CN87211361U

CN87211361U - Check valve with floating ball

Info

Publication number: CN87211361U
Application number: CN 87211361
Authority: CN
Inventors: 盛一麟
Original assignee: 江伟平
Priority date: 1987-11-04
Filing date: 1987-11-04
Publication date: 1988-09-07

Abstract

The utility model provides a late-model inclined floating type check valve with a floating ball, which is composed of a valve body, a valve core, a valve seat and a shim. The utility model is characterized in that the valve body is formed by that a branch tube is slantwise intersected with the valve body; the ball-shaped valve core moves up and down according to the variation of the fluid state of the fluid in the branch tube to play the function of the check valve. The valve core is hidden into the top part of the branch tube when the fluid flows, so the valve core has small resistance to the flowing of the fluid, and compared with the present floating ball type check valve, the resistance can be reduced by about 30 percent.

Description

Check valve with floating ball

The utility model belongs to the valve type in the universal pipes annex.

Existing ball check valve has H80C-10 type float-ball type safety check, H62X-10S type float-ball type safety check etc., all forms the unidirectional keying that prevents medium counter flow by valve body, valve seat, ball core, seal ring etc. and uses.When this class safety check is opened, the main stream line of fluid is by the valve ball centre of sphere, flow to when therefore fluid is flowed through valve body all and must change, opposite side at spheroid forms a large amount of eddy current simultaneously, add the supporting structure of the support valve ball that valve inner is provided with, these all cause the resistance drop of original float-ball type safety check bigger, simultaneously, it is bigger that the ball core is positioned at the load that is hit on the fluid main stream line, easily abrasion.

The purpose of this utility model provides a kind of novel comparing with similar valve, and to have a drag losses little, compact structure, the oblique floating type ball check valve of long service life.

The utility model is according to when spherical object when sinking velocity is less than flow rate of fluid in fluid, spheroid these two velocity vectors and kinetic energy move upward under promoting, when spheroid is run into beveled walls, the flow velocity momentum vector has a component along the inclined-plane, the principle design that makes ball be rolled to the arm top along the inclined-plane realizes.Because spool enters in the arm, thereby avoid the main stream line of fluid, reduced the resistance coefficient when fluid flows greatly.The oblique floating type ball check valve is by valve body, spool, valve seat and pad are formed, its valve body is diagonal to valve flowing channel by arm and constitutes, the skew angle of arm center line and valve flowing channel center line is 35 °～55 °, prop up bore greater than the valve flowing channel diameter, it can be cylindrical propping up tube shape, it also can be taper shape etc., spherical spool is placed in the arm, its proportion is greater than specific gravity, diameter is greater than the valve flowing channel diameter and less than a bore, spool rolls into valve flowing channel till the ass ascends the ladder like this, and it can move with change easy on and off in arm of fluid flow state simultaneously, plays the effect of safety check.The internal diameter of valve seat is identical with the valve flowing channel diameter, and pad and valve seal by elastic material system and be complementary.The valve body upper and lower end can respectively have a flange arrangement to be connected with pipeline, also can adopt alternate manner to be connected.The oblique floating type ball check valve is like this work: when fluid the forward pressure reduction at valve two ends greater than spool with the gravitational difference of volume fluid the time, spool is lifted off a seat, when it runs into the inclined-plane, be rolled to the arm top along the inclined-plane, fluid will pass through valve to large extent like this, and resistance coefficient can be reduced to lesser extent; Otherwise, when fluid the forward pressure reduction at valve two ends less than spool with volume fluid gravitational difference the time, spool will drop down onto valve seat, play the safety check effect.Valve body, spool, valve seat can be metallic material such as cast iron, carbon steel, alloyed steel, copper, aluminium, also can be other materials such as plastics, plexiglass, glass fibre reinforced plastics, and the spool material can also be rubber, coated rubber, coated plastics etc.

Below in conjunction with accompanying drawing the utility model is further described:

1 valve body, 2 spools, 3 valve seats, 4 pads

Fig. 1 is the longitudinal sectional view of the utility model oblique floating type ball check valve.

Fig. 2 is the A-A partial sectional view that the utility model oblique floating type ball check valve props up tubular portion.

As shown in Figure 1, this oblique floating type ball check valve is made up of valve body 1, spool 2, valve seat 3 and pad 4.Valve body 1 is an ironcasting, by arm and valve flowing channel oblique is one, arm center line and valve flowing channel center line skew angle are 45 °, a bore 60mm in the valve body 1, valve flowing channel diameter 40mm, spool 2 are that the solid rubber bulb diameter is 50mm, pad 4 usefulness asbestos rubber materials are made, valve seat 3 is the brass material, and internal diameter is 40mm, and valve seat 3 seals by pad 4 and valve body 1 and is complementary.

Because the utility model is kept away into the arm top spool 2 when Fluid Flow in A, make the less abrasion that is subjected to fluid of spool, thereby service life is longer. Compare with existing float type check valve, the resistance drop of valve is littler, add fluid on sphere owing to climb the corresponding minimizing of drag force that stream causes, and do not have additional body structure etc. in the valve body 1, therefore, drag overall is fallen and can be reduced approximately 30%, structure is simplified. Generally can be used for bearing pressure at 1.569MPa(16kgf/cm²) the one-way flow occasion of following various fluid liquids.

Claims

1, a kind of oblique floating type ball check valve of forming by valve body, spool, valve seat and pad, it is characterized in that valve body is diagonal to valve flowing channel by arm and forms, the skew angle of arm and valve flowing channel is 35 °～55 °, prop up bore greater than the valve flowing channel diameter, rotatable spool is spherical in arm, its diameter is greater than the valve flowing channel diameter and less than bore, the aperture valve seat identical with the valve flowing channel diameter by elastic material system pad and valve seal and be complementary.

2, oblique floating type ball check valve according to claim 1, it is characterized in that valve body, spool, valve seat can be cast iron, carbon steel, alloyed steel, copper, aluminium, also can be plastics, plexiglass, glass fibre reinforced plastics material, the spool material can also be rubber, coated rubber, coated plastics.