CN100564967C

CN100564967C - Cam pressure-increasing valve

Info

Publication number: CN100564967C
Application number: CNB2006101554448A
Authority: CN
Inventors: 黄金伦
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-12-22
Filing date: 2006-12-22
Publication date: 2009-12-02
Anticipated expiration: 2026-12-22
Also published as: CN101205980A

Abstract

A kind of cam pressure-increasing valve comprises valve body, poppet shaft and spool, is provided with water intake and water outlet on valve body, lid is housed on valve body, spool has upper and lower each transverse arm and described poppet shaft to connect as one, and in the bending part of this transverse arm screw is arranged, and is used to screw in screws clamp, cam is installed; Water outlet in valve body is equipped with spring support, and each leaf spring all seals in this spring support up and down, and this leaf spring pushes against the left side at cam all the time.When valve cut out, valve core rotation pushed against the water intake of valve body, and the large-diameter portion branch of cam withstands leaf spring, makes leaf spring be subjected to maximum deflection, and the water pressure resistance that reach valve this moment adds value of safety factor value for the highest hydraulic pressure; Rotational valve core when driving valve, the path part that makes the cam that rotates synchronously with spool is towards leaf spring, and the leaf spring resilience becomes linear state, and touches cam, props up water flow impact pressure.Characteristics are: the slit of automatic compensate for wear, and there is cam to increase and decrease the anti-attrition function of pressure, the life-span is long, is beneficial to environmental protection.

Description

Cam pressure-increasing valve

The present invention is a mechanical field, a kind of cam pressure-increasing valve.

The object of the invention provides that a kind of switch is quick, flow is big, environmental protection and the cheap water valve of cost performance.

Description of drawings:

Fig. 1 is the cam pressure-increasing valve sectional drawing.

Fig. 2 is A-A, the B-B section of Fig. 1.

Fig. 3 is the three-dimensional section of spring support.

Fig. 4 is the protruding ridge of semiaxis, the straight groove stereogram on the poppet shaft.

Fig. 1, spool 20 pushes against the water inlet of valve body 1, is that valve cuts out, and white arrow represents water Press. When spool rotates (Fig. 2) by deceiving the direction of arrow, the valve unlatching. Spool has upper and lower each horizontal stroke Arm 22 is the integral body of hot investment casting with axle 21, and there is screw in arm 22 knees, is to screw in screw The place of 24a, clamping, installation cam 24. Respectively there is up and down blockage location on axle 21 right sides 23, be the location of holding cam 24. Leaf spring 25 up and down is pushed against up and down separately protruding all the time The wheel left side. As can be seen from Figure 2: when valve cut out, the big R of cam just withstood spring 25, makes Spring 25 is subjected to maximum crooked, and the water pressure resistance that reach valve this moment is: the highest hydraulic pressure adds safety coefficient Value. While and the spacing N that cam connects firmly, withstand spring support 26. Driving valve (by black arrow) rotates Spool 20 makes the little R1 of the cam 24 that rotates synchronously with spool towards leaf spring 25, leaf spring 25 Resilience straightens line states, and touches cam 24, props up water flow impact pressure. The limit of standard-sized sheet this moment Position M transfers to the place shown in the double dot dash line M1, and central collision is lived resilience and become linearity The leaf spring 25 of attitude (representing with a straight double dot dash line) defines the position of full open at this point.

Leaf spring 25, each one all seals in same spring support 26 up and down; Three-dimensional section such as Fig. 3 of spring support 26, the rectangular opening E of the left and right sides, top and the left and right sides, bottom penetrates leaf spring 25.On the horizontal bent plate below the spring support 26 a breach F being arranged, is the lower end position that limits the axle 21 of spool, and the lower end of axle 21 is stood on the interior bottom plane of valve body, only to compensation, the translation of supercharging direction.

Fixing of spring support 26: its back has the hole G of punch press stretching, just in time allocates the osculum interior (Fig. 1, Fig. 2, Fig. 3) in valve body 1 left side into, and the lower end of spring support 26 withstands on the internal surface at the bottom of the valve, and the right side is blocked by leaf spring 25 by cam.

The upper end of poppet shaft 21, one disc-shaped flange 21a is arranged, one groove (Fig. 4) is arranged above it, the left end of groove has the breach H that opens flange, be used for becoming flexible the protruding ridge 11 of allocating semiaxis 10 lower ends into, the left end on the protruding ridge 11 has a protruding rank J, just in time hooks breach H, guarantee that spool can only move towards supercharging, compensation direction, restriction moves towards other directions.

Be inserted in three O RunddichtringOs 4 on the semiaxis 10, again from cover 2 below be upward through, the big pillow block 12 of semiaxis lower end is propped up cover 2 inner planes, the top double nut 13 and the tightening position of semiaxis, again the upper end semiaxis on have one arc to mill flat place be the dress handle, be the screw thread that is used for screwing in fastening nut at last.So semiaxis 10 is a center of rotation to cover 2 center hole, can rotate.The effect that bottle opener (being turn screw) drives (metaphor) slotted head screw is played on the protruding ridge 11 of semiaxis lower end, just can actuating valve mandrel 21, and make valve core rotation reach the purpose of open and close, spool 20 plays compensation, the supercharging direction moves but do not place restrictions on.

Lid 2 is used screw-thread fit with valve body 1, with 2 big O RunddichtringO 2 sealings.Usually do not have water herein.But as the boiling water main valve, may also there be water at this place, just in case seal ring in high-temperature water, be dissolved in the potable water from fluoroplastic or the unfavorable micro substance of drinking of other elevated-temperature seal plastics, possibility can be said to reduce to and equal zero.Because pillow block 12 and lid 2 and cover 2 with the end face surface of contact of valve body 1, all bright and clean through being machined into, smooth, applying close joint are seldom understood seepage, just in case seepage, also to excessive.

The characteristics of this valve are: 1, do not have a seal ring directly to be immersed in the water; 2, the slit of automatic compensate for wear; The anti-attrition function that 3, cam increase and decrease pressure arranged; 4, leaf spring and cam (friction position) all harden, and be wear-resisting, so comprehensive life is long, environmental protection is good.

Claims

1, a kind of cam pressure-increasing valve, comprise valve body, poppet shaft and spool, on valve body, be provided with water intake and water outlet, lid is housed on valve body, it is characterized in that: described spool has upper and lower each transverse arm and described poppet shaft to connect as one, there is screw in bending part at this transverse arm, is used to screw in screws clamp, cam is installed; Water outlet in described valve body is equipped with spring support, and each leaf spring all seals in this spring support up and down, and this leaf spring pushes against the left side at cam all the time; Be provided with a disc-shaped flange in the upper end of described poppet shaft, on this flange, be provided with straight groove and be used for the loosening protruding ridge of allocating the semiaxis lower end into, the breach of opening flange is arranged at the left end of this straight groove; Left end on the described protruding ridge has protruding rank, just in time hooks this breach, guarantees that spool can only move towards supercharging, compensation direction, and restriction moves towards other directions; Be inserted in three O RunddichtringOs on this semiaxis, this semiaxis is upward through below described lid; Below described spring support, be provided with horizontal bent plate, on this horizontal bent plate, a breach arranged, be used to limit the lower end position of poppet shaft, the lower end of poppet shaft is stood on the interior bottom plane of valve body, only to compensation, the translation of supercharging direction; When this pressure charging valve cut out, described spool pushed against the water intake of valve body, and the large-diameter portion branch of cam withstands leaf spring, makes leaf spring be subjected to maximum deflection, and the water pressure resistance that reach valve this moment adds value of safety factor value for the highest hydraulic pressure; Rotational valve core when driving valve, the path part that makes the cam that rotates synchronously with spool is towards leaf spring, and the leaf spring resilience becomes linear state, and touches cam, props up water flow impact pressure.