CN111022687A - Lifting plug valve - Google Patents

Lifting plug valve Download PDF

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Publication number
CN111022687A
CN111022687A CN201911343465.6A CN201911343465A CN111022687A CN 111022687 A CN111022687 A CN 111022687A CN 201911343465 A CN201911343465 A CN 201911343465A CN 111022687 A CN111022687 A CN 111022687A
Authority
CN
China
Prior art keywords
valve
cock
wedge
valve body
cover
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201911343465.6A
Other languages
Chinese (zh)
Inventor
王健
王良
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SHANGHAI KAIKE VALVE MANUFACTURING CO LTD
Original Assignee
SHANGHAI KAIKE VALVE MANUFACTURING CO LTD
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by SHANGHAI KAIKE VALVE MANUFACTURING CO LTD filed Critical SHANGHAI KAIKE VALVE MANUFACTURING CO LTD
Priority to CN201911343465.6A priority Critical patent/CN111022687A/en
Publication of CN111022687A publication Critical patent/CN111022687A/en
Pending legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
    • F16K3/22—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
    • F16K3/30—Details
    • F16K3/314—Forms or constructions of slides; Attachment of the slide to the spindle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/44—Mechanical actuating means
    • F16K31/50—Mechanical actuating means with screw-spindle or internally threaded actuating means
    • F16K31/508—Mechanical actuating means with screw-spindle or internally threaded actuating means the actuating element being rotatable, non-rising, and driving a non-rotatable axially-sliding element

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Lift Valve (AREA)

Abstract

The invention discloses a lifting plug valve which comprises a valve body, a lower valve cover, a wedge-shaped block, a plug, a valve rod and a lower shaft, wherein the valve body is provided with a valve core; the lower end of the valve body is connected with a lower valve cover through bolts and nuts; one end of a lower shaft is welded in a hole in the middle of the lower valve cover, the lower shaft is arranged at the central position of a cock, and the cock moves up and down along the lower shaft; wedge blocks are arranged on the two sides of the valve body and the cock; grooves are arranged in the front and the back of the wedge-shaped block; the wedge block moves up and down in the groove on the wedge block; a valve rod is connected above the cock in a threaded manner; the valve rod is used for lifting the cock; the technical effect of the invention is that the cock with a wedge-shaped structure is utilized, and simultaneously, an up-and-down lifting structure is adopted, so that the opening of the valve is enlarged, and the technical problems of small opening, large flow velocity loss, large damping coefficient of the cock valve and large energy loss in the prior art are solved.

Description

Lifting plug valve
Technical Field
The invention relates to a plug valve, in particular to a lifting plug valve.
Background
In the prior art, a valve core of the plug valve rotates in situ mostly, and the plug valve has the defects that the opening is small, the flow velocity loss is large, and meanwhile, the damping coefficient of the plug valve is large, so that large energy loss is caused.
Disclosure of Invention
The invention realizes a lifting plug valve according to the defects of the prior art, which is characterized by comprising a valve body, a lower valve cover, a wedge-shaped block, a plug, a valve rod and a lower shaft; the lower end of the valve body is connected with the lower valve cover through bolts and nuts; one end of the lower shaft is welded in a hole in the middle of the lower valve cover, the lower shaft is arranged at the center of the cock, and the cock moves up and down along the lower shaft; the wedge-shaped blocks are arranged on two sides of the valve body and the cock; grooves are arranged in the front and the back of the wedge-shaped block; the wedge block moves up and down in the groove on the wedge block; the valve rod is connected above the cock in a threaded mode; the valve stem is used to lift the plug.
Further, an upper end of the valve body is connected with an upper valve cover through a bolt and a nut, the valve rod penetrates through the center of the upper valve cover, an upper shaft sleeve is arranged at the bottom of the upper valve cover between the upper valve cover and the valve rod, and a first filler, a spacer ring, a second filler, a filler pressing sleeve and a filler pressing plate are sequentially arranged between the upper valve cover and the valve rod from bottom to top above the upper shaft sleeve; a small hole is transversely formed in the upper valve cover at the position of the spacer ring, and one end of the small hole is communicated with the spacer ring; the other end of the small hole is connected with a grease injection valve in a threaded manner; a bracket is fixed above the upper valve cover through bolts and threads, and a packing pressing plate is arranged inside the bracket; a reduction gearbox is fixed above the support and connected with the valve rod, a hand wheel is arranged on the reduction gearbox, the hand wheel drives the reduction gearbox, and the reduction gearbox drives the valve rod to move up and down.
Furthermore, a support leg and a blow-down valve are arranged at the lower end of the valve body; sealing gaskets are arranged between the valve body and the upper valve cover and between the valve body and the lower valve cover
Further, a venting assembly is arranged on one side of the valve body; the emptying assembly also comprises a first joint, a U-shaped pipe, a valve, a one-way valve, a three-way joint, a second joint and a pressure gauge; one end of the first joint is connected to the valve body, and the other end of the first joint is connected with one end of the U-shaped pipe; the other end of U type pipe is connected to the one end of valve, and the one end of valve is connected to the one end of check valve, and the other end of check valve is connected to three way connection's one end, and three way connection's the other end is connected to the manometer, and three way connection's third end is connected to the one end of second joint, and the other end of second joint is connected to the upper end of valve body.
Further, the wedge-shaped block is in a wedge shape with a small upper part and a big lower part; the cock is in a wedge shape with a big upper part and a small lower part.
The technical effect of the invention is that the cock with a wedge-shaped structure is utilized, and simultaneously, an up-and-down lifting structure is adopted, so that the opening of the valve is enlarged, and the technical problems of small opening, large flow velocity loss, large damping coefficient of the cock valve and large energy loss in the prior art are solved.
Drawings
Fig. 1 is a full sectional view of the present invention.
Fig. 2 is a left side view of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, the present embodiment provides a lifting plug valve, which includes a valve body 1, a lower bonnet 2, a wedge block 3, a plug 4, a valve rod 5, and a lower shaft 6; the lower end of the valve body 1 is connected with a lower valve cover 2 through a bolt and a nut 7; one end of a lower shaft 6 is welded in a hole in the middle of the lower valve cover 2, the lower shaft 6 is arranged at the center of the cock 4, and the cock 4 moves up and down along the lower shaft 6; wedge blocks 3 are arranged on two sides of the valve body 1 and the cock 4; grooves 8 are arranged in front of and behind the wedge-shaped block 3; the cock 4 moves up and down in the groove 8 on the wedge block 3; a valve rod 5 is connected above the cock 4 in a threaded manner; the valve stem 5 is used to lift the cock 4; utilize valve rod 5 to promote cock 4, cock 4 reciprocates in recess 8 on wedge 3, form the switch of plug valve, because cock 4 and wedge 3 mutually support, utilize the cock of wedge column structure, simultaneously, adopt the structure that promotes from top to bottom of valve rod 5, enlarged the opening of valve, it is little to have solved the opening that the plug valve among the prior art exists, the velocity of flow loss is big, the damping coefficient who causes the plug valve simultaneously is very big, great energy loss's technical problem has been caused.
With reference to fig. 1, in this embodiment, in order to achieve the above technical effect, an upper bonnet 9 is connected to an upper end bolt nut 1 of a valve body 1, a valve rod 5 penetrates through a central position of the upper bonnet 9, an upper shaft sleeve 10 is arranged at the bottom of the upper bonnet 9 between the upper bonnet 9 and the valve rod 5, and a first packing 11, a spacer ring 12, a second packing 13, a packing pressing sleeve 14, and a packing pressing plate 15 are sequentially arranged above the upper shaft sleeve 10 and between the upper bonnet 9 and the valve rod 5 from bottom to top; a small hole is transversely formed in the upper valve cover 9 at the position of the spacer ring 12, and one end of the small hole is communicated with the spacer ring 12; the other end of the small hole is connected with a grease injection valve 16 through screw threads; a bracket 16 is fixed on the upper part of the upper valve cover 9 through bolts and threads, and a packing pressing plate 15 is arranged inside the bracket 16; a reduction gearbox 17 is fixed above the support 16, the reduction gearbox 17 is connected with the valve rod 5, a hand wheel 18 is arranged on the reduction gearbox 17, the hand wheel 18 drives the reduction gearbox 17, the reduction gearbox 17 drives the valve rod 5 to move up and down, and the valve rod 5 drives the cock 4 to move up and down, so that the whole valve is opened and closed.
Referring to fig. 1, in addition, a support leg 19 and a blow-down valve 20 are arranged at the lower end of the valve body 1; all set up sealed pad 21 between valve body 1 and upper valve cover 9 and between valve body 1 and lower valve cover 2 for the sealed between valve body 1 and lower valve cover 2 and valve body 1 and the upper valve cover 9, thereby satisfy the sealed effect of whole valve.
In order to ensure that the whole valve can work normally, the pressure of the cock 4 needs to be balanced, so that the valve can be opened and closed more conveniently, and a venting assembly 22 is arranged on one side of the valve body 1; the emptying assembly 22 further comprises a first connector 23, a U-shaped pipe 24, a valve 25, a one-way valve 26, a three-way connector 27, a second connector 28 and a pressure gauge 29; one end of the first joint 23 is connected to the valve body 1, and the other end of the first joint 23 is connected to one end of the U-shaped pipe 24; the other end of the U-shaped pipe 24 is connected to one end of a valve 25, one end of the valve 25 is connected to one end of a check valve 26, the other end of the check valve 26 is connected to one end of a three-way joint 27, the other end of the three-way joint 27 is connected to the pressure gauge 19, the third end of the three-way joint 27 is connected to one end of a second joint 28, and the other end of the second joint 28 is connected to the upper end of the valve body 1.
In this embodiment, the wedge 3 and the cock 4 are formed in a wedge shape with a small top and a large bottom, which is more advantageous for opening and closing the whole lift cock.
As preferred embodiments of the present invention, it is apparent to those skilled in the art that the present invention is not limited to the details of the above-described exemplary embodiments, and can be embodied in other specific forms without departing from the spirit or essential characteristics thereof, and the scope thereof is also covered by the present invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims (5)

1. A lifting plug valve is characterized by comprising a valve body, a lower valve cover, a wedge-shaped block, a plug, a valve rod and a lower shaft; the lower end of the valve body is connected with the lower valve cover through bolts and nuts; one end of the lower shaft is welded in a hole in the middle of the lower valve cover, the lower shaft is arranged at the center of the cock, and the cock moves up and down along the lower shaft; the wedge-shaped blocks are arranged on two sides of the valve body and the cock; grooves are arranged in the front and the back of the wedge-shaped block; the cock moves up and down in the groove on the wedge-shaped block; the valve rod is connected above the cock in a threaded mode; the valve stem is used to lift the plug.
2. A lifting plug valve as claimed in claim 1, wherein a bolt and a nut are connected to the upper end of the valve body to form an upper valve cover, the valve rod penetrates through the center of the upper valve cover, an upper shaft sleeve is arranged at the bottom of the upper valve cover between the upper valve cover and the valve rod, and a first packing, a spacer ring, a second packing, a packing pressing sleeve and a packing pressing plate are sequentially arranged above the upper shaft sleeve and between the upper valve cover and the valve rod from bottom to top; a small hole is transversely formed in the upper valve cover at the position of the spacer ring, and one end of the small hole is communicated with the spacer ring; the other end of the small hole is connected with a grease injection valve in a threaded manner; a bracket is fixed above the upper valve cover through bolts and threads, and a packing pressing plate is arranged inside the bracket; a reduction gearbox is fixed above the support and connected with the valve rod, a hand wheel is arranged on the reduction gearbox, the hand wheel drives the reduction gearbox, and the reduction gearbox drives the valve rod to move up and down.
3. A poppet cock as claimed in claim 2, wherein a foot and a waste valve are provided at the lower end of the valve body; sealing gaskets are arranged between the valve body and the upper valve cover and between the valve body and the lower valve cover.
4. A lift plug valve according to claim 3 wherein a vent assembly is provided on one side of said valve body; the emptying assembly also comprises a first joint, a U-shaped pipe, a valve, a one-way valve, a three-way joint, a second joint and a pressure gauge; one end of the first joint is connected to the valve body, and the other end of the first joint is connected with one end of the U-shaped pipe; the other end of U type pipe is connected to the one end of valve, and the one end of valve is connected to the one end of check valve, and the other end of check valve is connected to three way connection's one end, and three way connection's the other end is connected to the manometer, and three way connection's third end is connected to the one end of second joint, and the other end of second joint is connected to the upper end of valve body.
5. A lift plug valve according to claim 1 wherein said wedge block is in the form of a wedge having a smaller upper portion and a larger lower portion; the cock is in a wedge shape with a big upper part and a small lower part.
CN201911343465.6A 2019-12-24 2019-12-24 Lifting plug valve Pending CN111022687A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201911343465.6A CN111022687A (en) 2019-12-24 2019-12-24 Lifting plug valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201911343465.6A CN111022687A (en) 2019-12-24 2019-12-24 Lifting plug valve

Publications (1)

Publication Number Publication Date
CN111022687A true CN111022687A (en) 2020-04-17

Family

ID=70211828

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201911343465.6A Pending CN111022687A (en) 2019-12-24 2019-12-24 Lifting plug valve

Country Status (1)

Country Link
CN (1) CN111022687A (en)

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