used medium. Preferably, the thickness of the layer of the solid material is set to be 2-20 mm according to the fluidity of the casting solid material. Preferably, the solid material layer is made of epoxy resin material or cement material filled with silicon carbide and/or quartz sand, and mineral particles such as silicon carbide and/or quartz sand are filled in the epoxy resin or cement for the purpose of increasing the strength of the solid material layer after solidification so as to firmly fix the plastic inner cylinder body of the lining on the metal outer cylinder body. Preferably, the silicon carbide and/or quartz sand filled in the epoxy resin material or the cement material accounts for 50 percent of the whole volume of the solid material layer. The beneficial effects of the utility model are as follows: A solid material layer is fixedly connected between the metal outer cylinder body and the plastic inner cylinder body, so that the plastic inner cylinder body is firmly fixed in an inner cavity of the metal outer cylinder body in the radial direction and the axial direction, the metal outer cylinder body and the plastic inner cylinder body can be prevented from moving in the circumferential direction, and the plunger pump can stably and reliably run; The plastic inner cylinder body is internally embedded with a metal framework, so that the strength of the plunger is enhanced, the connection strength of the plunger and the plunger pushing rod is enhanced, and a plurality of holes are formed in the metal framework, so that the plastic is anchored and the fixedly-connected strength is enhanced when the annular cylindrical metal framework is fixedly connected with the plastic layer. The plastic inner cylinder body has high strength and good self-lubricating performance. The plunger pump cylinder body designed by the utility model can be used for conveying clear liquid or slurry with strong corrosiveness. Drawings FIG. 1 is a schematic view of a rigid materi