CN2121537U

CN2121537U - Valve controlled hydraulic gun

Info

Publication number: CN2121537U
Application number: CN 92211802
Authority: CN
Inventors: 宋志安; 潘立友; 王春秋
Original assignee: SHANDONG MINING COLLEGE
Current assignee: SHANDONG MINING COLLEGE
Priority date: 1992-05-09
Filing date: 1992-05-09
Publication date: 1992-11-11

Abstract

The utility model relates to a valve controlled type liquid filling gun for a coal mine to lift a single hydraulic supporting post. The valve controlled type liquid filling gun is mainly composed of a liquid filling pipe [1], a handle [3], a locking sleeve [2], a shell body [5], a top rod [6], a unidirectional valve seat [8], a steel ball [9], etc. The valve controlled type liquid filling gun is characterized in that a safe valve device [19] is arranged on the shell body [5]. The safe valve device [19] is mainly composed of a conical valve core [17], a press rod [15], a pressure adjusting spring [16] arranged between the press rod [15] and the conical valve core [17], a pressure adjusting screw [13], a covering cap [12], etc. A damping small hole [21] is processed in the shell body [5] at the front end of the conical valve core [17]. The utility model has the advantages of simple structure, high reliability and easy operation. The valve controlled type liquid filling gun can effectively realize the initial supporting force control of the single hydraulic supporting post.

Description

Valve controlled hydraulic gun

The utility model belongs to the valve-regulated fluid injection gun that colliery individual prop work plane rises hydraulic prop, is the improvement to former fluid injection gun.

At present,, can effectively control, a few class fluid injection guns such as band display, setting load controller and pressure meter successively occur for the setting load that makes hydraulic prop for the service efficiency of raising hydraulic prop and the control top effect of hydraulic prop work plane.The fluid injection gun of band display, under the dim condition of work in colliery, it is clear that the display high scale is difficult for identification; The fluid injection gun of band setting load controller is in self-locking state in the fluid injection process, do not reach the continuous fluid injection of setting load meeting; And be with manometric fluid injection gun, easily bumped and pound and influence the degree of accuracy or damage.

The purpose of this utility model is to design a kind of simple in structure, reliable operation, can realizes the valve-regulated fluid injection gun of hydraulic prop setting load control effectively.

The utility model mainly is made up of liquid injection pipe ［ 1 ］, lock sleeve ［ 2 ］, handgrip ［ 3 ］, housing ［ 5 ］, push rod ［ 6 ］, unidirectional valve seat ［ 8 ］, steel ball ［ 9 ］ etc., it is characterized in that being equipped with on fluid injection gun housing ［ 5 ］ relief valve device ［ 19 ］.

The utility model has the advantages that simple in structure, easy to process, easy operating, can control the setting load of hydraulic prop effectively, and reliable operation.

Description of drawings: accompanying drawing is a structure chart of the present utility model, 1-liquid injection pipe among the figure; The 2-lock sleeve; The 3-handgrip; The 4-elastic cylindrical pin; The 5-housing; The 6-push rod; The 7-separation sleeve; The unidirectional valve seat of 8-; The 9-steel ball; The 10-cylindrical spring; The 11-housing screw; The 12-block; The 13-pressure regulating screw; 14-O shape sealing ring; The 15-depression bar; The 16-pressure spring; The 17-taper valve core; The 18-feed tube; The 19-relief valve device; The 20-leak; The 21-damping hole.

Now the utility model is described in further detail in conjunction with the accompanying drawings, feature of the present utility model is to have added a relief valve device ［ 19 ］ in the upper right side of housing ［ 5 ］, and this device is made up of taper valve core ［ 17 ］, pressure spring ［ 16 ］, depression bar ［ 15 ］, pressure regulating screw ［ 13 ］, O-ring seals ［ 14 ］, block ［ 12 ］.During work, this utility model is inserted solid on the hydraulic prop triple-use valve, pull handgrip ［ 3 ］, the spring force that compression push rod ［ 6 ］ overcomes cylindrical spring ［ 10 ］ makes steel ball ［ 9 ］ break away from unidirectional valve seat ［ 8 ］, enter in the hydraulic prop post chamber, through space, the liquid injection pipe ［ 1 ］ of feed tube ［ 18 ］, steel ball ［ 9 ］ and unidirectional valve seat ［ 8 ］ and the fluid injection one way valve of opening triple-use valve from the high-pressure emulsion of work plane pumping plant the hydraulic prop liquid filling pole-raising; Simultaneously, highly pressurised liquid acts on the taper valve core ［ 17 ］ of relief valve device ［ 19 ］ by the preceding damping hole ［ 21 ］ of taper valve core ［ 17 ］, before work, according to the work plane condition, set up the opening pressure of relief valve device ［ 19 ］ required setting load value when being hydraulic prop work by regulating pressure regulating screw ［ 13 ］.When the chamber pressure of hydraulic prop reaches the setting load value, action of hydraulic force is compressed pressure spring ［ 16 ］ on taper valve core ［ 17 ］, taper valve core ［ 17 ］ is opened, liquid enters relief valve device ［ 19 ］ inner chamber (A), flows out by leak ［ 20 ］.In a single day the operator finds that leak ［ 20 ］ has liquid to flow out, and promptly unclamps handgrip ［ 3 ］, stops fluid injection.

Claims

1, a kind of colliery rises the valve-regulated fluid injection gun of hydraulic prop, mainly is made up of liquid injection pipe [1], lock sleeve [2], handgrip [3], housing [5], unidirectional valve seat [8], steel ball [9] etc., it is characterized in that a relief valve device [19] is arranged on housing [5].

2, valve-regulated fluid injection gun according to claim 1, it is characterized in that relief valve device ［ 19 ］ by taper valve core ［ 17 ］, depression bar ［ 15 ］, be contained in pressure spring ［ 16 ］, pressure regulating screw ［ 13 ］, block compositions such as ［ 12 ］ between depression bar ［ 15 ］ and the taper valve core ［ 17 ］.

3, according to claim 1 or the described valve-regulated fluid injection gun of claim 2, it is characterized in that being processed with damping hole ［ 21 ］, and on housing ［ 5 ］, be processed with the leak ［ 20 ］ that communicates with damping hole ［ 21 ］ and relief valve device ［ 19 ］ inner chamber A at taper valve core ［ 17 ］ front end.