CN2315389Y

CN2315389Y - Proportional pressure reducing valve

Info

Publication number: CN2315389Y
Application number: CN 97250789
Authority: CN
Inventors: 马明亮; 赵丙祥; 孟庆海
Original assignee: XINGSHUI VALVE FACTORY CANGZHOU CITY
Current assignee: XINGSHUI VALVE FACTORY CANGZHOU CITY
Priority date: 1997-08-25
Filing date: 1997-08-25
Publication date: 1999-04-21
Anticipated expiration: 2007-08-25

Abstract

The utility model provides a proportional pressure reducing valve. A hollow piston valve core in the shape of a circular table is arranged in and connected with a valve body which is composed of a valve seat and a valve cover, from 4 to 16 uniformly distributed though holes are manufactured on a circumferential wall of the bottom side of the valve core, the bottom end surface of the valve core is connected with sealing gaskets via screws and pressure plates, and sealing rings are respectively imbedded and arranged in a convex ring table at the inner chamber of the valve seat and in a concave slot in an upper opening part. The utility model pushes the piston valve core via differential pressure in the front of the proportional pressure reducing valve and in the back of the proportional pressure reducing valve, controls the degree of opening of an interception opening, and realizes the goal of pressure reduction. The utility model has novel structure, and convenient use and assembly. The utility model is a novel pressure reducing valve.

Description

Proportion type reducing valve

The utility model belongs to a kind of valve in the mechanical engineering technical field, is a kind of proportion type reducing valve that is used for controlling plumbing fixtures pressure particularly.

On the pipeline of carrying liquid, especially the feedwater piping of tall building is the pressure in control and the balance tube, needs to install reduction valve usually.Existing proportion type reducing valve mainly is by valve seat, valve gap and dumbbell-like shape valve core, and valve core adds the proportion type reducing valve that ring set is connected and forms.Because existing proportion type reducing valve is to adopt valve core to cooperate with valve body by ring set, its structure is complicated, and volume is bigger, and assembling and use inconvenience.

The purpose of the utility model provides a kind of novel proportion type reducing valve, makes its novel structure, reasonable in design, easy to use.

For achieving the above object, solution of the present utility model is: adopt hollow round table shape piston type valve core, be shaped on 4-16 uniform through hole on the peripheral wall of valve core bottom side, the valve core bottom end is by screw and pressing plate load sealing gasket, valve core is loaded in the valve body that is connected to form by valve seat and valve gap movingly, the bulge loop platform in the valve seat and suitable for reading in be installed with the seal ring that matches with valve core.The valve body that is combined into by valve seat and valve gap can be made for flange-type valve body or I.S.S valve body as required.During use, with the direct load of this reduction valve on fluid pipeline.It is utilize before the valve with valve after pressure reduction promote the piston type valve core control mouthful aperture of damming, reach the purpose of decompression.

Because the utility model is to adopt hollow round table shape piston type valve core directly to be connected in the valve body of being made up of valve seat and valve gap movingly, cross section product moment by floating piston valve core two ends in the valve body constitute before the valve with valve after pressure difference, its novel structure, reasonable in design, the volume essence is little, assembling and easy to use is a kind of novel reduction valve.

Below in conjunction with drawings and Examples the utility model is described in further detail.

Fig. 1 is the half sectional view of the utility model concrete structure.

Fig. 2 is the sectional view of another embodiment's valve core of the utility model.

Fig. 3 be among Fig. 2 A-A to sectional view.

As shown in Figure 1, the utility model is a load hollow round table shape piston type valve core (5) movingly in added the body cavity that seal ring (1) connects to form by valve seat (7) and valve gap (2), be shaped on 4-16 uniform water through hole (6) excessively on the peripheral wall of valve core (5) bottom side, valve core (5) bottom end is fitted with sealing gasket (8) by screw (10) and pressing plate (9); In the groove of the bulge loop platform of valve seat (7) inner chamber and upper oral part, be installed with the seal ring (4,3) that matches with valve core (5) respectively.

With reference to Fig. 2, embodiment shown in Figure 3, be shaped on annular groove on the upper oral part outer wall of the utility model valve core (5), insert seal ring (11) and valve seat (7) internal chamber wall close fit in the groove also can replace the seal ring (3) of valve seat (7) upper oral part.

Claims

1, a kind of proportion type reducing valve of forming by valve seat, valve gap and valve core, the valve core that it is characterized in that this reduction valve is a hollow round table shape piston type valve core (5), be shaped on 4-16 uniform through hole (6) on the peripheral wall of valve core (5) bottom side, valve core (5) bottom end is fitted with sealing gasket (8) by screw (10) and pressing plate (9), be installed with seal ring (4,3) respectively in the bulge loop platform of valve seat (7) inner chamber and the groove of upper oral part, valve core (5) load movingly is in being added the valve body that seal ring (1) connects to form by valve seat (7) and valve gap (2).

2, proportion type reducing valve according to claim 1 is characterized in that the upper oral part outer wall of piston type valve core (5) is shaped on concave ring groove, insert seal ring (11) in the groove.