CN212429757U

CN212429757U - Industrial fireproof stop valve

Info

Publication number: CN212429757U
Application number: CN202020838918.4U
Authority: CN
Inventors: 陈灿明
Original assignee: Shanghai Mingtong Industrial Development Group Co ltd
Current assignee: Shanghai Mingtong Industrial Development Group Co ltd
Priority date: 2020-05-19
Filing date: 2020-05-19
Publication date: 2021-01-29
Anticipated expiration: 2030-05-19

Abstract

The utility model discloses an industry fire prevention stop valve, include by the disk seat, water inlet and outlet are installed respectively to the inside passageway both ends of ending the disk seat, install the supporting seat by the disk seat upside, the valve gap is installed through the bolt to the supporting seat upside, the pressure cap is installed in the valve gap outside, middle part screw thread installs the valve rod in the valve gap, go up the valve rod lower extreme and install the valve clack, the valve body through-hole has been seted up at the middle part in ending the disk seat, and go up the valve clack setting directly over the valve body through-hole, valve body through-hole downside is provided with down the valve clack, the utility model discloses industry fire prevention stop valve through the last valve clack that is equipped with and lower valve clack, can all seal up the processing.

Description

Industrial fireproof stop valve

Technical Field

The utility model relates to a hydraulic pressure valve technical field specifically is an industry fire prevention stop valve.

Background

Valves are mechanical devices that control the flow, direction, pressure, temperature, etc. of a flowing fluid medium, and are essential components in piping systems. The shut-off valve is also called a shut-off valve, and belongs to a forced sealing type valve, so when the valve is closed, pressure must be applied to the valve clack to force the sealing surface not to leak. When the medium enters the valve from the lower part of the valve clack, the resistance to be overcome by the operating force is the friction force between the valve rod and the packing and the thrust generated by the pressure of the medium, the force for closing the valve is larger than the force for opening the valve, so the diameter of the valve rod is larger, otherwise the failure of the valve rod buckling can occur. The connection mode is divided into three types: flange connection, screw thread connection and welding connection. After the self-sealing valve appears, the medium flow direction of the stop valve is changed to enter the valve cavity from the upper part of the valve clack, at this time, under the action of medium pressure, the force for closing the valve is small, the force for opening the valve is large, and the diameter of the valve rod can be correspondingly reduced. At the same time, this type of valve is also relatively tight under the action of the medium.

The existing industrial fireproof stop valve can only be used for stopping, sealing and adjusting from one direction, so that the sealing performance is poor when the stop is finished, and the adjusting precision is low.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an industry fire prevention stop valve to solve current industry fire prevention stop valve, can only follow a direction and carry out to stop sealed regulation and use, make the leakproofness relatively poor when ending, adjust the problem that the precision is low.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides an industry fire prevention stop valve, includes by the disk seat, water inlet and outlet are installed respectively at disk seat inner channel both ends, install the supporting seat by the disk seat upside, the valve gap is installed through the bolt to the supporting seat upside, the pressure cap is installed in the valve gap outside, middle part screw thread installs the valve rod in the valve gap, go up the valve rod lower extreme and install the valve clack, the valve body through-hole has been seted up at the middle part in by the disk seat, and go up the valve clack setting directly over the valve body through-hole, valve body through-hole downside is provided with down the valve clack, all be provided with fireproof coating.

Furthermore, a support rod is installed on the upper end of the upper valve rod in a threaded mode, and a hand wheel is installed on the top of the support rod.

Furthermore, the lower side of the pressing cap is in threaded connection with the upper portion of the valve cover, and PTFE packing, a pressing ring and a sealing gasket are mounted inside the valve cover.

Further, a lower connecting seat is installed on the lower side of the stop valve seat, a lower valve rod is connected to the inner thread of the lower connecting seat, and the upper end of the lower valve rod is fixedly connected with the lower portion of the lower valve clack.

Further, the handle is installed to lower valve rod downside, the sealing washer is installed with lower connecting seat outside to lower valve rod.

Furthermore, the height of the valve body through hole is larger than the sum of the thicknesses of the upper valve clack and the lower valve clack.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses an go up the valve clack setting directly over the valve body through-hole, valve body through-hole downside is provided with down the valve clack, can all seal to valve body through-hole both ends and end the processing, has greatly improved the leakproofness when ending, and two directions are through adjusting the flow size moreover for the flow control precision is higher.

2. The utility model discloses a by all being provided with fireproof coating layer in the disk seat and the valve gap outside, can improve the fire behavior who ends the disk seat and the valve gap outside, greatly improved the security of using.

3. The utility model discloses an go up the valve rod upper end screw thread and install the bracing piece, the hand wheel is installed at the bracing piece top, is convenient for reciprocate the regulation control to last valve clack, and the handle is installed to lower valve rod downside, is convenient for carry out spiral lift adjustment control to lower valve clack.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a schematic structural diagram of a position a of the present invention.

In the figure: 1. a shut-off valve seat; 2. a valve cover; 3. a water inlet; 4. a water outlet; 5. a supporting seat; 6. an upper valve stem; 7. a support bar; 8. a hand wheel; 9. pressing the cap; 10. a gasket; 11. a bolt; 12. a valve body through hole; 13. an upper valve flap; 14. a lower valve stem; 15. a handle; 16. a lower connecting seat; 17. a seal ring; 18. a PTFE filler; 19. a lower valve clack; 20. and (5) pressing a ring.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1 and 2, in an embodiment of the present invention, an industrial fire stop valve includes a stop valve seat 1, a water inlet 3 and a water outlet 4 are respectively installed at two ends of an internal channel of the stop valve seat 1, so as to facilitate water or gas transmission of a connection pipeline, a support seat 5 is installed at an upper side of the stop valve seat 1, a valve cover 2 is installed at an upper side of the support seat 5 through a bolt 11, a press cap 9 is installed at an outer side of the valve cover 2 for sealing an upper end of the valve cover 2, an upper valve rod 6 is installed at a middle portion of the valve cover 2 by a screw thread, an upper valve flap 13 is installed at a lower end of the upper valve rod 6, a valve body through hole 12 is opened at a middle portion of the stop valve seat 1, the upper valve flap 13 is disposed right above the valve body through hole 12, a lower valve flap 19 is disposed at a lower side of the valve body through hole 12, so, the fire resistance of the outside of the shut-off valve seat 1 and the valve cover 2 can be improved.

Preferably, the upper end of the upper valve rod 6 is provided with a support rod 7 in a threaded manner, and the top of the support rod 7 is provided with a hand wheel 8, so that the upper valve clack 13 can be adjusted and controlled by up-and-down spiral movement conveniently.

Preferably, the lower side of the press cap 9 is in threaded connection with the upper part of the valve cap 2, and the PTFE packing 18, the pressing ring 20 and the gasket 10 are installed inside the valve cap 2, so that the sealing performance of the connection between the valve cap 2 and the press cap 9 can be improved.

Preferably, a lower connecting base 16 is installed on the lower side of the stop valve seat 1, a lower valve rod 14 is connected to the lower connecting base 16 through an internal thread, and the upper end of the lower valve rod 14 is fixedly connected with the lower portion of the lower valve clack 19, so that the lower valve rod 14 can be conveniently connected through the thread.

Preferably, a handle 15 is installed at the lower side of the lower valve stem 14, and a sealing ring 17 is installed at the outer sides of the lower valve stem 14 and the lower connecting seat 16 for sealing the lower side of the lower connecting seat 16.

Preferably, the height of the valve body through hole 12 is greater than the sum of the thicknesses of the upper flap 13 and the lower flap 19.

The utility model discloses a theory of operation and use flow: the upper valve clack 13 and the lower valve clack 19 are arranged in the stop valve seat 1, the upper valve clack 13 is arranged right above the valve body through hole 12 through the upper valve rod 6, the lower valve clack 19 is arranged on the lower side of the valve body through hole 12, so that sealing stop treatment can be performed on two ends of the valve body through hole 12, the sealing performance during stop is improved, and the flow regulation precision is high by regulating the flow in two directions; all be provided with fireproof coating layer through ending disk seat 1 and the valve gap 2 outside, can improve the fire behavior who ends the disk seat 1 and the valve gap 2 outside, greatly improved the security of using.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An industry fire prevention stop valve, includes by disk seat (1), its characterized in that: install water inlet (3) and outlet (4) respectively by disk seat (1) inside passage both ends, install supporting seat (5) by disk seat (1) upside, valve gap (2) are installed to supporting seat (5) upside, pressure cap (9) are installed in valve gap (2) outside, valve rod (6) are installed to middle part screw thread in valve gap (2), valve clack (13) are installed to last valve rod (6) lower extreme, valve body through-hole (12) have been seted up at the middle part in disk seat (1), and go up valve clack (13) and set up directly over valve body through-hole (12), valve body through-hole (12) downside is provided with down valve clack (19), all be provided with fireproof coating layer by disk seat (1) and valve gap (2) outside.

2. An industrial fire prevention stop valve according to claim 1, characterized in that: go up valve rod (6) upper end screw thread and install bracing piece (7), hand wheel (8) are installed at bracing piece (7) top.

3. An industrial fire prevention stop valve according to claim 1, characterized in that: the lower side of the pressing cap (9) is in threaded connection with the upper part of the valve cover (2), and a PTFE (polytetrafluoroethylene) filler (18) and a pressing ring (20) are installed inside the valve cover (2).

4. An industrial fire prevention stop valve according to claim 1, characterized in that: the lower connecting seat (16) is installed on the lower side of the stop valve seat (1), a lower valve rod (14) is connected to the inner thread of the lower connecting seat (16), and the upper end of the lower valve rod (14) is fixedly connected with the lower portion of the lower valve clack (19).

5. An industrial fire prevention stop valve according to claim 4, characterized in that: handle (15) are installed to lower valve rod (14) downside, sealing washer (17) are installed with lower connecting seat (16) outside in lower valve rod (14).

6. An industrial fire prevention stop valve according to claim 1, characterized in that: the height of the valve body through hole (12) is larger than the sum of the thicknesses of the upper valve clack (13) and the lower valve clack (19).