CN206001067U - Multifunctional reflux valve - Google Patents

Abstract

A kind of Multifunctional reflux valve, including valve seat, valve gap, valve rod, flap and handss wheel, valve gap is connected with valve seat by bolt and nut, form valve pocket between the two, flap and spring is comprised in valve pocket, flap is placed in the junction of medium inlet and media outlet, valve rod includes big valve rod and small valve-rod, big valve stem sleeve is outside small valve-rod, big small valve-rod upper end is all connected with handss wheel, the through hole through bonnet central for the big valve rod lower end enters valve pocket, spring spacer is fixed on big valve rod lower end, small valve-rod lower end passes through flap center and sets a flap spacer in small valve-rod lower end, one section of stem exterior stretching into valve pocket is provided with a spring, spring one end props up flap inwall, the other end props up valve gap inwall.This utility model can control the up and down motion of big valve rod and small valve-rod by handwheel, meets the difference in functionality demand during using.

Description

Multifunctional reflux valve

Technical field

This utility model is related to technical field of valve manufacturing and in particular to a kind of multi-functional time gathering multi -function in integral whole Stream valve.

Background technology

Valve is by changing path section and media flow direction come the part of fluid conveying in control pipeline, valve Species is a lot, and the function difference of variety classes valve is it can be common that have the functions such as cut-off, current limliting, non-return, backflow.With product The development further of industry, the market share occupied by multi-functional valve is increasing, and the multi-functional valve of prior art is only Have the function of muffling check valve, regulating valve, balanced valve, cutoff function concurrently, and do not possess the function of reflux inlet.

Utility model content

This utility model purpose is to provide a kind of Multifunctional reflux valve, does not possess backflow to solve existing multi-functional valve The defect of function.

For achieving the above object, this utility model takes following technical scheme：A kind of Multifunctional reflux valve, including valve Seat, valve gap, valve rod, flap and handwheel, are provided with through hole A in the middle part of described valve gap, valve gap is connected by bolt and nut with valve seat, both Between form valve pocket, be provided with a flap in described valve pocket, described flap is placed in the company of valve body media entrance and valve body media outlet Meet place, the cross-sectional area of flap is slightly larger than the sectional area of junction valve pocket, and is provided with through hole B in the middle part of flap.

Described valve rod includes big valve rod and small valve-rod, and small valve-rod is enclosed within big stem internal, the upper end of big valve rod and small valve-rod All connect with handwheel, big valve rod lower end passes through through hole A to enter valve pocket, and the lower end of big valve rod is fixedly connected a spring spacer, little Valve rod lower end passes through through hole A then to pass through through hole B, and small valve-rod lower end is fixedly connected a flap spacer.

Preferably, one section of valve rod in valve pocket is wound with a spring in outside, and spring one end props up valve gap inwall, and the other end supports Live flap inwall.

Preferably, valve rod carries aperture scale and pointer, the opening value of flap can be shown in real time.

Preferably, it is filled with filler between valve gap and big valve rod, above filler, is additionally provided with a gland, gland leads to Cross nut and eyelet bolt to fix with valve gap, described small valve-rod is provided with two O-ring it is therefore prevented that fluid is situated between with the joint of through hole B Matter is penetrated into and is oozed out valve body.

Preferably, setting one valve rod spacer inside small valve-rod, valve rod spacer passes through small valve-rod lower end to pass through connector It is connected with valve seat it is ensured that valve rod moves up and down along straight line.

Preferably, all screw thread counterparts of described Multifunctional reflux valve all adopt different materials to avoid stinging mutually Extremely it is not necessary to special tool(s) can be carried out execute-in-place and maintenance.

By using above technological means, it is possible to achieve Multifunctional reflux valve have concurrently check-valves, balanced valve, stop valve, Regulating valve, the function of reflux inlet, its specific implementation is as follows：

Passage between medium inlet and media outlet is intercepted with flap, after water pump is opened, pipeline pressure at medium inlet Power reach 4.5PSI about when, medium boost flap realize open, when water pump cuts out, hydraulic pressure disappearance, in the bullet of internals spring Under power effect, flap is automatically switched off it is achieved that the function of noise reduction non-return；Rotation hand wheel controls big valve rod to move up and down and changes spring The position of spacer, spring spacer to limit the maximum opening of flap in the form of propping up flap endoporus it is achieved that current limliting is put down The effect of weighing apparatus, further, valve rod carries aperture scale and pointer can instant playback flap aperture be converted into flow, permissible Play the effect of flow rate test；Change the position of spring spacer by controlling the movement travel of big valve rod, by spring spacer Move to flap inwall, now flap cannot be opened, serve shutoff effect it is achieved that the function of stop valve；By rotation hand wheel Big valve rod is controlled to move up and down the position of adjustment spring spacer and then adjust the aperture of flap to adjust flow it is achieved that adjusting The function of valve；Rotation hand wheel drives big valve rod to move upwards makes spring spacer be shown in a fully open operation, and continues rotation hand wheel, now Handwheel controls small valve-rod to move up and down, and drives and move on flap spacer while small valve-rod moves upwards, and now flap is in and beats Open state is it is achieved that the function of reflux inlet.

Brief description

Fig. 1 is the structural representation of this utility model Multifunctional reflux valve.

Wherein：1. valve seat, 2. medium inlet, 3. media outlet, 4. flap, 5. flap spacer, 6. valve rod,

7. small valve-rod, 8. big valve rod, 9.O type circle, 10. spring, 11. spring spacers, 12. valve rod spacers,

13. bolt and nuts, 14. valve gaps, 15. through hole B, 16. through hole A, 17. fillers, 18. eyelet bolts, 19. filler pressures Lid, 20. nuts, 21. valve stem nuts, 22. pins, 23. handwheels.

Wherein：Pointer, aperture scale mark not in the drawings.

Specific embodiment

Combine accompanying drawing below by specific embodiment the present invention is described in further detail.

As shown in figure 1, a kind of Multifunctional reflux valve, including valve seat 1 and valve gap 14, valve seat 1 passes through bolt spiral shell with valve gap 14 Female 13 are connected, and are formed between the two and include flap 4 in valve pocket, valve pocket, and flap 4 is placed in medium inlet 2 and media outlet 3 Junction, the cross-sectional area of flap 4 is slightly larger than the sectional area of junction, and the center of valve gap 14 and flap 4 has logical Hole A16 and through hole B15, valve rod 6 is collectively constituted by big valve rod 7 and small valve-rod 8, the aperture of through hole A16 and through hole B15 respectively with greatly Valve rod 7 is matched with the outer tube diameter of small valve-rod 8.Big valve rod 8 is all connected with handwheel 23 with the upper end of small valve-rod 7, big valve rod 8 lower end Stretch into inside valve pocket by the outside via through holes A16 of valve gap 14, the lower end of big valve rod 8 is fixed with a spring spacer 11, small valve-rod 7 Lower end passes through through hole A then to pass through through hole B15, and small valve-rod 7 lower end is fixed with a flap spacer 5.It is in flap 4 and valve gap 14 Valve rod 6 between putting is provided with a spring 10 in outside, and valve gap 14 inwall is withstood in spring 10 one end, and the other end withstands flap 4 inwall.

Further, in order to control valve rod 6 can point-blank move up and down, small valve-rod 7 internal setting one valve rod Spacer 12, valve rod spacer 12 is connected through small valve-rod 7 lower port with valve seat 1.

Further, in order to prevent media leaks during valve body work, small valve-rod 7 and through hole B15 joint are provided with two O-ring 9, It is filled with filler 17, filler 17 top is provided with a gland 19, gland passes through nut 20 between the big valve rod 8 of valve gap 13 Fixing with valve gap 14 with loose joint bolt 18.

In real work, water pump open after, at medium inlet 2 water flow pressure reach 4.5PSI about when, hydraulic pressure boosts Flap 4 realizes valve opening, and when water pump cuts out, under the elastic force of internals spring 10 acts on, flap 4 returns to initial position, valve Door is automatically switched off, and serves the effect of non-return.Big valve rod 8 is controlled to move up and down by rotation hand wheel 23 thus changing spring positioning The maximum opening of the position control flap 4 of piece 11, plays the effect of Flow-rate adjustment；When spring spacer 11 drops to certain position And when contacting, now flap 4 cannot be opened, serve the effect of current cut-off with flap 4 inwall；Aperture is carried on valve rod 6 Scale and pointer, can be with instant playback flap 4 aperture, in conjunction with the pressure of Multifunctional reflux valve medium inlet 2 and media outlet 3 both sides Difference, can calculate rate-of flow, carry out live flow adjustment also dependent on system requirements it is achieved that the function of balanced valve；Rotation Change hands wheel 14 drive big valve rods 7 on move make spring spacer 11 be in fully opened, this big valve rod 8 cannot continue on move, continue Continuous rotation hand wheel 21 drives small valve-rod 8 to move upwards, drives and moves on flap spacer 5, now while small valve-rod 8 moves upwards Flap 4 is in always on state it is achieved that the function of reflux inlet.

The Multifunctional reflux valve that this utility model provides, compact conformation, and several functions, in one, collect in a valve body Become the valve of difference in functionality, in valve, all of screw thread counterpart all adopts different materials to avoid killing mutually it is not necessary to special Different instrument can be carried out on-site maintenance, controls big small valve-rod to move up and down by operating handwheel, it is possible to achieve Multifunctional reflux The difference in functionality of valve, meets different use demands.

Claims (5)

1. a kind of Multifunctional reflux valve, including valve seat, valve gap, flap, valve rod, handwheel, medium inlet and media outlet, described valve Lid is connected with valve seat by bolt and nut, forms valve pocket between the two, comprises a flap and a spring in valve pocket;

It is characterized in that：Described flap is placed in the junction of medium inlet and media outlet, and the cross-sectional area of flap is more than medium Entrance and the cross-sectional area of media outlet junction；Described valve rod includes big valve rod and small valve-rod, and small valve-rod is enclosed within big valve rod Portion, big valve rod is all connected with handwheel with the upper end of small valve-rod, and the lower end of big valve rod passes through through hole A to enter inside valve pocket, big valve rod Lower end fix a spring spacer；The lower end of small valve-rod passes through through hole A to enter inside valve pocket and then passes through through hole B, small valve-rod Lower end fix a flap stator；

Wherein：One section of valve rod in valve pocket is wound with a spring in outside, and spring one end props up valve gap inwall, and the other end props up flap Inwall.

2. as claimed in claim 1 a kind of Multifunctional reflux valve it is characterised in that：Aperture scale is carried on described valve rod and refers to Pin, for the real-time opening value showing flap.

3. as claimed in claim 1 a kind of Multifunctional reflux valve it is characterised in that：It is filled between described valve gap and big valve rod Filler, filler top is provided with a gland, and gland is fixed with valve gap by nut.

4. as claimed in claim 1 a kind of Multifunctional reflux valve it is characterised in that：Described small valve-rod and the joint of through hole B It is provided with two airtight O-ring.

5. as claimed in claim 1 a kind of Multifunctional reflux valve it is characterised in that：Inside described small valve-rod, setting one valve rod is fixed Bit slice, one end of valve rod spacer is passed by small valve-rod lower end, is connected with valve seat it is ensured that valve rod is along straight line by connector Move up and down.