Sealing stuffing box for glue injection type plunger pump

Abstract

The invention discloses a sealing stuffing box for a glue injection type plunger pump, relating to the technical field of sealing stuffing boxes. The sealing stuffing box for the glue injection type plunger pump comprises a stuffing box main body and a gland which sheathe outside a plunger, a stuffing cavity is formed between the stuffing box main body and the plunger, a lower guide sleeve, a first packing, a supporting skeleton, a second packing and an upper guide sleeve are sequentially sheathed outside the plunger and arranged in the stuffing cavity, the gland is connected with the outer side of the stuffing box main body, the stuffing box main body, the lower guide sleeve, the first packing, the supporting skeleton, the second packing, the upper guide sleeve and the gland are respectively in sliding fit with the plunger, a glue injection cavity is formed at the periphery of the supporting skeleton, a glue injection hole is formed in the stuffing box main body, and the glue injection cavity is communicated with the outside by virtue of the glue injection hole. The sealing stuffing box for the glue injection type plunger pump has the advantages that the supporting skeleton is arranged for improving glue injection sealability, necessary sealing pressure is guaranteed by filling glue in time, wear of the packing is reduced, service lives of the packing and the plunger are greatly prolonged, production cost is reduced, and safety is improved.

Description

technical field [0001] The invention relates to the technical field of sealing stuffing boxes, in particular to a sealing stuffing box of a glue injection type plunger pump. Background technique [0002] In the normal production process of the oil field, it is necessary to provide high-pressure water continuously, and the plunger pump has become an essential equipment for production. In recent years, in order to reduce the cost of oil production, simply treated sewage is used as the water source, thereby reducing the service life of the plunger pump and increasing the maintenance cost of the plunger pump. The stuffing box of the traditional plunger pump is sealed with oil-resistant packing. During the production process, lubricating oil is continuously dripped to the friction pair of the plunger and the packing to ensure the seal. [0003] The currently commonly used plunger pump sealing stuffing box has the following disadvantages: 1. The main body of the packing, plunger,...

AI Technical Summary

Problems solved by technology

[0003] The currently commonly used plunger pump sealing stuffing box has the following disadvantages: 1. The main body of the packing, plunger, and stuffing box has a short service life; 2. There are potential safety hazards. The plug and the packing are locked, and the gland falls off, causing damage to the supporting automation equipment, and in severe cases, it will cause injury to the operator and inspector; 3. The replacement of the packing requires the entire set of equipment to be shut down, which is cumbersome and affects production.

4. The threaded buckle of the main body of the stuffing box is easy to corrode and wear

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