CN212338574U

CN212338574U - Micro-resistance non-return device in pipeline and micro-resistance butterfly-shaped non-return valve

Info

Publication number: CN212338574U
Application number: CN202021004728.9U
Authority: CN
Inventors: 包昕
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-06-04
Filing date: 2020-06-04
Publication date: 2021-01-12
Anticipated expiration: 2030-06-04

Abstract

The utility model relates to a little resistance non return device and little resistance butterfly check valve in pipeline. The check device comprises a valve plate shaft, wherein the left side and the right side of the valve plate shaft are respectively connected with a valve plate, the two valve plates are connected with the valve plate shaft through shaft sleeves, the valve plate shaft and the two valve plates incline towards the water inlet side of the pipeline, a limiting table is arranged on the inner wall of the water inlet side of the pipeline, a sealing gasket is arranged on the limiting table towards one side of the valve plate, and the peripheries of the two valve plates are in close contact with the sealing gasket. The micro-resistance butterfly check valve comprises a micro-resistance check device in a pipeline. The utility model relates to a water supply system water pump stops to supply water the back, and the non return butterfly valve technique of using by supplying water refluence has solved this non return butterfly valve water supply in-process resistance too big, the technical problem of the extravagant energy realizes little resistance water supply.

Description

Micro-resistance non-return device in pipeline and micro-resistance butterfly-shaped non-return valve

Technical Field

The utility model belongs to the technical field of the valve technique and specifically relates to a little resistance non return device and little resistance butterfly check valve in pipeline.

Background

The butterfly check valve is a valve which automatically opens and closes a valve plate by the flow of a medium and is used for preventing the medium from flowing backwards. At present, a check butterfly valve structure commonly used in a water supply system comprises a valve body, a longitudinal valve plate shaft and a spring shaft are arranged in the valve body, two valve plates are movably connected to the valve plate shaft, and a torsion spring is sleeved on the spring shaft. The valve plate is rotated by the elasticity of the spring to normally close the check butterfly valve. The spring pressure required for closing the butterfly valve is about 0.1-0.2 MPa, so that the water pump opens the check valve plate by using the impact pressure higher than the spring pressure to normally supply water during water supply, the water supply pressure loss is about 0.1-0.2 MPa, the operation cost is high, and the energy waste is large.

There is a need for a device installed in a pipe to prevent water from flowing backward after water supply is stopped.

Disclosure of Invention

The utility model aims at providing a little resistance non return device and little resistance butterfly check valve in pipeline, this non return device and check valve utilize valve plate self gravity and water pump to stop when supplying water play water in the twinkling of an eye backward flow impact and close the valve plate, have solved the problem that the check valve water supply in-process resistance is too big, the extravagant energy, realize that little resistance supplies water.

The technical scheme of the utility model:

the utility model provides a little resistance non return device in pipeline, includes the valve plate axle, and a valve plate is respectively connected to the valve plate axle left and right sides, and two valve plates pass through axle sleeve and valve plate hub connection, valve plate axle and two valve plates are to pipeline side slope of intaking, pipeline side inner wall of intaking is last to have a spacing platform, spacing platform is equipped with sealed the pad towards valve plate one side, two valve plate outsides and sealed pad contact.

The valve plate shaft and the included angle alpha between the two valve plates and the lower edge of the pipeline at the water supply side is larger than 45 degrees and smaller than 89 degrees.

The utility model provides a little resistance butterfly check valve, includes the valve body, establishes valve plate axle, valve plate, spacing platform and sealed the pad in the valve body, and a valve plate is respectively connected to valve plate axle both sides, the valve plate axle is connected with lateral wall about the valve body, and two valve plates pass through the axle sleeve cover epaxial at the valve plate, have a spacing platform on valve body inner wall circumference, spacing platform is equipped with sealed the pad towards valve plate one side, the outside and the sealed contact that fills up of two valve plates, valve plate axle, two valve plates, sealed pad and spacing platform incline to the side of intaking of valve body.

The valve plate shaft, the two valve plates, the sealing gasket, the limiting table and the lower edge of the water inlet side valve body form an included angle alpha which is larger than 45 degrees and smaller than 89 degrees.

The utility model has the advantages that:

1. the utility model relates to a water supply system water pump stops to supply water the back, and the non return butterfly valve technique of using by supplying water refluence has solved this non return butterfly valve water supply in-process resistance too big, the technical problem of the extravagant energy realizes little resistance water supply.

2. The application comprises a micro-resistance check device and a micro-resistance butterfly check valve in the pipeline. The micro-resistance non-return device in the pipeline can be directly arranged in the pipeline to play a role in opening and closing the pipeline. When the water pump stops supplying water, the water outlet flows back instantly to impact the valve plate to rotate towards the water return direction, meanwhile, the valve plate tilts backwards to rotate by the gravity of the valve plate to close the pipeline, the recoil force of supplying water pushes the valve plate to lock the pipeline, and the function of cutting off the water supply backflow is achieved.

3. When this application check valve in-service use, when the water pump stopped supplying water, the play water backward flow in the twinkling of an eye strikes the valve plate and rotates to the return water side, and the valve plate leans back self gravity center power simultaneously and rotates and close the check valve, and the recoil that supplies water promotes valve plate locking check valve, reaches and cuts the function that supplies water backward flow. Because this application check valve does not use the spring, can not make water supply pressure loss because of spring pressure during the event supplies water, realized that the resistance supplies water a little, reduce running cost, the purpose of energy saving.

Drawings

Fig. 1 is a schematic structural view of a micro-resistance check device in a pipeline according to the present application.

Fig. 2 is a reference diagram of the application of the micro resistance check device in the pipeline in the use state.

FIG. 3 is a schematic view of the structure of the micro-resistance butterfly check valve of the present application.

FIG. 4 is a cross-sectional view of the micro-resistance butterfly check valve of the present application.

FIG. 5 is a reference diagram illustrating the usage of the micro-resistance butterfly check valve of the present application.

Fig. 6 is a schematic view of a prior art butterfly check valve.

Detailed Description

The butterfly check valve at the present stage is structurally shown in fig. 6, and comprises a valve body 1, wherein a longitudinal valve plate shaft 2 and a spring shaft are arranged in the valve body 1, two valve plates 3 are movably connected to the valve plate shaft, a torsion spring 9 is sleeved on the spring shaft, a limiting table is arranged on the circumference of the inner wall of the water inlet side of the valve body, the outer portion of each valve plate is arranged on the limiting table and used for limiting when the valve plates are closed in a rotating mode, and the valve plates are rotated by means of the elasticity of the spring to normally close the check. The spring pressure required for closing the butterfly valve is about 0.1-0.2 MPa. When water is supplied, the water pump opens the check valve plate by using the impact pressure higher than the spring pressure to normally supply water, the water supply pressure loss is about 0.1-0.2 MPa, the operation cost is high, and the energy waste is large.

The present application will now be described in detail with reference to the accompanying drawings:

the application comprises a micro-resistance check device and a micro-resistance butterfly check valve in the pipeline. Both function equally, i.e. to open and close the duct.

As shown in fig. 1 and 2, a micro-resistance non-return device in pipeline comprises a valve plate shaft 2, wherein a valve plate 3 is respectively connected to the left side and the right side of the valve plate shaft 2, the inner sides of the two valve plates 3 are connected with the valve plate shaft through a shaft sleeve 4, the valve plate shaft and the two valve plates incline towards the water inlet side of a pipeline 7, a limiting table 5 is arranged on the inner wall of the water inlet side of the pipeline 7, a sealing gasket 6 is arranged on the limiting table 5 towards one side of the valve plate, and the outer sides of the two valve plates 3 are arranged on the sealing gasket and are in.

The included angle alpha between the valve plate shaft 2 and the lower edge of the pipeline on the water supply side and the two valve plates 3 is more than 45 degrees and less than 89 degrees.

The direction indicated by the arrow in fig. 2 is the water flow direction. During the use, little resistance non return device installs in the pipeline in this application pipeline for opening and closing of control pipeline. When the valve plate shaft is used, the two ends of the valve plate shaft can be fixedly connected with the upper pipe wall and the lower pipe wall of the pipeline or connected with the pipeline through bolts, and the valve plate shaft and the two valve plates incline towards the water supply side. Thus, when water is supplied, the water flow rushes open the valve plate and flows without obstruction. When the water supply is stopped, the valve plate can be rotated by utilizing the backflow force of the water and the self gravity of the valve plate, and the outer side of the valve plate is contacted with the sealing gasket, so that the non-return device closes the pipeline and prevents the water from flowing backwards. The operation cost is low, and the energy waste is little.

As shown in fig. 3-4, a micro-resistance butterfly check valve comprises a valve body 1, a valve plate shaft 2, valve plates 3, a limiting table and a sealing pad which are arranged in the valve body 1, wherein two sides of the valve plate shaft 2 are respectively connected with one valve plate 3, the valve plate shaft 2 is connected with the upper side wall and the lower side wall of the valve body 1, the inner sides of the two valve plates 3 are sleeved on the valve plate shaft through a shaft sleeve 4, the limiting table 5 is arranged on the circumference of the inner wall of the valve body, the sealing pad 6 is arranged on one side of the limiting table 5 facing the valve plates, the outer sides of the two valve plates are arranged on the sealing pad, the valve plates are contacted with the sealing pad 6, and the valve plate shaft.

The prior art structure can be chooseed for use to the connected mode between valve plate axle 2 and the valve body 1, and the connected mode of this application is, and the upper and lower both ends of valve body respectively open has a through-hole, and two through-holes are upper and lower asymmetric arrangement, and valve plate axle 2 passes the through-hole on the valve body 1, and both ends are fixed with hexagon socket head cap screw 8 about valve plate axle 2. The two valve plates 3 are connected with the valve plate shaft 2 through a shaft sleeve 4, and the valve plates 3 can rotate around the valve plate shaft 2. Paste on the spacing platform 5 on 1 inner wall of valve body and have sealed 6, valve plate and sealed the contact of filling up, when two valve plates were closed, valve plate and valve plate axle all to the side slope of intaking, in order to cooperate the valve plate, spacing platform and sealed corresponding and also need the side slope of intaking to the valve body of filling up.

As shown in FIG. 5, the micro-resistance butterfly check valve is horizontally installed on a pipeline, and the arrow indicates the water flow direction. The plate axis and the plate of the check valve are inclined to the water inlet direction of the pipe 7. When the water pump is used, the impact pressure of water discharged from the water pump opens the valve plate to rotate by 90 degrees, the valve plate is parallel to water flow and clings to the valve plate shaft, and water supply is unimpeded. When the water pump stops supplying water, the water outlet flows back instantly to impact the valve plates to rotate towards the water return direction, meanwhile, the valve plates incline backwards to rotate by the gravity force of the valve plates to close the check valve, so that the two valve plates are in contact with the sealing gasket, and the recoil force of the water supply pushes the valve plates to lock the check valve, thereby achieving the function of cutting off the water supply backflow. The check valve is opened and closed by applying the gravity center technology of the inclination angle of the valve plate, so that the purposes of micro-resistance water supply, operation cost reduction and energy conservation are realized.

Claims

1. The utility model provides a little resistance non return device in pipeline which characterized in that: including valve plate axle (2), valve plate (3) are respectively connected to the valve plate axle (2) left and right sides, and two valve plates (3) are connected with the valve plate axle through axle sleeve (4), valve plate axle and two valve plates are to pipeline side slope of intaking, pipeline intake side inner wall is last to have spacing platform (5), spacing platform (5) are equipped with sealed pad (6) towards valve plate one side, two valve plate (3) outsides and sealed pad (6) contact.

2. The in-pipe microresistance check device of claim 1, wherein: the included angle alpha between the valve plate shaft (2) and the two valve plates (3) and the lower edge of the water inlet side pipeline is more than 45 degrees and less than 89 degrees.

3. The utility model provides a little resistance butterfly check valve, includes valve body (1), establishes valve plate axle (2), valve plate, spacing platform and sealed the pad in valve body (1), and valve plate (3) are respectively connected to valve plate axle (2) both sides, valve plate axle (2) are connected with valve body (1) upper and lower lateral wall, and two valve plates (3) are epaxial at the valve plate through axle sleeve (4) cover, have a spacing platform on valve body inner wall circumference, spacing platform is equipped with sealed the pad towards valve plate one side, the outside and the sealed contact that fills up of two valve plates, its characterized in that: the valve plate shaft, the two valve plates, the sealing gasket and the limiting table incline towards the water inlet side of the valve body.

4. A micro-resistance butterfly check valve as set forth in claim 3, wherein: the valve plate shaft, the two valve plates, the sealing gasket, the limiting table and the lower edge of the water inlet side valve body form an included angle alpha which is larger than 45 degrees and smaller than 89 degrees.