CN211082892U

CN211082892U - Pressure equalizing valve sealing device capable of effectively increasing sealing contact area

Info

Publication number: CN211082892U
Application number: CN201921222598.3U
Authority: CN
Inventors: 任浩洁
Original assignee: Guangxi Xindun Civil Air Defense Engineering Group Co Ltd
Current assignee: Guangxi Xindun Civil Air Defense Engineering Group Co Ltd
Priority date: 2019-07-31
Filing date: 2019-07-31
Publication date: 2020-07-24
Anticipated expiration: 2029-07-31

Abstract

The utility model discloses a can effectively increase area of sealing contact's equalizing valve door sealing device relates to valve technical field, which comprises a valve body, the upside of valve body is equipped with the gas outlet, the first flange of upper end fixedly connected with of gas outlet, one side upper portion of valve body is equipped with the viewing aperture, one side middle part of valve body is equipped with the air inlet, the one end fixedly connected with second flange of air inlet, one side that the valve rod is close to the air inlet is through little seal valve of nut fixedly connected with and big seal valve. The utility model discloses a set up two seal valves of establishing ties, the area of contact of increase seal valve and disk seat, two seal valves all adopt the conical surface design, and the seal valve is neutral good, can guarantee that the seal valve still has higher leakproofness after using a period, has increased the life of valve body, and through setting up the viewing aperture, it is more convenient that installation use or maintenance are changed, and the maintenance time shortens.

Description

Pressure equalizing valve sealing device capable of effectively increasing sealing contact area

Technical Field

The utility model relates to the technical field of valves, specifically be a valve sealing device is pressed to equalizing that can effectively increase sealed area of contact.

Background

The pressure equalizing valve is used for maintaining the pressure of the blast furnace charging bucket, the pressure of the charging bucket is maintained at a fixed value by controlling the air inlet valve and the air outlet valve, and the discharge hole of the charging bucket can be opened only if the pressure of the raw material is stably kept to be close to the pressure in the blast furnace, so that the raw material enters the blast furnace under the pressure of a certain value, and the pressure loss of the blast furnace is reduced; the existing pressure equalizing valve has small contact area of a sealing ring, is mostly designed by a single sealing ring, has the service life of 2-3 years generally, and mostly adopts a one-way sealing pressure equalizing valve; the valve of present equalizing valve appears leaking gas easily after long-term use, and closed not tight, the phenomenon of unable holding pressure, valve sealing washer and disk seat area of contact is little, and valve sealing washer is short-lived, and the gas of easy loss material jar intussuseption is filled under high-pressure state, and when changing the valve sealing washer, the structure of many equalizing valves is comparatively complicated, and the inspection valve sealing washer is wasted time and energy, and it is inconvenient to use.

Therefore, it is necessary to provide a sealing device for a pressure equalizing valve, which can effectively increase the sealing contact area to solve the above problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a can effectively increase area of sealed contact's equalizing valve door sealing device to solve the little and short-lived problem of current valve seal area of contact who proposes among the above-mentioned background art.

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes:

a pressure equalizing valve sealing device capable of effectively increasing sealing contact area comprises a valve body, wherein a gas outlet is formed in the upper side of the valve body, a first flange is fixedly connected to the upper end of the gas outlet, an observation port is formed in the upper portion of one side of the valve body, an observation port cover plate is bolted to one end of the observation port, a gas inlet is formed in the middle of one side of the valve body, a second flange is fixedly connected to one end of the gas inlet, a valve seat is bolted to the other end of the gas inlet, a sealing chamber is formed in the other side of the valve body, a sealing chamber cover plate is bolted to one side of the sealing chamber, a valve rod is slidably connected to the middle of the sealing chamber cover plate, a small sealing valve and a large sealing valve are fixedly connected to one side, close to the gas inlet, through nuts, an ash cleaning, the other side of the valve body is provided with a motor, a shaft of the motor is fixedly provided with a gear, and the lower part of the gear is meshed and connected with a rack.

Optionally, a front sealing ring is arranged on one side, close to the sealing chamber, of the valve body, and a rear sealing ring is arranged in the middle of the cover plate of the sealing chamber.

Optionally, the small sealing valve and the large sealing valve are both tightly fitted with the notch of the valve seat, and the conical generatrices of the small sealing valve and the large sealing valve are both 1mm higher than the conical generatrices of the valve seat.

Optionally, the small sealing valve and the large sealing valve are both made of composite elastic bodies, and both the small sealing valve and the large sealing valve are combined bodies of round tables and cylinders.

Optionally, one side of the large sealing valve is fixedly connected with a shaft shoulder of the valve rod, and the other side of the large sealing valve is fixedly connected with the valve rod through a nut.

Optionally, the shapes of the observation port cover plate, the ash removal port cover plate and the sealing chamber cover plate are all the same, and the observation port cover plate, the ash removal port cover plate and the sealing chamber cover plate are all fixedly connected with the valve body through gaskets.

Optionally, one end of the motor far away from the rack is fixedly connected with one end of the valve rod, and the bottom of the valve body is funnel-shaped.

The utility model discloses a technological effect and advantage:

1. the utility model discloses a set up two seal valves of series connection, the area of contact of increase seal valve and disk seat, the gas tightness of reinforcing material jar effectively reduces the inside gaseous leakage of valve body, and in addition, two seal valves all adopt the conical surface design, and the seal valve is to neutrality good, and the precision is higher, can guarantee that the seal valve still has higher leakproofness after using a period.

2. The utility model discloses a set up twice seal valve, improved compressive strength, increased the life of valve body, even the little seal valve inefficacy does not influence the result of use of whole equalizing valve yet, has also reduced the loss of spare parts simultaneously, in addition, through setting up seal chamber and sealing washer, gaseous leakage when reducing the valve rod and sliding.

3. The utility model discloses a set up the viewing aperture, it is more convenient to make the maintenance inspection seal valve, designs into the bottom of valve body and leaks hopper-shaped, and the inside dust of the valve body of being convenient for is collected, and in addition, each outside of passageway of valve body all sets up the flange, is favorable to the specialization of valve body, and it is more convenient to install and use or maintain and change, and the maintenance time shortens, improve equipment's operating efficiency, reduces equipment running cost.

Drawings

FIG. 1 is a schematic view of the structure of the present invention;

FIG. 2 is a schematic view of the valve seat structure of the present invention;

fig. 3 is a sectional view of the sealing valve structure of the present invention.

In the figure: 1. a valve body; 2. an air outlet; 3. a first flange; 4. a viewing port; 5. a viewing port cover plate; 6. A second flange; 7. an air inlet; 8. a valve seat; 9. a nut; 10. a small seal valve; 11. a large seal valve; 12. a cover plate of the ash removal port; 13. cleaning the ash hole; 14. a front seal ring; 15. a valve stem; 16. a sealed chamber; 17. A rear seal ring; 18. a sealed chamber cover plate; 19. a rack; 20. a gear; 21. an electric motor.

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.

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", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and 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.

In the present invention, unless otherwise expressly stated or limited, the terms "disposed," "mounted," "connected," and "fixed" are to be construed broadly, e.g., as meaning either a fixed connection or a removable connection; may be a mechanical connection; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

The utility model provides a pressure equalizing valve sealing device which can effectively increase the sealing contact area as shown in figures 1-3, comprising a valve body 1, wherein the upper side of the valve body 1 is provided with a gas outlet 2, the upper end of the gas outlet 2 is fixedly connected with a first flange 3, the upper part of one side of the valve body 1 is provided with a viewing port 4, one end of the viewing port 4 is bolted with a viewing port cover plate 5, the pressure equalizing valve is more convenient to maintain and check by arranging the viewing port 4, the middle part of one side of the valve body 1 is provided with an air inlet 7, one end of the air inlet 7 is fixedly connected with a second flange 6, the outer parts of the air inlet 7 and the gas outlet 2 of the valve body are both provided with flanges, thereby being beneficial to specialization of the pressure equalizing valve, the installation, use or maintenance and replacement are more convenient, the maintenance time is shortened, the operation efficiency of the equipment is improved, a sealing chamber cover 18 is bolted on one side of a sealing chamber 16, a valve rod 15 is slidably connected in the middle of the sealing chamber cover 18, a front sealing ring 14 is arranged on one side of the valve body 1 close to the sealing chamber 16, a rear sealing ring 17 is arranged in the middle of the sealing chamber cover 18, a small sealing valve 10 and a large sealing valve 11 are fixedly connected on one side of the valve rod 15 close to the air inlet 7 through a nut 9, the small sealing valve 10 and the large sealing valve 11 are tightly matched with a notch of the valve seat 8, conical generatrices of the small sealing valve 10 and the large sealing valve 11 are 1mm higher than that of the valve seat 8, the small sealing valve 10 and the large sealing valve 11 are both made of composite material elastomers, the small sealing valve 10 and the large sealing valve 11 are both a combination of a circular truncated cone and a cylinder, one side of the large sealing valve 11 is fixedly connected with a shaft shoulder of the valve rod, the contact area between the small sealing valve 10 and the valve seat 8 and the contact area between the large sealing valve 11 and the valve seat 11 are increased, the gas leakage inside the valve body 1 is effectively reduced, in addition, the small sealing valve 10 and the large sealing valve 11 both adopt conical surface design, the centering performance is good, the precision is higher, the small sealing valve 10 and the large sealing valve 11 can still have higher sealing performance after being used for a period of time, the compressive strength is improved, the service life of the valve body 1 is prolonged, the use effect of the whole equalizing valve is not influenced even if the small sealing valve 10 fails, the loss of spare parts is reduced, in addition, the gas leakage when the valve rod 15 slides is reduced by arranging the sealing chamber 16, the bottom of the valve body 1 is provided with the dust cleaning port 13, the bottom of the dust cleaning port 13 is connected with the dust cleaning port cover plate 12 through a bolt, the valve bodies 1 on two sides of the dust cleaning port 13 are funnel, a gear 20 is fixedly mounted on a shaft of a motor 21, a rack 19 is meshed with the lower portion of the gear 20, one end, far away from the rack 19, of the motor 21 is fixedly connected with one end of a valve rod 15, shapes of an observation port cover plate 5, an ash removal port cover plate 12 and a sealing chamber cover plate 18 are all consistent, and the observation port cover plate 5, the ash removal port cover plate 12 and the sealing chamber cover plate 18 are all fixedly connected with a valve body 1 through gaskets.

The electrical components presented in the document are all electrically connected with an external master controller and 220V mains, and the master controller can be a conventional known device controlled by a computer or the like.

The utility model discloses a theory of operation: connecting the first flange 3 at the side of the air outlet 2 and the second flange 6 at the side of the air inlet 7 to the external equipment pipeline, when pressure needs to be maintained, starting a motor 21, wherein the motor 21 drives a gear 20 to rotate anticlockwise, the gear 20 is meshed with a rack 19, the rack 19 moves linearly, pushing a valve rod 15 to move towards the direction of a valve seat 8 until a small sealing valve 10 and a large sealing valve 11 are both tightly matched with the notch of the valve seat 8, stopping the motor 21, closing the air inlet 7, keeping the air pressure inside the valve body 1 at a constant value, when the air pressure inside the valve body 1 needs to be increased, starting the motor 21, driving the gear 20 to rotate clockwise by the motor 21, the gear 20 is meshed with the rack 19, the rack 19 moves linearly, the valve rod 15 moves towards the direction far away from the valve seat 8 until the small sealing valve 10 and the large sealing valve 11 are both separated from the notch of, the operation of the motor 21 is stopped, the air inlet 7 is opened, air begins to be filled into the valve body 1, the pressure of the charging bucket is gradually increased, when dust in the valve body needs to be cleaned, the bolt on the dust cleaning port cover plate 12 is unscrewed, the dust cleaning port cover plate 12 is removed, the dust cleaning port 13 is opened, accumulated dust in the dust cleaning port 13 automatically falls down, the dust cleaning port cover plate 12 is mounted after the cleaning is finished, the pressure equalizing valve needs to be maintained and checked, when the small sealing valve 10 and the large sealing valve 11 are both separated from the notch of the valve seat 8, the bolt on the observation port cover plate 5 is unscrewed, the observation port cover plate 5 is removed, the observation port 4 is opened, the abrasion conditions of the small sealing valve 10 and the large sealing valve 11 are observed by using the flashlight, and after the maintenance is finished, the observation port cover plate 5 is mounted.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.

Claims

1. The utility model provides a can effectively increase sealing contact area's equalizing valve sealing device, includes valve body (1), its characterized in that: the upper side of the valve body (1) is provided with a gas outlet (2), the upper end of the gas outlet (2) is fixedly connected with a first flange (3), the upper part of one side of the valve body (1) is provided with an observation port (4), one end of the observation port (4) is in bolted connection with an observation port cover plate (5), the middle part of one side of the valve body (1) is provided with a gas inlet (7), one end of the gas inlet (7) is fixedly connected with a second flange (6), the other end of the gas inlet (7) is in bolted connection with a valve seat (8), the other side of the valve body (1) is provided with a sealing chamber (16), one side of the sealing chamber (16) is in bolted connection with a sealing chamber cover plate (18), the middle part of the sealing chamber cover plate (18) is in sliding connection with a valve rod (15), one side of the valve rod (15), which is close to, the bottom of valve body (1) is equipped with deashing mouth (13), the bottom bolted connection of deashing mouth (13) has deashing mouth apron (12), the opposite side of valve body (1) is equipped with motor (21), the epaxial fixed mounting of motor (21) has gear (20), the lower part meshing of gear (20) is connected with rack (19).

2. The equalizing valve sealing device of claim 1, wherein the sealing contact area is effectively increased by:

one side of the valve body (1) close to the sealing chamber (16) is provided with a front sealing ring (14), and the middle part of the sealing chamber cover plate (18) is provided with a rear sealing ring (17).

3. The equalizing valve sealing device of claim 1, wherein the sealing contact area is effectively increased by:

the small sealing valve (10) and the large sealing valve (11) are tightly matched with the notch of the valve seat (8), and conical surface generatrices of the small sealing valve (10) and the large sealing valve (11) are 1mm higher than the conical surface generatrices of the valve seat (8).

4. The equalizing valve sealing device of claim 1, wherein the sealing contact area is effectively increased by:

the small sealing valve (10) and the large sealing valve (11) are both made of composite elastic bodies, and the small sealing valve (10) and the large sealing valve (11) are both combined bodies of round tables and cylinders.

5. The equalizing valve sealing device of claim 1, wherein the sealing contact area is effectively increased by:

one side of the large sealing valve (11) is fixedly connected with a shaft shoulder of the valve rod (15), and the other side of the large sealing valve (11) is fixedly connected with the valve rod (15) through a nut (9).

6. The equalizing valve sealing device of claim 1, wherein the sealing contact area is effectively increased by:

the observation port cover plate (5), the ash removing port cover plate (12) and the sealing chamber cover plate (18) are all consistent in shape, and the observation port cover plate (5), the ash removing port cover plate (12) and the sealing chamber cover plate (18) are all fixedly connected with the valve body (1) through gaskets.

7. The equalizing valve sealing device of claim 1, wherein the sealing contact area is effectively increased by:

one end of the motor (21) far away from the rack (19) is fixedly connected with one end of the valve rod (15), and the bottom of the valve body (1) is funnel-shaped.