CN207437853U - Quickly block check-valves - Google Patents

Abstract

The utility model is related to valve fields, and in particular to one kind quickly blocks check-valves.The quick check-valves that blocks includes valve deck, valve body, flap, cylinder sleeve, spring and bypass line, and cylinder sleeve is arranged in the cavity of valve deck and valve body, and the upper end of flap is arranged on inside cylinder sleeve and is moved in a straight line in cylinder sleeve, and the area of flap upper end is more than the area of lower end；Spring is between valve deck and flap；The first through hole along the flap direction of motion is provided on flap；Bypass line includes sequentially connected block valve, conduit and check-valves；One end of bypass line is connected with the second through hole being arranged on valve deck, the outlet of the other end and valve body.The utility model solves the problems, such as that existing check-valves cannot quickly block pipe-line system, not possess check function, and provide it is a kind of can realize it is quick block and possess the quick of check function block check-valves.

Description

Quickly block check-valves

Technical field

The utility model is related to valve fields, and in particular to one kind quickly blocks check-valves.

Background technology

In the prior art, it is many for blocking the valve of fluid, such as gate valve and shut-off valve, such valve generally return Turn linear motion, due to being moved by screw thread rotation band dynamic seal, for each revolution sealing element only promoted spiral shell square away from From so this kind of valve opening and shut-in time are longer；Other cut-out cocks such as ball valve and butterfly valve, although making 90 degree when opening and closing Rotary motion, theoretically the open and close time is fast, but since the open and close torque of such valve is bigger, generally requires auxiliary and drive Dynamic device increases torque opening/shutting valve, such as worm reducer, so affects opening and closing speed, when pipeline is run into promptly During accident, then pipeline fluid cannot be quickly blocked.In addition, above-mentioned valve does not possess check function, just must separately be filled on pipeline Check-valves so not only adds cost, and is also required to the installation space of bigger.

Utility model content

The purpose of this utility model is that pipeline fluid cannot quickly be blocked, not possess check function by solving existing block valve The problem of, and provide it is a kind of can realize it is quick block and possess the quick of check function block check-valves.

The technical solution of the utility model is：

One kind quickly blocks check-valves, including valve deck, valve body and flap, further includes cylinder sleeve, spring and bypass line, described Cylinder sleeve is arranged in the cavity of valve deck and valve body, and the upper end of the flap is arranged on inside cylinder sleeve, and straight line fortune is done in cylinder sleeve Dynamic, the area of the flap upper end is more than the area of lower end；The spring is between valve deck and flap；It is set on the flap There is the first through hole along the flap direction of motion；The bypass line includes sequentially connected block valve, conduit and check-valves；It is described One end of bypass line is connected with the second through hole being arranged on valve deck, the outlet of the other end and valve body.

Further, the valve body bottom is provided with the through hole of discharge valve inner precipitated mud and sand, and through hole is sealed using pipe plug It is stifled.

Further, in order to make valve that there is good sealing performance, the contact surface of the cylinder sleeve and flap relative motion On be provided with the first sealing ring.

Further, in order to make valve that there is good sealing performance, set on the seal face of the flap and valve body There is the second sealing ring.

Further, in order to make valve that there is good sealing performance, gasket is provided between the cylinder sleeve and valve deck.

Further, the valve body is the valve body of upper end opening, and the valve deck closes the open end of valve body, the valve body Inlet and outlet both ends be respectively equipped with feed pathway and liquid outlet channel, the open end of the feed pathway and liquid outlet channel with valve body Connection, the flap is arranged on the open end of valve body, and feed pathway and liquid outlet channel are blocked when valve is closed.

Further, the valve deck and valve body pass through Stud connection.

Further, the valve deck and valve body are made of spheroidal graphite cast-iron or cast steel, the flap using spheroidal graphite cast-iron or Stainless steel is made, and cylinder sleeve is made of stainless steel.

Further, the flap is I-shape construction.

Further, the upper end of the flap is provided with boss, and one end of spring is sleeved on boss.

The advantages of the utility model is：

1. the block valve in the utility model bypass line is closed, flap upper and lower side pressure is consistent, because of flap upper and lower side Area is different, according to pressure law directly proportional to area and pressure, at this time the pressure of flap upper end more than flap lower end pressure, Fluid forces flap quickly moves down, and realizes the quick closedown of valve, and the closing of valve comes voluntarily completely by the pressure of fluid Control；During opening/shutting valve, the block valve in bypass line need to be only operated it is achieved that so i.e. time saving and laborsaving, operation letter It is single.

2. for the utility model before flap unlatching, flap upper end is filled with fluid, and flap upwardly opens, and needs flap The fluid of upper end is squeezed out from the second through hole of valve deck, therefore the flap process of upwardly opening will slowly be carried out；Valve is slowly opened It opens, it can be to avoid the destruction of the water hammer that generates directly to pipeline and duct element when starting water pump.

3. the utility model provide a kind of good seal performance, economical and practical, easy to operate etc. combine in block, integrated check Valve, and will close soon, it is slow open, non-return, the function integrations such as self sealss, not only can quickly block pipeline fluid in operating mode and And it is also possible to prevent reverse flow of fluids.

Description of the drawings

Fig. 1 is the structure chart that the utility model embodiment blocks check-valves.

Reference numeral：1- check-valves, 2- conduits, 3- block valves, 4- valve decks, 5- springs, 6- gaskets, 7- studs, 8- cylinders Set, the first sealing rings of 9-, 10- flaps, the second sealing rings of 11-, 12- pipe plugs, 13- valve bodies, the second through holes of 14-, 15- first are logical Hole.

Specific embodiment

The technical solution of the utility model is clearly fully described by with reference to Figure of description.

It is applied to can be used for water delivery, water distribution, stone in the industries such as municipal administration, water conservancy, sewage disposal the utility model is related to one kind Valve in the distributing systems such as oil, chemical industry fluid and sewage pump plant.

One kind as shown in Figure 1 quickly blocks check-valves, including valve deck 4, valve body 13, flap 10, cylinder sleeve 8,5 and of spring Bypass line, valve body 13 are the valve body of upper end opening, and valve deck 4 closes the open end of valve body 13, the inlet and outlet both ends of valve body 13 Feed pathway and liquid outlet channel are respectively equipped with, the open end of feed pathway and liquid outlet channel with valve body 13 connects, and flap 10 exists When valve is closed feed pathway and liquid outlet channel, cylinder sleeve 8 is blocked to be arranged in the cavity of valve deck 4 and valve body 13, flap 10 is specific For I-shape construction, the upper end of flap 10 is arranged on inside cylinder sleeve 8, and is moved in a straight line in cylinder sleeve, the face of 10 upper end of flap Product is more than the area of lower end；13 bottom of valve body is provided with the through hole of discharge 13 bottom deposit silt particle of valve body, and through hole uses pipe plug 12 Closure；Spring 5 is between valve deck 4 and flap 10, and the upper end of flap 10 is provided with boss, and one end of spring 5 is sleeved on boss On, the first through hole 15 along the flap direction of motion is provided on flap 10；Valve deck 4 and valve body 13 are connected by stud 7, valve deck 4 It is made with valve body 13 of spheroidal graphite cast-iron or cast steel, flap 10 is made of spheroidal graphite cast-iron or stainless steel, and cylinder sleeve 8 uses stainless steel It is made；Bypass line includes sequentially connected block valve 3, conduit 2 and check-valves 1；The block valve 3 of bypass line is with being arranged on valve The second through hole 14 on lid 4 connects, the outlet of check-valves 1 and valve body 13；Bypass line, the second through hole of valve deck 14, flap First through hole 15 forms fluid passageway with valve body 13.

The is provided in order to make valve that there is good sealing performance, on the contact surface of 10 relative motion of cylinder sleeve 8 and flap One sealing ring 9, flap 10 are provided with being provided with the second sealing ring 11 on the seal face of valve body 13 between cylinder sleeve 8 and valve deck 4 Gasket 6.

Opening：The utility model uses plunger valve valve structure, and flap 10 is made by the pressure of medium during valve opening and closing It vertically moves up and down.When pipe-line system normal operation, open block valve 3, fluid flow direction quickly blocks check-valves, flap 10 by To the pressure from fluid, be caused to move upwardly, before being opened due to flap 10,10 upper end of flap is filled with fluid, flap 10 to Upper unlatching then needs to squeeze out the fluid of 10 upper end of flap from the second through hole of valve deck 14, and such flap 10, which upwardly opens, in the process will It is slowly to carry out.The slow unlatching of valve, can be to avoid the water hammer that generates when starting water pump directly to pipeline and duct element Destruction.During valve opening, a part of fluid from valve inlet end by 13 inner cavity of valve body flow directly into valve export end to Pipeline, another part fluid flow to flap 10 by valve inlet end from valve body 13, and valve deck is flowed by flap first through hole 15 4, block valve 3 is flowed through using the second through hole of valve deck 14, then valve export is entered to pipeline by conduit 2 and check-valves 1.

Block state：When needing to close valve, block valve 3 is directly closed, flows into flap from flap first through hole 15 at this time The fluid of 10 upper ends can not be discharged from block valve 3, and the pressure of 10 upper end of flap starts to build up, since the area of 10 upper end of flap is big Area in 10 lower end of flap, when the pressure of 10 upper end of flap is more than 10 times end pressures of flap, fluid forces flap 10 is downward It is mobile, until being bonded completely with 13 sealing position of valve body, formed and closed；This process is completed in a short period of time, is so being sent out When making trouble former, pipeline fluid can also be promptly blocked, ensures pipe safety operation.

Non-return state：The water flow impulsion power that unexpected termination of pumping is brought in conduit running is very big, can not only water pump be caused acutely to shake The dynamic and damage that brings, it is also possible to can allow water pump high speed reverse rotation, motor is again started up, can allow rotor be permanently deformed or Burn out motor.Therefore when water pump shuts down, flow backwards for anti-non-return water, valve needs to have automatic closing function, this practicality It is new it is quick block check-valves reality the process of anti-backflow be automatically closed be：When pipeline needs out of service or unexpected power-off to stop During pump, the Fluid pressure for flowing through valve is instantaneously zero, and flap 10 is under the action of 5 compression stress of spring and self gravitation, quickly It is returned on the valve seat on valve body 13 and forms sealing, due to the effect of check-valves 1, return water cannot enter flap by bypass line 10 upper ends, at this moment valve completely close, the effect of the non-return of valve is for avoiding return water water hammer to water pump and other pipelines member Part destruction, so as to meet the needs of people's life.

Claims (10)

1. one kind quickly blocks check-valves, including valve deck (4), valve body (13) and flap (10), it is characterised in that：Further include cylinder sleeve (8), spring (5) and bypass line,

The cylinder sleeve (8) is arranged in the cavity of valve deck (4) and valve body (13), and the upper end of the flap (10) is arranged on cylinder sleeve (8) it is internal, and moved in a straight line in cylinder sleeve (8), the area of flap (10) upper end is more than the area of lower end；

The spring (5) is located between valve deck (4) and flap (10)；

First through hole (15) is provided on the flap (10)；

The bypass line includes sequentially connected block valve (3), conduit (2) and check-valves (1)；

One end of the bypass line is connected with the second through hole (14) being arranged on valve deck (4), the other end and valve body (13) Outlet.

2. according to claim 1 quickly block check-valves, it is characterised in that：Valve body (13) bottom is provided with discharge The through hole of valve inner precipitated mud and sand, through hole are blocked using pipe plug (12).

3. according to claim 2 quickly block check-valves, it is characterised in that：The cylinder sleeve (8) and flap (10) are opposite The first sealing ring (9) is provided on the contact surface of movement.

4. quickly block check-valves according to claim 1 or 2 or 3, it is characterised in that：The flap (10) and valve body (13) the second sealing ring (11) is provided on seal face.

5. according to claim 4 quickly block check-valves, it is characterised in that：It is set between the cylinder sleeve (8) and valve deck (4) It is equipped with gasket (6).

6. according to claim 5 quickly block check-valves, it is characterised in that：The valve body (13) is the valve of upper end opening Body, the valve deck (4) close the open end of valve body (13), and the inlet and outlet both ends of the valve body (13) are respectively equipped with feed pathway And liquid outlet channel, the open end of the feed pathway and liquid outlet channel with valve body (13) connect, the flap (10) is arranged on The open end of valve body (13), and feed pathway and liquid outlet channel are blocked when valve is closed.

7. according to claim 6 quickly block check-valves, it is characterised in that：The valve deck (4) and valve body (13) pass through Stud (7) is fixedly connected.

8. according to claim 7 quickly block check-valves, it is characterised in that：The valve deck (4) and valve body (13) use Spheroidal graphite cast-iron or cast steel are made, and the flap (10) is made of spheroidal graphite cast-iron or stainless steel, and cylinder sleeve (8) uses stainless steel Into.

9. according to claim 8 quickly block check-valves, it is characterised in that：The flap (10) is I-shape construction.

10. according to claim 9 quickly block check-valves, it is characterised in that：The upper end of the flap (10) is provided with Boss, one end of spring (5) are sleeved on boss.