CN214999433U

CN214999433U - Corrugated pipe stop valve

Info

Publication number: CN214999433U
Application number: CN202121441164.XU
Authority: CN
Inventors: 石卫民
Original assignee: Zhejiang Jinlei Fluid Equipment Co ltd
Current assignee: Zhejiang Jinlei Fluid Equipment Co ltd
Priority date: 2021-06-28
Filing date: 2021-06-28
Publication date: 2021-12-03
Anticipated expiration: 2031-06-28

Abstract

The application discloses a corrugated pipe stop valve, wherein a valve plate assembly can be fixed to a first channel in a vertically moving mode, a valve plate is connected to the lower end of a valve rod, a sealing assembly comprises a sleeving piece and a spiral spring, the sleeving piece is sleeved on the valve rod and comprises a plate body and a barrel body, the plate body is connected to one end, close to the valve plate, of the barrel body, the upper end and the lower end of the spiral spring are respectively connected with the plate body and the valve plate, and the outer diameter of the barrel body is equal to the inner diameter of the first channel; according to the corrugated pipe stop valve provided by the embodiment, the influence of fluid in the stop valve on the corrugated pipe can be reduced due to the existence of the sleeve joint; the socket joint piece is supported by the spiral spring, the acting force between the socket joint piece and the first channel is not rigid force, the force borne by the socket joint piece cannot exceed the elastic force limit which can be provided by the spiral spring, and the socket joint piece and the first channel cannot be abnormally firmly connected.

Description

Corrugated pipe stop valve

Technical Field

The utility model relates to a stop valve field, in particular to bellows stop valve.

Background

The stop valve, also called stop valve, is one of the most widely used valves, and it is popular because the friction between the sealing surfaces is small in the opening and closing process, it is durable, the opening height is not large, it is easy to manufacture, it is convenient to maintain, it is not only suitable for middle and low pressure, but also for high pressure.

There are presently configurations that use bellows to seal against the valve stem, however some fluids with poor conditions (e.g., high temperatures or with particulate impurities) still have some damage to the bellows.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a bellows stop valve aims at solving the problem of fluid to bellows negative effects in the bellows stop valve.

In order to achieve the above object, the present invention provides a bellows stop valve, including:

the valve comprises a valve body, wherein a flow inlet channel and a flow outlet channel are respectively arranged at two ends of the valve body in the length direction, a valve seat is arranged between the flow inlet channel and the flow outlet channel, a flange opening is arranged on the peripheral wall of the valve body, and the flange opening is matched with and corresponds to the valve seat;

the cover plate assembly comprises a cover plate main body, wherein a first channel penetrates through the cover plate main body in the thickness direction;

the valve plate assembly comprises a valve rod, a valve plate and a sealing assembly, the valve plate assembly can be fixed to the first channel in an up-and-down motion mode, the valve plate is connected to the lower end of the valve rod, the sealing assembly comprises a sleeving piece and a spiral spring, the sleeving piece is sleeved on the valve rod and comprises a plate body and a cylinder body, the plate body is connected to one end, close to the valve plate, of the cylinder body, the upper end and the lower end of the spiral spring are respectively connected with the plate body and the valve plate, and the outer diameter of the cylinder body is equal to the inner diameter of the first channel;

wherein when the valve plate is combined with the valve seat, a part of the cylinder in the length direction is positioned in the first passage.

Further, the valve plate face be connected with at least one drag hook on the one side of valve rod, the drag hook is kept away from the one end of valve plate is located the top of plate body, the drag hook be used for with the cover connects the piece certainly pull down in the first passageway.

Furthermore, the number of drag hooks is two, and is in the symmetrical setting on the valve plate.

According to the corrugated pipe stop valve provided by the embodiment, the influence of fluid in the stop valve on the corrugated pipe can be reduced due to the existence of the sleeve joint; the socket joint piece is supported by the spiral spring, the acting force between the socket joint piece and the first channel is not rigid force, the force borne by the socket joint piece cannot exceed the elastic force limit which can be provided by the spiral spring, and the socket joint piece and the first channel cannot be abnormally firmly connected.

Drawings

Fig. 1 is a schematic cross-sectional view of a bellows stop valve according to an embodiment of the present invention (with the valve plate assembly in a lower position);

fig. 2 is a schematic cross-sectional view of a bellows stop valve according to an embodiment of the present invention (the valve plate assembly is in the upper position).

The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.

Detailed Description

It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

As used herein, the singular forms "a", "an", "the" and "the" include plural referents unless the content clearly dictates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, units, modules, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, units, modules, components, and/or groups thereof. It will be understood that when an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements may also be present. Further, "connected" or "coupled" as used herein may include wirelessly connected or wirelessly coupled. As used herein, the term "and/or" includes all or any element and all combinations of one or more of the associated listed items.

It will be understood by those within the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

Referring to fig. 1-2, in an embodiment of the present invention, a bellows stop valve includes:

the valve comprises a valve body 100, wherein a flow inlet channel and a flow outlet channel are respectively arranged at two ends of the valve body in the length direction, a valve seat 110 is arranged between the flow inlet channel and the flow outlet channel, a flange opening 120 is arranged on the peripheral wall of the valve body 100, and the flange opening 120 is matched with and corresponds to the valve seat 110;

the cover plate assembly 200 comprises a cover plate main body 210, wherein a first channel 220 penetrates through the cover plate main body 210 in the thickness direction;

the valve plate assembly comprises a valve rod 310, a valve plate 320 and a sealing assembly, the valve plate assembly can be fixed to the first channel 220 in a vertical motion mode, the valve plate 320 is connected to the lower end of the valve rod 310, the sealing assembly comprises a sleeving part 331 and a spiral spring 332, the sleeving part 331 is sleeved on the valve rod 310, the sleeving part 331 comprises a plate body and a cylinder body, the plate body is connected to one end, close to the valve plate 320, of the cylinder body, the upper end and the lower end of the spiral spring 332 are respectively connected with the plate body and the valve plate 320, and the outer diameter of the cylinder body is equal to the inner diameter of the first channel 220;

wherein when the valve plate 320 is combined with the valve seat 110, a portion of the cylinder in a length direction is located in the first passage 220.

In this embodiment, the valve plate 320 is separated from and coupled to the valve seat 110 by the up-and-down movement of the valve plate assembly, so that the fluid in the valve body 100 is conducted or cut off. A bellows assembly is coupled to the valve stem 310 to provide a seal between the valve stem 310 and the first passageway 220. Particularly, in the using process, when the valve plate 320 is combined with the valve seat 110, no fluid passes through the bellows stop valve, and the part of the cylinder body in the length direction is positioned in the first channel 220, so that the process of completely separating the cylinder body from the first channel 220 does not exist (the problem of butt joint error is also avoided); when the valve plate assembly starts to rise, the degree of coincidence of the cylinder and the first passage 220 is raised, and then the fluid in the bellows stop valve does not easily enter the bellows from the gap between the cylinder and the first passage 220. In the process of the valve plate assembly ascending, the sleeve 331 is supported by the coil spring 332, and the acting force between the sleeve 331 and the first passage 220 is not a rigid force. If the socket 331 is fixed to the valve stem 310, when the valve stem 310 ascends, the ascending force of the valve stem 310 directly acts on the socket 331, which may cause an excessive binding force between the socket 331 and the first channel 220, thereby damaging the socket 331 or the first channel 220, and making the socket 331 separate from the first channel 220 more difficult. In this embodiment, when the valve plate assembly is lifted to the limit position, the coil spring 332 is not compressed to the limit, so the force applied to the socket 331 does not exceed the limit of the elastic force provided by the coil spring 332, and the force applied to the socket 331 is the elastic force, so that the above two negative effects are not present. As the valve plate assembly begins to descend, the coil spring 332 pulls the socket 331 away from the first passage 220. It should be noted that the resistance of the socket 331 entering and exiting the first passage 220 is mainly due to the fit size, the expansion and contraction with temperature, or the particles entering the gap.

In one embodiment, at least one pull hook 400 is connected to a surface of the valve plate 320 facing the valve rod 310, an end of the pull hook 400 away from the valve plate 320 is located above the plate body, and the pull hook 400 is used for pulling the socket 331 down from the first channel 220.

In this embodiment, the draw hook 400 is adopted to draw the socket 331 away from the first channel 220, so as to avoid the damage to the spiral spring 332 caused by the fact that the spiral spring 332 is used to draw the socket 331 away from the first channel 220 and even the situation that the socket 331 cannot be drawn away from the first channel 220 by the force provided by the spiral spring 332.

In one embodiment, the number of the hooks 400 is two, and the hooks are symmetrically arranged on the valve plate 320.

The number of the draw hooks 400 is increased and the draw hooks are symmetrically arranged, so that the sleeve member 331 can be pulled away from the first passage 220 in a balanced manner, and the sleeve member 331 or the first passage 220 is prevented from being damaged.

In summary, in the bellows stop valve provided in this embodiment, the sleeve 331 can reduce the influence of the fluid in the stop valve on the bellows; the socket 331 is supported by the coil spring 332, the acting force between the socket 331 and the first channel 220 is not a rigid force, the force applied to the socket 331 does not exceed the limit of the elastic force provided by the coil spring 332, and the socket 331 and the first channel 220 are not abnormally and firmly connected.

The above only is the preferred embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structures or equivalent flow changes made by the contents of the specification and the drawings, or directly or indirectly applied to other related technical fields, are included in the same way in the protection scope of the present invention.

Claims

1. A bellows shut-off valve, comprising:

2. The bellows stop valve of claim 1, wherein at least one drag hook is connected to a face of the valve plate facing the valve stem, an end of the drag hook distal from the valve plate is located above the plate body, and the drag hook is configured to pull down the socket from within the first passage.

3. The bellows stop valve of claim 2, wherein the number of the drag hooks is two and the drag hooks are symmetrically disposed on the valve plate.