CN208793675U - One kind can be with the quick-replaceable gate valve of pressure condition - Google Patents

Abstract

The utility model embodiment is related to one kind can be with the quick-replaceable gate valve of pressure condition, it is related to valve arrangement technical field, it can include gate valve and check device with the quick-replaceable gate valve of pressure condition, check device includes check device shell, sealing screw rod, two valve plates and thread bush；The liquid outlet of check device shell is connected by the inlet of flange and gate valve, check device enclosure interior can be rotatably set valve shaft, two valve plates are hinged with valve shaft respectively, and valve plate includes first surface and second surface, and the first surface of two valve plates is respectively arranged with an angle track；Sealing screw rod is rotatablely arranged at check device enclosure interior, and is located at the same side of valve plate with angle track；One end of sealing screw rod extends to the outside of check device shell, and thread bush is connect with two angle tracks respectively by two motion bars.The utility model embodiment can have the advantages that structure is simple, easy to maintenance, highly-safe and easy to use with the quick-replaceable gate valve of pressure condition.

Description

One kind can be with the quick-replaceable gate valve of pressure condition

Technical field

The utility model relates to valve arrangement technical fields, and in particular to one kind can be with the quick-replaceable gate valve of pressure condition.

Background technique

Most of valve used in present marine piping and various pipes is directly connected to using flange, although it is tied Structure is simple, it is at low cost but can only be closed when valve breaks down the valve of medium flow field upwards carry out replacing again it is even entire Pipeline will close, and flexibility difference seriously constrains its application in marine engineering equipment occasion.Such as ship running mistake Marine valve, which goes wrong, in journey can only wait until that ship returns to harbour or dock is repaired and replaced.When this can lose a large amount of Between and huge expense, seriously constrain the exploitation of China's marine resources and the sustainable development of marine economy.

Utility model content

The one kind that is designed to provide of the utility model embodiment can be existing to solve with the quick-replaceable gate valve of pressure condition It must shut off medium flow field valve upwards and valve service life short disadvantage when some maintenance of valve.

To achieve the above object, the utility model embodiment one kind is provided can be described with the quick-replaceable gate valve of pressure condition It can include gate valve and check device with the quick-replaceable gate valve of pressure condition, the check device includes check device shell, sealing Screw rod, two valve plates and the thread bush being rotationally sheathed on the sealing screw rod；The check device shell is provided with The liquid outlet of liquid outlet and inlet, the check device shell is connect by flange with the inlet of the gate valve, described to stop Return device enclosure interior can be rotatably set valve shaft, and two valve plates are hinged with the valve shaft respectively, and the valve plate includes First surface and second surface, the first surface of two valve plates are respectively arranged with an angle track；The sealing screw rod It is rotatablely arranged at the check device enclosure interior, and is located at the same side of the valve plate with the angle track；It is described One end of sealing screw rod extends to the outside of the check device shell, the thread bush by two motion bars respectively with two The angle track connection.

Preferably, two valve plates are semicircle valve plate, and the edge of the valve plate second surface is provided with the first sealing Pad.

Preferably, two valve plates are arranged symmetrically about the valve shaft, the axis of the valve shaft and the check device The axis of shell is vertical.

Preferably, interior hexagonal hole is provided on the end face of described sealing screw rod one end.

Preferably, crossover port is provided on the inner wall of the check device shell, the other end of the sealing screw rod can turn It is set in the crossover port dynamicly.

Preferably, the edge of the check device shell inlet is provided with the second gasket.

Preferably, the gate panel surface of the gate valve is covered with one layer of rubber.

Preferably, the inner wall of the check device shell is covered with one layer of rubber.

What the utility model embodiment had the advantages that the utility model embodiment can be with the quick-replaceable lock of pressure condition Valve closes medium flow field by closing check device when gate valve is damaged, and then replaces or repair the gate valve of damage.This is practical new Type embodiment can have structure simple, easy to maintenance, highly-safe and easy to use with the quick-replaceable gate valve of pressure condition Advantage.

Detailed description of the invention

Fig. 1 is can be with the side elevational cross-section structural schematic diagram of the quick-replaceable gate valve of pressure condition in the utility model embodiment 1.

Fig. 2 is the top view cross section structural schematic diagram of check device in the utility model embodiment 1.

Fig. 3 is the schematic view of the front view of check device in the utility model embodiment 1.

Fig. 4 is the backsight structural representation of check device in the utility model embodiment 1.

Fig. 5 is the overlooking structure diagram that screw rod is sealed in the utility model embodiment 1.

Fig. 6 is the structural schematic diagram of valve plate and valve shaft in the utility model embodiment 1.

Specific embodiment

The following examples illustrate the utility model, but is not intended to limit the scope of the present invention.

Embodiment 1

As shown in Figure 1, can include gate valve 1 and check device 2, the inlet of gate valve 1 with the quick-replaceable gate valve of pressure condition It is provided with flange 29 with liquid outlet, the liquid outlet of gate valve 1 is connect by flange 29 with the pipeline below medium flow field.

As shown in Fig. 2, check device 2 includes check device shell 21, sealing screw rod 22, two valve plates 23 and thread bush 24.In tubular construction, the inlet and liquid outlet of check device shell 21 are provided with flange 29, non-return to check device shell 21 The liquid outlet of device housing 21 is connect by flange 29 with the inlet of gate valve 1, and the inlet of check device shell 21 passes through method Orchid 29 connect with the pipeline above medium flow field.It is provided with to the inner rotation of check device shell 21 valve shaft 231, valve shaft 231 Axis is vertical with the axis of check device shell 21.

As shown in Fig. 3,4 and 6, valve plate 23 is semicircular plate structure, and two valve plates 23 are hinged with valve shaft 231 respectively, And two valve plates 23 are symmetrical about valve shaft 231, valve plate 23 can surround 231 reciprocating rotation certain angle of valve shaft, and then realize non-return The closing and opening of device 2.Valve plate 23 includes first surface and second surface, and the first surface of two valve plates 23 is respectively arranged with One angle track 26, two angle tracks 26 are parallel with the first surface of two valve plates 23 respectively, when check device 2 is closed, Two angle tracks 26 are in an acute angle, and the symmetry axis of the angular bisector of the angle and two valve plates 23 is same straight line.

As shown in figure 5, the sealing structure in the shape of a rod of screw rod 22, seals and be provided with screw thread on the root cylinder of screw rod 22, spiral shell is sealed Bar 22 is rotatablely arranged at the inside of check device shell 21, and is located at the same side of valve plate 23 with angle track 26, specifically , one end of sealing screw rod 22 extends to the outside of check device shell 21, is provided with and turns on the inner wall of check device shell 21 The other end of Xiang Kong, sealing screw rod 22 are rotatablely arranged in the crossover port.It seals and is provided on the end face of 22 one end of screw rod Interior hexagonal hole 221, by the way that in hexagonal hole 221 in being inserted into hexagon, rotation hexagon can realize turning for sealing screw rod 22 It is dynamic.The rotation of sealing screw rod 22 is controlled by using hexagon, it is no longer necessary to handle be set in one end of sealing screw rod 22, had Effect reduces can be with the volume of the quick-replaceable gate valve of pressure condition.

Thread bush 24 is that threaded cyclic structure is arranged in inner surface, and thread bush 24 is rotationally sheathed on sealing screw rod 22 On, and be threadedly engaged with sealing screw rod 22.When rotary seal screw rod 22, the table in the screw thread and thread bush 24 of sealing screw rod 22 Under the screw thread interaction in face, thread bush 24 can be moved along the length direction of sealing screw rod 22.

One end of two motion bars 25 is hinged with thread bush 24 respectively, and the other end of two motion bars 25 is respectively slidably It is set in two angle tracks 26.By rotatory sealing screw rod 22, thread bush 24 can be in the axial direction of sealing screw rod 22 back and forth Movement, thread bush 24 drive an end motion of motion bar 25, and the other end of motion bar 25 can slide in angle track 26, due to Two angle tracks 26 have angle, and when thread bush 24 moves upwards, thread bush 24 drives one end of motion bar 25 upward, living The other end of lever 25 in 26 upward sliding of angle track, and pull valve plate 23 around valve shaft 231 rotate, at this point, valve plate 23 by Gradually open.When thread bush 24 moves downward, thread bush 24 pushes one end of motion bar 25 downward, and the other end of motion bar 25 exists 26 slide downward of angle track, and valve plate 23 is pushed to rotate around valve shaft 231, valve plate 23 is closed.

Further, in order between sealing valve plate 23 and the inner surface of check device shell 21 gap and two valve plates Gap between 23.The edge of 23 second surface of valve plate is provided with the first gasket 27, close by rotating when valve plate 23 is closed Screw rod 22 is sealed, so that valve plate 23 squeezes the first gasket 27, meanwhile, the medium flow field in check device shell 21 also can be to valve plate 23 Generate pressure so that the inner wall of check device shell 21 be bonded with the first gasket 27 it is closer, to reach dual-seal Effect.

Further, the gap between the pipeline above the inlet and medium flow field in order to seal check device shell 21, The edge of 21 inlet of check device shell is provided with the second gasket 28.

Working principle: when gate valve 1 damages, hexagon being inserted into interior hexagonal hole 221, by rotating hexagon, Rotatory sealing screw rod 22 drives valve plate 23 to rotate, and check device 2 is closed, then unloads gate valve 1.After having replaced gate valve 1, then pass through Hexagon is rotated, sealing screw rod 22 is reversely rotated and valve plate 23 is driven to rotate, check device 2 is opened, entire pipeline conducting, due to It does not need to close the valve above medium flow field, the maintenance time of gate valve 1 is greatly saved.The utility model embodiment can be with pressure The quick-replaceable gate valve of state has the advantages that structure is simple, easy to maintenance, highly-safe and easy to use.

Embodiment 2

The present embodiment based on embodiment 1, the present embodiment difference from example 1 is that, lock in the present embodiment The gate panel surface of valve 1 is covered with one layer of rubber, and rubber can effectively prevent medium flow field to cause to corrode to gate valve 1, extends making for gate valve 1 Use the service life.Further, the inner wall of check device shell 21 is covered with one layer of rubber, by covering in check device shell 21 Rubber can effectively extend the service life of check device shell 21.It certainly, can be by check device shell in order to reduce production cost Rubber layer and the second gasket 28 in body 21 are integrally formed.

Although being above described in detail with generality explanation and specific embodiment to the utility model, On the basis of the utility model, it can be modified or is improved, this is apparent to those skilled in the art 's.Therefore, these modifications or improvements on the basis of without departing from the spirit of the present invention, belong to the utility model and want Seek the range of protection.

Claims (8)

1. one kind can be with the quick-replaceable gate valve of pressure condition, described can include gate valve with the quick-replaceable gate valve of pressure condition, special Sign is that described can further include check device with the quick-replaceable gate valve of pressure condition, and the check device includes check device shell Body, sealing screw rod, two valve plates and the thread bush being rotationally sheathed on the sealing screw rod；The check device shell Body is provided with liquid outlet and inlet, and the liquid outlet of the check device shell is connected by the inlet of flange and the gate valve It connects, the check device enclosure interior can be rotatably set valve shaft, and two valve plates are hinged with the valve shaft respectively, described Valve plate includes first surface and second surface, and the first surface of two valve plates is respectively arranged with an angle track；It is described Sealing screw rod is rotatablely arranged at the check device enclosure interior, and is located at the same of the valve plate with the angle track Side；One end of the sealing screw rod extends to the outside of the check device shell, and the thread bush passes through two motion bars point It is not connect with two angle tracks.

2. according to claim 1 can be with the quick-replaceable gate valve of pressure condition, which is characterized in that two valve plates are half The edge of circular valve plate, the valve plate second surface is provided with the first gasket.

3. according to claim 2 can be with the quick-replaceable gate valve of pressure condition, which is characterized in that two valve plates about The valve shaft is arranged symmetrically, and the axis of the valve shaft is vertical with the axis of the check device shell.

4. according to claim 3 can be with the quick-replaceable gate valve of pressure condition, which is characterized in that described sealing screw rod one end End face on be provided with interior hexagonal hole.

5. according to claim 4 can be with the quick-replaceable gate valve of pressure condition, which is characterized in that the check device shell Inner wall on be provided with crossover port, the other end of the sealing screw rod is rotatablely arranged in the crossover port.

6. according to claim 5 can be with the quick-replaceable gate valve of pressure condition, which is characterized in that the check device shell The edge of inlet is provided with the second gasket.

7. according to claim 6 can be with the quick-replaceable gate valve of pressure condition, which is characterized in that the flashboard table of the gate valve Face is covered with one layer of rubber.

8. according to claim 6 or 7 can be with the quick-replaceable gate valve of pressure condition, which is characterized in that the check device The inner wall of shell is covered with one layer of rubber.