CN219841069U - Double-acting emptying cut-off valve structure for fiber medium - Google Patents

Abstract

The utility model discloses a double-acting emptying shut-off valve structure for fiber media, which comprises a valve body, a valve rod, a wedge-shaped block coaxially fixed with the valve rod, a pair of hard sealing valve seats welded and fixed in the valve body, and a flat gate plate and a knife-shaped gate plate respectively arranged between the two hard sealing valve seats and the wedge-shaped block, wherein one side of the wedge-shaped block, which faces the flat gate plate, is a wedge-shaped surface, and one side of the wedge-shaped block, which faces the knife-shaped gate plate, is a vertical surface, a spring contraction device is arranged between the flat gate plate and the knife-shaped gate plate, a gate plate positioning screw is fixed below the knife-shaped gate plate by the valve body, a steam purging interface is arranged at the upper cover position of the valve body, and a sewage draining interface is arranged at the bottom of the valve body. The utility model adopts a structure of combining the flat flashboard and the knife-type flashboard and utilizes the steam blowing interface to blow, thus avoiding impurities from being remained on the sealing surface of the flat flashboard, simultaneously ensuring the smoothness of valve opening and closing because no impurities exist in the valve when the valve is opened and closed.

Description

Double-acting emptying cut-off valve structure for fiber medium

Technical Field

The utility model relates to a double-acting emptying shut-off valve structure for a fiber medium.

Background

The parallel double-gate valve is suitable for industries such as chemical industry, petroleum, natural gas, power plant, coal mine, building, steel, light industry, sewage treatment and the like, and can play an excellent role as an opening and closing device in a pipeline system because hard particles, fibrous dirt and other objects are often contained in a medium.

Conventional parallel double gate valves suffer from the following disadvantages: 1. impurities in severe working conditions such as fiber, slurry, powder and granular materials are easy to stay on a valve sealing surface, so that the valve sealing is leaked; 2. without a steam purge interface, media build up in the valve causes valve switch blocking.

Disclosure of Invention

Aiming at the problems, the utility model provides a double-acting emptying shut-off valve structure for a fiber medium, which effectively solves the problems pointed out in the background technology.

The technical scheme adopted by the utility model is as follows:

the utility model provides a fiber media is with two effect evacuation trip valve structures, includes valve body, valve rod, with the coaxial fixed wedge of valve rod, welded fastening in the valve body a pair of hard seal disk seat to and set up respectively flat flashboard and the knife-type flashboard between two hard seal disk seats and wedge, wedge orientation one side of flat flashboard is the wedge face, orientation one side of knife-type flashboard is the vertical face, flat flashboard and knife-type flashboard between be equipped with spring constriction device, the valve body is fixed with flashboard set screw in the below of knife-type flashboard, the upper cover position of valve body is equipped with steam and sweeps the interface, the bottom of valve body is equipped with the blowdown interface.

Preferably, the spring contraction device comprises baffle sleeves respectively fixed on the inner sides of the flat flashboard and the knife flashboard, and a spring guide sleeve arranged between the two baffle sleeves, and springs are arranged in the spring guide sleeve in a matching manner.

Preferably, valve plate limiting blocks matched with the bottom of the valve rod are fixed on the inner sides of the flat flashboard and the knife flashboard.

When the valve plate limiting block is used for the circular flashboard switch, the circular flashboard is prevented from rotating.

Preferably, the baffle sleeve is fixed by screws or welding.

The utility model adopts a structure of combining the flat flashboard and the knife flashboard, realizes primary sealing of an upstream pipeline through the knife flashboard when the valve is closed, sweeps through steam by utilizing the steam sweeping interface, sweeps impurities in the valve cleanly, then discharges the impurities through the sewage draining interface, and ensures the sealing effect through the flat flashboard, so that the impurities can be prevented from being remained on the sealing surface of the flat flashboard, and meanwhile, no impurities exist in the valve when the valve is opened and closed, thereby ensuring the smoothness of the opening and closing of the valve.

According to the utility model, the two groups of baffle sleeves are fixed on the flashboard through bolts or welding, so that the compression force of the springs is converted into the attaching force of the two flashboards, and the guide sleeve is arranged in the springs, so that the smoothness of the springs is ensured.

The utility model can prevent the medium in the pipeline, especially some tiny particles, from adhering to the surfaces of the wedge blocks and the inclined planes of the two gate plates, avoid corrosion from affecting the switching torque and avoid the wedge blocks from being blocked with the inclined planes of the gate plates; when the valve is opened, the valve rod enables the flashboard to loosen and pretighten through the wedge-shaped block, and the spring contraction device enables the right plane flashboard to be directly separated from the valve seat.

Drawings

FIG. 1 is a schematic cross-sectional view of the present utility model;

fig. 2 is a side view structural diagram of fig. 1.

Detailed Description

It should be noted that the following detailed description is illustrative and is intended to provide further explanation of the utility model. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present utility model. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.

Furthermore, in the description of the present utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "clockwise," "counterclockwise," etc. indicate or are based on the orientation or positional relationship shown in the drawings, merely for convenience of description and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is two or more, unless otherwise clearly defined.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

The utility model will now be described in further detail with reference to the accompanying drawings by means of specific examples.

As shown in fig. 1-2, a double-acting emptying shut-off valve structure for fiber media comprises a valve body 1, a valve rod 2, a wedge block 3 coaxially fixed with the valve rod 2, a pair of hard sealing valve seats 4 welded and fixed in the valve body 1, and a flat gate 5 and a knife gate 6 respectively arranged between the two hard sealing valve seats 4 and the wedge block 3, wherein one side of the wedge block 3, which faces the flat gate 5, is a wedge surface, one side, which faces the knife gate 6, is a vertical surface, a spring contraction device is arranged between the flat gate 5 and the knife gate 6, a gate positioning screw 7 is fixed below the knife gate 6 by the valve body 1, a steam purging interface 8 is arranged at the upper cover position of the valve body 1, and a pollution discharging interface 9 is arranged at the bottom of the valve body 1.

The spring contraction device comprises baffle sleeves 10 respectively fixed on the inner sides of the flat flashboard 5 and the knife flashboard 6, and spring guide sleeves 11 arranged between the two baffle sleeves 10, wherein springs 12 are arranged in the spring guide sleeves 11 in a matching manner.

The inner sides of the flat flashboard 5 and the knife flashboard 6 are fixed with a valve plate limiting block 13 matched with the bottom of the valve rod 2.

The baffle plate cover 10 is fixed by bolts or welding.

The working principle of the utility model is as follows:

when the valve is closed: the valve rod 2 and the wedge block 3 drive the flat flashboard 5 and the knife flashboard 6 to move downwards simultaneously, when the outer side surface of the knife flashboard 6 and the corresponding hard sealing valve seat 4 form primary sealing, the bottom of the knife flashboard 6 is contacted with the flashboard positioning screw 7, high-pressure steam is introduced into the valve body 1 through the steam purging interface 8 to purge, meanwhile, the blowdown interface 9 is opened to carry out blowdown, then the valve rod 2 and the wedge block 3 are continuously operated to move downwards, at the moment, the wedge block 3 pushes the flat flashboard 5 to move outwards, and the spring 12 is stretched until the flat flashboard 5 is attached to the corresponding hard sealing valve seat 4, so that the closing of the valve is completed.

When the valve is opened: the valve rod 2 and the wedge block 3 move upwards simultaneously, and in the upward movement process, firstly the flat flashboard 5 approaches to the knife flashboard 6 under the action of shrinkage force by the spring 12, and then the flat flashboard 5 and the knife flashboard 6 move upwards together until the valve is completely opened, so that the valve is opened.

Finally, it should be noted that the above list is only specific embodiments of the present utility model. Obviously, the utility model is not limited to the above embodiments, but many variations are possible. All modifications directly derived or suggested to one skilled in the art from the present disclosure should be considered as being within the scope of the present utility model.

Claims (4)

1. The utility model provides a fiber media is with two effect evacuation trip valve structures, its characterized in that includes valve body (1), valve rod (2), wedge (3) coaxial fixed with valve rod (2), welded fastening in valve body (1) a pair of hard seal disk seat (4) to and set up flat flashboard (5) and sword type flashboard (6) between two hard seal disk seat (4) and wedge (3) respectively, wedge (3) are wedge face towards one side of flat flashboard (5), are vertical face towards one side of sword type flashboard (6), flat flashboard (5) and sword type flashboard (6) between be equipped with spring constriction device, valve body (1) are fixed with flashboard set screw (7) in the below of sword type flashboard (6), the upper cover position of valve body (1) is equipped with steam and sweeps interface (8), the bottom of valve body (1) is equipped with blowdown interface (9).

2. A double acting blow down shut off valve structure for fibrous media according to claim 1, characterized in that said spring retraction means comprises a baffle housing (10) secured inside a flat shutter (5) and a knife shutter (6), respectively, and a spring guide housing (11) disposed between two of said baffle housings (10), said spring guide housing (11) being internally fitted with a spring (12).

3. A double-acting emptying shut-off valve structure for fibrous media according to claim 1, characterized in that the inner sides of the flat gate plate (5) and the knife gate plate (6) are fixed with a valve plate limiting block (13) matched with the bottom of the valve rod (2).

4. A double acting blow down shut off valve structure for fibrous media according to claim 2 wherein said baffle sleeve (10) is secured by screws or welding.