CN211117751U

CN211117751U - Plug valve

Info

Publication number: CN211117751U
Application number: CN201921972511.4U
Authority: CN
Inventors: 姜鹏; 卞慎坤; 姜法宏; 张辉; 崔建; 李桂金
Original assignee: Qingdao Hengxin Plastic Co ltd
Current assignee: Qingdao Hengxin Plastic Co ltd
Priority date: 2019-11-14
Filing date: 2019-11-14
Publication date: 2020-07-28
Anticipated expiration: 2029-11-14

Abstract

The utility model relates to a plug valve belongs to valve technical field, include the valve body and install the case in the valve body, the both ends of valve body are equipped with liquid outlet and inlet, still include the pivot, the case includes sealed end, the link that is connected with sealed end and is located the end of opening that supplies the fluid to pass through between sealed end and the link, sealed end cooperatees with the liquid outlet, the case is along with the pivot at the valve body internal rotation and produce linear displacement, sealed the pad not with the friction of valve body inner wall, the life of very big extension valve, and have simple structure, simple operation's characteristics, have wide popularization prospect.

Description

Plug valve

Technical Field

The utility model belongs to the technical field of valve equipment, specifically speaking relates to a plug valve.

Background

The valve is a control part in a fluid conveying system and has the functions of stopping, adjusting, guiding, preventing counter flow, stabilizing pressure, shunting or overflowing and relieving pressure and the like.

Valves used in fluid control systems range in variety and size from the simplest shut-off valves to the variety of valves used in extremely complex autonomous systems. The valve can be used for controlling the flow of various types of fluids such as air, water, steam, various corrosive media, slurry, oil products, liquid metal, radioactive media and the like.

At present, common valves mainly have ball valve and butterfly valve two categories, use more extensively, but the problem that exists is also more, rotates the extrusion that receives that the in-process sealing washer lasts at ball valve and butterfly valve, and at the rotation in-process, the sealing washer is very easily deviate from, leads to sealed failure. Therefore, how to reduce the extrusion to the sealing ring in the rotating process and prolong the service life of the valve is a problem to be solved.

SUMMERY OF THE UTILITY MODEL

Aiming at various defects in the prior art, the plug valve capable of effectively reducing the abrasion of the sealing ring and prolonging the service life is provided.

In order to achieve the above object, the utility model provides a following technical scheme:

the utility model provides a plug valve, includes the valve body and installs the case in the valve body, the both ends of valve body are equipped with liquid outlet and inlet, still include the pivot, the case includes sealed end, the link that is connected with sealed end and is located the end of opening that supplies fluid to pass through between sealed end and the link, sealed end cooperatees with the liquid outlet, the case is along with the pivot at the valve body internal rotation and produce linear displacement.

Furthermore, the connecting end is arranged on the same side of the sealing end oppositely, and the opening end and the connecting end are both positioned on the same side of the sealing end.

Furthermore, the sealing end comprises a sealing plate and a sealing ring arranged around the sealing plate, and a taper guide surface is arranged between the sealing ring and the sealing plate and used for being matched with the liquid outlet.

Further, the link is including connecting the fixed disk and fixing the swivelling chute on connecting the fixed disk, installs the bulge loop in the swivelling chute, and its inboard is provided with first breach and the bulge loop cooperatees.

Furthermore, a space for accommodating the elastic device is arranged between the convex ring and the rotating groove, and two sides of the convex ring are respectively abutted against the rotating groove and the elastic device.

Furthermore, a first through hole and a second through hole for the rotating shaft to penetrate through are formed in the connecting fixing disc and the convex ring, and the first through hole is located in the rotating groove.

Furthermore, the periphery of the rotating groove is provided with a limiting protrusion, and the inner side of the rotating groove is provided with a spring fixing groove for mounting an elastic device.

Furthermore, the rotating shaft comprises a rotating shaft body and a handle part which are of an integrated structure, the rotating shaft body extends into the valve body and is matched with the valve core, and the handle part is positioned on the outer side of the valve body.

Further, the cross section of the rotating shaft body is the same as that of the second through hole in shape and used for transmitting the rotating torque of the rotating shaft body.

Furthermore, the cross section of the rotating shaft body and the cross section of the second through hole are triangular or polygonal.

Further, the inner wall both sides of valve body have been seted up and have been held the mounting groove of link, the mounting groove sets up along the length direction of valve body.

Furthermore, the interval is provided with two spacing grooves that hold spacing protrudingly in the mounting groove, spacing protrudingly removes between two spacing grooves, realizes the conversion of the parallel and non-parallel state of sealed end and liquid outlet.

Furthermore, a first fixing through hole for the rotating shaft body to penetrate through is formed in one mounting groove, and a blind hole for fixing the end part of the rotating shaft body is formed in the other mounting groove.

Further, the inboard of liquid outlet is provided with the sealed seal groove that fills up of holding, the sealing ring with sealed the sealed cooperation that fills up.

The utility model has the advantages that:

1. sealed pad is installed in the seal groove and it does not rotate along with the case, just with sealed the pad contact after sealed end rotates the position that the liquid outlet parallels, has changed the drawback of continuous friction between sealed pad and the valve body in the past, the factor of safety of increase plug valve, the life of very big degree extension plug valve, for the enterprise saves the cost, by the very big reduction of possibility that the seepage appears in valve department in the material transportation.

2. The pivot body passes through the bulge loop to be installed at the swivelling chute, the pars protuberant of bulge loop cooperatees with first breach, rotate the pivot body, the case rotates thereupon, spacing protrudingly cooperatees with the spacing groove simultaneously, the rotation range of restriction case, guarantee that sealed end rotates to the position parallel with the liquid outlet, rotate the pivot body again, the pars protuberant of bulge loop under the effect of external force is out first breach and with sealed end to the position promotion that is close to the liquid outlet, sealed end cooperatees with sealed the pad, realize sealed, only rotate the pivot and can realize the sealed of plug valve, think about ingeniously.

3. The periphery of sealing ring and the edge of closing plate are provided with the tapering spigot surface between, and the closing plate offsets with the liquid outlet and tends to the in-process sealed, can offset with liquid outlet department all the time, reinforcing sealed effect.

4. Simple structure, installation and use are all very convenient.

Drawings

FIG. 1 is a schematic structural view of a valve body;

FIG. 2 is another schematic structural view of the valve body;

FIG. 3 is a cross-sectional view of the valve body;

FIG. 4 is a schematic structural view of the valve cartridge;

FIG. 5 is a schematic view of the seal end and the connection end;

FIG. 6 is a schematic view of a portion of the structure at A in FIG. 5;

FIG. 7 is a cross-sectional view of the seal plate and seal ring;

FIG. 8 is a schematic structural view of a male ring;

FIG. 9 is a schematic view of an elastic device;

fig. 10 is a schematic structural view of the rotating shaft.

In the drawings:

1-a liquid outlet and 101-a sealing groove;

2-liquid inlet;

3-sealing end, 301-sealing plate, 302-sealing ring, 303-taper guiding surface;

4-connecting end, 401-connecting fixed disk, 402-rotating groove, 403-convex ring, 404-first gap, 405-elastic device, 406-spring fixed groove, 407-first through hole, 408-second through hole and 409-limiting protrusion;

5-open end;

6-rotating shaft, 601-rotating shaft body, 602-handle part, 603-limiting block;

7-mounting groove, 701-limiting groove, 702-first fixing through hole, 703-blind hole and 704-rotary fixing groove.

Detailed Description

In order to make those skilled in the art better understand the technical solution of the present invention, the following description, together with the drawings of the present invention, clearly and completely describes the technical solution of the present invention, and based on the embodiments in the present application, other similar embodiments obtained by those skilled in the art without creative efforts shall all belong to the protection scope of the present application. In addition, directional terms such as "upper", "lower", "left", "right", etc. in the following embodiments are directions with reference to the drawings only, and thus, the directional terms are used for illustrating the present invention and not for limiting the present invention.

The present invention will be further described with reference to the accompanying drawings and preferred embodiments.

Referring to fig. 1-10, a plug valve, includes case and valve body, the case is installed in the valve body, the both ends of valve body are equipped with liquid outlet 1 and inlet 2, still include pivot 6, the case includes sealed end 3, link 4 and opening end 5, link 4 is connected with sealed end 3, just opening end 5 is located between sealed end 3 and the link 4 for supply fluid passes through, pivot 6 cooperatees with link 4, sealed end 3 cooperatees with liquid outlet 1, rotates pivot 6 and realizes that the case rotates and produce linear motion in the valve body, and then realizes opening and closed of plug valve.

Example one

Referring to fig. 1 to 7, the connecting end 4 is oppositely disposed on the same side of the sealing end 3, and the opening end 5 and the connecting end 4 are both located on the same side of the sealing end 3. The sealing end 3 comprises a sealing plate 301 and a sealing ring 302, and the sealing ring 302 is fixedly connected with the sealing plate 301. Meanwhile, the sealing ring 302 is located on one side far away from the connecting end 4, the diameter of the sealing ring 302 is smaller than that of the sealing plate 301, when the sealing end 3 is in a sealing state, the sealing ring 302 abuts against the liquid outlet 1, in order to enhance the sealing effect of the sealing ring 302 and the liquid outlet 1, a taper guide surface 303 is arranged between the periphery of the sealing ring 302 and the edge of the sealing plate 301, the taper guide surface 303, the sealing plate 301 and the sealing ring 302 are integrated, and in the process that the sealing ring 302 and the liquid outlet 1 abut against each other and tend to be sealed, due to the existence of the taper guide surface 303, the sealing ring 302 and the liquid outlet 1 can always abut against each other, and the sealing effect is enhanced. In this embodiment, the valve body is cylindrical, and the plane of the connecting end 4 is perpendicular to the plane of the sealing end 3.

In order to better seal the joint of the liquid outlet 1 and the valve core, a sealing groove 101 for accommodating a sealing gasket is arranged in the liquid outlet 1, and the sealing ring 302 is in sealing fit with the sealing gasket.

The connecting end 4 comprises a connecting fixed disk 401 and a rotating groove 402, a convex ring 403 is installed in the rotating groove 402, the rotating groove 402 is in a circular ring shape and located on the outer side of the connecting fixed disk 401, a first notch 404 matched with a protruding part of the convex ring 403 is arranged on the inner side of the rotating groove 402, meanwhile, a space for accommodating an elastic device 405 is arranged between the convex ring 403 and the rotating groove 402, and two sides of the convex ring 403 abut against the rotating groove 402 and the elastic device 405 respectively. The rotating shaft 6 penetrates through and is connected with the connecting end 4 and the convex ring 403 at two sides. Specifically, a spring fixing groove 406 for installing an elastic device 405 is provided inside the rotation groove 402, one end of the elastic device 405 is fixed in the spring fixing groove 406, and the other end thereof is a free end. In this embodiment, the elastic device 405 is a spring plate.

In order to facilitate the connection and matching of the rotating shaft 6 and the connecting end 4, a first through hole 407 through which the rotating shaft 6 passes is formed in the connecting fixing disc 401, and a second through hole 408 through which the rotating shaft 6 passes is formed in the convex ring 403, and the first through hole 407 is located in the rotating groove 402. When the rotating shaft 6 is matched with the connecting end 4, the protruding part of the convex ring 403 is installed in the first notch 404, the second through hole 408 is ensured to be overlapped with the first through hole 407, and the rotating shaft 6 sequentially penetrates through the second through hole 408 and the first through hole 407 on the two sides, so that the valve body can be assembled. In addition, a stopper protrusion 409 is disposed at the periphery of the rotation groove 402, and the stopper protrusion 409 is integrally formed with the rotation groove 402.

Example two

Referring to fig. 1, 2 and 10, 5 and 7, the rotating shaft 6 includes a rotating shaft body 601 and a handle portion 602 which are integrated into a whole, the rotating shaft body 601 is bent upwards to form the handle portion 602, a limit fixing block is movably connected to a joint of the rotating shaft body 601 and the handle portion 602, and a limit block 603 is fixedly arranged on the limit fixing block. Specifically, the two sides of the rotating shaft body 601 are fixedly provided with positioning pins, and the limiting fixing block is movably connected with the rotating shaft 6 through the positioning pins. The rotating shaft body 601 extends into the valve body to be matched with the valve core, the handle part 602 is located on the outer side of the valve body, and specifically, the rotating shaft body 601 sequentially penetrates through the second through hole 408 and the first through hole 407 to be matched with the connecting end 4. Meanwhile, the cross section of the rotating shaft body 601 is the same as the cross section of the second through hole 408. In order to transmit the torque of the rotation shaft body 601, the cross section of the rotation shaft body 601 and the shape of the second through hole 408 are both triangular or polygonal. That is, by rotating the rotating shaft 6, the protruding ring 403 rotates, and at the same time, since the protruding portion of the protruding ring 403 is engaged with the first notch 404, the valve core rotates along with the rotating shaft 6. In this embodiment, the cross section of the rotating shaft body 601 and the second through hole 408 are both quadrilateral.

EXAMPLE III

Referring to fig. 1 to 3, mounting grooves 7 for accommodating the connecting end 4 are formed in two sides of the inner wall of the valve body, the mounting grooves 7 are arranged along the length direction of the valve body, the two mounting grooves 7 are arranged at intervals, and two limiting grooves 701 are arranged in the mounting grooves 7 at intervals and used for accommodating the limiting protrusions 409. That is to say, when the rotating shaft body 601 rotates, the limiting protrusions 409 move in the two limiting grooves 701, the limiting protrusions 409 effectively limit the rotation of the rotating shaft body 601, and the sealing end 3 and the liquid outlet 1 are parallel to each other and in a non-parallel state while the rotating shaft body 601 rotates.

In order to better fix the valve core and the valve body, a first fixing through hole 702 for the rotating shaft body 601 to penetrate through is formed in one mounting groove 7, and a blind hole 703 is formed in the other mounting groove 7, wherein the blind hole 703 is used for fixing the end part of the rotating shaft body 601. Meanwhile, a rotating fixing groove 704 matched with the limiting block 603 is formed in the outer side of the valve body corresponding to the first fixing through hole 702, the limiting block 603 is installed in the rotating fixing groove 704, and the rotating range of the rotating shaft 6 is effectively limited.

When the plug valve is installed, the convex ring 403 is installed in the rotating groove 402, the elastic device 405 is fixed in the spring fixing groove 406, the protruding part of the convex ring 403 is ensured to be positioned in the first notch 404, the bottom of the convex ring is abutted against the elastic device 405, the first through hole 407 and the second through hole 408 are ensured to be overlapped, the connecting end 4 which is matched with the convex ring 403 and is installed in the valve body along the installation groove 7, the first fixing through hole 702, the second through hole 408 and the first through hole 407 are ensured to be overlapped, the rotating shaft body 601 sequentially penetrates through the first fixing through hole 702, the second through hole 408 and the first through hole 407, the end part of the rotating shaft body 601 sequentially penetrates through the first through hole 407 and the second through hole 408 on the other side, the end part of the rotating shaft body is installed in the blind hole 703, the limit card is installed between the rotating shaft body 601 and the first fixing through hole 702 for preventing the rotating shaft 6 from being pulled out from the, meanwhile, the stopper 603 is installed in the rotation fixing groove 704.

When using this plug valve, during initial condition, the plug valve is in the open mode, sealed end 3 is located the one side that is close to the valve body inner wall, rotates handle portion 602, connects fixed disk 401 and removes the in-process to another spacing groove 701 by a spacing groove 701, and the bulge and the first breach 404 looks block of bulge loop 403, in pivot body 601 pivoted, sealed end 3 and link 4 rotate along with it, sealed end 3 rotates to the position parallel to each other with liquid outlet 1, at this moment, continue to rotate handle portion 602, and the bulge of bulge loop 403 breaks away from first breach 404 under the exogenic action, and its lower part is in compression elastic component 405, and link 4 is linear motion to the direction that is close to liquid outlet 1, with sealed end 3 and the sealed pad in the seal groove 101 of link 4 structure of becoming an organic whole offset, realizes closing of plug valve.

Handle portion 602 rotates in the opposite direction, and elastic device 405 assists the bulge of bulge loop 403 to reset to in the first breach 404, simultaneously, link 4 and sealed end 3 are linear motion along the direction of keeping away from liquid outlet 1, keep away from sealed the pad, and tapering spigot surface 303 and liquid outlet 1 phase separation continue to rotate handle portion 602, sealed end 3 rotates to the direction that is close to the valve body lateral wall around pivot body 601, and when sealed end 3 and liquid outlet 1 were not parallel, opening end 5 intercommunication inlet 2 and liquid outlet 1 realized the cock and opened.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the scope of the invention, i.e. the present invention is intended to cover all equivalent variations and modifications within the scope of the present invention.

Claims

1. The utility model provides a plug valve, includes the valve body and installs the case in the valve body, the both ends of valve body are equipped with liquid outlet (1) and inlet (2), its characterized in that still includes pivot (6), the case is including sealed end (3), link (4) that are connected with sealed end (3) and be located sealed end (3) and link (4) between supply opening end (5) that the fluid passed through, sealed end (3) cooperate with liquid outlet (1), the case is along with pivot (6) at the valve body internal rotation and produce linear displacement.

2. A plug valve according to claim 1, wherein the connecting end (4) is oppositely disposed on the same side of the sealing end (3), and the opening end (5) and the connecting end are both located on the same side of the sealing end.

3. A plug valve according to claim 2, wherein the sealing end (3) comprises a sealing plate (301) and a sealing ring (302) disposed around the sealing plate (301), and a tapered guide surface (303) is disposed between the sealing ring (302) and the sealing plate (301) for cooperating with the outlet (1).

4. The plug valve according to claim 1, wherein the connecting end (4) comprises a connecting fixing disk (401) and a rotating groove (402) fixed on the connecting fixing disk (401), a convex ring (403) is installed in the rotating groove (402), and a first notch (404) is arranged on the inner side of the rotating groove and matched with the convex ring (403).

5. A plug valve according to claim 4, characterized in that a space for accommodating the elastic means (405) is provided between the collar (403) and the rotation slot (402), and both sides of the collar (403) are respectively abutted against the rotation slot (402) and the elastic means (405).

6. The plug valve according to claim 5, wherein the connecting fixed disk (401) and the convex ring (403) are provided with a first through hole (407) and a second through hole (408) for the rotating shaft (6) to pass through, and the first through hole (407) is located in the rotating groove (402).

7. A plug valve according to claim 6, characterized in that the periphery of the rotation groove (402) is provided with a stop protrusion (409) and the inside thereof is provided with a spring fixing groove (406) for mounting the elastic means (405).

8. A plug valve according to any one of claims 1 to 7, wherein the shaft (6) comprises a shaft body (601) and a handle portion (602) in an integral structure, the shaft body (601) extends into the valve body to cooperate with the valve plug, and the handle portion (602) is located outside the valve body.

9. A plug valve according to claim 8, wherein the cross-section of the shaft body (601) is the same as the cross-section of the second through hole (408) for transmitting the torque of the rotation of the shaft body (601).

10. A plug valve according to claim 9, wherein the cross-section of the body (601) of the shaft and the cross-section of the second through hole (408) are triangular or polygonal.

11. The plug valve according to claim 1, characterized in that mounting grooves (7) for accommodating the connecting ends (4) are formed in two sides of the inner wall of the valve body, and the mounting grooves (7) are arranged along the length direction of the valve body.

12. The plug valve according to claim 11, wherein two limiting grooves (701) for accommodating the limiting protrusions (409) are arranged in the mounting groove (7) at intervals, and the limiting protrusions (409) move between the two limiting grooves (701) to realize the conversion between the parallel state and the non-parallel state of the sealing end (3) and the liquid outlet (1).

13. A plug valve according to claim 12, wherein one of the mounting grooves (7) has a first fixing through hole (702) for the shaft body (601) to pass through, and the other mounting groove (7) has a blind hole (703) for fixing the end of the shaft body (601).

14. A plug valve according to claim 3, characterized in that the inner side of the outlet opening (1) is provided with a sealing groove (101) for receiving a sealing gasket, and the sealing ring (302) is in sealing engagement with the sealing gasket.