CN217030009U

CN217030009U - Novel corrosion-resistant fuel gas cutting-off gate valve

Info

Publication number: CN217030009U
Application number: CN202123004969.0U
Authority: CN
Inventors: 尚崇飞; 张素萍
Original assignee: HENAN YIHE VALVE CO Ltd
Current assignee: HENAN YIHE VALVE CO Ltd
Priority date: 2021-12-02
Filing date: 2021-12-02
Publication date: 2022-07-22
Anticipated expiration: 2031-12-02

Abstract

The utility model relates to the field of pipeline gas cutting devices for coal gas, metallurgy, chemical industry and the like, in particular to a novel corrosion-resistant gas cutting gate valve which comprises a valve body, a valve shaft and a valve plate, wherein the valve shaft and the valve plate are arranged in the valve body, the valve plate is positioned between pipelines on two sides of the valve body, the novel corrosion-resistant gas cutting gate valve further comprises an electric actuator, a pre-tightening lever and an ejector pin, the electric actuator is arranged on the valve body, the electric actuator is in transmission connection with the valve shaft, the valve plate comprises a left valve plate and a right valve plate, the left valve plate and the right valve plate are arranged on two sides of the valve shaft, opposite sides of the left valve plate and the right valve plate are hinged with the pre-tightening lever, the ejector pin is arranged at the end part of the valve body, the ejector pin is positioned between the two pre-tightening levers, sealing strips are embedded in the pipelines, and face the valve plates. The utility model improves the sealing effect and effectively prolongs the service life of the valve.

Description

Novel corrosion-resistant fuel gas cutting-off gate valve

Technical Field

The utility model relates to the field of pipeline gas cutoff devices for coal gas, metallurgy, chemical engineering and the like, in particular to a novel corrosion-resistant gas cutoff gate valve.

Background

The gate valve is a shutter, the movement direction of the shutter is vertical to the fluid direction, and the gate valve can only be fully opened and fully closed and cannot be adjusted and throttled. Gate valves are sealed by the contact of the valve seat and the gate plate, and the sealing surface is usually bead-welded with a metal material to increase wear resistance. The gate valve for cutting off pipeline gas in coal gas, metallurgy, chemical industry and the like has the phenomena of valve shaft bending, damage of a screw transmission pair and the like due to overlarge driving force after long-term use, and the corrosion resistance and the sealing performance of the valve are reduced due to damage, so that the service life of the gate valve is short.

Disclosure of Invention

The utility model provides a novel corrosion-resistant fuel gas cutoff gate valve for solving the problem of low sealing performance of the gate valve, so that the sealing effect is improved, and the service life of the gate valve is effectively prolonged.

In order to realize the purpose, the technical scheme of the utility model is as follows:

the utility model provides a novel gate valve is cut off to corrosion-resistant gas, includes the valve body, sets up valve shaft and valve plate in the valve body, the valve plate is located between the pipeline of valve body both sides, still includes electric actuator, pretension lever and thimble, electric actuator sets up on the valve body, and the electric actuator transmission is connected the valve shaft, the valve plate includes left valve plate and right valve plate, left valve plate and right valve plate set up in the both sides of valve shaft, and the opposite side of left valve plate and right valve plate all articulates the setting the pretension lever, the thimble sets up the tip at the valve body, and the thimble is located between two pretension levers, inlay on the pipeline and be provided with the sealing strip, the sealing strip is towards the valve plate.

In a further preferred scheme, the pre-tightening lever is wedge-shaped, the pre-tightening lever is hinged with the valve plate through a lever pin shaft, the lever pin shaft is located at the large-head end of the pre-tightening lever, an inclined plane is arranged at the small-head end of the pre-tightening lever, and the upper end of the ejector pin is wedge-shaped.

In a further preferable scheme, a return spring is arranged between the left valve plate and the right valve plate.

In a further preferred scheme, a valve plate connecting sleeve is sleeved at the end part of the valve shaft and fixedly connected with the valve shaft through a shaft plate connecting pin, lifting seats are arranged on two sides of the valve plate connecting sleeve, the outer sides of the two lifting seats are fixed through a hoop, and the two lifting seats are respectively connected with the left valve plate and the right valve plate.

In a further preferred scheme, a support is arranged on the valve body, the electric actuator is arranged on the support, a nut seat is rotatably arranged on the support, the nut seat is sleeved on the valve shaft, and the nut seat is in transmission connection with the valve shaft.

In a further preferred scheme, the two ends of the outer side of the left valve plate and the two ends of the outer side of the right valve plate are both provided with guide wheels, and the guide wheels are in contact with the side wall of the valve body.

In a further preferred scheme, a water supply port and an overflow diffusing port are respectively arranged on two sides of the upper end of the valve body.

In a further preferred scheme, a sewage draining outlet is arranged at the lower end of the valve body.

Through the technical scheme, the utility model has the beneficial effects that:

the opposite sides of the left valve plate and the right valve plate are respectively hinged with a pre-tightening lever, the pre-tightening levers are in contact with the ejector pins, the lever pin shafts are used as fulcrums, a long force arm is formed between the lever pin shafts and the ejector pins, a short force arm is formed between the lever pin shafts and the left valve plate and between the lever pin shafts and the right valve plate, sealing force for sealing the valve plates is formed, sealing strips are embedded on the pipeline and are in contact with the valve plates, a soft-hard composite sealing mode is formed, the sealing effect is improved, and the service life of the valve is effectively prolonged.

Drawings

FIG. 1 is a schematic structural diagram of a novel corrosion-resistant gas cutoff gate valve of the present invention;

FIG. 2 is one of the schematic cross-sectional structural diagrams of a novel corrosion-resistant gas shut-off gate valve of the present invention;

FIG. 3 is a schematic view of the construction of the electric actuator, the nut block and the valve shaft of the present invention;

FIG. 4 is a second schematic cross-sectional view of the novel corrosion-resistant gas shut-off gate valve of the present invention;

FIG. 5 is an enlarged view of a portion of FIG. 4 at A;

fig. 6 is a third schematic sectional view of a novel corrosion-resistant gas cutoff gate valve.

The reference numbers in the drawings are as follows: 1 is a water supply mouth; 2 is an overflow discharge port; 3 is an upper valve body; 4 is a lower valve body; 5 is a guide wheel; 6 is a sewage draining outlet; 8 is a bracket; 9 is an electric actuator; 10 is a valve shaft; 11 is a screw seat; 13 is a shaft plate connecting pin; 14 is a left valve plate; 15 is a sealing strip; 16 is a return spring; 17 is a lever pin shaft; 18 is a right valve plate; 19 is a pre-tightening lever; 20 is a thimble; 21 is a valve plate connecting sleeve; 22 is a lifting seat; and 23 is a hoop.

Detailed Description

The utility model is further described with reference to the following figures and detailed description:

in the description of the present invention, it is to be understood that the terms "left", "right", "upper", "lower", "lateral", "vertical", etc. indicate orientations or positional relationships based on those shown in fig. 1 only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

As shown in fig. 1 to 6, the embodiment provides a novel corrosion-resistant gas shutoff gate valve, which includes a valve body, a valve shaft 10 and a valve plate arranged in the valve body, the valve body includes an upper valve body 3 and a lower valve body 4, the upper valve body and the lower valve body are fixedly connected, the valve plate is arranged between pipelines at two sides of the valve body, and further includes an electric actuator 9, a pre-tightening lever 19 and an ejector pin 20, the electric actuator 9 is arranged on the upper valve body 3, the electric actuator 9 is connected with the valve shaft 10 in a transmission manner, the electric actuator 9 drives the valve shaft 10 to move up and down, the valve plate is arranged on the lower valve body 4, the valve plate includes a left valve plate 14 and a right valve plate 18, the left valve plate 14 and the right valve plate 18 are arranged at two sides of the valve shaft 10, opposite sides of the left valve plate 14 and the right valve plate 18 are both hinged with the pre-tightening lever 19, the ejector pin 20 is arranged at an end of the lower valve body 4, the ejector pin 20 is arranged between the two pre-tightening levers 19, after the valve shaft 10 drives the valve plate to descend, the pre-tightening levers 19 on the left valve plate and the right valve plate are in contact with the ejector pins 20, sealing pre-tightening force is provided for the valve plate according to the lever principle, and the sealing strength of the valve plate in a closed state is improved. Inlay on the pipeline of lower valve body 4 and be provided with sealing strip 15, sealing strip 15 is towards the valve plate, and the sealing strip is corrosion-resistant wear-resisting sealing strip, can reach soft or hard composite seal effect, promotes the leakproofness.

The pre-tightening lever 19 is wedge-shaped, the upper end of the pre-tightening lever 19 is large, the lower end of the pre-tightening lever 19 is small, the opposite sides of the large head ends of the two pre-tightening levers 19 are square, the small head end of the pre-tightening lever 19 is provided with an inclined plane, the pre-tightening lever 19 is hinged with the valve plate through a lever pin shaft 17, the lever pin shaft 17 is located at the large head end of the pre-tightening lever 19, and the upper end of the ejector pin 20 is wedge-shaped. Under the contact state of the pre-tightening lever 19 and the ejector pin 20, the lever pin shaft 19 is taken as a fulcrum, a long force arm is formed between the lever pin shaft 19 and the ejector pin 20, a short force arm is formed between the lever pin shaft 19 and the left valve plate 14, and between the lever pin shaft 19 and the right valve plate 18, extrusion force exists between the short force arms of the two pre-tightening levers due to the contact of the ejector pin 20 on the pre-tightening lever 19, and the extrusion force is complementary with the contact extrusion force of the ejector pin 20 on the pre-tightening lever 19 to form pre-tightening on the valve plate, and meanwhile, the valve plate is used as an opening and closing plate of the gate valve to form the sealing performance of the valve plate on the closing of the gate valve.

In order to further optimize the product structure, a return spring 16 is arranged between the left valve plate 14 and the right valve plate 18, and the return spring 16 is positioned between the pre-tightening lever 19 and the valve shaft 10. The restoring spring 16 makes the left valve plate 14 and the right valve plate 18 have opposite force, so that the rigidity of the left valve plate 14 and the right valve plate 18 during lifting movement is improved.

Foretell, valve shaft 10 lower extreme tip cover is equipped with valve plate adapter sleeve 21, and valve plate adapter sleeve 21 passes through axial lamella connecting pin 13 and valve shaft 10 fixed connection, and axial lamella connecting pin 13 stretches out valve plate adapter sleeve 21, and the both sides of valve plate adapter sleeve 21 all are provided with promotion seat 22, and promotion seat 22 inboard agrees with axial lamella connecting pin 13 mutually, and two promotion seat 22 outsides are fixed through clamp 23, and left valve plate 14 and right valve plate 18 are connected respectively to two promotion seats 22.

In the above, the upper valve body 3 is provided with the bracket 8, the bracket 8 is provided with the electric actuator 9, the bracket 8 is rotatably provided with the nut seat 11 through the thrust bearing, the nut seat 11 is sleeved on the valve shaft 10, and the nut seat 11 is in transmission connection with the valve shaft 10. The electric actuator 9 is started to drive the screw seat 11 to rotate, so as to drive the valve shaft 10 to lift up and down, and the valve plate is driven to lift up and down through the lifting of the valve shaft 10.

In order to further optimize the product mechanism, guide wheels 5 are arranged at two ends of the outer sides of the left valve plate 14 and the right valve plate 18, and the guide wheels 5 are in contact with the side wall of the lower valve body 4. When controlling the valve plate oscilaltion, leading wheel 5 forms the direction with the lateral wall contact of lower valve body 4, avoids controlling the valve plate and takes place to rock.

Furthermore, a water supply port 1 and an overflow diffusing port 2 are respectively arranged on two sides of the upper end of the upper valve body 3. Water is injected into the cavities of the upper valve body 1 and the lower valve body 2 through the water feeding port 1, and after the liquid level reaches the overflow discharging port 2, if gas escapes from the space between the valve plate and the pipeline, the gas is mixed into the water and is discharged from the overflow discharging port along with water flow.

Foretell, the lower extreme of lower valve body 3 is provided with drain 6 to inside the clearance valve body.

The working process comprises the following steps:

the electric actuator 9 drives the screw seat 11 to rotate, so as to drive the valve shaft 10 to perform lifting motion, the lifting of the valve shaft 10 drives the left valve plate and the right valve plate to lift, and the guide wheel 5 plays a role in guiding in the lifting process. After the left valve plate and the right valve plate descend, the lower ends of the pre-tightening levers 19 are in contact with the ejector pins 20, the upper ends of the two pre-tightening levers 19 form extrusion force, lever pin shafts 19 serve as pivots to form a lever structure, pre-tightening of the valve plates is achieved, namely sealing pre-tightening force of the left valve plate and the right valve plate between adjacent pipelines is formed, sealing performance between the valve plates and the pipelines is improved, meanwhile, sealing performance is improved due to the fact that sealing strips embedded on the pipelines increase sealing performance, the purpose of soft-hard composite sealing is achieved, and the service life of the valve is effectively prolonged.

The above-described embodiments are merely preferred embodiments of the present invention, and not intended to limit the scope of the utility model, so that equivalent variations or modifications in the structure, characteristics and principles of the utility model described in the claims should be included.

Claims

1. A novel corrosion-resistant fuel gas cutoff gate valve comprises a valve body, a valve shaft (10) and a valve plate, wherein the valve shaft and the valve plate are arranged in the valve body, the valve plate is positioned between pipelines on two sides of the valve body, it is characterized by also comprising an electric actuator (9), a pre-tightening lever (19) and a thimble (20), the electric actuator (9) is arranged on the valve body, the electric actuator (9) is in transmission connection with the valve shaft (10), the valve plate comprises a left valve plate (14) and a right valve plate (18), the left valve plate (14) and the right valve plate (18) are arranged on two sides of the valve shaft (10), opposite sides of the left valve plate (14) and the right valve plate (18) are respectively hinged with the pre-tightening lever (19), the thimble (20) is arranged at the end part of the valve body, the thimble (20) is positioned between the two pre-tightening levers (19), the pipeline is inlaid with a sealing strip (15), and the sealing strip (15) faces the valve plate.

2. The novel corrosion-resistant gas cutoff gate valve according to claim 1, characterized in that the pre-tightening lever (19) is wedge-shaped, the pre-tightening lever (19) is hinged to the valve plate through a lever pin (17), the lever pin (17) is located at a large end of the pre-tightening lever (19), an inclined surface is arranged at a small end of the pre-tightening lever (19), and the upper end of the thimble (20) is wedge-shaped.

3. The novel corrosion-resistant gas cutoff gate valve according to claim 1, characterized in that a return spring (16) is arranged between the left valve plate (14) and the right valve plate (18).

4. The novel corrosion-resistant gas cutoff gate valve according to claim 1, characterized in that a valve plate connecting sleeve (21) is sleeved on the end of the valve shaft (10), the valve plate connecting sleeve (21) is fixedly connected with the valve shaft (10) through a shaft plate connecting pin (13), two lifting seats (22) are arranged on both sides of the valve plate connecting sleeve (21), the outer sides of the two lifting seats (22) are fixed through a hoop (23), and the two lifting seats (22) are respectively connected with the left valve plate (14) and the right valve plate (18).

5. The novel corrosion-resistant gas cutoff gate valve according to claim 1, characterized in that a support (8) is arranged on the valve body, the electric actuator (9) is arranged on the support (8), a nut seat (11) is rotatably arranged on the support (8), the nut seat (11) is sleeved on the valve shaft (10), and the nut seat (11) is in transmission connection with the valve shaft (10).

6. The novel corrosion-resistant gas cutoff gate valve according to claim 1, characterized in that guide wheels (5) are arranged at both outer ends of the left valve plate (14) and the right valve plate (18), and the guide wheels (5) are in contact with the side wall of the valve body.

7. The novel corrosion-resistant gas cutoff gate valve according to claim 1, characterized in that a water supply port (1) and an overflow bleed port (2) are respectively provided on both sides of the upper end of the valve body.

8. The novel corrosion-resistant gas cutoff gate valve according to claim 1, characterized in that a sewage drain (6) is provided at the lower end of the valve body.