CN214743706U

CN214743706U - Double-deck autogenous pressure formula valve rod seal structure of stop valve

Info

Publication number: CN214743706U
Application number: CN202121145206.5U
Authority: CN
Inventors: 徐庆华
Original assignee: Jiangsu Tongda Marine Type Valve And Pump Co ltd
Current assignee: Jiangsu Tongda Marine Type Valve And Pump Co ltd
Priority date: 2021-05-26
Filing date: 2021-05-26
Publication date: 2021-11-16
Anticipated expiration: 2031-05-26

Abstract

The utility model discloses a double-layer self-pressing valve rod sealing structure of a stop valve, which comprises a hand wheel and a screw rod, wherein the bottom end of the hand wheel is provided with the screw rod, the bottom end of the hand wheel is provided with a fixing ring, the surface of the fixing ring is provided with a fixing bolt, the bottom end of the fixing ring is provided with a force applying rod, the top end of the force applying rod is provided with a handle, when the valve body needs to be opened and adjusted to be opened, the force applying rod is inserted into the fixing ring, the surface of the fixing ring is provided with the fixing bolt to be inserted into a limiting hole on the surface of the force applying rod, after the two force applying rods are inserted into the fixing ring, two hands are respectively inserted into the handle on the surface of the force applying rod, the hand wheel is rotated by two hands in coordination, the rotation of the hand wheel is more labor-saving by the lever principle of the force applying rod, the screw rod at the bottom end of the hand wheel is raised or lowered, and the double-pressing type stop valve rod sealing structure is more labor-saving and convenient in the use process compared with the traditional stop valve, make the valve body open and shut efficient in the use simultaneously, do not influence the precision of manual control valve body.

Description

Double-deck autogenous pressure formula valve rod seal structure of stop valve

Technical Field

The utility model belongs to the technical field of the stop valve is relevant, concretely relates to double-deck autogenous pressure formula valve rod seal structure of stop valve.

Background

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 valve closing force is larger than the valve opening force, so the diameter of the valve rod is larger, otherwise the failure of valve rod bending 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 enters the valve cavity from the upper part of the valve clack, at the moment, the force for closing the valve is small under the action of medium pressure, 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 valve of this kind has relatively short opening or closing stroke and reliable cut-off function, and the change of valve seat port is proportional to the stroke of valve clack, so that it is very suitable for regulating flow rate.

The prior art has the following problems:

the medium flow direction of the existing stop valve is changed into that the medium flow direction enters the valve cavity from the upper part of the valve clack in the use process of the existing stop valve, at this time, the force for closing the valve is small, the force for opening the valve is large, the opening and closing amount of the valve body needs to be accurately controlled, the traditional hand wheel is laborious in use, multi-person coordination operation is needed, and the opening efficiency of the valve is low.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a double-deck autogenous pressure formula valve rod seal structure of stop valve to the medium flow direction who provides current stop valve in the use among the solution above-mentioned background art just changes and gets into the valve pocket by the valve clack top, at this moment under the medium pressure effect, it is little to close the valve ground power, and the power of opening the valve is big, the volume of opening and shutting at needs accurate control valve body, and traditional hand wheel is comparatively arduous when using, need many people coordinated operation, cause the problem of the inefficiency of opening of valve.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a double-deck autogenous pressure formula valve rod seal structure of stop valve, includes hand wheel and screw rod, the bottom of hand wheel is provided with the screw rod, the bottom of screw rod is provided with the protective sleeve, the bottom of protective sleeve is provided with the go-between, the bottom of go-between is provided with the valve body, the front end of valve body is provided with into the pipe, the front end of advancing the pipe is provided with the influent stream mouth, the surface of influent stream mouth is provided with the fixed slot, the rear end of valve body is provided with the delivery port, the surface of advancing the pipe is provided with the fixed block, the surface of fixed block is provided with fixed mouthful, the bottom of hand wheel is provided with solid fixed ring, gu fixed ring's surface is provided with the gim peg, gu fixed ring's bottom is provided with the power rod, the surface of power rod is provided with the handle.

Preferably, the fixed ring is provided with two, and two fixed rings are respectively arranged at the bottom end of the hand wheel.

Preferably, the screw rod penetrates through the protective sleeve and is fixedly connected with the valve plate inside the valve body in a welding mode.

Preferably, the fixed blocks are provided with two fixed blocks, one fixed block is arranged between the inlet pipe and the valve body, and the other fixed block is arranged between the water outlet and the valve body.

Preferably, the number of the fixing bolts is two, and the two fixing bolts are arranged on the surfaces of the two fixing rings.

Preferably, the number of the fixing grooves is two, and the two fixing grooves are arranged on the surface of the solid inflow port.

Preferably, the surface of the stress application rod is provided with a limiting hole, and the limiting hole is formed in the top end of the stress application rod.

Compared with the prior art, the utility model provides a double-deck autogenous pressure formula valve rod seal structure of stop valve possesses following beneficial effect:

the double-layer self-pressing valve rod sealing structure of the stop valve is characterized in that a screw rod is arranged at the bottom end of a hand wheel, a protective sleeve is arranged at the bottom end of the screw rod, a connecting ring is arranged at the bottom end of the protective sleeve, a valve body is arranged at the bottom end of the connecting ring, a water inlet and a water outlet are arranged at two sides of the valve body, a fixing ring is arranged at the bottom end of the hand wheel, a fixing bolt is arranged on the surface of the fixing ring, a force applying rod is arranged at the bottom end of the fixing ring, a handle is arranged at the top end of the force applying rod, when the valve body needs to be opened and adjusted to be opened, the force applying rod is inserted into the fixing ring, the fixing bolt is arranged on the surface of the fixing ring and is inserted into a limiting hole on the surface of the force applying rod, after two force applying rods are inserted into the fixing ring, two hands are respectively inserted into the handle on the surface of the force applying rod, the hand wheel is cooperatively rotated by two hands, the lever principle of the force applying rod is more labor-saving, make the screw rod of hand wheel bottom rise or reduce for the stop valve is opened or is closed, compare with traditional stop valve, and novel double-deck autogenous pressure formula valve rod seal structure of stop valve is more laborsaving convenient at the in-process that uses, and is more accurate than the valve control of electronic helping hand, makes the valve body open and shut efficiency efficient in the use simultaneously, does not influence the accurate nature of manual control valve body.

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, do not constitute a limitation of the invention, in which:

fig. 1 is a schematic view of a double-layer self-pressing valve rod sealing structure of a stop valve provided by the utility model;

FIG. 2 is a schematic structural view of a stop valve with a double-layer self-pressing valve rod inserted into a forcing rod in a sealing manner;

fig. 3 is a schematic structural view of the stop valve after the double-layer self-pressing type valve rod seal is opened;

fig. 4 is a schematic structural view of a double-layer self-pressing type valve rod sealing and fixing ring of the stop valve provided by the utility model;

in the figure: 1. a hand wheel; 2. a screw; 3. a protective sleeve; 4. a connecting ring; 5. a flow inlet; 6. feeding a pipe; 7. fixing grooves; 8. a valve body; 9. a fixed block; 10. a fixed port; 11. a fixing ring; 12. a fixing bolt; 13. a stressing rod; 14. a grip; 15. and (7) a water outlet.

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.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element to which the reference is made must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1-4, the present invention provides a technical solution:

the utility model provides a double-deck autogenous pressure formula valve rod seal structure of stop valve, including hand wheel 1 and screw rod 2, the bottom of hand wheel 1 is provided with screw rod 2, the bottom of screw rod 2 is provided with protective casing 3, protective casing 3's bottom is provided with go-between 4, go-between 4's bottom is provided with valve body 8, valve body 8's front end is provided with into pipe 6, the front end of advancing pipe 6 is provided with inlet 5, inlet 5's surface is provided with fixed slot 7, valve body 8's rear end is provided with delivery port 15, inlet 6's surface is provided with fixed block 9, the surface of fixed block 9 is provided with fixed mouthful 10, the bottom of hand wheel 1 is provided with solid fixed ring 11, gu fixed ring 11's surface is provided with gim peg 12, gu fixed ring 11's bottom is provided with power rod 13, power rod 13's surface is provided with handle 14.

The utility model provides a double-deck self-pressing valve rod seal structure of stop valve, gu fixed ring 11 is provided with two altogether, and two solid fixed ring 11 set up the bottom at hand wheel 1 respectively, screw rod 2 passes the valve plate welded fastening connection of the inside of protecting casing 3 and valve body 8, fixed block 9 is provided with two altogether, one of them sets up between advancing pipe 6 and valve body 8, another sets up between delivery port 15 and valve body 8, gim peg 12 is provided with two altogether, and two gim peg 12 sets up the surface at two solid fixed ring 11, fixed slot 7 is provided with two altogether, and two fixed slots 7 set up the surface at solid influent stream mouth 5, the surface of dowel bar 13 is provided with spacing hole, and spacing hole sets up the top at dowel bar 13.

The utility model discloses a theory of operation and use flow: after the utility model is installed, the stop valve is fixed through the fixing ports 10 on the surface of the fixing blocks 9 on the two sides of the valve body 8, the stop valve is lifted through the suspension equipment such as a crane, the stop valve is moved to the pipeline to be installed, the stop valve is fixedly connected with the pipeline through the fixing slots 7 on the surface of the inlet 5, the water outlet 15 on the other end is hermetically connected with the other end, when the valve body 8 needs to be opened and adjusted to be opened and closed, the force applying rod 13 is inserted into the fixing ring 11 of the hand wheel 1, the fixing bolt 12 arranged on the surface of the fixing ring 11 is inserted into the limiting hole on the surface of the force applying rod 13, after the two force applying rods 13 are inserted into the two fixing rings 11, the two hands respectively hold the inside of the handle 14 on the surface of the force applying rod 13, the hand wheel 1 is cooperatively rotated by the two hands, the rotation of the hand wheel 1 is more labor-saving through the lever principle of the force applying rod 13, the rotating force applying rod 1 is reduced, the screw 2 at the bottom of the hand wheel 1 is lifted or reduced, make the stop valve open or close, compare with traditional stop valve, novel double-deck self-pressing formula valve rod seal structure of stop valve is more laborsaving convenient at the in-process that uses, does not influence the accurate nature of manual control valve body 8, and is more accurate than the valve control of electric power assisted for the stop valve opens and shuts in the use efficiency efficient simultaneously.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a double-deck autogenous pressure formula valve rod seal structure of stop valve, includes hand wheel (1) and screw rod (2), its characterized in that: the bottom of the hand wheel (1) is provided with a screw rod (2), the bottom of the screw rod (2) is provided with a protective sleeve (3), the bottom of the protective sleeve (3) is provided with a connecting ring (4), the bottom of the connecting ring (4) is provided with a valve body (8), the front end of the valve body (8) is provided with a pipe inlet (6), the front end of the pipe inlet (6) is provided with a flow inlet (5), the surface of the flow inlet (5) is provided with a fixing groove (7), the rear end of the valve body (8) is provided with a water outlet (15), the surface of the pipe inlet (6) is provided with a fixing block (9), the surface of the fixing block (9) is provided with a fixing port (10), the bottom of the hand wheel (1) is provided with a fixing ring (11), the surface of the fixing ring (11) is provided with a fixing bolt (12), the bottom of the fixing ring (11) is provided with a reinforcing rod (13), a grip (14) is arranged on the surface of the stressing rod (13).

2. The double-layer self-pressing type valve rod sealing structure of the stop valve according to claim 1, characterized in that: the fixed rings (11) are provided with two fixed rings (11), and the two fixed rings (11) are respectively arranged at the bottom ends of the hand wheel (1).

3. The double-layer self-pressing type valve rod sealing structure of the stop valve according to claim 1, characterized in that: the screw rod (2) penetrates through the protective sleeve (3) and is fixedly connected with the valve plate inside the valve body (8) in a welding mode.

4. The double-layer self-pressing type valve rod sealing structure of the stop valve according to claim 1, characterized in that: the two fixing blocks (9) are arranged, one of the two fixing blocks is arranged between the inlet pipe (6) and the valve body (8), and the other fixing block is arranged between the water outlet (15) and the valve body (8).

5. The double-layer self-pressing type valve rod sealing structure of the stop valve according to claim 1, characterized in that: the number of the fixing bolts (12) is two, and the two fixing bolts (12) are arranged on the surfaces of the two fixing rings (11).

6. The double-layer self-pressing type valve rod sealing structure of the stop valve according to claim 1, characterized in that: the two fixing grooves (7) are arranged on the surface of the solid inflow port (5).

7. The double-layer self-pressing type valve rod sealing structure of the stop valve according to claim 1, characterized in that: the surface of the stress application rod (13) is provided with a limiting hole, and the limiting hole is formed in the top end of the stress application rod (13).