CN2141853Y

CN2141853Y - Diaphragm type water level control valve

Info

Publication number: CN2141853Y
Application number: CN 92217615
Authority: CN
Inventors: 徐正喜; 钱金涛
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-08-19
Filing date: 1992-08-19
Publication date: 1993-09-08
Anticipated expiration: 2002-08-19

Abstract

The utility model relates to a diaphragm type water level control valve. A guide valve, a lever, and a heavy pull type floating ball are installed on one side of a valve cover. An inner cavity which is composed of a valve body cover and a valve body is separated by a diaphragm. A guide rod is sheathed at the center of the valve cover. The upper end of the guide rod is fixed on the valve body cover. A valve seat is sheathed inside the valve body. A buffering bowl which is corresponding to the valve cover is installed and fixed at the center of the valve seat. When the diaphragm type water level control valve is closed, the noise of the diaphragm type water level control valve is small, the diaphragm type water level control valve is free from the influence of scale deposit and impurity, and is not easy to be clamped to death. The through diameter of the diaphragm type water level control valve is equal to a nominal through diameter. A good deal of non-ferrous metal is saved. The cost of the diaphragm type water level control valve is low. The floating ball can be made smaller, and the diaphragm type water level control valve is not easy to be damaged. The installation of the diaphragm type water level control valve is free from the influence of angles. The diaphragm type water level control valve has reasonable and artful design, and good technical performance.

Description

Diaphragm type water level control valve

The utility model relates to engineering element or the parts in the mechanical engineering, is a kind of novel valve body.

Altitude valve in the existing machinery engineering, mostly adopt the direct-acting type altitude valve, structure is the fixedly connected piston in valve gap upper end, piston sleeve is contained in the upper cavity, the valve gap lower end directly contacts with the waste pipe end face, in order to solve upper cavity internal drainage problem, generally all be by pilot valve of a big ball float interlock, water is effluxed, this direct-acting type altitude valve, because valve gap direct collision waste pipe end face, noise is big, and piston is because incrustation scale and impurity are easy and upper cavity blocks, and latus rectum is generally little than each adopted latus rectum, the ball float damage of leaking greatly and easily, whole valve is made and is needed use a large amount of non-ferrous metals, cost height.

The purpose of the utility model aims to provide a kind of operation when closing, and noise is little, is not subjected to incrustation scale to influence, be difficult for blocking, latus rectum equals each adopted latus rectum, ball float can be done smallerly, and whole valve is saved a large amount of non-ferrous metals, diaphragm type altitude valve that cost is low.

Fig. 1 is the utility model structure longitudinal sectional view.

Technical solution of the present utility model is: this diaphragm type water level control valve, in body cap (4) one sides pilot valve (2) is installed, lever (3), and lever end is lifted with heavy pull-type ball float (1), body cap (4) is separated by barrier film (7) with the inner chamber that valve body (9) consists of, barrier film (7) periphery is fixed on valve body (9) or the body cap (4), barrier film (7) center is fixedly connected with valve gap (8), valve gap (8) center hub is equipped with guide post (5), guide post (5) upper end is fixed on the body cap (4), valve seat (10) is sleeved in the valve body (9), and valve seat (10) center is mounted with the buffering bowl (17) corresponding with valve gap (8).

Below in conjunction with accompanying drawing the technical solution of the utility model is made detailed description:

As shown in Figure 1, this diaphragm type altitude valve has heavy pull-type ball float (1), pilot valve (2), lever (3), valve gap body (4), guide rod (5), cushion pad (6), barrier film (7), valve gap (8), valve body (9), valve seat (10), damping hole (11), balance spring (12), main spool spring (13), backwater hole (15), rubber pad (16), buffering bowl (17), water outlet (18), water intake (19), body cap (4) is fixedlyed connected with valve body (9), lever (3) one ends can be made solid sphere by a backguy pull-type ball float of weight of lifting (1), lever (3) the other end is movably arranged on the body cap (4), also be connected with balance spring (12) between lever end and the body cap (4) simultaneously, valve gap body (4) is separated by barrier film (7) with the inner chamber of valve body (9), barrier film (7) periphery is fixed on the fixed connection place of valve body (9) and body cap (4), fixedly connected with valve gap (8) in barrier film (7) center, valve gap (8) center hub is equipped with guide rod (5), guide rod (5) upper end by fixed by nut on body cap (4), around guide rod (5) cushion pad (6) and main spool spring (13) are installed between body cap (4) and the valve gap (8), valve gap (8) lower end fixed connection has rubber pad (16), valve seat (10) is sleeved in the valve body (9), buffering bowl (17) is fixed on the valve seat (10) by support, valve gap (8) lower bulk of buffering bowl (17) inner chamber suit correspondence, has certain interval between the two, valve gap (8) matches when operation is closed with valve seat (10), valve seat (10) lower end is water outlet (18), has backwater hole (15) at valve body (9) by lever one side inwall, by lever one side inwall pilot valve (2) is installed also at body cap (4), backwater hole (15) one ends are communicated with pilot valve (2), the other end is communicated with water outlet (18), have spool (14) and pilot valve push rod (20) in the pilot valve (2), pilot valve push rod (20) one ends withstand on lever (3) termination, the other end withstands on the spool (14), when lever (3) compress into pilot valve push rod (20) and and then when being advanced into spool (14), the chamber is by spool (14) within body cap (4) and the barrier film (7), backwater hole (15) is communicated with water outlet (18), draining, body cap (4) are gone up also has damping hole.

Working principle: when water level in water pool was reduced to certain altitude, heavy pull-type ball float left the water surface, and the buoyancy that ball float is obtained reduces, weight increases, and by lever compressing pilot valve push rod, the water that makes the barrier film epicoele is from pilot valve, backwater hole to water outlet is discharged, owing on the body cap damping hole is arranged, produce pressure drop, the barrier film upper cavity pressure is descended, the hydraulic pressure that water intake is come in moves upward barrier film, the drive valve gap moves upward, and valve gap is opened, the feed water flow inlet/outlet, enter the pond, when water level in water pool through rising to the ball float line after the water inlet after a while, buoyancy that ball float obtains increases, weight saving, lever resets, the pilot valve push rod withdraws from, and pilot valve resets and cuts out, and barrier film descends under the effect of spring and deadweight, the water of epicoele is replenished by damping hole, valve gap falls on the valve seat, closes this valve, cuts off the turnover current.

Advantage: operation when closing noise little, be not subjected to the incrustation scale impurity effect, be difficult for stuckly, latus rectum equals nominal latus rectum, saves a large amount of non-ferrous metals, cost is low, and ball float can be done smallerly, and is not fragile, long service life, installation is not affected by angle, and is reasonable in design ingenious, and technical performance is stable.

Claims

1, a kind of diaphragm type altitude valve, has ball float (1), pilot valve (2), lever (3), valve body (9), body cap (4), the inner chamber that it is characterized in that valve body (9) and body cap (4) formation is separated by barrier film (7), barrier film (7) periphery is fixed on valve body (9) or the body cap (4), fixedly connected with valve gap (8) in barrier film (7) center, valve gap (8) center hub is equipped with guide rod (5), guide rod (5) upper end is fixed on the body cap (4), valve seat (10) is sleeved in the valve body (9), and valve seat (10) center is mounted with and the corresponding buffering bowl in valve gap (8) bottom (17).

2,, it is characterized in that around guide rod (5) cushion pad (6) and main spool spring (13) being installed also between body cap (4) and the valve gap (8) valve gap (8) the lower end rubber pad (16) that has been fixedly connected according to the diaphragm type altitude valve of claim 1.

3, according to the diaphragm type altitude valve of claim 1, it is characterized in that buffering bowl (17) is fixed on the valve seat (10) by support, valve gap (8) lower bulk of buffering bowl (17) inner chamber suit correspondence has certain interval between the two.

4, according to the diaphragm type altitude valve of claim 1, it is characterized in that valve body (9) has backwater hole (15) by lever one side inwall, backwater hole (15) one ends are communicated with pilot valve (2), and the other end is communicated with water outlet (18).

5, according to the diaphragm type altitude valve of claim 1, it is characterized in that ball float (1) the pull-type ball float of attaching most importance to, can make solid sphere.

6,, it is characterized in that also having the damping hole of having on the body cap (4) according to the diaphragm type altitude valve of claim 1.