RU64253U1 - PNEUMATIC DEVICE - Google Patents

Abstract

The utility model “Pneumatic impact device” refers to a pneumatic impact, emergency drilling tool, which is used in the mining industry for drilling blast holes at various drilling rigs using submersible pneumatic hammers using compressed air energy. When driving wells in this way, emergency situations often occur when the drill is stuck in the well. In cases where the drilling rig does not have enough effort to extract the stuck drill string from the well, a special pneumatic impact device using compressed air energy is used. This device is attached on the thread to the end of the stuck rod stand, and when compressed air is supplied, the device’s percussion mechanism starts up, transmitting continuous blows to the rod stand. Under the action of continuous impacts, a stuck tool is removed from the well. The proposed version of the new utility model differs from the analogue in that the new design is more convenient and safe. All moving elements are inside the structure, and the necessary movements and impacts occur inside the cylinder. Air exhaust can be diverted in any direction and at any distance, bypassing the working area.

Description

The development relates to a pneumatic percussion drilling tool for drilling blastholes using submersible hammers and is used in the mining industry to extract the drill stub stuck in the well using a pneumatic percussion device.

Various pneumatic impact devices are known, including a pneumatic cylinder and a piston, used to eliminate the consequences of picking up various drilling tools in the well and removing it from the well.

The design of the closest analogue consists in the fact that the piston has two rods, one end of the rod is equipped with a coupling for connecting to the air line and the rod set, the second end of the rod is equipped with an anvil, and the cylinder is movable and performs the function of an impactor.

Figure 1. (Copyright certificate No. 385031).

The disadvantage of the design is that during operation of the device, the cylinder relative to the rod and the anvil is made movable. The space between the anvil and the cylinder is not protected and during operation can injure service personnel, as emergency work is carried out in a poorly lit limited space of the mines, and the exhaust air is released from the pneumatic cylinder to the workplace.

The purpose of the utility model is to create a design that improves safety, ease of use.

The inventive utility model, a pneumatic impact device, solves the problem of eliminating the disadvantages of the analogue and differs in that it is a closed type design where all movements and blows occur inside the cylinder, and air exhaust can be diverted to the idle zone and at any distance.

The essence of the utility model is illustrated by the drawing, where Fig. 2 shows a general view of a pneumatic impact device consisting of: cylinder 1, hammer 2, anvil 3, adapter 4, sleeve 5, distribution pipe 6, exhaust pipe 7, cover 8, fitting 9, transition 10 .

Compressed air through the adapter 4, the tube 6, the channels of the hammer, alternately enters the chambers of forward stroke A and reverse B. At the end of the forward stroke, the hammer strikes the anvil 3, and under the influence of continuous impulses of blows, it allows to extract the stuck stave from the well.

Sources of information: 1. Copyright certificate No. 385031

Claims (1)

A pneumatic shock device consisting of a cylinder, a piston-hammer, a distribution tube and anvil, characterized in that the hammer mechanism, consisting of a piston-hammer and anvil, is located inside the cylinder, is safe, and the exhaust air, through the exhaust hole in the anvil, can be discharged into not a working area.