CN207777691U - Formula check-valves is filled in one kind - Google Patents

Abstract

The utility model provides and fills formula check-valves in one kind, including：Valve body, valve road, kuppe and valve deck, kuppe is set in the valve road, valve body position corresponding with the kuppe offers valve deck, the kuppe uses dismountable split-type design, when being safeguarded or being replaced the kuppe and its inner body, need not by check-valves from pipeline integral demounting, it only needs to open valve deck and dismantles kuppe, the part flow backwards inside cover and the refluence cover can be removed out of valve road and be safeguarded or replaced, improve the maintenance efficiency of the upper dress formula check-valves, and improve the applicability and convenience of the upper dress formula check-valves.

Description

A top entry check valve

technical field

The utility model relates to the field of valve manufacturing, in particular to a top loading check valve.

Background technique

Check valves are usually used in power plants, chemical plants, natural gas transmission and other working conditions. They are generally installed at the outlet of the pump and used to prevent production accidents caused by the backflow of the circulating medium. The check valve includes a valve body, used in pipelines and installed in pipelines The inner shroud, the shroud includes a valve disc used to seal and open the pipeline and a spring used to drive the valve disc to perform damping movement along the pipeline extension direction, when the pressure of the circulating medium exceeds the preload of the valve disc and spring When the pressure is high, the check valve opens and the medium circulates. When the pressure of the circulating medium is less than the pre-tightening force of the disc and spring or the medium flows back, the check valve closes.

The check valve in the prior art is designed as an integrated structure, and the shroud is usually welded in the pipeline. During the daily use of the check valve, the phenomenon of medium impurities usually occurs. Due to the gap between the parts of the check valve The tolerance is closely matched. When the medium impurities are deposited to a certain extent, the opening and closing of the check valve will cause jamming, which will affect the sealing performance of the check valve. Because the service life of the valve body is much longer than that of the guide cover and guide Therefore, each internal part will be maintained or replaced. However, the check valve is designed in one piece. When repairing or replacing, the check valve must be removed from the pipeline as a whole, which is extremely inconvenient for maintenance and replacement.

Utility model content

In view of the above-mentioned shortcomings of the prior art, the purpose of this utility model is to provide a top-mounted check valve, which is used to solve the problems caused by the need for the check valve to be completely removed from the pipeline when the check valve is maintained or replaced in the prior art. the inconvenience.

In order to achieve the above purpose and other related purposes, the utility model provides a top entry check valve, comprising: a valve body, a valve channel, a guide cover and a valve cover, the guide cover is arranged in the valve channel, the A valve cover is provided at the position corresponding to the valve body and the guide cover, and the valve cover includes a valve cover opening, a cover plate and a first fastener, the cover plate has a first fastening hole, and the valve body includes The second fastener and the second fastening hole, the cover plate is fixed on the valve cover opening, one end of the first fastener is fixedly connected with the cover plate, and the other end of the first fastener passes through The first fastening hole is connected with the wind deflector, and the second fastener is connected with the wind deflector through the second fastening hole.

Optionally, the valve cover also includes a support plate and a third fastener, and the support plate is arranged on the valve cover opening, and the support plate is connected to the cover plate through the third fastener .

Optionally, the valve cover further includes a sealing cover, the first fastener passes through the sealing cover and is connected to the shroud, and the third fastener passes through the support plate and the cover in turn. plate and is fixedly connected with the sealing cover.

Optionally, the support plate has an opening for adjusting the first fastener.

Optionally, a first sealing ring is provided in the first fastening hole and matches with the first fastener, and a second sealing ring is provided in the second fastening hole and is compatible with the second Fasteners match.

Optionally, the first fastener is in contact connection with the wind deflector, and the second fastener is threadedly connected with the wind deflector.

Optionally, the wind deflector includes a first body and a second body, and the first body and the second body are detachably connected.

Optionally, the structure of the shroud is drop-shaped.

Optionally, the wind deflector has a plane near the second fastener, and the end of the second fastening hole close to the wind deflector matches the plane.

As mentioned above, the top entry check valve of the present invention has the following beneficial effects:

1. There is a valve cover at the position corresponding to the valve body and the guide cover, which can be opened to remove the guide cover from the valve channel for maintenance or replacement;

2. The shroud adopts a split design, and the shroud can be disassembled when it is necessary to maintain the parts inside the shroud;

3. Maintenance and replacement of various internal parts can be carried out within the life cycle of the valve body or valve channel, which avoids the premature scrapping of the top entry check valve and saves resources.

Description of drawings

Fig. 1 is a schematic structural diagram of a belt conveying mechanism in an embodiment of the present invention.

Part number description

1 valve body

11 Second Fastener

111 Second sealing ring

2 valve way

3 Shroud

31 First Body

32 Second Body

33 planes

4 Bonnet

41 Cover port

42 Cover

43 first fastener

431 First sealing ring

44 Sealing cap

45 support plate

451 opening

46 Third Fastener

Detailed ways

The implementation of the present utility model is described below through specific examples, and those skilled in the art can easily understand other advantages and effects of the present utility model from the content disclosed in this specification. The utility model can also be implemented or applied through other different specific implementation modes, and the details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the utility model.

See Figure 1. It should be noted that the diagrams provided in this embodiment are only schematically illustrating the basic concept of the utility model, and only the components related to the utility model are shown in the diagrams rather than the number of components, Shape and size drawing, the type, quantity and proportion of each component can be changed arbitrarily during actual implementation, and the component layout type may also be more complicated. The structures, proportions, sizes, etc. shown in the drawings attached to this specification are only used to match the content disclosed in the specification, for those who are familiar with this technology to understand and read, and are not used to limit the limitations that the utility model can implement Conditions, so it has no technical substantive meaning, any modification of structure, change of proportional relationship or adjustment of size shall still fall within the scope of this utility model without affecting the effect and purpose of this utility model. The technical content disclosed by the new model must be within the scope covered. At the same time, terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description and are not used to limit the scope of this specification. The applicable scope of the utility model and the change or adjustment of its relative relationship shall also be regarded as the applicable scope of the utility model if there is no substantial change in the technical content.

Before describing the embodiment of the utility model in detail, the application environment of the utility model will be described first. The technology of the utility model is mainly applied in the valve control, especially in the maintenance and replacement process of the check valve method. The inventor found that in the existing check valve, the guide cover and the check valve are designed in one piece That is, the shroud is fixedly connected in the check valve, and when maintenance or replacement is performed, the entire check valve needs to be disassembled from the pipeline, which greatly reduces maintenance efficiency and production efficiency, and the valve in the check valve The life-span of the body is much higher than the life-span of each internal part, and the overall replacement of the check valve increases the waste of resources. Therefore, the inventor provides a top entry check valve, which is used to solve the problems of inconvenient maintenance and waste of resources in the existing check valves.

Please refer to Figure 1, the utility model provides a top entry check valve, including: a valve body 1, a valve channel 2, a guide cover 3 and a valve cover 4, the guide cover 3 is arranged in the valve channel 2 The position corresponding to the valve body 1 and the shroud 3 is provided with a valve cover 4, and the valve cover 4 includes a valve cover opening 41, a cover plate 42 and a first fastener 43, and the cover plate 42 has a first Fastening holes (not marked in the figure), the valve body 1 includes a second fastener 11 and a second fastening hole (not marked in the figure), the cover plate 42 is fixed on the valve cover port 41 Above, one end of the first fastener 43 is fixedly connected to the cover plate 42, the other end of the first fastener 43 is connected to the wind deflector 3 through the first fastening hole, and the second fastening The firmware 11 is connected to the wind deflector 3 through the second fastening hole; the first fastener 43 is fastened to the wind deflector 3, and then the second fastener 11 is used to adjust the wind deflector 3 Position, fix the guide cover 3 in the valve channel, because the service life of the valve body 1 and valve channel 2 is much longer than the guide cover 3, so it is necessary to maintain or replace the guide cover 3 to meet the requirements of the check valve and pipeline In normal use, when performing maintenance or replacing the wind deflector 3, the first fastener 43 and the second fastener 11 are disassembled first, so the wind deflector 3 can move, and then the wind deflector 3 is removed from the cover plate It is not necessary to disassemble the entire check valve from the pipeline for maintenance or replacement, which not only saves resources, but also improves the convenience of maintenance or replacement of the shroud.

In detail, the valve cover 4 also includes a support plate 45 and a third fastener 46, and the support plate 45 is arranged on the valve cover port 41, the valve cover 4 also includes a sealing cover 44, the The first fastener 43 passes through the sealing cover 44 to connect with the wind deflector 3 , and the third fastener 46 passes through the support plate 45 and the cover plate 42 in turn and is fixed to the sealing cover 44 Connection, the sealing cover 44 is used to prevent medium leakage.

Preferably, the support plate 45 has an opening 451 for adjusting the first fastener 43 , during routine maintenance, the first fastener 43 can be rotated through the opening 451 and adjusted through the first fastener 43 The position of the wind deflector 3; further, the first fastener 43 is in contact with the wind deflector 3, and the second fastener 11 is screwed with the wind deflector 3, which improves the Top entry check valve tightness.

Specifically, a first sealing ring 431 is provided in the first fastening hole and matches with the first fastener 43, and a second sealing ring 111 is provided in the second fastening hole and is compatible with the The second fastener 11 is matched, and the first sealing ring 431 and the second sealing ring 111 are used to prevent medium leakage from the first fastener 43 and the second fastener 11 .

Preferably, the structure of the wind deflector 3 is a drop shape, the wind deflector 3 includes a first body 31 and a second body 32, the first body 31 and the second body 32 are detachably connected, and the The shroud 3 is designed in separate parts. When the deposition of medium impurities occurs inside the shroud 3, the first body 31 and the second body 32 can be disassembled to facilitate maintenance and repair of parts in the shroud 3; The wind deflector 3 has a flat surface 33 near the second fastener 11, and the end of the second fastening hole close to the wind deflector 3 matches the plane 33, so as to facilitate fixing the wind deflector 3 On valve channel 2.

In summary, the utility model provides a top entry check valve, comprising: a valve body, a valve channel, a guide cover and a valve cover, the guide cover is arranged in the valve channel, the valve body and the A valve cover is provided at the position corresponding to the guide cover, and the guide cover adopts a detachable split design. When performing maintenance or replacing the guide cover and its internal parts, it is not necessary to remove the check valve from the pipeline. Whole disassembly, only need to open the valve cover and disassemble the guide cover, then the guide cover can be removed from the valve channel for maintenance or replacement, which improves the maintenance efficiency of the top entry check valve, and improves the efficiency of the top entry check valve. The applicability and convenience of the return valve.

The above-mentioned embodiments only illustrate the principles and effects of the present utility model, but are not intended to limit the present utility model. Anyone familiar with this technology can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the technical field without departing from the spirit and technical ideas disclosed in the utility model should still be covered by the claims of the utility model.

Claims (9)

1. A top entry check valve, characterized in that it comprises: a valve body, a valve channel, a guide cover and a valve cover, the guide cover is arranged in the valve channel, the valve body and the guide cover A valve cover is provided at the corresponding position of the cover, and the valve cover includes a valve cover opening, a cover plate and a first fastener, the cover plate has a first fastening hole, and the valve body includes a second fastener and a first fastener. Two fastening holes, the cover plate is fixed on the valve cover opening, one end of the first fastener is fixedly connected with the cover plate, and the other end of the first fastener is connected to the first fastening hole through the first fastening hole. The wind deflector is connected, and the second fastener is connected with the wind deflector through the second fastening hole. 2. The top entry check valve according to claim 1, characterized in that: the valve cover also includes a support plate and a third fastener, and the support plate is arranged on the valve cover opening, the support A plate is connected to the cover plate by the third fastener. 3. The top entry check valve according to claim 2, characterized in that: the valve cover further includes a sealing cover, the first fastener passes through the sealing cover and is connected with the shroud, the The third fastener passes through the support plate and the cover plate in sequence and is fixedly connected with the sealing cover. 4. The top entry check valve according to claim 2, wherein the support plate has an opening for adjusting the first fastener. 5. The top entry check valve according to claim 1, characterized in that: a first sealing ring is provided in the first fastening hole and matches with the first fastener, and the second tight A second sealing ring is arranged on the fixing hole and matched with the second fastener. 6. The top entry check valve according to claim 1, characterized in that: the first fastener is in contact with the shroud, and the second fastener is threadedly connected with the shroud . 7 . The top entry check valve according to claim 1 , wherein the flow guiding cover comprises a first body and a second body, and the first body and the second body are detachably connected. 8. The top entry check valve according to claim 1, characterized in that: the structure of the guide cover is a water drop type. 9. The top entry check valve according to claim 1, characterized in that: the guide cover has a plane near the second fastener, and the second fastening hole is close to the guide cover One end matches the flat surface.