CN-224228851-U - Plunger pump cylinder

CN224228851UCN 224228851 UCN224228851 UCN 224228851UCN-224228851-U

Abstract

The utility model relates to a plunger pump cylinder body, which comprises a metal outer cylinder body, a metal framework and a plastic layer, wherein the metal framework is embedded in the plastic layer, the plastic layer and the metal framework are integrally fixedly connected with the metal outer cylinder body, and the plastic layer is fixedly connected with the inner side wall of the metal outer cylinder body. The plunger pump cylinder has the beneficial effects that the metal framework can increase the mechanical strength of the plastic layer in the metal outer cylinder body, so that the plastic layer cannot deform, fall and crack, the quality of the plunger pump is improved, the plunger pump cylinder body has good negative pressure resistance, positive pressure resistance, cracking resistance and deformation resistance, the plastic layer has good self-lubricating function, the problem that friction between the plunger pump cylinder body and a plunger is easy to wear is solved, and the use temperature of the plunger pump can be increased by 20-30 ℃ when the plunger pump cylinder body is used (namely, the use temperature of the plunger pump is increased to 90-100 ℃).

Inventors

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

Assignees

宜兴市宙斯泵业有限公司

Dates

Publication Date: 20260512
Application Date: 20250513

Claims (8)

1. A plunger pump cylinder body is characterized by comprising a metal outer cylinder body, a metal framework and a plastic layer, wherein the metal framework is embedded in the plastic layer, the plastic layer and the metal framework are integrally fixedly connected with the metal outer cylinder body, and the inner side wall of the metal outer cylinder body is fixedly connected with the plastic layer.
2. The plunger pump cylinder as set forth in claim 1, wherein inner side walls of said metal outer cylinder are welded to upper and lower end portions of said metal skeleton.
3. The plunger pump cylinder as set forth in claim 1, wherein said metal skeleton is in the shape of a ring, and said ring is provided with holes uniformly along the side wall of the ring.
4. The plunger pump cylinder as set forth in claim 3, wherein the aperture diameter of the eyelet is 10-30 mm.
5. The plunger pump cylinder as set forth in claim 3, wherein said metal skeleton is entirely encased in a plastic layer.
6. The plunger pump cylinder as set forth in claim 3, wherein said metal skeleton is partially encased in a plastic layer.
7. The plunger pump cylinder as set forth in claim 1, wherein the metal outer cylinder is fixedly connected to upper and lower side covers of said plunger pump cylinder.
8. The plunger pump cylinder as set forth in claim 1, wherein said plastic layer is 300-700 ppm polyethylene.

Description

Plunger pump cylinder 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 The existing plunger volumetric type slurry pump is extremely easy to wear and damage, so that the working cylinder body of the plunger volumetric type slurry pump needs to be made of wear-resistant materials, however, the cylinder body of the plunger volumetric type slurry pump which is made of or is used by hard alloy is not corrosion-resistant, and particularly, the cylinder body of the plunger volumetric type slurry pump is not corrosion-resistant to chlorine ion-containing slurry. In order to overcome the defects, the working cylinder body of the plunger pump is manufactured by adopting ceramic materials, and although the problem that the cylinder body is corroded by strong corrosive media such as hydrochloric acid can be effectively solved, the working cylinder body of the ceramic materials has poor anti-impact cracking performance, and the ceramic cylinder body (ceramic steel body with the diameter of more than 300 mm) is easy to be cracked due to the vibration force generated by high-low pressure fluid pressure conversion when the plunger pump works. Therefore, the working cylinder body made of ceramic materials is difficult to adapt to the high-flow plunger pump, and the requirements of the high-flow plunger pump in large-scale chemical engineering and smelting engineering cannot be met. In order to produce the high-flow anti-corrosion plunger pump, a lining plastic process is adopted by a person skilled in the art to manufacture a lining plastic type plunger pump cylinder body, but the produced lining plastic plunger pump cylinder body still has the defect that a lining plastic layer can shrink and fall off when the negative pressure is high, and the use temperature of the existing plunger volumetric type plunger pump is mostly 60-70 ℃ and cannot bear higher working condition temperature. Therefore, it is important to design a high-strength plunger pump cylinder body with a lining layer, which is firm, not easy to deform and fall off, wear-resistant, corrosion-resistant and impact-resistant. 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 metal framework and a plastic layer, wherein the metal framework is embedded in the plastic layer, the plastic layer is fixedly connected with the metal outer cylinder body integrally, and the plastic layer is fixedly connected with the inner side wall of the metal outer cylinder body. Preferably, the upper and lower ends of the metal skeleton are welded to the inner side wall of the metal outer cylinder body, so that the manufacturing is convenient. The metal skeleton is ring-shaped, and the side wall of the ring-shaped cylinder is uniformly provided with a plurality of holes, the holes are used for anchoring and strengthening the fixedly-connecting strength of the plastic when the ring-shaped cylinder is fixedly connected with the plastic layer, and the quantity and the arrangement shape of the holes are used for achieving the aim of anchoring the plastic. Preferably, the aperture diameter of the eyelet is 10-30 mm. Preferably, the metal framework is completely wrapped in the plastic layer. Preferably, the metal skeleton is partially wrapped in the plastic layer. As preferable: the metal outer cylinder body is fixedly connected with the upper side cover and the lower side cover of the plunger pump cylinder body, and the metal outer cylinder body is also used for bearing the fluid pressure of the pump cavity. The plastic layer is preferably made of polyethylene with the molecular weight of 300-700 ten-thousandths. The beneficial effects of the utility model are as follows: The metal framework designed by the utility model can increase the mechanical strength of the plastic layer in the metal outer cylinder body, so that the plastic layer cannot deform, fall off and crack, the defects that the plastic lining layer of the cylinder body of the plunger pump can be deformed by high negative pressure suction of the plunger pump and the lining is torn and deformed and fall off in the prior art are overcome, the quality of the plunger pump is improved, and the cylinder body of the plunger pump has good negative pressure resistance, positive pressure resistance, cracking resistance and deformation resistance. The plastic layer has a good self-lubricating function, solves the problem that the plunger pump cylinder body and the plunger are easy to wear due to friction, can be used for manufacturing the plunger pump cylinder body with the diameter larger than 300mm, and overcomes the defects that the cylinder body of the plunger volumetric slurry pump selected or applied by hard alloy in the prior art is not corrosion-resistan