CN201110454Y

CN201110454Y - Restrictor

Info

Publication number: CN201110454Y
Application number: CN 200720041619
Authority: CN
Inventors: 张庆飞; 赵宏松
Original assignee: Yangzhou Forging Machine Tool Co Ltd
Current assignee: Yangzhou Forging Machine Tool Co Ltd
Priority date: 2007-11-26
Filing date: 2007-11-26
Publication date: 2008-09-03
Anticipated expiration: 2017-11-26

Abstract

The utility model discloses a choke belonging to the press lubrication system field, which comprises a case which is provided with an outer screw at two ends, wherein the case is hollow, two ends of the hollow part are provided with an inner screw, a chock piston is arranged in the case for sealing between the excircle surface and the case, two ends of the choke piston are provided with a joint for fixing the choke piston, the joint is connected with the inner screw of the case, the joint is hollow with one end closed, the closure end of the joint is provided with a screwdriver groove, the lateral of the joint is provided with an oil inlet penetrating the joint lateral, the center of the choke piston is provided with an axial through-hole which is plugged with choke bar whose two ends extend out of the through-hole, the choke bar is matched with the gap among the through-holes, the extension end of the choke bar is extended in the cavity of two joints from the opening of two joints. The choke realizes flow control through the gap between the choke bar and the choke piston, solves the problem of instable flow control of the choke in the prior technique, which can be applied in the press lubrication system.

Description

A kind of flow controller

Technical field

The utility model relates to a kind of lubrication system of press machine, particularly the limting mechanism of flow of lubrication in the press machine lubrication system.

Background technique

In the lubrication system of existing press machine, generally control the size of lubricants capacity by throttle valve, this throttle valve includes valve seat and spool, the spool end becomes needle-like, is provided with the taper valve face suitable with the spool end in the valve seat, adjusts the flow of oil by the gap of regulating spool and taper valve face, the mode of this control flow rate has the shortcoming of two aspects, the one, the flow control instability, suddenly big or suddenly small, be difficult to accurately obtain required lubricants capacity; The 2nd, when lubricating oil pressure was big, the unsettled shortcoming of the flow control of throttle valve was completely exposed especially, had had a strong impact on performance, precision and the reliability of press machine.

The model utility content:

The purpose of this utility model provides a kind of a kind of flow controller that can overcome above-mentioned defective, makes that flow of lubrication in the lubrication system of press machine is stable, to be fit to the oil pressure scope wide.

The purpose of this utility model is achieved in that a kind of flow controller, comprise that two ends are provided with externally threaded shell, described shell hollow, the two ends of hollow space are respectively equipped with internal thread, be provided with between outer round surface and the shell orifice plug of sealing mutually in the shell, the orifice plug two ends are respectively equipped with the joint of fixed restriction plug, described joint is connected with the internal thread of shell, joint hollow and end sealing, the closed end of joint is provided with driver flutes, the side of joint is provided with the oil inlet and outlet of penetrator sidewall, the orifice plug center is provided with an axial hole, be plugged with two ends in the through hole and stretch out the outer throttle bar of through hole, Spielpassung between throttle bar and the through hole, the external part of throttle bar is respectively from the opening end of two joints extend into cavity in two joints.

During the utility model work, outside thread by two ends connects on the oil circuit of press machine lubrication system, when an end produces oil pressure, lubricant oil is from the oil inlet and outlet of an end enters cavity in the joint, enter into the cavity in the other end joint again along the gap between throttle bar and the orifice plug, and then the oil inlet and outlet from corresponding the other end joint leaves and enters the required lubricated parts, because between throttle bar and the orifice plug is Spielpassung, make lubricant oil to pass through, thereby realize flow control from gap between the two; Because lubricant oil itself has certain viscosity, behind friction loss through a segment distance, regardless of import oil pressure size, its outlet oil pressure basically identical, thereby flow rate of lubricating oil can not be subjected to the influence of input pressure size; The adjusting of flow can be achieved by the throttle bar of changing different-diameter, during replacing, backs out the joint at two ends with screw-driver through driver flutes, pushes throttle bar and can make it to take out from the other end; The utility model is applied on the press machine, has stability of flow, is fit to oil pressure scope advantage wide and easy to use.

Description of drawings

Fig. 1 is a structural representation of the present utility model.

Wherein: 1 joint, 2 shells, 3 orifice plugs, 4 throttle bars, 5 oil inlet and outlets, 6 driver flutes.

Embodiment

As figure, a kind of flow controller, comprise that mainly two ends are provided with externally threaded shell 2, described shell 2 hollows, the two ends of hollow space are respectively equipped with internal thread, be provided with between outer round surface and the shell 2 orifice plug 3 of sealing mutually in the shell 2, orifice plug 3 two ends are respectively equipped with the joint 1 of fixed restriction plug 3, described joint 1 is connected with the internal thread of shell 2, joint 1 hollow and end sealing, the closed end of joint 1 is provided with driver flutes 6, the side of joint 1 is provided with the oil inlet and outlet 5 of penetrator 1 sidewall, and orifice plug 3 centers are provided with an axial hole, and the through hole sky is plugged with two ends and stretches out the outer throttle bar 4 of through hole, Spielpassung between throttle bar 4 and the through hole, the external part of throttle bar 4 are respectively the cavity in the opening end of two joints 1 extend into two joints 1.

During work, outside thread by shell 2 two ends connects on the oil circuit of press machine lubrication system, when an end produces oil pressure, the cavity of lubricant oil in the oil inlet and outlet 5 of an end enters joint 1, enter into the cavity in the other end joint 1 again along the gap between throttle bar 4 and the orifice plug 3, and then the oil inlet and outlet 5 from corresponding the other end joint 1 leaves and enters the required lubricated parts, because between throttle bar 4 and the orifice plug 3 is Spielpassung, make lubricant oil to pass through, thereby realize flow control from gap between the two; Because lubricant oil itself has certain viscosity, behind friction loss through a segment distance, import oil pressure size as what export the oil pressure basically identical no matter, thereby flow rate of lubricating oil can not be subjected to the influence of input pressure size; The adjusting of flow can be achieved by the throttle bar 4 of changing different-diameter, during replacing, backs out the joint 1 at two ends with screw-driver through driver flutes 6, pushes throttle bar 4 and can make it to take out from the other end.

The utility model is not limited to the foregoing description, allly belongs to known simple deformation of those skilled in that art and obviously conversion, for example with the driver flutes cancellation, and at joint end arranged outside hexagon head, adopts socket wrench dismounting joint; Perhaps that shell is outer male connection makes female adapter into, or makes flanged joint etc. into; Above-mentioned simple deformation and obvious conversion are all in protection domain of the present utility model.

Claims

1, a kind of flow controller, it is characterized in that: comprise that two ends are provided with externally threaded shell, described shell hollow, the two ends of hollow space are respectively equipped with internal thread, be provided with between outer round surface and the shell orifice plug of sealing mutually in the shell, the orifice plug two ends are respectively equipped with the joint of fixed restriction plug, described joint is connected with the internal thread of shell, joint hollow and end sealing, the closed end of joint is provided with driver flutes, the side of joint is provided with the oil inlet and outlet of penetrator sidewall, the orifice plug center is provided with an axial hole, be plugged with one or two end in the through hole and stretch out the outer throttle bar of through hole, Spielpassung between throttle bar and the through hole, the external part of throttle bar is respectively from the opening end of two joints extend into cavity in two joints.