CN2367769Y - Primary support-force controllable automatic liquid-filling gun - Google Patents

Abstract

The utility model relates to a primary support-force controllable automatic liquid injection gun, which is composed of a gun body, a liquid supplying pipe, an operation handle, a top rod, a lock sleeve, an overflow valve, and a liquid supplying valve. The utility model is characterized in that a removable overflow valve assembly is adopted by utilizing the principle of differential pressure; the utility model is provided with a liquid supplying one-way valve assembly of a movable valve cone; an operation handle with special structure is shared by liquid supply and pressure relief; a non-return valve is arranged in the liquid supplying pipe, so that the utility model provides convenience for needs of different conditions downhole, the overflow valve assembly can be replaced at any time, and the adjustment and display of support force and automatic pressure relief can be realized. The utility model has the advantages of compact and reasonable structure, beautiful appearance, small size, light weight, and simple and convenient operation.

Description

Controllable setting load automatic fluid injection gun

The utility model relates to controllable setting load automatic fluid injection gun, is particularly useful for the colliery hydraulic prop.

The setting load control of hydraulic prop is an on-the-spot difficult problem of not resolving for many years always, and the difference of mine condition, the setting load of required top board are also just different, and by the national standard requirement, for the supporting of soft top, setting load is not less than 5 tons; In resist slab supporting stubbornly, setting load is not less than 7 tons; The supporting of hard top, setting load are not less than 9 tons.And the fluid injection gun that use in present national colliery, still joined at random during from external introduction hydraulic prop in 1974, the rifle body structure is a single-phase valve, so far also there are not new substitute products, the problem of its existence is: 1) do not have pressure to discharge display unit, the workman feels unsure of, blindly fluid injection when the hydraulic prop fluid injection, can not make same row's support force of single-column uniformity; 2) do not have discharge mechanism, can only pound with hammer when taking arms, cause support force of single-column to descend, threaten roof safety.For this reason, engineers and technicians have done many improvements: patent announcement number is: CN87210120U discloses a kind of fluid injection gun of setting load controller; Notification number is: CN92063976U discloses-and the fluid injection gun of kind of setting load controller, they mainly are made up of liquid injecting mouth, feed tube, rifle body, spring assembly etc., though it is adjustable to satisfy setting load, but owing to be subjected to the influence of pumping plant pressure, the size of setting load remains artificially to be estimated, band presses the problem of unloading rifle still to exist.The patent No. is: 95239698X, a kind of setting load controllable liquid injection rifle is disclosed, overcome the deficiency of above-mentioned prior art, setting load is controlled, can realize not having pressing and take arms, but still have following shortcoming: 1) adopt the direct acting type overflow valve, need whole rifle pressure regulation, behind the pressure setting, can't further increase pressure again, can not satisfy the site work actual needs.2) complex structure, volume is big, heaviness, each controls feed flow and unloading with a handgrip, makes troubles to operation, applies at the scene and is obstructed.3) overflow valve of direct acting type exists: produce the intense impact vibration between steel ball and the valve seat, and quick abrasion, easy-to-leak liquid discharges during setting prop midway.

Problem in view of the prior art existence, the purpose of this utility model provides a kind of controllable setting load automatic fluid injection gun, it does not need whole rifle pressure regulation, the spill valve that only needs to adjust different pressures is loaded onto, the shared handgrip of voltage supply and release, thus realize that setting load is adjustable, demonstration, automatically unloading.

The utility model controllable setting load automatic fluid injection gun, mainly by the rifle body, feed pipe, the operator handle extends to the external push rod of rifle, lock sleeve, liquid injecting mouth is formed, but is mounted with pressure adjustment relief valve and the feed flow one way valve that is connected with the fluid injection chamber on the rifle body, but pressure adjustment relief valve is dismountable spill valve, the feed flow one way valve that is connected with feed pipe is the feed flow check valve assembly that movable valve cone is housed, and is provided with into discharge opeing one way valve between spill valve and the fluid injection chamber passage.

The utility model setting load controllable liquid injection rifle, dismountable spill valve includes clamping nut, pressure regulating screw, steel ball, pressure control spring, its outer ring is provided with separation sleeve, separation sleeve thread connection one piston bush, the valve seat that is located at the connecting port place is divided into former and later two chambeies with valve body, is provided with piston in the ante-chamber, upper cover of piston rod has back-moving spring, is provided with in this cavity to lead to the external spout hole of rifle; Back cavity has the groove that is communicated with the A chamber.The feed flow check valve assembly includes steel ball, compression spring, clamping nut extends in the external push rod of rifle and is connected with a drive link, and the moving valve tapered sleeve is on drive link, be provided with back-moving spring in it, movable valve cone outer ring is provided with separation sleeve, and the valve seat that is located at the valve cone top is divided into former and later two chambeies with valve body, and the ante-chamber valve cone radially has the hole that is communicated with the A chamber, push rod and drive link junction have the through hole with interface channel, and back cavity has the groove that is communicated with feed pipe.Advance to arrange one way valve and include steel ball, back-moving spring, clamping nut, valve seat is divided into two chambeies up and down with valve body, and push rod is located at down rifle, and it is external to extend to rifle, epicoele is communicated with spill valve, is communicated with admission chamber through the hole simultaneously, and cavity of resorption is provided with the passage that leads to the rifle external body.Operator is being hinged on the rifle body, and near upper ejector pin, below near lower push rod, the top and bottom of articulated joint are provided with the cambered surface that is fit near last lower push rod action above the articulated joint.Be provided with non retern valve in the feed pipe.

The utility model controllable setting load automatic fluid injection gun, utilize differential pressure principle, but adopt the spill valve of integral disassembly, assembly, the operator handle of the shared special tectonic of feed flow and release, be provided with movable valve cone in the feed flow check valve assembly, and in feed pipe, be provided with non retern valve, corresponding to the prior art in this field, have the needs of being convenient to the down-hole different condition, at any time change spill valve, can increase liquid filling pressure as required at any time, satisfy the work plane actual needs, after fluid injection finishes, the moment of unclamp operation handgrip still keeps liquid supply pressure in the rifle body, under the acting in conjunction of spring and rifle body internal pressure, promote operator advancing discharge opeing one way valve push rod jack-up, open into discharge opeing one way valve, the pressure liquid in the rifle body is discharged by valve channel, finishes automatically unloading, thereby when having guaranteed to take arms, the pressure in the rifle body is zero.This fluid injection gun compact conformation is reasonable, is easy to processing and manufacturing, good looking appearance, and volume is little, and is in light weight, and cost is low, and workman's convenience simple to operation proves that through field experiment effect is fine, is the regeneration product of old product, has broad application prospects.

Description of drawings:

Accompanying drawing is the section of structure of the utility model fluid injection gun.

Below in conjunction with accompanying drawing an embodiment of the present utility model is further described:

The utility model controllable setting load automatic fluid injection gun, it comprises rifle body 28, feed pipe 9, operator is 1, liquid injecting mouth B, lock sleeve 26, adjustable spill valve a is installed in the rifle body 28, its right-hand member is connected with liquid injecting mouth 27 chambeies, and left end 16 chambeies of spill valve are connected with the A chamber, and spill valve comprises: piston 22, piston bush 21, steel ball 17, valve seat 19, separation sleeve 18, pressure regulating screw 14, pressure control spring 15, clamping nut 13.On the rifle body 28, have the spout hole 20 that is communicated with the overflow valve valve pocket,, come the pressure size of set pressure control spring 15, thereby control the pressure in 27 chambeies by adjusting pressure regulating screw 14.Spill valve can integral body change, and the spill valve that configures different big or small pressure as spare part, can be changed at any time according to on-site actual situations.The feed flow check valve assembly c that is communicated with feed pipe 9 on the rifle body 28 comprises: extend to the push rod 2 of rifle external body, drive link 4, movable valve cone 5, separation sleeve 6, steel ball 7, compression spring 11, clamping nut 10, valve seat 12.Operator is hinged on 1 elasticity on the rifle body 28, move operator 1, drive push rod 2 and drive link 4, make it back down steel ball 7, lift off a seat 12, emulsion is through feed pipe 9, and feed flow is given the check valve assembly cavity: the one tunnel through 3 chambeies, 23 chambeies, 24 chambeies, after entering fluid injection chamber 27, by liquid injecting mouth B to the pillar feed flow; Simultaneously again left, to piston 22 termination feed flows (being the spill valve front end), in addition-route A chamber is to 16 chamber feed flows (being the spill valve rear end).When the pressure in fluid injection chamber 27 surpassed the pressure of overflow valve setting, emulsion was discharged through spout hole 20, showed to show that pillar has reached the setting load of setting, can take arms.What be provided with between spill valve a and fluid injection chamber 27 passages that machinery opens advances discharge opeing one way valve b, and when needs during to the hydraulic prop fluid injection, operator is 1, and the salient angle of handgrip 1 is left push rod 30, and the steel ball 25 in the one way valve resets; Unclamp operation handgrip 1, under the promotion of the reset force of push rod 2 and action of reset spring, the upper end salient angle of handgrip 1 drives push rod 30, backs down the steel ball 25 of one way valve, and the pressure in the rifle is discharged by 29 holes, and it is zero making the pressure in the rifle.When under special circumstances, reach setting load, after the demonstration overflow, the operator thinks when also needing supercharging, holds operator 1, compresses push rod 2, transmission push rod 4 is continued to left movement, and push rod 2 promotes valve cone 5, blocks the A chamber, make emulsion can not enter 16 chambeies, this moment, another road emulsion still can enter 27 chambeies by 3 chambeies, 23 chambeies, 24 chambeies, continued to the pillar feed flow, after fluid injection finishes, unclamp operation handgrip 1 recovers former function again.

Claims (10)

1. controllable setting load automatic fluid injection gun, mainly by rifle body (28), feed pipe (9), operator is (1), extend to the external push rod of rifle (2), lock sleeve (26), liquid injecting mouth (13) is formed, be mounted with on the rifle body (28) with fluid injection chamber (27) but the pressure adjustment relief valve and the feed flow one way valve that are connected, it is characterized in that: but described pressure adjustment relief valve is dismountable spill valve (a), the feed flow one way valve that is connected with feed pipe (9) is provided with into discharge opeing one way valve (b) for the feed flow check valve assembly (c) of movable valve cone (5) is housed between spill valve (a) and fluid injection chamber (27) passage.

2. controllable setting load automatic fluid injection gun according to claim 1, it is characterized in that: described dismountable spill valve (a) includes clamping nut (13), pressure regulating screw (14), steel ball (17), pressure control spring (15), its outer ring is provided with separation sleeve (18), separation sleeve (18) thread connection one piston bush (21), and the valve seat (19) that is located at the connecting port place is divided into former and later two chambeies with valve body.

3. according to claim 1,2 described controllable setting load automatic fluid injection guns, it is characterized in that: described former and later two chambeies, be provided with piston (22) in the ante-chamber, upper cover of piston rod has back-moving spring, is provided with in the cavity to lead to the outer spout hole (20) of rifle body (28); Back cavity (16) has the groove in connection (A) chamber.

4. controllable setting load automatic fluid injection gun according to claim 1, it is characterized in that: described feed flow check valve assembly (c) includes steel ball (7), compression spring (11), clamping nut (10), extend to and be connected with a drive link (4) in the external push rod of rifle (2), movable valve cone (5) is enclosed within on the drive link (4), is provided with back-moving spring in it, movable valve cone (5) outer ring is provided with separation sleeve (6), and the valve seat (12) that is located at the valve cone top is divided into former and later two chambeies with valve body.

5. according to claim 1,4 described controllable setting load automatic fluid injection guns, it is characterized in that: described former and later two chambeies, ante-chamber valve cone (5) radially has the hole that is communicated with (A) chamber, and push rod (2) and drive link (4) junction have the through hole (3) with interface channel (23); Back cavity has the groove that is communicated with feed pipe (9).

6. controllable setting load automatic fluid injection gun according to claim 1 is characterized in that: describedly advance discharge opeing one way valve (b) and include steel ball (25), back-moving spring, clamping nut, valve seat is divided into two chambeies up and down with valve body, and push rod (30) is located at cavity of resorption, and it is external to extend to rifle.

7. according to claim 1,6 described controllable setting load automatic fluid injection guns, it is characterized in that: described two chambeies up and down, epicoele is communicated with spill valve (a), and (24) are communicated with admission chamber (23) through the hole simultaneously; Cavity of resorption is provided with and leads to the outside passage (29) of rifle body (28).

8. controllable setting load automatic fluid injection gun according to claim 1 is characterized in that: described operator is hinged on (1) on the rifle body (28), above the articulated joint near upper ejector pin (30), below near lower push rod (2).

9. according to claim 1,8 described controllable setting load automatic fluid injection guns, it is characterized in that: described operator is provided with the cambered surface that is fit near last lower push rod action to (1) articulated joint top and bottom.

10. controllable setting load automatic fluid injection gun according to claim 1 is characterized in that: be provided with non retern valve (d) in the described feed pipe (9).