CN214222100U

CN214222100U - Balance open-close device for novel gas water seal check valve

Info

Publication number: CN214222100U
Application number: CN202023314957.3U
Authority: CN
Inventors: 尚崇飞; 刘卫杰; 张多多; 徐志通; 张小杰
Original assignee: HENAN YIHE VALVE CO Ltd
Current assignee: HENAN YIHE VALVE CO Ltd
Priority date: 2020-12-31
Filing date: 2020-12-31
Publication date: 2021-09-17
Anticipated expiration: 2030-12-31

Abstract

The utility model relates to a balance opening and closing device of a novel gas water seal check valve, which comprises a valve body, a flange seat, a flue and a balance opening and closing unit, wherein the valve body is provided with a balance opening and closing unit, and the balance opening and closing unit comprises a valve shaft and a water seal cover which are arranged in the valve body, and a cylinder and a fixed seat which are arranged outside the valve body; the valve shaft is rotationally connected with the valve body, a water sealing cover is arranged on the valve shaft and covers the flue, the water sealing cover comprises a semi-cylindrical sealing section, a semi-circular plate-shaped counterweight section and a balance counterweight, the counterweight sections are arranged at two ends of the sealing section, and the balance counterweight sections are provided with balance counterweights; one end of the valve shaft extends out of the valve body and is connected with a crank, two ends of the crank are respectively connected with an air cylinder, and the air cylinders are connected to the valve body through fixing seats. The utility model discloses a water seal cover is half cylinder form, and has increased the water seal cover and reach static balance state when making the valve close that the balance weight makes, and valve shaft and crank stress state are good, have improved water seal cover itself greatly and have resisted the unusual ability of assaulting of coal gas.

Description

Balance open-close device for novel gas water seal check valve

Technical Field

The utility model relates to a water seal check valve technical field especially relates to a novel balanced headstock gear of coal gas water seal check valve.

Background

Pipeline blast furnace equipment is commonly used in the industries of metallurgy, coking, electric power and the like, and a water seal check valve is correspondingly used for carrying out partition recovery control on coal gas in a pipeline needing recovery treatment control of blast furnace tail gas.

The water seal check valve of present trade adopts fan-shaped water seal cover as the wall device of coal gas usually, and its theory of operation does: the valve body is filled with water to the upper opening of the L-shaped gas pipeline, when the fan-shaped water seal cover rotates to the upper part of the gas pipeline, the water seal cover and the liquid level form a sealing pair to block the outward discharge of the gas, and when the fan-shaped water seal cover rotates to the side of the gas pipeline, the gas is discharged through the L-shaped pipeline.

The drive arrangement of above-mentioned fan-shaped water seal cover is mostly the single cylinder drive, adopts a cylinder drive rotation promptly, and this type of valve bore is great usually, and consequently it is great to open and close drive power, and the load has the impact fluctuation, and then when the valve closure state, because the water seal cover has the trend around valve shaft pivoted, and the load shock changes for drive arrangement need constantly provide great self-locking power and guarantee the closure state of valve, long-term use leads to drive arrangement plastic deformation such as valve shaft and crank easily.

The above conditions not only seriously affect the service life of equipment such as valves, but also can cause that the valve equipment can not be normally opened and closed at a critical moment, thus seriously affecting the normal production of the whole system and causing serious economic loss and safety accidents. Therefore, a novel balance opening and closing device of the gas water seal check valve is provided.

Disclosure of Invention

The utility model discloses a solve the problem that the fan-shaped water seal cover of tradition easily receives the undulant great influence valve of coal gas impact and opens and close, provide a novel balanced headstock gear of coal gas water seal check valve, through the rational design to the water seal cover structure, improved the stability that the water seal cover resisted the coal gas impact, improved the stress state of valve shaft simultaneously.

In order to achieve the above object, the utility model adopts the following technical scheme:

a balance opening and closing device of a novel gas water seal check valve comprises a valve body with a cylindrical structure, a flange seat communicated with the top end of the valve body, a flue and a balance opening and closing unit, wherein the flue and the balance opening and closing unit are arranged in the valve body;

the valve shaft is rotationally connected with the valve body, the water sealing cover is arranged on the valve shaft and covers the flue, the water sealing cover comprises a semi-cylindrical sealing section, a semi-circular plate-shaped counterweight section and a balance counterweight, the sealing section and the valve body are coaxially arranged, the counterweight sections are arranged at two ends of the sealing section, and the balance counterweight is arranged on the counterweight section;

one end of the valve shaft extends out of the valve body and is connected with a crank through a key sleeve, two ends of the crank are respectively connected with the air cylinders, the air cylinders are connected to the valve body through the fixing seats, and the air cylinders drive the water seal cover to rotate so as to control the on-off of the flue and the flange seat.

Further, still including the water charging system that is used for the internal water injection of valve, be used for to the outer drainage overflow system of valve body and be used for monitoring the level gauge of liquid level height in the valve body, water charging system and overflow system are located the one end of valve body and communicate with the valve body, the level gauge is located the other end of valve body and communicates with the valve body.

Furthermore, the upper end of the flue is arranged in the valve body and corresponds to the flange seat, and the lower end of the flue is bent in an L shape and then extends out of the valve body.

Further, two ends of the valve shaft penetrate through the flue and are rotatably connected with the valve body.

Furthermore, a through pipe is arranged on the flue, the through pipe and the valve body are coaxially arranged, and the through pipe transversely penetrates through the flue; and bearing seats are respectively arranged at two ends of the valve body.

Further, the valve shaft penetrates through the through pipe and extends out of the valve body to be connected with the bearing seat; and the joint of the valve shaft and the valve body is also provided with a packing seal.

Furthermore, the closed section and the counterweight section are of an integral structure, and the closed section and the counterweight section are connected and combined to form a circle; the opposite side walls of the counterweight sections on the two sides are connected with the balance counterweight through bolts, the balance counterweight is of a flat structure which is symmetrically distributed, and the symmetric center of the balance counterweight is the axis of the closed section.

Further, the fixing base is arranged on the valve body, the air cylinder is sleeved on the fixing base, and a piston rod of the air cylinder is connected with the end of the crank.

Through the technical scheme, the beneficial effects of the utility model are that:

the utility model has the advantages of reasonable design, adopt the balanced drive of double cylinder, the drive torque in the driving process is balanced, and the crank can not be crooked because of one-way drive power to improve the drive unit life-span, opening, closing of check valve is also more laborsaving, save time simultaneously.

The utility model discloses a check valve is kept apart well closing the back air supply, because the enclosed section is half cylinder structure, in addition counter weight section and balance weight all are located liquid for the water seal cover reaches static equilibrium state, and the valve shaft does not receive extra torque, and valve shaft and crank stress state are good, have improved water seal cover itself greatly and have resisted the unusual surge pressure's of coal gas ability, and can not increase extra moment of torsion for the crank, have reduced the required locking power that provides of drive arrangement under the valve closed state.

Drawings

Fig. 1 is a front view of the balance opening and closing device of the novel gas water seal check valve of the utility model.

Fig. 2 is a sectional view from a-a in fig. 1 of the balance opening and closing device of the novel gas water seal check valve of the present invention.

Fig. 3 is an enlarged schematic view of B in fig. 2 of the balance opening and closing device of the novel gas water seal check valve of the present invention.

Fig. 4 is a C-C sectional view in fig. 2 of the balance opening and closing device of the novel gas water seal check valve of the present invention.

Fig. 5 is a schematic structural view of the water seal cover of the balanced opening and closing device of the novel gas water seal check valve of the present invention.

The reference numbers in the drawings are as follows: 1 is the valve body, 2 is the flange seat, 3 is the flue, 4 is the valve shaft, 5 is the water seal cover, 51 is the closed section, 52 is the counter weight section, 53 is the balance weight, 6 is the cylinder, 7 is the fixing base, 8 is the crank, 9 is water charging system, 10 is overflow system, 11 is the level gauge, 12 is the siphunculus, 13 is the bearing frame, 14 is packing seal, 15 is the collar.

Detailed Description

The following detailed description of the embodiments of the present invention is made with reference to the accompanying drawings:

as shown in fig. 1-5, a balanced opening and closing device of a novel coal gas water seal check valve comprises a valve body 1 with a cylinder structure, a flange seat 2 communicated with the top end of the valve body 1, a flue 3 and a balanced opening and closing unit arranged in the valve body 1, and further comprises a water supplementing system 9 used for injecting water into the valve body 1, a liquid level meter 11 used for discharging water to the outside of the valve body 1 and overflowing the system 10 and monitoring the liquid level in the valve body 1, wherein the liquid level meter 11 is a magnetic liquid level meter, the water supplementing system 9 and the overflowing system 10 are located at one end of the valve body 1 and communicated with the valve body 1, and the liquid level meter 11 is located at the other end of the valve body 1 and communicated with the valve body.

In the embodiment, the upper end of the flue 3 is arranged in the valve body 1 and corresponds to the flange seat 2, the lower end of the flue 3 is bent in an L shape and then extends out of the valve body 1, and when the gas-water mixing valve is used specifically, gas is introduced through the lower end of the flue 3 and then flows out through the flange seat 2.

In order to realize the on-off of the coal gas, namely the on-off of the flue 3 and the flange seat 2, the valve body 1 is provided with the balance opening and closing unit, and the balance opening and closing unit comprises a valve shaft 4 and a water sealing cover 5 which are arranged in the valve body 1, and an air cylinder 6 and a fixed seat 7 which are arranged outside the valve body 1.

In this embodiment, valve shaft 4 and valve body 1 swivelling joint, it is concrete, 4 both ends of valve shaft pass flue 3 with 1 swivelling joint of valve body, for the convenience of valve shaft 4 wears to establish flue 3, be provided with siphunculus 12 on the flue 3, siphunculus 12 and the coaxial laying of valve body 1, siphunculus 12 transversely runs through flue 3 has guaranteed the leakproofness of flue 3.

When the valve shaft 4 is installed, bearing seats 13 are respectively arranged at two ends of the valve body 1, and the valve shaft 4 penetrates through the through pipe 12 and extends out of the valve body 1 to be connected with the bearing seats 13;

in order to ensure the sealing of the joint of the valve shaft 4 and the valve body 1, a packing seal 14 is further arranged at the joint of the valve shaft 4 and the valve body 1.

In this embodiment, be provided with on the valve shaft 4 water seal cover 5, valve shaft 4 can drive water seal cover 5 rotatory, water seal cover 5 covers and establishes outside flue 3, and water seal cover 5 includes half cylinder form closing segment 51, half plate form counter weight section 52 and balanced counter weight 53, closing segment 51 lays with the valve body 1 is coaxial, and closing segment 51 both ends all are provided with counter weight section 52, closing segment 51 and counter weight section 52 structure as an organic whole, closing segment 51 with it is circular to be the counter weight section 52 after the combination.

In order to facilitate the installation of the closed section 51 and the valve shaft 4, the middle part of the valve shaft 4 is prism-shaped, two ends of the valve shaft 4 are cylindrical, a shaft shoulder is formed at the position of the change of the section size of the valve shaft 4, and the length of the middle part of the valve shaft 4 is greater than the width of the flue 3 and is adaptive to the width 51 of the closed section;

the valve shaft 4 penetrates through the closed section 51, and the mounting ring 15 is further arranged between the closed section 51 and the valve shaft 4, specifically, the mounting ring 15 is of a hollow annular structure, the inner annular surface of the mounting ring 15 is a prismatic surface and is matched with the middle part of the valve shaft 4, and the mounting ring 15 abuts against a shaft shoulder and is connected with the closed section 51 through a plurality of circumferentially and uniformly distributed bolts;

the valve shaft 4 is connected with the water seal cover 5 through the mounting ring 15, so that the water seal cover 5 can be ensured to rotate along with the valve shaft 4, and the water seal cover 5 is ensured to be fixed on the valve shaft 4.

In this embodiment, the weight section 52 is provided with a balance weight 53, the balance weight 53 is a symmetrically distributed flat structure, that is, the balance weight 53 is symmetrical left and right, the symmetrical center is the axis of the closed section 51, and in order to facilitate the removal and replacement of the balance weight 53, the balance weight 53 is bolted to the opposite side walls of the weight sections 52 on both sides.

In order to facilitate the realization of the control of the rotation of the water seal cover 5, one end of the valve shaft 4 extends out of the valve body 1 and is connected with a crank 8 through a key sleeve, the two ends of the crank 8 are respectively connected with the air cylinder 6, and the air cylinder 6 is connected on the valve body 1 through the fixing seat 7.

When the valve is installed, the fixed seat 7 is arranged on the valve body 1, the air cylinder 6 is sleeved on the fixed seat 7, and a piston rod of the air cylinder 6 is connected with the end part of the crank 8;

through the synchronous one of two cylinders 6 and stretch out one and contract in coordination, realize that water seal cover 5 is rotatory with the break-make of control flue 3 and flange seat 2, its drive mode is the balanced drive of double-cylinder, and at the drive in-process, the drive torque is balanced, and crank 8 can not be crooked because of one-way drive power to improve the drive unit life-span.

This water seal check valve is when closing, and through moisturizing system 9 to moisturizing to flue 3 upper end in the valve body 1, level gauge 11 output liquid level signal, thereby control the liquid level height in the valve body 1 through mutually supporting of moisturizing system 9 and overflow system 10, and cylinder 6 drive water seal cover 5 is rotatory, under the effect of the liquid in water seal cover 5 to cut off flue 3 and flange seat 2, and then the separation coal gas flows.

Under the partition state, the closing section 51 of the water seal cover 5 is positioned at the upper end of the flue 3, the counterweight section 52 and the balance counterweight 53 are positioned at two sides of the flue 3 and are arranged in the liquid, so that the water seal cover 5 reaches a static balance state, the stability of the water seal cover 5 for resisting coal gas impact is greatly increased, the stress state of the valve shaft 4 is improved, the locking force required by the driving device under the valve closing state is reduced, the service life and the safety performance of the valve are integrally improved, the economic loss and the safety accidents caused by the fact that the valve cannot be normally opened and closed are effectively avoided, and the economic benefit of enterprises is effectively improved.

The above-mentioned embodiments are merely preferred embodiments of the present invention, and not intended to limit the scope of the present invention, so that equivalent changes or modifications made by the structure, features and principles of the present invention should be included in the claims of the present invention.

Claims

1. A balance opening and closing device of a novel gas water seal check valve comprises a valve body (1) with a cylindrical structure, a flange seat (2) communicated with the top end of the valve body (1), a flue (3) and a balance opening and closing unit, wherein the flue (3) and the balance opening and closing unit are arranged in the valve body (1), the balance opening and closing unit is arranged on the valve body (1), and comprises a valve shaft (4) and a water seal cover (5) which are arranged in the valve body (1), and an air cylinder (6) and a fixed seat (7) which are arranged outside the valve body (1);

the valve shaft (4) is rotationally connected with the valve body (1), the water sealing cover (5) is arranged on the valve shaft (4), the water sealing cover (5) is covered outside the flue (3), the water sealing cover (5) comprises a semi-cylindrical sealing section (51), a semi-circular plate-shaped counterweight section (52) and a balance counterweight (53), the sealing section (51) and the valve body (1) are coaxially arranged, the counterweight section (52) is arranged at each of two ends of the sealing section (51), and the balance counterweight (53) is arranged on the counterweight section (52);

one end of the valve shaft (4) extends out of the valve body (1) and is connected with a crank (8) through a key sleeve, two ends of the crank (8) are respectively connected with the air cylinder (6), the air cylinder (6) is connected onto the valve body (1) through the fixing seat (7), and the air cylinder (6) drives the water sealing cover (5) to rotate so as to control the on-off of the flue (3) and the flange seat (2).

2. The balance opening and closing device of the novel gas water seal check valve as claimed in claim 1, further comprising a water supplementing system (9) for injecting water into the valve body (1), an overflow system (10) for discharging water out of the valve body (1) and a liquid level meter (11) for monitoring the liquid level in the valve body (1), wherein the water supplementing system (9) and the overflow system (10) are located at one end of the valve body (1) and communicated with the valve body (1), and the liquid level meter (11) is located at the other end of the valve body (1) and communicated with the valve body (1).

3. The balance opening and closing device of the novel gas water seal check valve as claimed in claim 1, wherein the upper end of the flue (3) is arranged in the valve body (1) and corresponds to the flange seat (2), and the lower end of the flue (3) is bent in an L shape and then extends out of the valve body (1).

4. The balanced opening and closing device of the novel gas water seal check valve as claimed in claim 1, wherein two ends of the valve shaft (4) penetrate through the flue (3) and are rotatably connected with the valve body (1).

5. The balance opening and closing device of the novel gas water seal check valve as claimed in claim 4, wherein a through pipe (12) is arranged on the flue (3), the through pipe (12) and the valve body (1) are coaxially arranged, and the through pipe (12) transversely penetrates through the flue (3);

and bearing seats (13) are respectively arranged at two ends of the valve body (1).

6. The balanced opening and closing device of the novel gas water seal check valve as claimed in claim 5, wherein the valve shaft (4) passes through the through pipe (12) and extends out of the valve body (1) to be connected with the bearing seat (13);

and a packing seal (14) is also arranged at the joint of the valve shaft (4) and the valve body (1).

7. The balanced opening and closing device of the novel gas water seal check valve as claimed in claim 1, wherein the closing section (51) and the counterweight section (52) are of an integral structure, and the closing section (51) and the counterweight section (52) are connected and combined to form a circle;

the opposite side walls of the counterweight sections (52) at two sides are connected with the balance weights (53) through bolts, the balance weights (53) are of flat structures which are symmetrically distributed, and the symmetric center of the balance weights is the axis of the closed section (51).

8. The balance opening and closing device of the novel gas water seal check valve as claimed in claim 1, wherein the fixing seat (7) is arranged on the valve body (1), the cylinder (6) is sleeved on the fixing seat (7), and a piston rod of the cylinder (6) is connected with the end of the crank (8).