Metal plunger barrel for plunger pump

Abstract

The metal plunger barrel for the plunger pump comprises a cylinder, end covers and a cladding layer, the cylinder and the end covers are made of metal materials, the middle cylinder is a seamless steel pipe, the end covers are arranged at the two ends of the cylinder respectively, the two end covers are connected with the cylinder to form the closed plunger barrel, chamfers are arranged on the outer circles of the two end covers, and the cladding layer is arranged on the outer circle of the cylinder. And a cladding layer is formed on the outer circle of the plunger barrel through laser cladding. The utility model has the advantages of simple structure, impact resistance, no looseness, easiness in processing and low cost.

Description

Technical Field

[0001] This utility model relates to the field of material plunger pumps, and more specifically to a metal plunger cylinder for a plunger pump. Background Technology

[0002] A material plunger pump is a positive displacement pump that uses a hydraulic cylinder to drive a plunger cylinder in reciprocating motion to pump materials such as mud and sewage. The plunger cylinder is the core component of the plunger pump, and it reciprocates within the pump body. When the plunger cylinder moves backward, a negative pressure is created in the pump chamber, drawing in liquid; when the plunger cylinder moves forward, a positive pressure is created in the pump chamber, expelling the liquid.

[0003] In existing applications, the plunger is made of ceramic, which has excellent corrosion resistance, wear resistance and surface smoothness. However, ceramic also has obvious disadvantages. Ceramic is brittle and easy to break. Its high hardness makes it difficult to process and is also costly. When the ceramic plunger is used in the plunger pump, it is made into a cylindrical shape. Metal end caps are set at both ends of the ceramic cylinder. A connecting rod in the middle of the ceramic cylinder connects the two metal end caps to form a sealed plunger cylinder. After long-term operation, the metal end caps at both ends are prone to loosening, causing structural failure or the plunger cylinder to break due to impact. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings mentioned above and to provide a metal plunger cylinder for a plunger pump.

[0005] A metal plunger cylinder for a plunger pump includes: a cylinder, end caps, and a cladding layer. The cylinder and end caps are both made of metal. The middle cylinder is a seamless steel pipe. End caps are respectively provided at both ends of the cylinder. The two end caps are connected to the cylinder to form a sealed plunger cylinder. The outer circles of the two end caps are chamfered. A hard and wear-resistant cladding layer is formed on the outer circle of the plunger cylinder by laser cladding.

[0006] Preferably, the two end caps are welded to both ends of the cylinder.

[0007] This utility model discloses a metal plunger cylinder for a plunger pump. It is made of metal, and the end cap is directly welded to the cylinder to form a sealed plunger cylinder, reducing the need for connecting rods required by the original ceramic plunger cylinder. This utility model has a simple structure, is impact-resistant, will not loosen, is easy to process, and has low cost. Attached Figure Description

[0008] Figure 1 This is a cross-sectional schematic diagram of a metal plunger cylinder for a plunger pump.

[0009] In the diagram: 1. Cylinder; 2. End cap; 3. Cladding layer. Detailed Implementation

[0010] To enhance understanding of this invention, a detailed description is provided below with reference to the accompanying drawings and specific embodiments. This description is intended to disclose the invention and enable those skilled in the art to implement it. The preferred embodiments described below are merely examples to explain the invention and are not intended to limit it; other obvious variations will be apparent to those skilled in the art.

[0011] like Figure 1 The aforementioned metal plunger cylinder for a plunger pump includes: a cylinder 1, end caps 2, and a cladding layer 3. The cylinder 1 and end caps 2 are both made of metal. The middle cylinder 1 is a seamless steel pipe. End caps 2 are respectively provided at both ends of the cylinder 1. The two end caps 2 are connected to the cylinder 1 to form a sealed plunger cylinder. The outer circles of the two end caps 2 are chamfered. A hard and wear-resistant cladding layer 3 is formed on the outer circle of the plunger cylinder by laser cladding.

[0012] Preferably, the two end caps 2 are welded to both ends of the cylinder 1 respectively.

[0013] This utility model discloses a metal plunger cylinder for a plunger pump. It is made of metal, and the end cap is directly connected to the cylinder to form a sealed plunger cylinder, reducing the need for connecting rods required by the original ceramic plunger cylinder. This utility model has a simple structure, is impact-resistant, will not loosen, is easy to process, and has low cost.

Claims

1. A metal plunger cylinder for a plunger pump, characterized in that, include: The cylinder, end caps, and cladding layer are all made of metal. The middle cylinder is a seamless steel pipe, and end caps are provided at both ends of the cylinder. The two end caps are connected to the cylinder to form a sealed plunger cylinder. The outer circles of the two end caps are chamfered, and a cladding layer is formed on the outer circle of the plunger cylinder by laser cladding.

2. The metal plunger cylinder for a plunger pump according to claim 1, characterized in that, The two end caps are welded to both ends of the cylinder, respectively.

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