CN2761922Y

CN2761922Y - One-way flow regulating valve

Info

Publication number: CN2761922Y
Application number: CN 200420115764
Authority: CN
Inventors: 于集川; 刘少杰
Original assignee: HEBEI CHENGDE HIGH-PRESSURE VALVE PIPE FACTORY
Current assignee: HEBEI CHENGDE HIGH-PRESSURE VALVE PIPE FACTORY
Priority date: 2004-11-22
Filing date: 2004-11-22
Publication date: 2006-03-01
Anticipated expiration: 2014-11-22

Abstract

The utility model relates to a one-way flow regulating valve for a plurality of fluid pipelines. The one-way flow regulating valve adopts a forging piece; a valve seat (13) is positioned between the upper part of a fluid inlet (11) and the lower part of a fluid outlet (10), and the integral valve seat (13) forms a flat and hollow cylinder on which sealing structures (26, 27, 28) are arranged; a cage hood (23) which is concentric with a valve body (12) and is used for supporting a guide sleeve (22) is arranged on the valve seat (13); the end of a valve core (14) is provided with a flow linear regulating mechanism; double sealing structures (16, 17) are arranged between the upper part of the guide sleeve (22) and a valve rod (15); the valve body (12) and a valve cover (18) are connected by bolt fastening structures (20, 21). The utility model has the advantages of compact structure, linear variation to output flow and convenient maintenance and disassembly, and can bear high-pressure fluids.

Description

A kind of one-way flow modulating valve

Technical field

The utility model relates to a kind of one-way valve that is used on the multiple fluid pipeline, particularly relates to a kind of one-way flow modulating valve.

Background technique

One-way valve generally be applied on urea, potassium ammoniacal liquor, water, the wet goods industrial pipeline as by and regulate flow and use, Fig. 1 shows the structure of a kind of one-way flow modulating valve of the prior art under in off position.It is mainly by valve body 1, valve seat 2, spool 3, valve rod 4, stuffing box 5, filler gland 6, valve gap 7, handwheel 9, and fluid output 10 and fluid input 11 constitute.When promoting handwheel 9, valve rod 4 drives on the spool 3 and moves away valve seat 2, regulates the flow purpose thereby change flow area to reach.The valve seat of above-mentioned valve is positioned at the fluid input bottom, and volume is big, consumptive material, and complex structure is difficult for processing; The spool bottom is shape linearly, and flow is non-linear variation when making threshold switch, and noise is big, easily produces cavitation erosion; The valve rod effect is single, and sealing is adopted in the stuffing box and put filler, goes up the sealing means of filled gland, and is big to the frictional force of valve rod because Sealing is big, thereby increased the switch resistance of valve; Valve body and valve gap adopt thread connecting mode, maintenance dismounting inconvenience; In addition, valve member adopts Cast Steel more, and material density is low, and bearing capacity is poor, and application is restricted.Therefore how a kind of compact structure, one-way flow modulating valve functional, easy to maintenance are provided is that people wish the problem that solves.

The model utility content

For overcoming the existing defective of above-mentioned flow control valve of the prior art, the purpose of this utility model is to provide a kind of compact structure, well behaved one-way flow modulating valve, and this valve is convenient to maintenance and maintenance.

Another purpose of the present utility model is that attempt provides a kind of one-way flow modulating valve that can bear high-pressure liquid, to enlarge the application of valve.

For realizing above-mentioned purpose of the present utility model, this one-way flow modulating valve comprises valve body, valve gap and handwheel, valve seat, valve rod, the spool concentric with valve body, fluid input and outlet, wherein valve seat is between fluid input top and fluid output bottom, integral body is flat hollow cylinder, which is provided with sealing configuration; Have shrouding of support guide cover on the valve seat; The spool bottom is provided with linear flow control device; Has double sealing structure between guide sleeve top and the valve rod; Valve body adopts bolt fastening structure with being connected of valve gap.

Sealing configuration on the described valve seat is to be used to place 2 grooves that seal ring uses on the valve seat outer surface and to be used for the sealing surface that contacts and cooperate with the sealing surface of valve rod.

Described shrouding is 4 window structures that are made of last ring, the following muscle that encircles between reaching.

The linear flow control device of described spool bottom is arranged on the isosceles trapezoidal structure or the parabolic structure of spool bottom.

Described double sealing structure is arranged on the guide sleeve y-type seal ring between the hole and valve rod and is arranged in the guide sleeve mesopore groove and the O RunddichtringO between the valve rod.

Described guide sleeve is one to have the cylindrical body of 3 concentric hole.

Described valve body, valve seat, valve rod, spool and valve gap adopt forge piece.

Technique scheme of the present utility model compared with prior art has the following advantages:

1, is arranged between fluid input top and the fluid output bottom owing to this valve seat, but not be positioned at fluid input bottom, and shortened former valve seat height greatly, not only add the man-hour concentricity and guarantee easily, and dwindled the valve seat volume, reduced valve seat weight and consumable quantity; Seat design becomes flat hollow cylinder, and laterally perforate in addition is simple in structure, is easy to processing.

2,,, reduced the cavitation erosion that impact caused on the logical surface of fluid convection so noise is little because this spool bottom is provided with linear flow control device, and flow is linear variation in the time of can making opening of valves.

3, shroud and be designed to by last ring, following 4 window structures that constitute of ring and muscle, simple in structure, be easy to process repair and replacement with part.

4, between guide sleeve and valve rod, adopt y-type seal ring and this double sealing structure of O RunddichtringO to replace the sealing means of stuffing box of the prior art and filler gland, reduced taking up room of Sealing greatly, not only reduced the volume of whole valve, also reduced frictional force, made threshold switch laborsaving flexibly valve rod.

5, valve body and valve gap adopt the bolton mode, are convenient to keep in repair dismounting.

6, because this valve member adopts forge piece, and material density is big, bearing capacity can reach 320kg/cm ², overcome and adopted Cast Steel material density little in the past, can only bear 160kg/cm ²The defective of pressure has improved the coefficient safe in utilization of valve, has enlarged the application of valve.

For the easier quilt of content of the present utility model is clearly understood, describe the utility model in detail with specific embodiment with reference to the accompanying drawings.

Description of drawings

Fig. 1 is the structure diagram of existing one-way flow modulating valve under in off position.

Fig. 2 is the structure diagram of this valve under in off position.

Fig. 3 is the structure diagram of this spool.

Fig. 4 is the structure diagram of this valve seat.

Fig. 5 is the structure diagram of this guide sleeve.

Fig. 6 is the structure diagram that originally shrouds.

Fig. 7 is the structure diagram of this valve under opening state.

Wherein the title of reference character representative is as follows:

Valve body

1,12,

valve seat

2,13, spool 3,14, valve rod 4,15, stuffing box 5, filler gland 6,

valve gap

7,18,

switch nut

8,19, handwheel 9, fluid output 10, fluid input 11, O-ring seals 16, y-shaped ring 17, bolt 20, nut 21, guide sleeve 22 shrouds 23,

sealing surface

24,26, isosceles trapezoid 25,

groove

27,28,31, last hole 29, mesopore 30, following hole 32, last ring 33, muscle 34, hole 35, following ring 36.

Embodiment

With reference to the accompanying drawings embodiment of the present utility model is elaborated, the analog structure in the wherein different accompanying drawings adopts identical reference character to describe.

Fig. 2 shows the structure of this valve under in off position, and valve rod this moment (15) contacts with valve seat (13), and valve is in closed condition.This valve comprises valve body (12), with concentric valve seat (13), spool (14), valve rod (15), the valve gap (18) of valve body (12) be installed in handwheel (9) on the switch nut (19).Valve seat (13) is positioned between fluid input (11) top and fluid output (10) bottom, and integral body is flat hollow cylinder; Valve seat (13) top has shroud (23) that are used for support guide cover (22) concentric with valve body (12); The double sealing structure that has O RunddichtringO (16) and y-type seal ring (17) between guide sleeve (22) top and the valve rod (15); Valve body (12) adopts bolt (20), nut (21) fastening means with being connected of valve gap (18).

Fig. 3 shows the structure of this stem lower portion and spool, has the sealing surface (24) that contacts with valve seat (13) and to cooperate in the bottom of cylindricality valve rod (15), and fluid does not leak when guaranteeing that valve ends.Spool (14) integral body is inverted T-shaped, and the lower end surface can be parabolic profile or isosceles trapezoid (25), because spool flow when threshold switch of parabolic profile is linear variation, the logical face of fluid convection impacts little, so noise is little, part is difficult for cavitation erosion.And isosceles trapezoid has overcome the defective of the difficult processing of parabolic profile near parabolic profile.

Valve seat among Fig. 4 (13) integral body is flat hollow cylinder, the annular sealing surface on top, hole (26) cooperation that is used for contacting with the sealing surface (24) of valve rod (15), 2 grooves (27 on the outer surface, 28) be used to place seal ring, this about sealing means of valve seat guaranteed valve by the time fluid do not leak.

Fig. 5 shows the structure of this guide sleeve, it is one to have the cylindrical body of 3 concentric hole in upper, middle and lower (29,30,32), last hole (29) is used to place y-type seal ring, groove in the mesopore (30) is used to place the O RunddichtringO, this design of guide sleeve not only helps the sealing and the guiding of valve rod, and helps reducing the frictional force to valve rod.

Fig. 6 shows the structure of originally shrouding, shroud (23) be by last ring (33), down ring (36) and between 4 windows (35) structure that constitutes of muscle (34).Originally this design of shrouding cooperates the fluid output that makes this valve to be linear variation with the ingenious of this spool.

Fig. 7 shows the structure of this valve under the complete opening state, rotate handwheel (9), driving switch nut (19) rotates, by the screw thread transmission between valve rod (15) and the switch nut (19) valve rod (15) is promoted, driving spool (14) moves upward, fluid is by spool (14) surface flow mistake, and the window (35) by shrouding (23) and the parabolic surface acting in conjunction of spool (14) make valve realize the linear adjusting of flow.Valve is the flow maximum when complete opening, reverse operation, and flow reduces gradually, and valve cuts out when reaching state shown in Figure 2.

Obviously, the foregoing description of the present utility model only is for the utility model example clearly is described, and is not to be qualification to mode of execution of the present utility model.For those of ordinary skill in the field, can also make the variation or the change of other different structure form on the basis of the above description.Here need not also can't give all mode of executions exhaustive, and these belong to conspicuous variation or the change that spirit of the present utility model extended out and still are among the protection domain of the present utility model.

Claims

1, a kind of one-way flow modulating valve, comprise valve body, valve gap and handwheel, valve seat, valve rod, the spool concentric with valve body, it is characterized in that: valve seat (13) is positioned between fluid input (11) top and fluid output (10) bottom, integral body is flat hollow cylinder, which is provided with sealing configuration (26,27,28); Have shroud (23) that are used for support guide cover (22) concentric on the valve seat (13) with valve body (12); Spool (14) end is provided with linear flow control device; Has double sealing structure (16,17) between guide sleeve (22) top and the valve rod (15); Valve body (12) adopts bolt fastening structure (20,21) with being connected of valve gap (18).

2, one-way flow modulating valve according to claim 1, it is characterized in that sealing configuration on the described valve seat (13) is to be used to place 2 grooves (27,28) that seal ring uses on valve seat (13) outer surface and to be used for the sealing surface (26) that contacts and cooperate with the sealing surface (24) of valve rod.

3, one-way flow modulating valve according to claim 2, it is characterized in that described shrouding (23) be by last ring (33), down ring (36) and between 4 windows (35) structure that constitutes of muscle (34).

4, one-way flow modulating valve according to claim 3 is characterized in that the linear flow control device of described spool (14) bottom is arranged on the isosceles trapezoidal structure (25) of spool (14) bottom.

5, one-way flow modulating valve according to claim 3 is characterized in that the linear flow control device of described spool (14) bottom is arranged on the parabolic structure of spool (14) bottom.

6, according to claim 4 or 5 described one-way flow modulating valve, it is characterized in that described double sealing structure (16,17) is arranged on the y-type seal ring between hole on the guide sleeve (29) and the valve rod (15) and is arranged in guide sleeve mesopore (30) groove (31) and the O RunddichtringO (16) between the valve rod (15).

7, one-way flow modulating valve according to claim 6 is characterized in that described guide sleeve (22) is one to have the cylindrical body of 3 concentric hole (29,31,32).

8, one-way flow modulating valve according to claim 7 is characterized in that described valve body (12), valve seat (13), valve rod (15), spool (14) and valve gap (18) are forge piece.