CN2071726U

CN2071726U - Three-way two-adjustion stop valve

Info

Publication number: CN2071726U
Application number: CN 90208036
Authority: CN
Inventors: 史春发
Original assignee: Individual
Current assignee: Individual
Priority date: 1990-05-31
Filing date: 1990-05-31
Publication date: 1991-02-20

Abstract

The utility model discloses a three-way two-adjustion stop valve, which is a three-way valve used for adjusting the fluid flow of pipe-line systems. A valve cavity which is arranged in a valve case is divided into a front cavity and a back cavity which are connected by a cavity hole; a valve rod is arranged in the valve cavity; the valve case is provided with three valve holes. An adjusting hole for trial run is arranged on one side face which is symmetrical with an inlet valve port; the adjusting hole for trial run is blocked. A valve core is firmly connected with the front end of the valve rod whose back end is an adjusting sheet; the valve core is matched with a valve seat which is arranged in the outlet valve port of the front end of the valve case; the back end of the valve case is provided with a valve cover whose back is provided with a hand wheel. Users can rotate the valve rod by adjusting the hand wheel to adjust the closed degree between the valve core and the corresponded outlet valve port to adjust the distance between the adjusting sheet and the cavity hole, thus, the fluid flow can be adjusted to control room temperatures; the other outlet valve port can be controlled by administrators according to the operating condition of the pipe-line systems. The utility model has the advantages of simple structure and convenient installation.

Description

Three-way two-adjustion stop valve

The utility model relates to a kind of three-way valve of regulating pipeline system fluid flow.

" three-way valve " is the controlling device that is used for pipe-line system, with the flow of control fluid.Existing " three-way valve " generally adopts the cock-type structure, and cock type three-way valve is divided into two kinds of hollow cock and solid cocks.Obviously, the cock of hollow cock three-way valve is hollow, and there is a small opening its bottom, two holes is arranged as valve port on the valve body.Though it can be regulated pipe-line system within the specific limits, two unsurmountable shortcomings are arranged: during the valve full cut-off, its bypass valve port can open entirely, and when valve opened entirely, its bypass valve port promptly was closed.This moment, the media flow of bypass duct also was cut off.After desiring to think that primary path opens entirely, and bypass also need keep a considerable amount of MEDIA FLOW to cross and can't accomplish; During valve closing, can not guarantee reliable leakproofness, like this, when pipeline or equipment break down and when needing maintenance, not have and cut off medium and run the effect of leaking.

Another kind is solid plug valve.Three through holes are arranged in solid cock, and the valve body bottom do not have small opening, bypass opened entirely when this solid plug valve also was the primary path full cut-off, and vice versa.When the primary path rate-of flow is adjusted to desirable value, make bypass also need keep a considerable amount of MEDIA FLOW to cross also and can't realize.

From the above mentioned, existing " three-way valve " makes year energy fluid flow in pipe-line system uncontrollable, thereby can not rationally use the entrained energy of fluid, both wastes energy, and also often do not reach user's satisfaction.

The purpose of this utility model provides a kind ofly both can be regulated by the user, the two three-way cut-off valves of transferring that can control by run unit again so that rationally in the controlling plumbing fixtures system carry can flowing medium flow, reach user's satisfaction.

For this reason, the structure taked of the utility model is: it is made up of valve casing (1), valve rod (2), valve gap (3), spool (4), valve seat (5), adjustment sheet (6) and adjusting handle (7).Valve casing wherein (1) inside is the valve pocket of hollow, and this valve pocket divides ante-chamber (8) and back cavity (9) two-part, and front/back cavity (8) (9) is communicated with by lumen pore (10) therebetween.At valve casing (1) front end a valve port (11) with its lateral vertical is arranged, valve port (11) communicates with valve pocket, and flowing medium from then on valve port (11) flows in the valve pocket.In valve rod (2) is axially packed valve pocket from valve casing (1) rearward end into along it, and near the valve port fixed spools of (11) one ends (4).Valve casing (1) front end, axial along valve rod (2), axially be 90 ° with above-mentioned valve port (11) and located a valve port (12), this valve port (12) communicates with valve pocket, valve port (12) with the relative position of spool (4), be pressed into one with the supporting valve seat (5) of spool (4).In valve casing (1) side, the position perpendicular with the axial plane that constitutes of described two valve ports (11) (12) also has a valve port (13), and this valve port (13) also communicates with valve pocket.In addition, in pack into the rear end of valve rod (2) of valve casing (1), the valve gap (3) of hollow is installed, valve gap (3) enters in the valve pocket from valve casing (1) rear port, its outside thread is that spiral shell cooperates with pairing valve pocket internal thread, and valve gap (3) cavity internal thread is that spiral cooperates with the valve rod that is positioned at it (2) outside thread then, valve gap (3) with cavity that valve rod (2) spiral cooperates in, also have ring screw platform (19), in valve gap (3), screw out to prevent valve rod (2).The annular ear end face of valve casing (1) is sealed and matched by flexible gaskets (14) with the corresponding annular connection part of valve gap (3).An adjusting handle (7) is equipped with in valve gap (3) rear end, and its connection space is filled stuffing box (15), so that valve pocket becomes sealing state.In the ante-chamber (8) of valve casing (1), be positioned at spool (4) back on the valve rod (2) one adjustment sheet (6) is housed.Rotate back and forth adjusting handle (7), the pore volume between the valve seat (5) that one side regulating valve stem (2) front end spool (4) matches with it can make adjustment sheet (6) axially move around along it with valve rod (2) on the one hand.When the complete closure of spool (4) and valve seat (5), flowing medium then can not flow out from valve port (2) fully, at this moment the distance H between adjustment sheet (6) and the lumen pore (10) ₁Reach maximum value.Like this, flowing medium then all flows into ante-chamber (8) from valve port (11), enters back cavity (9) through lumen pore (10), flows out from valve port (13) again.When adjustment sheet (6) moved to the position of lumen pore (10), the distance between spool (4) and the valve seat (5) is maximum, and was obvious, at this moment H ₁=0.In addition, with also have a test run adjustment hole (16) on symmetrical valve casing (1) side of valve port (11), be equipped with one in it and stop up (17), the annular contact surface that this obstruction (17) is connected with test run adjustment hole (16) is used flexible gaskets (18) and is sealed and matched.

Above-mentioned H ₁Regulation range when value reaches test run before the utility model is installed can ratio method such as just use to mix up by floor, and promptly floor is high more, H ₁Be worth big more, big more through by-pass line, and floor is low more, H to the straight-through heating load of lower floor ₁Be worth more little, until zero layer H ₁Value is zero.Because adjustment sheet (6) is not a whole sealing status with lumen pore (10), and some spaces are arranged, so H ₁When being zero, also there is micro-hot fluid to pass through bypass tube.As before installation to H ₁Value is regulated after each floor gap temperature of test run reaches designing requirement, thinks that promptly test run is qualified.As the room temperature that indivedual floors occur do not reach designing requirement as yet, and can close heating riser this moment, will stop up (17) and screw off, and test run adjustment hole (16) is opened, and turn adjustment sheet (6) is to H ₁Value is revised.

The utlity model has following advantage:

Be scene 2 formula structure into, two outlets, i.e. valve port (12) and valve port (13), but equal independent regulation, being adjusted in the valve of an outlet carried out, regulate in promptly, by install, the manager grasps so that the operating conditions of controlling plumbing fixtures system, the user can't disturb.Being adjusted in outside the valve of another outlet undertaken by handwheel, and promptly outer the adjusting grasped according to the room temperature needs by the user, can all open and close valve, and be minimum to the operating mode influence of pipe-line system.

One valve is dual-purpose, both can carry out Flow-rate adjustment to two outlets of valve, can be used as the use that ends of a valve port again.

Simple in structure, installation, easy to adjust, intensity is reliable, and good leak tightness is slightly higher than existing three-way valve cost, but can replace the effect of two or more existing three-way valve.

Because energy flowing medium flow is carried in control rationally, has therefore saved the energy.

The utility model can be widely used in all industry, agricultural, chemical industry, national defence, civil pipeline systems that has bypass or crossing pipeline to need bidirectional modulation control.

Fig. 1 is the utility model structural representation.

Fig. 2 is used for the scheme of installation of pipe-line system for the utility model.

Claims

1, the two stop valves of transferring of a kind of threeway, it is characterized in that, be by valve casing (1), valve rod (2), valve gap (3), spool (4), valve seat (5), adjustment sheet (6) and adjusting handle (7) are formed, be the valve pocket of hollow in the valve casing (1), divide ante-chamber (8) and back cavity (9), before, back cavity (8), (9) then be communicated with by lumen pore (10), have one with its lateral vertical at valve casing (1) front end, and the valve port that communicates with valve pocket (11), in valve rod (2) is axially packed valve pocket from valve casing (1) rearward end into along it, and near the valve port fixed spools of (11) one ends (4), valve casing (1) front end, axial along valve rod (2), axially be 90 ° with above-mentioned valve port (11) and located a valve port (12), this valve port (12) communicates with valve pocket, in the valve port (12) with the relative position of spool (4), be pressed into one with the supporting valve seat (5) of spool (4), in valve casing (1) side, with described two valve ports (11), (12) perpendicular position, the axial plane that constitutes also has a valve port (13), this valve port (13) also communicates with valve pocket, in addition, in pack into the rear end of valve rod (2) of valve casing (1), the valve gap (3) of hollow is installed, valve gap (3) enters in the valve pocket from valve casing (1) rear port, its outside thread is that spiral cooperates with pairing valve pocket internal thread, valve gap (3) cavity internal thread then with its in valve rod (2) outside thread be that spiral cooperates, valve gap (3) with cavity that valve rod (2) spiral cooperates in, also have ring screw platform (19), annular ear end face of valve casing (1) and the corresponding annular connection part of valve gap (3) are by flexible gaskets (14) seal closure, valve gap (3) rearward end is equipped with adjusting handle (7), its connection space stuffing box (15) of packing into, in the ante-chamber (8) of valve casing (1), be positioned at spool (4) back on the valve rod (2) one adjustment sheet (6) is housed, rotate back and forth adjusting handle (7), adjustment sheet (6) is axially moved around along it with valve rod (2), valve casing (1) side symmetrical with valve port (11) also has a test run adjustment hole (16), obstruction (17) is housed in it, and the annular contact surface that this obstruction (17) is connected with test run adjustment hole (16) is sealed and matched with flexible gaskets (18).