CN206130216U

CN206130216U - Plug valve

Info

Publication number: CN206130216U
Application number: CN201621171912.6U
Authority: CN
Inventors: 戴义明; 戴京
Original assignee: JIANGSU TENGLONG PETROCHEMICAL MACHINERY Co Ltd
Current assignee: JIANGSU TENGLONG PETROCHEMICAL MACHINERY Co Ltd
Priority date: 2016-10-26
Filing date: 2016-10-26
Publication date: 2017-04-26
Anticipated expiration: 2026-10-26

Abstract

The utility model discloses a plug valve, which comprises the following components: a valve body, the valve body about both ends respectively fixed mounting have first connecting portion and second connecting portion, the inner chamber central point of valve body puts swing joint has the valve rod, the bottom welding of valve rod has the case, the upper and lower both ends of case all are equipped with sealed the pad, the sealed outside fixed mounting who fills up there is the clamp plate, the inner chamber fixed mounting of case has the flow reversal device of preventing, prevent that flow reversal device includes the supporting seat, the inboard left end fixed mounting of supporting seat has the backup pad, the outer wall of backup pad is equipped with the through -hole, the right side fixed mounting of backup pad has the overcoat body, the inner chamber sliding connection of the overcoat body has the cardboard, the right side of the overcoat body is equipped with the closure plate, the cardboard passes through the connecting rod and links to each other with the closure plate. This plug valve can prevent through preventing flow reversal device that the fluid of second connecting portion from flowing into first connecting portion, has avoided the fluid refluence and the serious consequence brought, has made things convenient for the user.

Description

A kind of plug valve

Technical field

The utility model is related to valve technology field, specially a kind of plug valve.

Background technology

In various types of valves, plug valve is the one kind being most widely used, and plug valve is closure member or plunger shape Rotary valve, make the passway on valve plug identical with the passway on valve body or separate by rotation, realize what is be turned on and off A kind of valve, it is widely used in oil, gas exploitation course, currently used for jet-preventing tool in the plug valve of Oil/gas Well Mainly be made up of upper valve base, lower valve base, spiral, rotary switch etc., to avoid high pressure drilling in Prevention of blowout accident generation, example Such as the patent of Patent No. 201520278232.3, including valve body, upper valve base, spiral, lower valve base and Knob mechanismses, valve body has Fourth lane, upper valve base, spiral and lower valve base are formed with the locating shoulder of lower valve base in fourth lane in fourth lane, Although a certain degree of durability that improve plug valve, can not prevent the refluence of fluid, reverse flow of fluids is caused to bring seriously Consequence, bring great inconvenience to user.

Utility model content

The purpose of this utility model is to provide a kind of plug valve, to solve the problems, such as above-mentioned background technology in propose.

For achieving the above object, the utility model provides following technical scheme：A kind of plug valve, including valve body, the valve The left and right two ends of body are installed with respectively first connecting portion and second connecting portion, and the lumen centers position activity of the valve body is even Valve rod is connected to, the bottom of the valve rod is welded with valve element, and the upper and lower ends of the valve element are equipped with sealing gasket, the sealing gasket Outside is installed with pressing plate, and the inner chamber of the valve element is installed with anti-backflow device, and the anti-backflow device includes supporting Seat, the inside left-end of the support base is installed with gripper shoe, and the outer wall of the gripper shoe is provided with through hole, the gripper shoe Right side is installed with outer sleeve body, and the inner chamber of the outer sleeve body slidably connects clamp, on the right side of the outer sleeve body closure plate is provided with, The clamp is connected by connecting rod with closure plate, and the clamp is connected by spring with outer sleeve body, and the top of the valve body is provided with Bull stick, the bull stick is connected by connecting rod with valve rod.

Preferably, the bottom of the valve element is provided with axle sleeve, and the axle sleeve is connected by rotating shaft with valve element.

Preferably, it is installed with sealing ring on the outside of the closure plate.

Preferably, the connecting rod is installed with sliding connector with the junction of outer sleeve body.

Preferably, the left and right two ends outer wall of the bull stick is socketed with handle sleeve.

Compared with prior art, the beneficial effects of the utility model are：The plug valve, is connected by first connecting portion, second The cooperation of socket part, valve rod, valve element and anti-backflow device, the second company is flowed into by the control of valve rod rotational valve core from first connecting portion The flow of the fluid of socket part, flow control is accurate, by anti-backflow device the fluid of second connecting portion can be prevented to be flowed into the One connecting portion, it is to avoid reverse flow of fluids and the serious consequence brought, facilitates user.

Description of the drawings

Fig. 1 is the utility model structural representation；

Fig. 2 is valve element cross section structure diagram of the present utility model；

Fig. 3 is anti-backflow device structural representation of the present utility model.

In figure：1st, valve body, 2, first connecting portion, 3, second connecting portion, 4, valve rod, 5, valve element, 6, sealing gasket, 7, pressing plate, 8th, anti-backflow device, 801, support base, 802, gripper shoe, 803, through hole, 804, outer sleeve body, 805, clamp, 806, closure plate, 807, Connecting rod, 808, spring, 809, sealing ring, 810, sliding connector, 9, bull stick, 10, connecting rod, 11, axle sleeve, 12, rotating shaft, 13, Handle sleeve.

Specific embodiment

Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is carried out Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of the utility model, rather than whole Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made The every other embodiment for being obtained, belongs to the scope of the utility model protection.

Fig. 1-3 are referred to, the utility model provides a kind of technical scheme：A kind of plug valve, including valve body 1, valve body 1 has Very high intensity and corrosion resistance, the left and right two ends of the valve body 1 are installed with respectively first connecting portion 2 and second connecting portion 3, fluid Jing first connecting portion 2 flow to second connecting portion 3, and the lumen centers position of the valve body 1 is connected with valve rod 4, institute The bottom for stating valve rod 4 is welded with valve element 5, and by valve rod 4 anglec of rotation of valve element 5 is controlled, described so as to control the flow of fluid The upper and lower ends of valve element 5 are equipped with sealing gasket 6, and peace is fixed in the outside that sealing gasket 6 has good sealing, the sealing gasket 6 Equipped with pressing plate 7, the inner chamber of the valve element 5 is installed with anti-backflow device 8, and the anti-backflow device 8 includes support base 801, Support base 801 plays a part of to support anti-backflow device 8, the inside left-end of the support base 801 to be installed with gripper shoe 802, the outer wall of the gripper shoe 802 is provided with through hole 803, and fluid via through holes 803 flow into anti-backflow device 8, the gripper shoe 802 right side is installed with outer sleeve body 804, and the inner chamber of the outer sleeve body 804 slidably connects clamp 805, and clamp 805 is outside Slide in body 804, the right side of the outer sleeve body 804 is provided with closure plate 806, and the clamp 805 is by connecting rod 807 and closure plate 806 are connected, and the clamp 805 is connected by spring 808 with outer sleeve body 804, and fluid makes under the effect of the pressure through through hole 803 Closure plate 806 is moved right, and closure plate 806 drives the extrusion spring 808 of clamp 805, spring 808 that elastic shape occurs by connecting rod 807 Become, when the pressure of the fluid of first connecting portion 2 is less than 3 Fluid pressure of second connecting portion, the fluid of second connecting portion 3 is transported to the left Dynamic, closure plate 806 blocks through hole 803 to left movement in the presence of spring 808, and the fluid for preventing second connecting portion 3 flows to the One connecting portion 2, it is to avoid reverse flow of fluids and the serious consequence that produces, the top of the valve body 1 is provided with bull stick 9, and the bull stick 9 leads to Cross connecting rod 10 to be connected with valve rod 4, bull stick 9 is rotated by connecting rod 10 with ovable valve stem 4, the bottom of the valve element 5 is provided with axle sleeve 11, institute State axle sleeve 11 to be connected with valve element 5 by rotating shaft 12, the stability of valve element 5 can be increased by the cooperation of axle sleeve 11 and rotating shaft 12, The outside of the closure plate 806 is installed with sealing ring 809, and sealing ring 809 improves the sealing of closure plate 806, the connecting rod 807 are installed with sliding connector 810 with the junction of outer sleeve body 804, and the left and right two ends outer wall of the bull stick 9 is socketed with Handle sleeve 13.

When the device works, the device is arranged on the interface of pipeline according to the flow direction of fluid, first passes through fluid Again through second connecting portion 3, bull stick 9 is rotated first connecting portion 2 by connecting rod 10 with ovable valve stem 4, and valve rod 4 rotates with movable valve plug 5, By the flow for controlling the angle of valve element 5 to control fluid, fluid Jing first connecting portions 2 flow into valve element 5, and fluid is through through hole 803 under the effect of the pressure move right closure plate 806, and closure plate 806 drives the extrusion spring of clamp 805 by connecting rod 807 808, there is elastic deformation in spring 808, when the pressure of the fluid of first connecting portion 2 is less than 3 Fluid pressure of second connecting portion, second The fluid of connecting portion 3 to left movement, closure plate 806 block through hole 803 to left movement in the presence of spring 808, prevent second The fluid of connecting portion 3 flows to first connecting portion 2, it is to avoid reverse flow of fluids and the serious consequence that produces.

While there has been shown and described that embodiment of the present utility model, for the ordinary skill in the art, It is appreciated that these embodiments can be carried out various changes in the case of without departing from principle of the present utility model and spirit, repaiies Change, replace and modification, scope of the present utility model is defined by the appended claims and the equivalents thereof.

Claims

1. a kind of plug valve, including valve body（1）, it is characterised in that：The valve body（1）Left and right two ends be installed with respectively One connecting portion（2）And second connecting portion（3）, the valve body（1）Lumen centers position be connected with valve rod（4）, the valve Bar（4）Bottom be welded with valve element（5）, the valve element（5）Upper and lower ends be equipped with sealing gasket（6）, the sealing gasket（6）'s Outside is installed with pressing plate（7）, the valve element（5）Inner chamber be installed with anti-backflow device（8）, the anti-backflow device （8）Including support base（801）, the support base（801）Inside left-end be installed with gripper shoe（802）, the gripper shoe （802）Outer wall be provided with through hole（803）, the gripper shoe（802）Right side be installed with outer sleeve body（804）, the overcoat Body（804）Inner chamber slidably connect clamp（805）, the outer sleeve body（804）Right side be provided with closure plate（806）, the clamp （805）By connecting rod（807）With closure plate（806）It is connected, the clamp（805）By spring（808）With outer sleeve body（804）Phase Even, the valve body（1）Top be provided with bull stick（9）, the bull stick（9）By connecting rod（10）With valve rod（4）It is connected.

2. a kind of plug valve according to claim 1, it is characterised in that：The valve element（5）Bottom be provided with axle sleeve（11）, The axle sleeve（11）By rotating shaft（12）With valve element（5）It is connected.

3. a kind of plug valve according to claim 1, it is characterised in that：The closure plate（806）Outside be installed with Sealing ring（809）.

4. a kind of plug valve according to claim 1, it is characterised in that：The connecting rod（807）With outer sleeve body（804）'s Junction is installed with sliding connector（810）.

5. a kind of plug valve according to claim 1, it is characterised in that：The bull stick（9）Left and right two ends outer wall cover It is connected to handle sleeve（13）.