CN215059608U - Corrugated pipe flat gate valve - Google Patents

Abstract

The utility model discloses a bellows plate gate valve, which comprises a valve body, be equipped with the flashboard in the valve body, the left side of flashboard, the right side both sides all are equipped with the disk seat of pegging graft on the valve body, all install the sealing washer of laminating on the flashboard on the opposite face of disk seat, the upper end of valve body is fixed with the valve gap, the top of valve gap is fixed with the support, the top of support is fixed with the speed reducer, install hand wheel on the input shaft of speed reducer, be fixed with the threaded rod on the output shaft of speed reducer, the below of threaded rod is equipped with the valve rod, the bottom mounting of valve rod is in flashboard department, open on the top of valve rod has the screw thread passage hole together with the threaded rod cooperation, be equipped with the bellows sealing member of cup jointing in valve rod department between valve gap and the valve rod. The utility model discloses structural design is ingenious, reasonable, can play the effect that has prevented that the medium from locating to leak outward from the valve rod, is worth popularizing and applying.

Description

Corrugated pipe flat gate valve

Technical Field

The utility model relates to a valve, especially a dull and stereotyped flashboard of bellows.

Background

The gate valve is a shutter plate, the movement direction of the shutter plate is vertical to the fluid direction, the gate valve can only be fully opened and fully closed, and cannot be adjusted and throttled; however, in the gate valve on the market, because the valve rod is in a frequent movable state, leakage is easily caused at the valve rod, and the gate valve in the existing market usually adopts a sealing measure (such as a gate valve spool and a low-torque wedge gate valve of the chinese utility model patent CN 206655974U) for the valve rod through packing.

SUMMERY OF THE UTILITY MODEL

The utility model discloses solve above-mentioned prior art's shortcoming, provide a bellows plate valve who avoids the medium to reveal from valve rod department, satisfied long-time the use to the gate valve, the medium can not reveal from valve rod department yet and can guarantee the demand of long-time safe handling.

The utility model provides a technical scheme that its technical problem adopted: the utility model provides a bellows plate valve, which comprises a valve body, be equipped with the flashboard in the valve body, the left side of flashboard, the right side both sides all are equipped with the disk seat of pegging graft on the valve body, all install the sealing washer of laminating on the flashboard on the opposite face of disk seat, the upper end of valve body is fixed with the valve gap, the top of valve gap is fixed with the support, the top of support is fixed with the speed reducer, install hand round on the input shaft of speed reducer, be fixed with the threaded rod on the output shaft of speed reducer, the below of threaded rod is equipped with the valve rod, the bottom mounting of valve rod is in flashboard department, the top of valve rod is opened has the screw channel hole with the threaded rod cooperation together, be equipped with the bellows sealing member of cup jointing in valve rod department between valve gap and the valve rod. The valve seat and the sealing ring have the functions of sealing the flashboard and preventing a medium from leaking out of the flashboard; the speed reducer, the hand wheel, the threaded rod, the valve rod and the threaded passage hole have the functions of driving the flashboard to move up and down so as to open and close the gate valve; the corrugated pipe sealing element has the advantages that the corrugated pipe is a tubular elastic sensitive sealing element formed by connecting foldable corrugated sheets along the folding and stretching direction, can strongly seal the valve rod, has continuous bending multi-channel property of the corrugated pipe, and ensures that the sealing property of the valve rod is strong, stable and effective; the corrugated pipe sealing element is an existing product on the market, and can be selected from products of technologies of Shandong Hongyi technology Limited company, Fujian lake technology Limited company and the like.

Further perfection, the lateral parts of two valve seats all are provided with and are used for pressing the belleville spring that the sealing washer pressed on the flashboard, and open the bottom of flashboard has the passageway of passing through. The butterfly spring has the effect of giving elasticity to the valve seat, so that when the sealing ring is subjected to flashboard friction for a long time and the abrasion of the sealing surface is reduced, the position of the valve seat can be compensated through the butterfly spring, the sealing ring can be used for a long time without replacement, the replacement frequency of the sealing ring can be greatly reduced, and the cost is reduced; the through channel has the effects that when the flashboard moves upwards, a medium can flow through the through channel, the sealing rings are pressed on the inner surface and the outer surface of the flashboard in a pressure equalizing mode, the valve seat cannot be deviated due to the pressure of the butterfly spring on the valve seat, the butterfly spring presses the valve seat to be stable, the force is horizontal and straight, and the valve seat cannot be deviated.

Further perfection, the bottom of valve body is opened there is the drain, is fixed with sealed lid through the fastener on the drain, and sealed lid is installed the handle. The effect of drain here is, because flashboard medium direction atress, so do not receive the atress between flashboard and the left side disk seat and have slight space to produce, so have a small amount of mediums and flow to the blowdown chamber of drain top, when the medium filth in the blowdown chamber need be discharged, only need twist away the fastener, sealed lid pulls open through the handle, and the medium filth just can be emptied like this.

Further perfection, and hard alloy layers are respectively arranged on the end surfaces of the two valve seats on the side of the gate plate. The hard alloy layer has the functions of protecting the end surface of the valve seat side and avoiding the condition that the medium leaks from the valve seat side end due to the defect damage caused by the strong impact of the medium; the hard alloy layer is made of tungsten carbide or titanium carbide materials which are available on the market.

The utility model discloses profitable effect is: the utility model discloses structural design is ingenious, it is reasonable, utilize valve rod department to increase bellows seal spare, the possibility of medium from valve rod department leakage has been prevented, the bellows adopts multilayer structure, the life of bellows has been increased, the sealed high performance sealing washer that adopts of disk seat, the probability of the sealed face leakage of gate valve has been reduced, disc spring can make the sealing washer position of wearing and tearing can be compensated, thereby the life of increase sealing washer that can be very big, very big reduction the change frequency of sealing washer, very big cost is reduced, 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 partial enlarged view of the area B of FIG. 1;

FIG. 4 is an enlarged view of a portion of the area C of FIG. 1;

FIG. 5 is a schematic structural view of the gate plate of the present invention moving upward to open the gate valve;

fig. 6 is a schematic view from a viewing angle D of fig. 5.

Description of reference numerals: the device comprises a valve body 1, a sewage draining outlet 1-1, a flashboard 2, a passage 2-1, a valve seat 3, a sealing ring 4, a valve cover 5, a support 6, a speed reducer 7, a hand wheel 8, a threaded rod 9, a valve rod 10, a threaded passage hole 10-1, a corrugated pipe sealing element 11, a sealing cover 12 and a handle 13.

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 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.

With reference to the accompanying drawings: the corrugated pipe flat gate valve comprises a valve body 1, wherein a gate plate 2 is arranged in the valve body 1, valve seats 3 which are inserted into the valve body 1 are arranged on the left side and the right side of the gate plate 2, sealing rings 4 which are attached to the gate plate 2 are arranged on opposite surfaces of the valve seats 3, a valve cover 5 is fixed at the upper end of the valve body 1, a support 6 is fixed above the valve cover 5, a speed reducer 7 is fixed at the top end of the support 6, a hand wheel 8 is arranged on an input shaft of the speed reducer 7, a threaded rod 9 is fixed on an output shaft of the speed reducer 7, a valve rod 10 is arranged below the threaded rod 9, the bottom end of the valve rod 10 is fixed at the gate plate 2, a threaded passage hole 10-1 which is matched with the threaded rod 9 is formed in the top end of the valve rod 10, and a corrugated pipe sealing element 11 which is sleeved at the valve rod 10 is arranged between the valve cover 5 and the valve rod 10.

The side parts of the two valve seats 3 are respectively provided with a belleville spring 12 for pressing the sealing ring 4 on the flashboard 2, and the bottom of the flashboard 2 is provided with a through channel 2-1.

The bottom of the valve body 1 is provided with a sewage draining exit 1-1, a sealing cover 12 is fixed on the sewage draining exit 1-1 through a fastening piece, and a handle 13 is fixed on the sealing cover 12.

Hard alloy layers 3-1 are respectively arranged on the end surfaces of the two valve seats 3 on the side of the flashboard 2.

The utility model discloses a theory of operation: when a medium needs to pass through the gate valve, only the hand wheel 8 needs to be rotated, so that the output shaft of the speed reducer 7 is driven to rotate, and the threaded rod 9 is driven to rotate, because the valve rod 10 is fixed at the flashboard 2 and does not rotate, the threaded rod 9 rotates, the valve rod 10 can move upwards through the threaded passage hole 10-1, the flashboard 2 is driven to move upwards together when the valve rod 10 moves upwards, so that the medium can flow through the passage 2-1, and the gate valve is opened, the corrugated pipe sealing part 11 is additionally arranged at the valve rod 10, the possibility of leakage of the medium from the valve rod 10 can be prevented, the corrugated pipe adopts a multilayer structure, the service life of the corrugated pipe is prolonged, the valve seat 3 adopts the high-performance sealing ring 4 for sealing, the probability of leakage of the sealing surface of the gate valve is reduced, the butterfly spring 12 can compensate the position of the worn sealing ring, and the service life of the sealing ring can be greatly prolonged, greatly reduces the replacement frequency of the sealing ring, greatly reduces the cost and is worth popularizing and applying.

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 (4)

1. The utility model provides a bellows plate valve, includes valve body (1), characterized by: the improved valve is characterized in that a flashboard (2) is arranged in the valve body (1), valve seats (3) inserted on the valve body (1) in an inserting mode are arranged on the left side and the right side of the flashboard (2), sealing rings (4) attached to the flashboard (2) are installed on opposite faces of the valve seats (3), a valve cover (5) is fixed to the upper end of the valve body (1), a support (6) is fixed to the upper portion of the valve cover (5), a speed reducer (7) is fixed to the top end of the support (6), a hand wheel (8) is installed on an input shaft of the speed reducer (7), a threaded rod (9) is fixed to an output shaft of the speed reducer (7), a valve rod (10) is arranged below the threaded rod (9), the bottom end of the valve rod (10) is fixed to the flashboard (2), a threaded passage hole (10-1) matched with the threaded rod (9) is formed in the top end of the valve rod (10), and a bellows sealing piece (11) sleeved at the valve rod (10) is arranged between the valve cover (5) and the valve rod (10).

2. The bellows plate gate valve of claim 1, wherein: and the side parts of the two valve seats (3) are provided with belleville springs (12) for pressing the dynamic sealing rings (4) on the flashboards (2), and the bottom parts of the flashboards (2) are provided with through channels (2-1).

3. The bellows plate gate valve of claim 1, wherein: the bottom of the valve body (1) is provided with a sewage draining outlet (1-1), a sealing cover (12) is fixed on the sewage draining outlet (1-1) through a fastening piece, and a handle (13) is fixed on the sealing cover (12).

4. The bellows plate gate valve of claim 1, wherein: hard alloy layers (3-1) are respectively arranged on the end surfaces of the two valve seats (3) on the side of the flashboard (2).

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