Combined high-pressure pneumatic control valve of down-the-hole drill

A technology of pneumatic control valve and down-the-hole drilling rig, which is applied in valve details, valve device, mechanical equipment, etc., can solve the problems of low working reliability of pneumatic control valve, laborious operation handle, stuck valve core, etc., and achieves novel structure. , labor-saving operation, flexible combination effect

Inactive Publication Date: 2016-07-13
黄石市超力工程塑料研究所
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The pneumatic control valve of the existing down-the-hole drilling rig uses the manual control handle to drive the valve core to rotate. Since there is a radial ventilation groove on the valve core, when the ventilation groove of the valve core is turned to the corresponding position, The air circuit can be connected or disconnected. Since this pneumatic control valve controls the pressure gas, when the pressure gas acts on the radial ventilation groove on the valve core, the phenomenon of "stuck" of the valve core often occurs. It will directly lead to more labor when operating the handle. Sometimes, the handle has to be pulled with the help of external force (such as a hammer). Moreover, when this pneumatic control valve is working, sometimes there is gas leakage, so the work of this pneumatic control valve low reliability

Method used

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  • Combined high-pressure pneumatic control valve of down-the-hole drill
  • Combined high-pressure pneumatic control valve of down-the-hole drill
  • Combined high-pressure pneumatic control valve of down-the-hole drill

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Embodiment Construction

[0017] see Figure 1 to Figure 11 , the present invention includes a pneumatic control valve I1, a pneumatic control valve II2 and several connecting screws 3, the pneumatic control valve II2 is connected with the pneumatic control valve I1 through the connecting screws 3, and also includes a plugging screw 3 and an O-ring 4, so The pneumatic control valve I1 includes a valve body I11, a valve core I12, a handle I17, a rotating shaft I18, a pin I19, an elastic positioning device 114 and a screw I20, and the valve body I11 includes a lower cover plate I111, a valve body shell I112 and an upper cover plate I113, the elastic positioning device 114 includes a compression spring 1142 and two steel balls 1141 symmetrically arranged at the two ends of the compression spring 1142, and the valve body shell I112 is provided with an arc-shaped ventilation groove 13, an air passage connecting threaded hole 14, and an air outlet 15 and air inlet 16, and two bosses I1121 with threaded holes...

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Abstract

The invention discloses a combined high-pressure pneumatic control valve of a down-the-hole drill. The high-pressure pneumatic control valve comprises a pneumatic control valve I (1), a pneumatic control valve II (2), and a plurality of connecting screws (3). The pneumatic control valve II (2) is connected with the pneumatic control valve I (1) through the connecting screws (3). The high-pressure pneumatic control valve is characterized by also comprising a blocking screw (3) and an O-shaped sealing ring (4). The blocking screw (3) is installed in the blocking threaded hole (29) of the valve body II (21) of the pneumatic control valve II (2). The O-shaped sealing ring (4) is installed in the inlet threaded hole (24) of the valve body II (21) of the pneumatic control valve II (2). The combined high-pressure pneumatic control valve is novel in structure, flexible in combination, laborsaving in operation, high in working reliability, and long in service life.

Description

technical field [0001] The invention relates to pneumatic rock drilling equipment, in particular to a combined high-pressure pneumatic control valve for down-the-hole drilling rigs. Background technique [0002] The pneumatic control valve of the existing down-the-hole drilling rig uses the manual control handle to drive the valve core to rotate. Since there is a radial ventilation groove on the valve core, when the ventilation groove of the valve core is turned to the corresponding position, The air circuit can be connected or disconnected. Since this pneumatic control valve controls the pressure gas, when the pressure gas acts on the radial ventilation groove on the valve core, the phenomenon of "stuck" of the valve core often occurs. It will directly lead to more labor when operating the handle. Sometimes, the handle has to be pulled with the help of external force (such as a hammer). Moreover, when this pneumatic control valve is working, sometimes there is gas leakage, ...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): F16K31/60F16K31/12
Inventor饶建新
Owner黄石市超力工程塑料研究所