CN202302238U

CN202302238U - Vacuum control valve

Info

Publication number: CN202302238U
Application number: CN2011204288950U
Authority: CN
Inventors: 陈国栋; 王艳; 左彦东; 姜广辉; 李酉; 刘晓龙; 郑金霞; 林常源
Original assignee: Shandong Huateng Environmental Protection Automation Co Ltd
Current assignee: Shandong Huateng Environmental Protection Automation Co Ltd
Priority date: 2011-11-02
Filing date: 2011-11-02
Publication date: 2012-07-04
Anticipated expiration: 2021-11-02

Abstract

The utility model discloses a vacuum control valve which comprises a rubber valve clack. The rubber valve clack is internally provided with an upper fin and a lower fin. The rubber valve clack is externally provided with a projected rib and an outer fin. The upper fin, the lower fin and the outer fin of the rubber valve clack causes the inner part of the valve clack to form an upper plane and a lower plane; the upper fin and the lower fin are closely jointed for forming a sealing line I; the upper plane is provided with a projection I; the lower plane is provided with a projection II; two ends of the projection I and the projection II are cut off at the positions of the corresponding outer fin; the projection I and the projection II are symmetrical relative to a horizontal plane which is formed by the sealing line I and the valve axis and are staggered along an axis direction of the valve; the projection I and the inside part of the rubber valve clack form a sealing line II; the projection II and the projection I form a sealing line III; a chamber I is formed between the sealing line I and the sealing line II; and a chamber II is formed between the sealing line II and the sealing line III.

Description

Vacuum control valve

Technical field

The utility model relates to a kind of vacuum conveying technology field, particularly a kind of vacuum control valve.

Background technique

Vacuum conveying system is that a kind of vacuum effect is shifted the closed system that is delivered to other places with materials such as some particles, liquid, is exactly that a kind of typical vacuum is carried case such as the vacuum sewage system of carrying sanitary wastewater.The degree of vacuum of general vacuum conveying system inside is all in the coarse vacuum scope; No more than 80KPa; The valve that is applied to vacuum conveying system has some particularity, such as automatically control, open and close frequent, open and close rapidly, good seal etc. between spool and the valve seat, such requirement is to carry rapidly in order to reach; Reduce vacuum leak, guarantee the normal effectively purpose of operation of whole system.The valve that is used for vacuum conveying system all is a kind of special-purpose member of specialized designs exploitation usually; For example the vacuum control valve in file US6575425B1 and US2006/0237075A1 is unlatching and a closure of utilizing the pressure difference realization valve of self structure and atmosphere and vacuum system.In these two files, the sealing of vacuum control valve is that this sealing lines has just determined the quality of this valve seal effect at the inboard sealing lines that forms of rubber flap.The medium that vacuum conveying system is often carried has certain impurity, such as sanitary wastewater, in case therefore the shortcoming of this sealing means is that impurity rests on the potted line, will destroys sealing and cause valve leak.The velocity ratio of medium was very fast when vacuum was carried in addition, and is bigger to the wearing and tearing of valve passage, in case the rubber flap has uneven wearing and tearing also than being easier to destroy sealing.The clossing pressure of this vacuum control valve is the pressure reduction of atmosphere and vacuum system; Generally has only 20～70KPa (cracking pressure of valve is 15KPa); So little pressure makes the sealing of vacuum valve seem more fragile; Therefore the permanent fault of vacuum conveying system is exactly a valve leak, thereby brings the system vacuum loss, causes transfer efficiency to reduce even can not carry.The counter-measure that the vacuum valve leakage takes place is in time to change vacuum valve; And make the Vacuum Pumps Station continuous firing make great efforts to keep vacuum simultaneously; Therefore the sealing effect that improves vacuum valve as vacuum conveying system is a very crucial problem, this be of value to the improvement system performance, reduce rate of fault, save energy consumption and reduce maintenance cost.

Summary of the invention

The purpose of the utility model is exactly the easy problem of leaking of vacuum control valve that solves existing technology; A kind of vacuum control valve is provided; Have good sealing effect, reduce the effect of failsafe valve rate, saving system energy consumption, reduction maintenance cost and then improvement systematic function.

For realizing above-mentioned purpose, the utility model adopts following technological scheme:

A kind of vacuum control valve; Comprise the rubber flap, the inside of rubber flap is provided with fin, following fin, and the outside is provided with convex tendon, outer fin; The last fin of rubber flap, following fin, outer fin make inner formation of flap go up plane and lower plane; Last fin closely forms potted line I with following the two pressing of fin, and the said plane of going up is provided with protruding I, and lower plane is provided with protruding II; The two ends of said protruding I and protruding II end in the position of pairing outer fin; Said protruding I and protruding II are symmetry plane with potted line I and the formed horizontal plane of valve axis and are staggeredly arranged along the valve axis direction, the inboard potted line II that forms of protruding I and rubber flap, protruding II and protruding I formation potted line III; Form chamber I between potted line I and the potted line II, form chamber II between potted line II and the potted line III.The structure of three sealing lines and two chambers, significant sealing affection strengthens, even there is impurity to destroy wherein one or two potted lines, vacuum valve is leaked, and therefore the working life of vacuum valve and the tightness of sealing all are greatly improved.

Said protruding I or protruding II are triangles along the sectional shape of potted line direction, and leg-of-mutton top is a fillet, leg-of-mutton root and rubber flap rounding off, and wherein an end transition angle δ is 1＞90 °, 2＞150 ° of the other end transition angle δ.This structure makes protruding and the maximum rounding off of the inner formation of rubber flap; Rounding off is beneficial to the circulating resistance that reduces medium on the one hand; Reduce retaining of medium; Also can improve the wearing and tearing of medium to flap inside on the other hand, the improvement of this wearing and tearing embodies both ways as far as possible: when MEDIA FLOW was crossed flap inside, serious wearing and tearing mainly concentrated on protruding I and the protruding II triangular-section formed plane, long limit on the one hand; Bigger thickness is not participated in sealing and possessing in this plane, and the taking up wear ability is strong; Original on the other hand medium is to last fin, the impact and the wearing and tearing that produce of fin let protruding I and protruding II stop down, so the sealing effect of potted line I and life-span make moderate progress.

The sectional shape of protruding I and protruding II is identical.

Said potted line I, potted line II, potted line III are parallel.

Potted line I, potted line II, the vertical line of potted line III and valve axis form angle β 1, angle β 2, angle β 3, and each is unequal for angle β 1, angle β 2, angle β 3.Three sealing lines are formed by the various structure position; Three sealing lines are parallel to each other; But the compaction direction of sealing is all different, and the effect that such structure produces is that the wearing and tearing at three sealing positions are unequal, even some position serious wear; The effect that these wearing and tearing is produced because of the unequal effect at other positions is compensated more easily, and this compensation is beneficial to the working life that prolongs valve.

The beneficial effect of the utility model is: provide a kind of sealing effect good vacuum control valve, reduced vacuum control valve rate of fault, saved system energy consumption, reduced maintenance cost, improved the performance of vacuum conveying system.

Description of drawings

The valve seal structural drawing of Fig. 1 the utility model;

Fig. 2 rubber flap B-B sectional view;

Fig. 3 is an I place sealing configuration partial enlarged drawing among Fig. 1;

Fig. 4 is the stereogram of one of them direction of rubber flap;

Fig. 5 is another direction stereogram of rubber flap.

Among the figure, 1-valve connecting body I, 2-valve intermediate, 3-rubber flap, the 4-control chamber, 5-valve connecting body II, 6-gets vacuum port; The 7-antelabium, 8-convex tendon, 9-control chamber interface, 10-flange, the last fin of 11-, fin under the 12-, the outer fin of 13-; The protruding I of 14-, the protruding II of 15-, 16-potted line I, 17-potted line II, 18-potted line III, 19-vertical line; The 20-valve axis, 21-chamber I, 22-chamber II, the last plane of 23-, 24-lower plane, 25-root.

Embodiment

Below in conjunction with accompanying drawing and embodiment the utility model is further specified.

A kind of vacuum control valve, shown in Fig. 1～5, among the figure, 1-valve connecting body I, 2-valve intermediate, 3-rubber flap, 4-control chamber; 5-valve connecting body II, 6-gets vacuum port, 7-antelabium, 8-convex tendon, 9-control chamber interface, 10-flange, the last fin of 11-; Fin under the 12-, the outer fin of 13-, the protruding I of 14-, the protruding II of 15-, 16-potted line I, 17-potted line II, 18-potted line III; The 19-vertical line, 20-valve axis, 21-chamber I, 22-chamber II, the last plane of 23-, 24-lower plane, 25-root.The arrow on the right representes that medium and atmosphere inflow are held, the arrow on the left side is represented vacuum end among Fig. 1.The inside of rubber flap 3 is provided with fin 11, following fin 12; The outside is provided with convex tendon 8, outer fin 13; Last fin 11, fin 12, outer fin 13 form and go up plane 23 and lower plane 24 down; Last fin closely forms potted line I 16 with following the two pressing of fin, and the said plane of going up is provided with protruding I 14, and lower plane is provided with protruding II 15; The two ends of said protruding I 14 and protruding II 15 end in the position of pairing outer fin; Said protruding I 14 and protruding II 15 are symmetry plane with potted line I and valve axis 20 formed horizontal planes and are staggeredly arranged protruding I 14 and the rubber flap 3 inboard potted line II 17 that form, protruding II 15 and protruding I 14 formation potted line III 18 along the valve axis direction; Form chamber I 21 between potted line I 16 and the potted line II 17, form chamber II 22 between potted line II 17 and the potted line III 18.Said protruding I 14 or protruding II 15 are triangles along the sectional shape of potted line direction; Leg-of-mutton top is a fillet; Leg-of-mutton root 25 and rubber flap 3 rounding ofves, wherein an end transition angle δ is 1＞90 °, 2＞150 ° of the other end transition angle δ.This structure makes protruding and the maximum rounding off of rubber flap 3 inner formation; Rounding off is beneficial to the circulating resistance that reduces medium on the one hand; Reduce retaining of medium; Also can improve the wearing and tearing of medium to flap inside on the other hand, the improvement of this wearing and tearing embodies both ways as far as possible: cross flap when inner when MEDIA FLOW on the one hand, serious wearing and tearing mainly concentrate on the formed upward plane 23, long limit and lower plane 24 of protruding I 14 and protruding II 15 triangular-sections; Bigger thickness is not participated in sealing and possessing in these two planes, and the taking up wear ability is strong; Original on the other hand medium is to last fin, the impact and the wearing and tearing that produce of fin let protruding I 14 and protruding II 15 stop down, so the sealing effect of potted line I 16 and life-span make moderate progress.Protruding I 14 is identical with the sectional shape of protruding II 15.Said potted line I 16, potted line II 17, potted line III 18 are parallel.Potted line I 16, potted line II 17, the vertical line 19 of potted line III 18 forms angle β 1, angle β 2, angle β 3 with valve axis 20, and each is unequal for angle β 1, angle β 2, angle β 3.

Though the above-mentioned accompanying drawing that combines is described the embodiment of the utility model; But be not restriction to the utility model protection domain; One of ordinary skill in the art should be understood that; On the basis of the technological scheme of the utility model, those skilled in the art need not pay various modifications that creative work can make or distortion still in the protection domain of the utility model.

Claims

1. a vacuum control valve comprises the rubber flap, and the inside of rubber flap is provided with fin, following fin; The outside is provided with convex tendon, outer fin; The last fin of rubber flap, following fin, outer fin make inner formation of flap go up plane and lower plane, and last fin closely forms potted line I with following the two pressing of fin, it is characterized in that; The said plane of going up is provided with protruding I; Lower plane is provided with protruding II, and the two ends of said protruding I and protruding II end in the position of pairing outer fin, and said protruding I and protruding II are symmetry plane with potted line I and the formed horizontal plane of valve axis and are staggeredly arranged along the valve axis direction; The inboard potted line II that forms of protruding I and rubber flap, protruding II and protruding I form potted line III; Form chamber I between potted line I and the potted line II, form chamber II between potted line II and the potted line III.

2. vacuum control valve as claimed in claim 1; It is characterized in that; Said protruding I or protruding II are triangles along the sectional shape of potted line direction, and leg-of-mutton top is a fillet, leg-of-mutton root and rubber flap rounding off; Wherein an end transition angle δ is 1＞90 °, 2＞150 ° of the other end transition angle δ.

3. like claim 1 or 2 described vacuum control valves, it is characterized in that the sectional shape of said protruding I and protruding II is identical.

4. like claim 1 or 2 described vacuum control valves, it is characterized in that said potted line I, potted line II, potted line III are parallel.

5. vacuum control valve as claimed in claim 3 is characterized in that, said potted line I, potted line II, potted line III are parallel.

6. like claim 1 or 2 described vacuum control valves, it is characterized in that, potted line I, potted line II, the vertical line of potted line III and valve axis form angle β 1, angle β 2, angle β 3, and each is unequal for angle β 1, angle β 2, angle β 3.

7. vacuum control valve as claimed in claim 4 is characterized in that, potted line I, and potted line II, the vertical line of potted line III and valve axis form angle β 1, angle β 2, angle β 3, and each is unequal for angle β 1, angle β 2, angle β 3.