CN-224228848-U - Plunger pump

CN224228848UCN 224228848 UCN224228848 UCN 224228848UCN-224228848-U

Abstract

The utility model relates to a plunger pump which is horizontal or vertical and comprises a plunger pump cylinder body, an end cover, a plunger, a liquid inlet and/or a liquid outlet, a one-way check valve, a plunger push-pull rod, a plunger pump power device and an installation seat. The utility model has the advantages that the end cover and the plunger pump cylinder body are arranged into a split structure, the liquid inlet and/or the liquid outlet are/is arranged on the end cover and integrated with the end cover, so that the plastic layer in the plunger pump cylinder body is more convenient to manufacture and install, the plunger pump can also resist corrosion of hydrochloric acid and hydrofluoric acid media, when the front side and the rear side of the plunger pump cylinder body are respectively provided with the end cover with the liquid inlet, the upper end cover and the hydraulic cylinder for fastening and installing, and when the front side or the rear side of the plunger pump cylinder body is provided with the end cover with the liquid inlet and the liquid outlet, the purpose is to avoid arranging the liquid inlet and the liquid outlet on the plunger pump cylinder body, so that the manufacture and the processing of the anticorrosive layer of the lower end cover are facilitated.

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 (6)

1. The plunger pump is horizontal or vertical, and is characterized by comprising a plunger pump cylinder body, an end cover, a plunger, a liquid inlet and/or a liquid outlet, a one-way check valve, a plunger push-pull rod, a plunger pump power device and an installation seat, wherein the end cover is arranged on the front side and/or the rear side of the plunger pump cylinder body, the end cover and the plunger pump cylinder body are of a split structure, the plunger is arranged in the plunger pump cylinder body, the liquid inlet and/or the liquid outlet are arranged on the end cover and are integrated with the end cover, the one-way check valve is arranged at the liquid inlet and the liquid outlet, one end of the plunger push-pull rod is fixedly connected with the plunger, the other end of the plunger push-pull rod is fixedly connected with the plunger pump power device, the plunger pump is installed on the installation seat, and an inner side flow passing part, the liquid inlet and/or the liquid outlet of the end cover are/is coated with an anti-corrosion layer; The plunger pump cylinder body comprises a metal outer cylinder body, a metal framework and a plastic layer, wherein the metal framework is buried in the plastic layer, the plastic layer and the metal framework are integrally fixedly connected with the metal outer cylinder body, the inner side wall of the metal outer cylinder body is fixedly connected with the plastic layer, the metal framework is in a ring cylinder shape, and a plurality of holes are uniformly formed in the ring cylinder-shaped metal framework along the ring cylinder-shaped side wall.
2. The plunger pump of claim 1, wherein: When the plunger pump is a one-way acting plunger pump, an end cover with a liquid inlet and a liquid outlet is arranged at the front side or the rear side of the cylinder body of the plunger pump; When the plunger pump is a two-way acting plunger pump, an end cover with a liquid inlet is arranged at the front side and the rear side of the cylinder body of the plunger pump respectively; The anti-corrosion layer is made of one or more of plastic material, rubber material and metal material; the plunger push-pull rod is provided with a shaft sleeve made of ceramic materials; The plunger push-pull rod is of a two-section type, a connector is arranged on the plunger push-pull rod, the plunger is of a structure that a plastic layer is wrapped outside a metal substrate, the plunger push-pull rod penetrates through a liquid inlet and/or a liquid outlet on the end cover, and a push-pull rod seal is arranged at the contact part of the plunger push-pull rod and the liquid inlet and/or the liquid outlet.
3. The plunger pump is horizontal or vertical, and is characterized by comprising a plunger pump cylinder body, an end cover, a plunger, a liquid inlet and/or a liquid outlet, a one-way check valve, a plunger push-pull rod, a plunger pump power device and an installation seat, wherein the end cover is arranged on the front side and/or the rear side of the plunger pump cylinder body, the end cover and the plunger pump cylinder body are of a split structure, the plunger is arranged in the plunger pump cylinder body, the liquid inlet and/or the liquid outlet are arranged on the end cover and are integrated with the end cover, the one-way check valve is arranged at the liquid inlet and the liquid outlet, one end of the plunger push-pull rod is fixedly connected with the plunger, the other end of the plunger push-pull rod is fixedly connected with the plunger pump power device, the plunger pump is installed on the installation seat, and an inner side flow passing part, the liquid inlet and/or the liquid outlet of the end cover are/is coated with an anti-corrosion layer; The 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, and the solid material layer is fixedly connected with the metal outer cylinder body; the outside of the plastic inner cylinder body is provided with an annular groove, the inner wall of the metal outer cylinder body is provided with an annular bulge, and the solid material layer is positioned at a gap part between the annular groove and the annular bulge.
4. A plunger pump as claimed in claim 3, wherein: When the plunger pump is a one-way acting plunger pump, an end cover with a liquid inlet and a liquid outlet is arranged at the front side or the rear side of the cylinder body of the plunger pump; When the plunger pump is a two-way acting plunger pump, an end cover with a liquid inlet is arranged at the front side and the rear side of the cylinder body of the plunger pump respectively; The anti-corrosion layer is made of one or more of plastic material, rubber material and metal material; the plunger push-pull rod is provided with a shaft sleeve made of ceramic materials; The plunger push-pull rod is of a two-section type, a connector is arranged on the plunger push-pull rod, the plunger is of a structure that a plastic layer is wrapped outside a metal substrate, the plunger push-pull rod penetrates through a liquid inlet and/or a liquid outlet on the end cover, and a push-pull rod seal is arranged at the contact part of the plunger push-pull rod and the liquid inlet and/or the liquid outlet.
5. The plunger pump is horizontal or vertical, and is characterized by comprising a plunger pump cylinder body, an end cover, a plunger, a liquid inlet and/or a liquid outlet, a one-way check valve, a plunger push-pull rod, a plunger pump power device and an installation seat, wherein the end cover is arranged on the front side and/or the rear side of the plunger pump cylinder body, the end cover and the plunger pump cylinder body are of a split structure, the plunger is arranged in the plunger pump cylinder body, the liquid inlet and/or the liquid outlet are arranged on the end cover and are integrated with the end cover, the one-way check valve is arranged at the liquid inlet and the liquid outlet, one end of the plunger push-pull rod is fixedly connected with the plunger, the other end of the plunger push-pull rod is fixedly connected with the plunger pump power device, the plunger pump is installed on the installation seat, and an inner side flow passing part, the liquid inlet and/or the liquid outlet of the end cover are/is coated with an anti-corrosion layer; The plunger pump cylinder body comprises a metal outer cylinder body and a plastic inner cylinder body, wherein the plastic inner cylinder body is arranged in the metal outer cylinder body, one end part of the plastic inner cylinder body is provided with an inner groove, the other end part of the plastic inner cylinder body is provided with an outer flanging, a half fixing ring made of metal is arranged in the inner groove, two end parts of the metal outer cylinder body are arranged between the outer flanging and the half fixing ring, a limiting combination is formed by the outer flanging and the half fixing ring, and the metal outer cylinder body and the plastic inner cylinder body are fixedly connected through the limiting combination.
6. The plunger pump of claim 5, wherein: When the plunger pump is a one-way acting plunger pump, an end cover with a liquid inlet and a liquid outlet is arranged at the front side or the rear side of the cylinder body of the plunger pump; When the plunger pump is a two-way acting plunger pump, an end cover with a liquid inlet is arranged at the front side and the rear side of the cylinder body of the plunger pump respectively; The anti-corrosion layer is made of one or more of plastic material, rubber material and metal material; the plunger push-pull rod is provided with a shaft sleeve made of ceramic materials; The plunger push-pull rod is of a two-section type, a connector is arranged on the plunger push-pull rod, the plunger is of a structure that a plastic layer is wrapped outside a metal substrate, the plunger push-pull rod penetrates through a liquid inlet and/or a liquid outlet on the end cover, and a push-pull rod seal is arranged at the contact part of the plunger push-pull rod and the liquid inlet and/or the liquid outlet.

Description

Plunger pump Technical Field The utility model belongs to the technical field of plunger volumetric type slurry pumps, and particularly relates to a plunger pump. Background The plunger volumetric slurry pump is slurry conveying equipment commonly used in the fields of metallurgy, chemical industry and environmental protection, and has the advantage of high efficiency. The plunger volumetric type slurry pump has the defects that the working cylinder body is made of ceramic materials, and the corrosion resistance problem of the cylinder body is solved, but the materials of the liquid inlet and the liquid outlet of the pump cannot prevent the corrosion of hydrochloric acid and hydrofluoric acid media; If the liquid inlet and the liquid outlet of the plunger volumetric type slurry delivery pump are made of ceramic materials, the strength is insufficient and the processing and the manufacturing are difficult; Therefore, the commercial plunger volumetric slurry pump (plunger pump) cannot deliver a slurry containing hydrochloric acid and hydrofluoric acid components regardless of whether a metal material or a ceramic material is selected for the cylinder. Therefore, the commercial plunger volumetric slurry pump still has room for improvement to overcome the defect that the slurry containing hydrochloric acid and hydrofluoric acid components cannot be delivered. Disclosure of utility model The utility model aims to overcome the defects in the prior art and provides a plunger pump. The plunger pump is horizontal or vertical and comprises a plunger pump cylinder body, an end cover, a plunger, a liquid inlet and/or a liquid outlet, a one-way check valve, a plunger push-pull rod, a plunger pump power device and a mounting seat; the plunger pump cylinder comprises a metal outer cylinder body, a metal skeleton and a plastic layer, wherein the metal skeleton is embedded in the plastic layer, the plastic layer is fixedly connected with the metal outer cylinder body integrally with the metal skeleton, the metal skeleton is in a ring cylinder shape, a plurality of holes are uniformly formed in the ring cylinder shape metal skeleton along the side wall of the ring cylinder shape, and the holes are used for anchoring and reinforcing the fixedly connecting strength of the plastic when the ring cylinder shape metal skeleton is fixedly connected with the plastic layer. As preferable: When the plunger pump is a one-way acting plunger pump (the one-way acting plunger pump is preferable, because the structure vibrates little and the maintenance is convenient), an end cover with a liquid inlet and a liquid outlet is arranged on the front side or the rear side of the plunger pump cylinder body, and the purpose of arranging the liquid inlet and the liquid outlet on the end cover is to facilitate the manufacture and the installation of the plastic inner cylinder body; When the plunger pump is a plunger pump which generates suction and discharge effects in a bidirectional working and reciprocating manner, an end cover with a liquid inlet is respectively arranged at the front side and the rear side of the cylinder body of the plunger pump; The anti-corrosion layer is made of one material or a composite material of a plurality of materials of plastic materials, rubber materials and metal materials; the plunger push-pull rod is provided with a shaft sleeve made of ceramic material, and the shaft sleeve is used for preventing the plunger push-pull rod from being corroded by corrosive liquid in the working cavity; The plunger push-pull rod is of a two-section type, a connector is arranged on the plunger push-pull rod, the plunger is of a structure that a plastic layer is wrapped outside a metal substrate, after the metal substrate is sealed in the plastic layer, the plunger has the strength of steel and the corrosion resistance of plastic, the plunger push-pull rod passes through a liquid inlet and/or a liquid outlet on an end cover, a push-pull rod seal is arranged at the contact part of the plunger push-pull rod and the liquid inlet and/or the liquid outlet, and the push-pull rod seal is used for preventing air from entering a working cavity of a plunger pump and preventing slurry in the working cavity from leaking out when the pump is in operation. The other plunger pump is horizontal or vertical and comprises a plunger pump cylinder body, an end cover, a plunger, a liquid inlet and/or a liquid outlet, a one-way check valve, a plunger push-pull rod, a plunger pump power device and a mounting seat; the plunger pump cylinder 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 solid material layer is fixedly connected with the metal outer cylinder body, the solid material layer is used for fixing and limiting the axial position of the plastic inner cylinder body, the plastic inner cylinder body and the plasti