CN218408576U

CN218408576U - Movable seal seat flat gate valve

Info

Publication number: CN218408576U
Application number: CN202221978673.0U
Authority: CN
Inventors: 张荣伟; 叶挺挺; 康昭钟; 唐永健; 叶盛; 朱清明; 鲁建明
Original assignee: Fangyuan Valve Group Co ltd
Current assignee: Fangyuan Valve Group Co ltd
Priority date: 2022-07-27
Filing date: 2022-07-27
Publication date: 2023-01-31
Anticipated expiration: 2032-07-27

Abstract

The utility model discloses a movable seal receptacle plate valve, which comprises a valve body, it has horizontal runner to open in the valve body, valve body department installs the flashboard, the left side of flashboard, the right side both sides all are equipped with the seal receptacle, all install first O type circle on two seal receptacles, all install the sealing washer on the opposite face of two seal receptacles, all install rubber triangular seal circle on the opposite face of two seal receptacles, the lateral part of two seal receptacles all is provided with compression spring, open the bottom of flashboard has horizontal water conservancy diversion hole, the valve body is located the flashboard left side, the right side department all opens there is the forked tail slot, all be fixed with the forked tail piece on two seal receptacles, all install second O type circle on two forked tail pieces, install the valve rod that drives the flashboard up and down the removal on the valve body. The utility model discloses structural design is ingenious, reasonable, can improve plate valve's leakproofness, increase the corrosion resistance of elastic component, increase the anti bending capability of flashboard, increase plate valve's life, reduce use cost, be worth popularizing and applying.

Description

Movable seal seat flat gate valve

Technical Field

The utility model relates to a valve, especially a movable seal receptacle plate valve.

Background

The gate valve (gate valve) is an opening and closing member gate plate, the movement direction of the gate plate is perpendicular to the fluid direction, the sealing form of the existing gate valve to the gate plate is composed of a sealing seat and a sealing ring on the sealing seat, although the sealing and opening effects on a pipeline can be achieved, the frequent opening of the gate plate can cause the sealing ring on the pressure side of the gate plate to be easily worn and damaged due to the fact that medium pressure acts on the gate plate, when the gate plate is opened or closed, the pressure on the sealing ring on the pressure side of the gate plate is higher, friction force can also mostly act on the sealing ring on the pressure side of the gate plate, and further the sealing ring on the pressure side of the gate plate is easiest to wear and damage due to the fact that medium pressure acts on the gate plate.

The Chinese utility model patent CN 205383282U discloses a bidirectional flat gate valve, which comprises a valve body and a gate plate, wherein a valve seat hole is arranged on the valve body, a disc spring, a rear valve seat and a front valve seat are sequentially arranged in the valve seat hole from inside to outside, one side end surface of the front valve seat is provided with a hard sealing surface which is attached to the gate plate, the other side end surface of the front valve seat is provided with a counter bore, the rear valve seat is inserted and installed in the counter bore, and a graphite ring is arranged between the front valve seat and the rear valve seat; the elastic parts (disk spring and cylindrical spiral spring) of the bidirectional flat gate valve are exposed in a medium for a long time during use, are easily corroded to cause elastic failure, need to be replaced frequently, and increase the use cost.

SUMMERY OF THE UTILITY MODEL

The utility model discloses solve above-mentioned prior art's shortcoming, provide one kind and can carry out position compensation to the sealed face of the sealing washer of wearing and tearing and the elastic component can not with carry medium contact, the long-term useful movable seal seat plate gate valve of elastic component, satisfied plate gate valve long service life, demand that use cost is low.

The utility model provides a technical scheme that its technical problem adopted: the movable sealing seat flat gate valve comprises a valve body, a transverse flow channel is formed in the valve body, a flashboard used for opening and closing the transverse flow channel is installed at the position of the valve body, the left side and the right side of the flashboard are respectively provided with a sealing seat inserted on the valve body, a first O-shaped ring matched with the valve body is installed on each sealing seat, sealing rings attached to the plane of the flashboard are installed on the opposite surfaces of the two sealing seats, rubber triangular sealing rings attached to the plane of the flashboard and located above the sealing rings are installed on the opposite surfaces of the two sealing seats, compression springs used for pressing the sealing rings and the rubber triangular sealing rings on the flashboard are arranged on the lateral portions of the two sealing seats, transverse flow guide holes consistent with the cross section of the transverse flow channel are formed in the bottom of the flashboard, dovetail slots are formed in the left side and the right side of the valve body, dovetail blocks respectively fixed on the two sealing seats and matched with the two dovetail slots in an inserting mode, second O-shaped rings respectively matched with the two dovetail slots are installed on the two dovetail blocks, and a valve rod driving the flashboard to move up and down is installed on the valve body. The flashboard is used for opening and closing the transverse runner; the sealing seat, the sealing ring and the compression spring have the functions of sealing the flashboard and preventing a medium from leaking from the flashboard, and the compression spring has the function of compensating the abrasion of the sealing surface; the transverse flow guide holes have the effects that when the transverse flow guide holes are used for lifting the flashboards, media can flow out through the transverse flow guide holes, and the bottoms of the flashboards can be supported at the sealing seats, so that the deformation degree of the flashboards under the pressure of the media is greatly reduced, and the stability of the flashboards during up-and-down movement is improved; the dovetail slot, the dovetail block and the second O-shaped ring have the effects that the sealing seat can also have a sealing effect on an elastic part area of the sealing seat when moving, the situation that the compression spring is aged and loses elasticity due to contact with a medium and cannot normally operate is avoided, impurities can be prevented from entering the sealing seat and causing the sealing seat to be incapable of normally moving, the service life of the flat gate valve is greatly prolonged, and the use cost is reduced; the valve rod has the function of driving the flashboard to move up and down so as to open and close the pipeline; the sealing ring and the rubber triangular sealing ring can play a double-sealing role, and the sealing effect on media is better.

Further perfect, it has the last intercommunication cavity with the horizontal runner intercommunication to open on the valve body, and the valve rod is located intercommunication cavity department, is fixed with the lower spacing piece that is used for spacing removal under the flashboard on the valve rod, is fixed with the last spacing piece that is used for spacing removal on the flashboard on the valve rod, goes up and installs third O type circle on the spacing piece. The lower limiting block has the function of conveniently controlling the lower movement limiting position of the flashboard; the upper communication cavity, the upper limiting block and the third O-ring have the functions that the upper movement limit position of the flashboard can be conveniently controlled, and the third O-ring can be used for further blocking the leakage of the medium from the valve rod (as shown in figure 4).

The valve body is further perfected, a lower communicating cavity communicated with the transverse flow channel is formed in the valve body, a position maintaining block is fixed at the position of the lower communicating cavity, a longitudinal channel hole is formed in the maintaining block, a group of mounting through holes are formed in the lower limiting block and are uniformly distributed along the center of the lower limiting block, self-lubricating bearings are mounted and fixed on the mounting through holes, a group of column rods respectively inserted in the lubricating bearings are fixed at the position of the upper communicating cavity, a self-lubricating metal layer made of tin bronze materials is attached to the longitudinal channel hole, and the left surface and the right surface of the flashboard are matched with the self-lubricating metal layer. The lower communicating cavity, the position maintaining block, the longitudinal channel hole, the mounting through hole and the column rod have the effects of providing transverse supporting force for the flashboard, preventing the flashboard from being bent under the action of transverse medium high pressure, and preventing the flashboard from being pressed at a sealing ring and a rubber triangular sealing ring on the stress surface side of the flashboard due to the action of transverse medium pressure, so that the abrasion of the sealing ring and the rubber triangular sealing ring on the stress surface side of the flashboard can be greatly reduced, and the service life of the flat gate valve is prolonged; the self-lubricating bearing and the self-lubricating metal layer have the effects that the frictional resistance of the flashboard in the up-and-down movement process can be greatly reduced, and the frictional resistance of the lower limiting block in the movement process on the post rod can also be greatly reduced, so that the valve rod is utilized to drive the flashboard to move up and down, and more labor is saved; the self-lubricating bearing is made of tin bronze materials.

Further perfection, the inner side and the outer side of the contour edge of the transverse diversion hole are provided with fillets. The effect of fillet here is, can make the horizontal water conservancy diversion hole on the flashboard conveniently pass through sealing washer and rubber triangular seal department, avoid the profile edge resistance of horizontal water conservancy diversion hole big to collide with sealing washer and rubber triangular seal.

The utility model discloses profitable effect is: the utility model has the advantages of ingenious structural design, it is reasonable, utilize the flashboard to be used for opening and close the effect to horizontal runner, utilize the seal receptacle, the sealing washer, compression spring can play sealed effect to the flashboard, avoid the medium to leak from the flashboard, and compression spring has the function of sealed face wearing and tearing compensation position, when utilizing horizontal water conservancy diversion hole to be used for the flashboard to go up, the medium can flow through horizontal water conservancy diversion hole department, and the flashboard bottom can also be supported by the seal receptacle, thereby greatly reduced flashboard receives medium pressure and warp, improve the flashboard go up, stability when moving down, utilize the forked tail slot, the forked tail piece, second O type circle can make the seal receptacle when moving, can play the sealed effect to the seal receptacle, avoid compression spring and medium contact and the condition emergence of the unable normal function of ageing taking place, greatly improve the life of plate gate valve, reduce use cost, the utility model discloses structural design is ingenious, it is reasonable, can improve plate gate valve's leakproofness, increase the corrosion resistance of elastic component, increase the anti bending ability of flashboard, increase plate gate valve's life, reduce use cost, be worth popularizing and applying.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is an enlarged view of a portion of the area A of FIG. 1;

FIG. 3 is a schematic structural view of the middle gate plate of the present invention in a lateral use;

fig. 4 is a flow chart of the working principle of the present invention.

Description of reference numerals: the self-lubricating valve comprises a valve body 1, a transverse flow channel 1-1, a dovetail slot 1-2, a lower communicating cavity 1-3, an upper communicating cavity 1-4, a flashboard 2, a transverse flow guide hole 2-1, a fillet 2-1a, a sealing seat 3, a sealing ring 4, a rubber triangular sealing ring 5, a compression spring 6, a second O-shaped ring 7, a valve rod 8, a lower limiting block 9, an installation through hole 9-1, an upper limiting block 10, a third O-shaped ring 11, a position retaining block 12, a longitudinal channel hole 12-1, a self-lubricating metal layer 12-1a, a post rod 13 and a self-lubricating bearing 14.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the 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 is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", 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 to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Referring to figures 1-4: the movable seal seat flat gate valve comprises a valve body 1, a transverse flow channel 1-1 is formed in the valve body 1, a flashboard 2 used for opening and closing the transverse flow channel 1-1 is installed at the position of the valve body 1, seal seats 3 inserted into the valve body 1 are arranged on the left side and the right side of the flashboard 2, first O-shaped rings 3-1 matched with the valve body 1 are installed on the two seal seats 3, seal rings 4 attached to the plane of the flashboard 2 are installed on opposite surfaces of the two seal seats 3, rubber triangular seal rings 5 attached to the plane of the flashboard 2 and located above the seal rings 4 are installed on the opposite surfaces of the two seal seats 3, compression springs 6 used for pressing the seal rings 4 and the rubber triangular seal rings 5 on the flashboard 2 are arranged on the lateral portions of the two seal seats 3, transverse flow guide holes 2-1 consistent with the cross section of the transverse flow channel 1-1 are formed in the bottom of the flashboard 2, dovetail seal holes 1-2 are formed in the positions, on the left side and the right side of the flashboard 2, dovetail seal seats 1-2, dovetail seal rings 1-2 are installed on the valve body, dovetail seal holes 3, dovetail seal rings 7 matched with the flashboard 2, and the valve rod 1-2, and the dovetail seal rings 7 are installed on the valve body, and the valve rod.

An upper communicating cavity 1-4 communicated with the transverse flow passage 1-1 is formed in the valve body 1, the valve rod 8 is located at the upper communicating cavity 1-4, a lower limiting block 9 used for limiting movement of the flashboard 2 is fixed on the valve rod 8, an upper limiting block 10 used for limiting movement of the flashboard 2 is fixed on the valve rod 8, and a third O-shaped ring 11 is installed on the upper limiting block 10.

The valve body 1 is provided with a lower communicating cavity 1-3 communicated with the transverse flow passage 1-1, a position maintaining block 12 is fixed at the position of the lower communicating cavity 1-3, a longitudinal passage hole 12-1 is formed in the position maintaining block 12, a group of mounting through holes 9-1 are formed in the lower limiting block 9 and are uniformly distributed along the center of the lower limiting block 9, a self-lubricating bearing 14 is mounted and fixed on each mounting through hole 9-1, a group of column rods 13 respectively inserted at the position of each self-lubricating bearing 14 are fixed at the position of the upper communicating cavity 1-4, a self-lubricating metal layer 12-1a made of tin bronze material is attached to the longitudinal passage hole 12-1, and the left surface and the right surface of the flashboard 2 are matched with the self-lubricating metal layer 12-1 a.

The inner side and the outer side of the outline edge of the transverse diversion hole 2-1 are both provided with a fillet 2-1a.

The utility model discloses a theory of operation: when a pipeline needs to be opened, the valve rod drives the flashboard 2 to move upwards, at this time, the flashboard 2 is kept through the transverse position of the position keeping block 12 and the post rod 13, so that the situation that the flashboard 2 is bent by being pressed under a high-pressure medium environment to cause large resistance to the upward movement or the downward movement of the flashboard 2 and the situation that the flashboard 2 is pressed on the sealing ring 4 and the rubber triangular sealing ring 5 at a stress surface by too high medium pressure can be avoided, the situation that the sealing ring 4 and the rubber triangular sealing ring 5 are abraded too fast due to too high friction force caused by the upward and downward movement of the flashboard 2 is avoided, when the flashboard 2 continuously moves upwards, the medium can flow out through the transverse flow guiding hole 2-1, the upward movement limiting position of the flashboard 2 is determined through the upper limiting block 10, and when the flashboard 2 cannot move upwards again through the upper limiting block 10, the transverse flow guiding hole 2-1 is completely located at the transverse flow channel 1-1, and the opening flow rate of the pipeline is maximum. Utilize flashboard 2 to be used for opening and close the effect to horizontal runner, utilize seal receptacle 3, sealing washer 4, compression spring 5 can play the sealing effect to flashboard 2, avoid the medium to leak from flashboard 2, and compression spring 5 has the effect of the wearing and tearing compensation position when sealing washer 4 and rubber triangular seal circle 5 wear, when utilizing horizontal water conservancy diversion hole 2-1 to be used for flashboard 2 to go up, the medium can flow out through horizontal water conservancy diversion hole 2-1 department, and flashboard 2 bottom can also be supported by seal receptacle 3, thereby greatly reduced flashboard 2 receives medium pressure and warp, improve the stability when flashboard 2 goes up, when moving down, utilize dovetail slot 1-2, forked tail piece 3-2, second O type circle 7 can make seal receptacle 3 when moving, can play the sealing effect to seal receptacle 3, avoid compression spring 6 and medium contact and the condition that the unable normal operation of ageing to take place, greatly improve the life of plate gate valve, reduce use cost, the utility model discloses structural design is ingenious, it is equitable, can improve plate gate valve's leakproofness, increase the bending resistance ability of elastic component, increase 2, the service life of flashboard, the increase of flat gate valve, the application cost of application is worth promoting.

While the invention has been shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the scope of the appended claims.

Claims

1. The utility model provides a movable seal seat plate valve, includes valve body (1), it has transverse flow way (1-1) to open in valve body (1), valve body (1) department installs flashboard (2) that are used for transverse flow way (1-1) to open and close, characterized by: the sealing device is characterized in that sealing seats (3) inserted into the valve body (1) are arranged on the left side and the right side of the flashboard (2), two sealing seats (3) are provided with first O-shaped rings (3-1) matched with the valve body (1), two sealing rings (4) attached to the plane of the flashboard (2) are arranged on opposite surfaces of the sealing seats (3), two rubber triangular sealing rings (5) attached to the plane of the flashboard (2) and positioned above the sealing rings (4) are arranged on the opposite surfaces of the sealing seats (3), compression springs (6) used for pressing the sealing rings (4) and the rubber triangular sealing rings (5) on the flashboard (2) are arranged on the lateral portions of the sealing seats (3), transverse flow guide holes (2-1) consistent with the cross section size of the transverse flow channel (1-1) are formed in the bottom of the flashboard (2), the valve body (1) is positioned on the left side and the right side of the flashboard (2), dovetail slots (1-2) are provided with dovetail slots (1-2), two dovetail slots (7) matched with the dovetail blocks (3-2) on the flashboard (2), two dovetail slots (2) are respectively fixedly arranged on the sealing seats (3), and two dovetail slots (2) are provided with the dovetail blocks (3-2), and two dovetail slots (7) matched with the valve body (2), and the two dovetail blocks (2), A valve stem (8) moving downwards.

2. The floating seal seat plate gate valve of claim 1, wherein: the improved valve is characterized in that an upper communicating cavity (1-4) communicated with a transverse flow channel (1-1) is formed in the valve body (1), the valve rod (8) is located at the upper communicating cavity (1-4), a lower limiting block (9) used for limiting and moving the flashboard (2) is fixed on the valve rod (8), an upper limiting block (10) used for limiting and moving the flashboard (2) is fixed on the valve rod (8), and a third O-shaped ring (11) is installed on the upper limiting block (10).

3. The floating seal seat plate gate valve of claim 2, wherein: the valve body (1) is provided with a lower communicating cavity (1-3) communicated with the transverse flow channel (1-1), a position maintaining block (12) is fixed at the position of the lower communicating cavity (1-3), a longitudinal channel hole (12-1) is formed in the position maintaining block (12), a group of mounting through holes (9-1) are formed in the lower limiting block (9) and are uniformly distributed along the center of the lower limiting block (9), self-lubricating bearings (14) are mounted and fixed on the mounting through holes (9-1), a group of column rods (13) which are respectively inserted into the self-lubricating bearings (14) are fixed at the position of the upper communicating cavity (1-4), a self-lubricating metal layer (12-1 a) made of tin bronze material is attached to the longitudinal channel hole (12-1), and the left surface and the right surface of the flashboard (2) are matched with the self-lubricating metal layer (12-1 a).