CN203880156U - Check valve capable of eliminating noise and preventing burst - Google Patents
Check valve capable of eliminating noise and preventing burst Download PDFInfo
- Publication number
- CN203880156U CN203880156U CN201420311793.4U CN201420311793U CN203880156U CN 203880156 U CN203880156 U CN 203880156U CN 201420311793 U CN201420311793 U CN 201420311793U CN 203880156 U CN203880156 U CN 203880156U
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- flap
- check valve
- valve body
- safety check
- link arm
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Abstract
The utility model provides a check valve capable of eliminating noise, removing pipeline vibration and preventing pipeline burst for solving the problems of existing check valves. The check valve comprises a rotary opening rod, a valve clack connecting arm, a valve clack and a check valve body. The rotary opening rod is connected to the inner wall of the check valve body. The two ends of the valve clack connecting arm are connected with the valve clack and the rotary opening rod. The parts, on the left side and the right side of the valve clack connecting arm, of the rotary opening rod are sleeved with a left spring and a right spring respectively. The end, adjacent to the valve clack connecting arm, of the left spring extends vertically downwards and is connected with a left arc-shaped piece. The end, adjacent to the valve clack connecting arm, of the right spring extends vertically downwards and is connected with a right arc-shaped piece. The left arc-shaped piece and the right arc-shaped piece jointly clamp the valve clack and apply downward reactive force to the valve clack so that opening of the valve clack can be delayed, or closing of the valve clack can be conducted ahead of time. The check valve has the technical advantages of being capable of eliminating the impact of the valve clack on the valve body, eliminating noise, preventing pipeline vibration and pipeline burst and saving pipeline investment cost.
Description
Technical field
The utility model belongs to plumbing, fluid field, is specifically related to a kind of safety check of noiseless explosion-proof.
Background technique
Safety check, claims again one-way valve or Swing check valve, is to rely on the power of fluid that the flap in valve body 3 is pushed open the valve of the unidirectional outflow of fluid.
The structure of existing safety check has valve body 4, revolves and open bar 1, link arm 2, flap 3, positioning ring 14, valve gap 5, and referring to Fig. 1 and Fig. 2, there is water intake 6 axial one end of check valve body 4, and the axial the other end of valve body 4 has water outlet 7.On the inwall near the valve body 4 of water intake 6 one sides, be connected with to revolve and open bar 1, described in revolve and open bar 1 and be positioned on the horizontal plane vertical with the water inlet direction of water intake 6.One end of link arm 2 is connected with flap 3, and the other end of link arm 2 is flexibly connected with revolving the axial middle part of opening bar 1, refers to Fig. 2.The flap 3 that link arm 2 connects, under self gravitation effect, covers on inlet valve doorway 16 vertically, and in conventionally using, safety check is connected with pipeline with suction booster: suction booster is arranged on a side on safety check inlet valve doorway 6.The piping network installation consisting of pipeline is in a side of safety check water outlet 7.When suction booster is normally worked; The pressure of pumping hole should be greater than ductwork pressure, and flap 3 is pushed open by fluid, safety check one-way conduction.And after suction booster is closed, the pressure of pumping hole one side progressively diminishes, when pump intake pressure is less than the pressure of pipe network, so the fluid backwater of safety check water outlet 7 one sides (also claiming to backflow), fluid return force is closed flap 3, and safety check is dammed.In addition, facts have proved: the pipeline of safety check water outlet 7 one sides is longer, and pipe diameter is larger, when its fluid returns, impact force is just larger.According to test, safety check water outlet 7 one side liquid return forces, while impacting flap 3, because liquid can not be pressed place, 5-7 is boosted moment doubly in pipeline Inner portion.Therefore, rely on the fluid return force of safety check water outlet 7 one sides to promote flap 3 throttle downs, and then to realize the working method that valve dams be danger close, when fluid return force impacts, light valve sound large (80-150 decibel left and right) is heavy to cause pumping hole to break strong, pipe vibration, pipe deforming displacement, heavy cause pipe explosion.For this reason, when design and manufacture pump valve, often by increasing the mode of pump valve mechanical strength, strengthen safety coefficient, in fact, increasing simply pump valve and duct thickness is the way of curing the symptoms, not the disease, fluid return force, moment can make pipe interior boost 5-7 doubly, and once have an accident, consequence is more miserable.The defect of Here it is conventional safety check.In sum, on market, be badly in need of simple in structurely, can remove fluid return force and impact, eliminate the product of pipe safety hidden danger.
Summary of the invention
The problems referred to above that exist in order to remove existing safety check, the utility model provides a kind of safety check of noiseless explosion-proof, and its concrete structure is:
Time valve that a kind of noiseless explosion-proof stops; Comprise revolving and open bar 1, flap link arm 2, flap 3, check valve body 4 and safety check valve gap 5.Described check valve body 4 is approximate circle tubulose; Axial one end in check valve body 4 has safety check water intake 6, the axial the other end at valve body 4 has safety check water outlet 7, axial middle part in check valve body 4 is provided with annular valve doorway 16, in the side towards safety check water outlet 7 and be positioned at and be provided with one on the inwall of the check valve body 4 above annular valve doorway 16 and revolve and open bar 1.Described revolving opened bar 1, is positioned on the vertical horizontal plane of the water inlet direction of safety check water intake 6.One end of flap link arm 2 is connected with flap 3, the other end of flap link arm 2 with revolve the shaft that opens bar 1,, revolve the axial middle part of opening bar 1 and be flexibly connected.The flap 3 being connected with flap link arm 2 covers vertically on the circular hole on annular valve doorway 16 under self gravitation effect, and flap 3 opens bar 1 Unscrew around revolving under the thrust of the fluid entering from safety check water intake 6.
Revolving of flap link arm 2 left sides, open cover on bar 1 and have a left spring 8; Vertically extend the end of the left spring 8 adjacent with check valve body 4, and be against on the inwall of check valve body 4; Extend straight down left spring 8 ends adjacent with flap link arm 2 and end is connected with left side arcuate member 9; Described left side arcuate member 9 is crooked towards the direction of flap 3;
Revolving of flap link arm 2 right sides, open cover on bar 1 and have a right spring 10; The end of the right spring 10 adjacent with check valve body 4 is extended straight up and is against on the inwall of check valve body 4; Spring 10 ends adjacent with flap link arm 2 are extended straight down and end is connected with right side arcuate member 11; Described right side arcuate member 11 is crooked towards the direction of flap 3;
Left side arcuate member 9 and right side arcuate member 11 are jointly seized flap 3 on both sides by the arms.When flap 3 is around revolving when opening bar 1 upwards upset being opened, the left side arcuate member 9 being connected with left spring 8 be connected right side arcuate member 11 with right spring 10 and jointly give flap 3 downward reaction force, during conveying fluid; Reaction force deferrable the unlatching of stablizing flap 3, when dam; Reaction force makes flap 3 closed in advance.
Furtherly, the cross section of valve gap 5 is curved.Between check valve body 4 and safety check valve gap 5, be provided with a rubber seal 12, between rubber seal 12 and safety check valve gap 5, be provided with a rubber ball 13.Rubber seal one side, the air compressibility in rubber ball, can not press Shrink to create space to liquid.
useful technique effect
The left and right side arcuate member 9 and 11 of this product, under the elastic force effect of spring separately, seizes flap 3 on both sides by the arms jointly.When flap 3 is around revolving when opening bar 1 upwards upset being opened, the left side arcuate member 9 being connected with left spring 8, is connected right side arcuate member 11 with right spring 10 and jointly gives flap 3 downward reaction force, and the reaction force enhancing along with the increase of flap 3 opening angles.Along with flap 3 reducing of opening angle, reaction force weakens.
Through lot of experiments, know, after termination of pumping, in 0.2 to 0.4 second, the pressure of pumping hole and the pressure of pipe network maintain an equal level.Now, the fluid of pipe interior does not advance, and stands fast yet.(once surpass during this period of time, balance is broken) bright spot of the present invention; At pipe interior fluid, do not advance exactly, stand fast 0.2-0.4 in second yet, by the power of spring 8 and spring 10, promote flap 3 and cover on the endoporus on annular valve doorway 16.Owing to having changed the mode that promotes flap 3 power.Avoid the returning of fluid of safety check water outlet 7 one sides, also avoided flap 3 to clash into annular valve doorways 16.
In addition, while maintaining an equal level due to the pressure of pumping hole and the pressure of pipe network, according to pipeline length, installation form is different, and still there is actuation fluid in pipeline Inner portion.Therefore, safety check valve gap 5 forms main air storehouses 15 with rubber seal 12, and rubber ball secondary air storehouse 13 utilizes the compressibility of gas, has solved liquid incompressibility, when having absorbed pipeline Inner portion fluid and flowed with this, and the repercussions that boost that produce.
When flap 3 is closed, the activity of safety check water outlet 7 and pipe network fluid.Rubber seal 12 in this product is to the 5 direction generation deformation of safety check valve gap, the impact to flap 3 when slowing down safety check water outlet 7 one sides and returning water, thus weaken 3 pairs of annular valve doorway 16 impact forces of flap.Ball 13 is also responsible for recovering the power of deformation to rubber seal 12 simultaneously.While having realized thus safety check action, can effectively " abate the noise, eliminate pipe vibration, prevent pipeline burst ".While it is pointed out that diameter (DN) when safety check is in 100mm, spring structure can be adopted separately and without rubber seal 12 and ball 13.
Noiseless explosion-proof safety check, the shock absorbing explosion-proof of can effectively eliminating the noise, release fluids pipeline Inner pressure surge, has avoided the meeting of pipeline moment booster, and pipe safety coefficient is significantly improved, and then saves pipeline investment cost.
Accompanying drawing explanation
Fig. 1 is the simple view of conventional construction safety check internal structure.
Fig. 2 revolves the annexation schematic diagram that opens bar 1, flap link arm 2 and flap 3 in Fig. 1.
Fig. 3 is the simple view of internal structure of the present utility model.
Fig. 4 is that Fig. 2 adds the annexation schematic diagram after this novel described left spring 8, left side arcuate member 9, right spring 10 and right side arcuate member 11.
Fig. 5 is left spring in Fig. 48 and the schematic perspective view of left side arcuate member 9.
Fig. 6 is right spring 10 in Fig. 4 and the schematic perspective view of right side arcuate member 11.
Sequence number in figure is: revolve and open bar 1, flap link arm 2, flap 3, check valve body 4, safety check valve gap 5, safety check water intake 6, safety check water outlet 7, left spring 8, left side arcuate member 9, right spring 10, right side arcuate member 11, rubber seal 12, ball 13, positioning ring 14, air bin 15, annular valve doorway 16.
concrete mode of execution
Now be described with reference to the accompanying drawings structural principle of the present utility model.
Referring to Fig. 4, a kind of noiseless explosion-proof safety check, comprises revolving and opens bar 1, flap link arm 2, flap 3, check valve body 4 and safety check valve gap 5.Described check valve body 4 is approximate circle tubulose and horizontal; Axial one end in check valve body 4 has safety check water intake 6, the axial the other end in check valve body 4 has safety check water outlet 7, at the axial middle part of check valve body 4, be provided with an annular valve doorway 16, by toroidal membrane 16, check valve body 4 is divided into inside and outside two parts: the inner chamber being connected with safety check water intake 6 and the exocoel being connected with safety check water outlet 7, communicate the inner chamber being connected with safety check water intake 6 by the endoporus on annular valve doorway 16 with the exocoel that safety check water outlet 7 is connected.Revolve and open bar 1 being provided with one on inwalls safety check water outlet 7 one sides and that be positioned at the check valve body 4 above toroidal membrane.Described revolving opened bar 1 and is positioned on the horizontal plane perpendicular with the water inlet direction of safety check water intake 6.One end of flap link arm 2 is connected with flap 3, the other end of flap link arm 2 with revolve the rod body movement that opens bar 1 and be connected.The flap 3 being connected with flap link arm 2 covers vertically on the endoporus on annular valve doorway 16 under self gravitation effect, blocks the connection between inside and outside chamber.When flap 3 under the thrust of the fluid flowing into from safety check water intake 6 around revolving while opening bar 1 Unscrew, inside and outside chamber communicates.In addition:
Referring to Fig. 3, revolving of flap link arm 2 left sides, opening cover on bar 1 has a left spring 8.The end of the left spring 8 adjacent with check valve body 4 is extended straight up and is against on the inwall of check valve body 4, refers to Fig. 4.Extend straight down the end of the left spring 8 adjacent with flap link arm 2 and end is connected with left side arcuate member 9.Left side arcuate member 9 is crooked towards the direction of flap 3, refers to Fig. 3 and Fig. 5.
Referring to Fig. 3, revolving of flap link arm 2 right sides, opening cover on bar 1 has a right spring 10.The end of the right spring 10 adjacent with check valve body 4 is extended straight up and is against on the inwall of check valve body 4, with reference to figure 4.Right spring 10 ends adjacent with flap link arm 2 are extended straight down and end is connected with right side arcuate member 11.Right side arcuate member 11 is crooked towards the direction of flap 3, refers to Fig. 3 and Fig. 6.
Referring to Fig. 3, the curved part of the curved part of left side arcuate member 9 and right side arcuate member 11 is seized flap 3 on both sides by the arms jointly.Referring to Fig. 4, when flap 3 is around revolving when opening bar 1 upwards upset being opened, the left side arcuate member 9 being connected with left spring 8 with is connected right side arcuate member 11 with right spring 10 and jointly gives flap 3 downward reaction force, the unlatching of postponement flap 3 or shift to an earlier date the closure of flap 3.
Referring to Fig. 4, the cross section of safety check valve gap 5 is curved.Between check valve body 4 and safety check valve gap 5, be provided with a rubber seal 12, between rubber seal 12 and safety check valve gap 5, be provided with a ball 13.
Referring to Fig. 3, and revolve the end of opening the flap link arm 2 that bar 1 is adjacent and take the shape of the letter U.In the U-shaped end of flap link arm 2, be provided with positioning ring 14, positioning ring 14 opens bar 1 shaft middle part and is fixedly connected with revolving.
This structure is specifically used on the safety check that model is H44 and detects and compare, and the safety check of the H44 type of embryonal structure relies on that fluid return force promotes flap 3 and throttle down makes pipeline Inner portion produce former working pressure 5-7 times expansive force moment, produces noise.And this product promotes flap 3 by spring auxiliary force, throttle down, and by air bin 15 and pressure ball 13 structures, with gas compressibility extraction duct liquid pressure rise repercussions; Fundamentally removed pipe safety hidden danger; Eliminate valve sound, eliminated pipe vibration and distortion, eliminated pipeline burst and blast.Pump valve and pipeline configuration size can be according to technical standards, and safety coefficient is pressed lower limit and carried out, and invention and the application of noiseless explosion-proof safety check, can save pipeline investment cost 30%.Guarantee pipeline long-term stability.
Claims (3)
1. a safety check for noiseless explosion-proof, comprises revolving and opens bar (1), flap link arm (2), flap (3), check valve body (4) and safety check valve gap (5); Described check valve body (4) is approximate circle tubulose; In axial one end of check valve body (4), have safety check water intake (6), at the axial the other end of check valve body (4), have safety check water outlet (7), at the axial middle part of check valve body (4), be provided with an annular valve doorway (16); In the side towards safety check water outlet (7) and be positioned at and be provided with one on the inwall of check valve body (4) of annular valve doorway (16) top and revolve and open bar (1); One end of flap link arm (2) is connected with flap (3), the other end of flap link arm (2) with revolve the rod body movement that opens bar (1) and be connected; The flap (3) being connected with flap link arm (2) covers vertically on the circular hole of annular valve doorway (16) under self gravitation effect, and flap (3) opens bar (1) Unscrew around revolving under the thrust of the fluid entering from safety check water intake (6); It is characterized in that:
Revolving of flap link arm (2) left side, open the upper cover of bar (1) and have a left spring (8); Vertically extend the end of the left spring (8) adjacent with check valve body (4), and be against on the inwall of check valve body (4); Extend straight down left spring (8) end adjacent with flap link arm (2) and end is connected with left side arcuate member (9); Described left side arcuate member (9) is crooked towards the direction of flap (3);
Revolving of flap link arm (2) right side, open the upper cover of bar (1) and have a right spring (10); The end of the right spring (10) adjacent with check valve body (4) is extended straight up and is against on the inwall of check valve body (4); Spring (10) end adjacent with flap link arm (2) extended straight down and end is connected with right side arcuate member (11); Described right side arcuate member (11) is crooked towards the direction of flap (3);
By left side arcuate member (9) and right side arcuate member (11), jointly flap (3) is seized on both sides by the arms; When flap (3) is around revolving when opening bar (1) upwards upset being opened, the left side arcuate member (9) being connected with left spring (8) is connected right side arcuate member (11) and jointly gives flap (3) downward reaction force with right spring (10), postpone the unlatching of flap (3) or fulfil the closure of flap (3) ahead of schedule.
2. the safety check of a kind of noiseless explosion-proof as claimed in claim 1, is characterized in that: the cross section of safety check valve gap (5) is curved; Between check valve body (4) and safety check valve gap (5), be provided with a rubber seal (12), between rubber seal (12) and safety check valve gap (5), be provided with a ball (13).
3. the safety check of a kind of noiseless explosion-proof as claimed in claim 1, is characterized in that: with revolve the end of opening the flap link arm (2) that bar (1) is adjacent and take the shape of the letter U; In the U-shaped end of flap link arm (2), be provided with positioning ring (14), positioning ring (14) opens bar (1) shaft middle part and is fixedly connected with revolving.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420311793.4U CN203880156U (en) | 2014-06-12 | 2014-06-12 | Check valve capable of eliminating noise and preventing burst |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420311793.4U CN203880156U (en) | 2014-06-12 | 2014-06-12 | Check valve capable of eliminating noise and preventing burst |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203880156U true CN203880156U (en) | 2014-10-15 |
Family
ID=51680654
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420311793.4U Expired - Fee Related CN203880156U (en) | 2014-06-12 | 2014-06-12 | Check valve capable of eliminating noise and preventing burst |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203880156U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105135005A (en) * | 2015-08-14 | 2015-12-09 | 南通市电站阀门有限公司 | Rotary starting type check valve of water hammer prevention mechanism for pipelines |
| CN106090342A (en) * | 2016-08-29 | 2016-11-09 | 方正阀门集团(温州)机械制造有限公司 | The check-valves of anti-low-flow vibration |
-
2014
- 2014-06-12 CN CN201420311793.4U patent/CN203880156U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105135005A (en) * | 2015-08-14 | 2015-12-09 | 南通市电站阀门有限公司 | Rotary starting type check valve of water hammer prevention mechanism for pipelines |
| CN106090342A (en) * | 2016-08-29 | 2016-11-09 | 方正阀门集团(温州)机械制造有限公司 | The check-valves of anti-low-flow vibration |
| CN106090342B (en) * | 2016-08-29 | 2019-01-04 | 方正阀门集团(温州)机械制造有限公司 | The check-valves of anti-low-flow vibration |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141015 Termination date: 20160612 |
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| CF01 | Termination of patent right due to non-payment of annual fee |