CN112253768A

CN112253768A - Bypass structure and using method thereof

Info

Publication number: CN112253768A
Application number: CN202011154905.6A
Authority: CN
Inventors: 刘国华; 刘采扉
Original assignee: Zhangjiagang Jinqiu Environmental Technology Co ltd
Current assignee: Zhangjiagang Jinqiu Environmental Technology Co ltd
Priority date: 2020-10-26
Filing date: 2020-10-26
Publication date: 2021-01-22

Abstract

The application discloses a bypass structure and a using method thereof, and relates to waste gas treatment equipment. The bypass structure includes: a bypass pipe; a bypass valve, the bypass valve comprising: the mounting seat is arranged in the bypass pipe and surrounds the bypass pipe for a circle; the cover plate is arranged on the mounting seat; the main shaft is arranged on one side of the cover plate and is connected with the cover plate through a connecting rod, two ends of the main shaft penetrate through the bypass pipe, and one end of the main shaft is provided with a rotating arm; the cylinder is arranged on the outer side of the bypass pipe, the lower end of the cylinder is provided with a joint, and the joint is connected with the rotating arm. This application can set up the cylinder in the outside of bypass pipe, avoids the telescopic link of cylinder to pass the pipeline, solves the flexible wearing and tearing problem that leads to of cylinder in the current bypass structure, guarantees the sealing performance of pipeline.

Description

Bypass structure and using method thereof

Technical Field

The application relates to the field of oil smoke waste gas treatment, in particular to a bypass structure and a using method thereof.

Background

The bypass structure is one of important structures in a high temperature and high pressure exhaust gas treatment apparatus for discharging high temperature and high pressure gas when an abnormal condition occurs in the apparatus. For example, when excessive high-temperature and high-pressure gas accumulates in the equipment, the temperature of the furnace is easily far higher than the set temperature, and the furnace is exploded, so that the excessive gas needs to be discharged through a bypass structure.

To this, like the chinese utility model patent of publication No. CN205815367U, disclose "a dust remover bypass device", including lift cylinder and bypass valve, the lift cylinder passes the flue and is connected with the bypass valve, and the bypass valve comprises bypass valve gap and bypass valve base, and the bypass valve base mounting is on the bypass flue, and the lift cylinder comprises cylinder block and cylinder support, and the cylinder block passes through valve rod and bypass valve cover connection, and a bypass sealing washer is installed respectively to bypass valve base upper end both sides, is equipped with self-lock device on the cylinder block, and the bypass sealing washer is 9 fonts. This dust remover bypass device has avoided causing the stove phenomenon because of the whereabouts of the valve plate that loses, closed the passageway that leads to the fact to hold back, provides sufficient time for overhauing power equipment, also ensures simultaneously can not cause because of revealing of bypass to discharge not up to standard.

Above-mentioned technical scheme has avoided causing the stove phenomenon because of losing the whereabouts of air valve plate, closing the passageway through setting up from locking-type cylinder, but, the lift cylinder need pass the flue and be connected with the bypass valve, and the telescopic link of cylinder is producing wearing and tearing to the pipe wall of flue easily at flexible in-process, destroys the sealing performance of pipeline. Meanwhile, the cylinder is directly connected with the bypass valve cover through the valve rod, the cylinder applies upward pulling force to the valve cover, and when the bypass valve is closed, if the bypass valve is not tightly sealed, gas leakage is easily caused.

Disclosure of Invention

The utility model provides a bypass structure solves the flexible wearing and tearing problem that leads to of cylinder in the current bypass structure, guarantees the sealing performance of pipeline.

In order to achieve the above purpose, the embodiments of the present application adopt the following technical solutions: a bypass structure, comprising: a bypass pipe; a bypass valve, the bypass valve comprising: the mounting seat is arranged in the bypass pipe and surrounds the bypass pipe for a circle; the cover plate is arranged on the mounting seat; the main shaft is arranged on one side of the cover plate and is connected with the cover plate through a connecting rod, two ends of the main shaft penetrate through the bypass pipe, and one end of the main shaft is provided with a rotating arm; the cylinder is arranged on the outer side of the bypass pipe, the lower end of the cylinder is provided with a joint, and the joint is connected with the rotating arm; and the steel wire rope is arranged between the joint and the rotating arm, and is in a relaxed state when the bypass valve is closed.

In the technical scheme, the main shaft is arranged on one side of the cover plate, the rotating arm is arranged at the end part of the main shaft and is connected with the air cylinder through the rotating arm, the telescopic rod of the air cylinder stretches and retracts to drive the rotating arm to rotate, and then the cover plate is driven to rotate around the main shaft, so that the opening and closing of the bypass valve are realized. This application can set up the cylinder in the outside of bypass pipe, avoids the telescopic link of cylinder to pass the pipeline, solves the flexible wearing and tearing problem that leads to of cylinder in the current bypass structure, guarantees the sealing performance of pipeline. Simultaneously, this application passes through wire rope connection cylinder and rocking arm, and when the bypass valve was closed, wire rope was the relaxed state, can not produce an ascending pulling force to the rocking arm, makes the apron closely close on the mount pad under the effect of dead weight, guarantees the sealed tightness of bypass valve.

Further, according to the embodiment of the application, wherein, the side wall of the bypass pipe is provided with the mounting opening, and the mounting opening is arranged above the mounting seat.

Further, according to this application embodiment, wherein, the mount includes: the sealing base is arranged on the outer edge of the mounting base; the sealing strip is arranged in the sealing base, and the edge of the cover plate is inserted into the sealing strip.

Further, according to this application embodiment, wherein, be provided with the seal groove in the sealing strip, the seal groove is used for the edge of cartridge apron.

Further, according to the embodiment of the present application, wherein the sealing strip has an inverted T shape.

Further, according to the embodiment of the application, the two ends of the main shaft are provided with the bearing bush assemblies.

Further, according to the embodiment of the application, among them, the axle bush subassembly includes: the bearing bush seat is sleeved on the main shaft; the bearing bush is arranged on the bearing bush seat and sleeved on the main shaft.

Further, according to the embodiment of the present application, wherein the cylinder is fixedly mounted on the bypass pipe through a cylinder block.

In order to achieve the above object, an embodiment of the present application further discloses a method for using the above bypass structure, including the following steps:

opening a bypass valve: the cylinder contracts to drive the rotating arm to rotate clockwise, so that one end of the cover plate, which is far away from the main shaft, leaves the mounting seat, and the bypass valve is opened;

closing the bypass valve: the cylinder stretches out to drive the cover plate to rotate anticlockwise, so that one end, far away from the main shaft, of the cover plate falls back to the mounting seat, and the bypass valve is closed.

Compared with the prior art, the method has the following beneficial effects: this application sets up the main shaft through one side at the apron, sets up the rocking arm at the tip of main shaft, is connected through rocking arm and cylinder, and the telescopic link of cylinder is flexible to be driven the rocking arm rotatory, and then drives the apron and rotate around the main shaft, realizes opening and shutting of bypass valve. This application can set up the cylinder in the outside of bypass pipe, avoids the telescopic link of cylinder to pass the pipeline, solves the flexible wearing and tearing problem that leads to of cylinder in the current bypass structure, guarantees the sealing performance of pipeline. Simultaneously, this application passes through wire rope connection cylinder and rocking arm, and when the bypass valve was closed, wire rope was the relaxed state, can not produce an ascending pulling force to the rocking arm, makes the apron closely close on the mount pad under the effect of dead weight, guarantees the sealed tightness of bypass valve

Drawings

The present application is further described below with reference to the drawings and examples.

Fig. 1 is a schematic view of a bypass arrangement of the present application.

Fig. 2 is a partially enlarged view of a portion a in fig. 1.

Fig. 3 is a top view of fig. 1.

Fig. 4 is a partially enlarged view of fig. 3 at B.

Fig. 5 is a schematic structural view of the sealing base in fig. 2.

FIG. 6 is a schematic view showing the structure of the weather strip of FIG. 2

In the attached drawings

1. Bypass pipe 2, mounting port 3, and cover plate

31. Cover plate edge 4, mounting seat 41 and sealing base

42. Upper side wall 43, lower side wall 431, baffle

44. Limiting groove 5, cylinder block 6 and cylinder

7. Joint 8, bearing bush component 81 and bearing bush seat

82. Bearing bush 83, sealing ring 9 and rotating arm

10. Spindle 11, connecting rod 12 and sealing strip

121. Sealing groove 122 and limiting part

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clear and fully described, embodiments of the present invention are further described in detail below with reference to the accompanying drawings. It is to be understood that the specific embodiments described herein are merely illustrative of some embodiments of the invention and are not limiting of the invention, and that all other embodiments obtained by those of ordinary skill in the art without the exercise of inventive faculty are within the scope of the invention.

In the description of the present invention, it should be noted that the terms "center", "middle", "upper", "lower", "left", "right", "inner", "outer", "top", "bottom", "side", "vertical", "horizontal", and the like indicate orientations or positional relationships based on those shown in the drawings, and are 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. Furthermore, the terms "a," "an," "first," "second," "third," "fourth," "fifth," and "sixth" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

For the purposes of simplicity and explanation, the principles of the embodiments are described by referring mainly to examples. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the embodiments. It will be apparent, however, to one skilled in the art that the embodiments may be practiced without these specific details. In some instances, well-known methods and structures have not been described in detail so as not to unnecessarily obscure the embodiments. In addition, all embodiments may be used in combination with each other.

Fig. 1 shows a schematic view of a bypass structure in the present application, fig. 2 is a partial enlarged view of a portion a in fig. 1, fig. 3 is a top view of fig. 1, and fig. 4 is a partial enlarged view of a portion B in fig. 3. As shown in fig. 1-4, the bypass structure includes a bypass pipe 1 and a bypass valve, and a mounting opening 2 is formed in a side wall of the bypass pipe 1 for mounting the bypass valve in the bypass pipe 1. Specifically, a mounting seat 4 is arranged in the bypass pipe 1, and the mounting seat 4 is arranged below the mounting opening 2, so that the bypass valve is convenient to mount. The mounting seat 4 winds the inner wall of the bypass pipe 1 for a circle, a main shaft 10 is arranged on one side of the cover plate 3, the main shaft 10 is connected with the cover plate 3 through a connecting rod 11, and the cover plate 3 can be driven to rotate around one side of the main shaft 10 by rotating the main shaft 10, so that the bypass valve is opened and closed. Two ends of a main shaft 10 penetrate through the bypass pipe 1, a bearing bush assembly 8 and a rotating arm 9 are arranged at the end part of the main shaft 10, and the main shaft 10 is driven to rotate by rotating the rotating arm 9, so that the bypass valve is opened and closed. The bypass pipe is characterized in that an air cylinder 6 is arranged on the outer side of the bypass pipe 1, the air cylinder 6 is fixedly installed on the bypass pipe 1 through an air cylinder seat 5, a joint 7 is arranged at the tail end of a telescopic rod of the air cylinder seat 6, the joint 7 is connected with a rotary arm 9, the rotary arm 9 is driven to rotate through the expansion and contraction of the telescopic rod, and then the bypass valve is opened and closed.

In the technical scheme, a main shaft 10 is arranged on one side of the cover plate 3, a rotating arm 9 is arranged at the end part of the main shaft 10, the rotating arm 9 is connected with the air cylinder 6 through the rotating arm 9, the telescopic rod of the air cylinder 6 stretches and retracts to drive the rotating arm 9 to rotate, then the cover plate 3 is driven to rotate around the main shaft 10, and the opening and closing of the bypass valve are achieved. This application can set up cylinder 6 in bypass pipe 1's the outside, avoids cylinder 6's telescopic link to pass the pipeline, solves the flexible wearing and tearing problem that leads to of cylinder in the current bypass structure, guarantees the sealing performance of pipeline.

Furthermore, the joint 7 and the rotating arm 9 are flexibly connected through a steel wire rope. The steel wire rope mainly plays a role in buffering, and abrasion caused by rapid rotation of the main shaft due to rapid contraction of the air cylinder 6 can be avoided. Meanwhile, when the bypass valve is closed, the telescopic rod of the air cylinder 6 extends downwards, the steel wire rope is in a relaxed state, an upward pulling force cannot be generated on the rotating arm 9, the cover plate 3 can be tightly closed on the mounting seat 4 under the action of self weight, and the sealing tightness of the bypass valve is ensured.

Further, the bearing bush subassembly includes axle bush seat 81, axle bush 82 and sealing washer 83, and axle bush seat 81, axle bush 82 all overlap the tip at main shaft 10, and axle bush seat 81 and bypass pipe 1 welded connection, axle bush 82 set up on axle bush seat 81, and the sealing washer setting is between axle bush 82 and main shaft 10.

Fig. 2 shows a detailed structure of the seal structure on the mount 4 by enlarging a portion at a, fig. 5 is a schematic structural view of the seal base therein, and fig. 6 is a schematic structural view of the seal strip therein. With reference to fig. 2, 5 and 6, a sealing base 41 is disposed on an edge of the mounting seat 4, a sealing strip 12 is disposed in the sealing base 41, and when the bypass valve is closed, the cover plate edge 31 of the cover plate 3 is inserted into the sealing strip 12 to seal the cover plate 3 and the mounting seat 4.

Specifically, sealing base 41 has an upper side wall 42 and a lower side wall 43, and a receiving cavity is formed between upper side wall 41 and lower side wall 43 for receiving sealing tape 12. A sealing groove 121 is provided in the sealing strip 12, and the shape of the sealing groove 121 matches the shape of the cover plate edge 31. To further secure the sealing effect of the sealing strip 12, both the sealing groove 121 and the cover plate edge 31 are inclined outwards. The arrangement is convenient for the insertion of the edge 31 of the cover plate when the bypass valve is opened and closed; on the other hand, when the bypass valve is closed, because the lower part of the bypass valve has gas flowing, the gas pressure is greater than the upper part of the bypass valve, an upward thrust is generated on the cover plate 3, and because the sealing groove 121 and the cover plate edge 31 are both inclined outwards, the cover plate edge 31 applies an upward extrusion force on the sealing strip 12, so that the cover plate edge 31 and the sealing strip 12 are attached more tightly, and the sealing performance of the sealing strip 12 is further improved.

Meanwhile, the bottom of the upper side wall 42 and the bottom of the lower side wall 43 are provided with a concave limiting groove 44, the bottom of the two sealing strips 12 is provided with a convex limiting part 122, the limiting part 122 is matched with the limiting groove 44, and the limiting groove 44 plays a role in blocking the limiting part 122, so that the sealing strips 12 are prevented from being taken out when the cover plate edge 31 is pulled out of the sealing groove 121. Specifically, sealing tape 12 takes on an inverted T-shape due to the presence of stopper portion 122.

In addition, a baffle 431 is provided at the upper end of the lower sidewall 43, and the baffle 431 extends horizontally outward to support the cover plate 3.

Finally, the application also discloses a use method of the bypass structure, which comprises the following steps:

opening a bypass valve: the cylinder 7 contracts to drive the rotating arm 7 to rotate clockwise, so that one end of the cover plate 3, which is far away from the main shaft 10, leaves the mounting seat 4, and the bypass valve is opened;

closing the bypass valve: the cylinder 7 extends out to drive the rotation 7 to rotate anticlockwise, so that one end, far away from the main shaft 10, of the cover plate 3 falls back to the mounting seat 4, and the bypass valve is closed.

Although the illustrative embodiments of the present application have been described above to enable those skilled in the art to understand the present application, the present application is not limited to the scope of the embodiments, and various modifications within the spirit and scope of the present application defined and determined by the appended claims will be apparent to those skilled in the art from this disclosure.

Claims

1. A bypass structure, comprising:

a bypass pipe;

a bypass valve, the bypass valve comprising:

the installation seat is arranged in the bypass pipe and surrounds the bypass pipe for a circle;

the cover plate is arranged on the mounting seat;

the main shaft is arranged on one side of the cover plate and is connected with the cover plate through a connecting rod, two ends of the main shaft penetrate through the bypass pipe, and one end of the main shaft is provided with a rotating arm;

the cylinder is arranged on the outer side of the bypass pipe, the lower end of the cylinder is provided with a joint, and the joint is connected with the rotating arm;

and the steel wire rope is arranged between the joint and the rotating arm, and is in a relaxed state when the bypass valve is closed.

2. The bypass structure according to claim 1, wherein a mounting opening is formed in a side wall of the bypass pipe, and the mounting opening is disposed above the mounting seat.

3. A bypass arrangement according to claim 1, wherein the mounting block comprises:

the sealing base is arranged on the outer side edge of the mounting base;

the sealing strip is arranged in the sealing base, and the edge of the cover plate is inserted into the sealing strip.

4. The bypass structure according to claim 3, wherein a sealing groove is disposed in the sealing strip, and the sealing groove is used for inserting an edge of the cover plate.

5. A bypass arrangement according to claim 3, wherein the sealing strip is of inverted T-shape.

6. The bypass structure according to claim 1, wherein the main shaft is provided with a bearing bush assembly at both ends thereof.

7. The bypass arrangement according to claim 6, wherein the bearing shell assembly comprises:

the bearing bush seat is sleeved on the main shaft;

the bearing bush is arranged on the bearing bush seat, and the bearing bush is sleeved on the main shaft.

8. A bypass arrangement according to claim 1, wherein the cylinder is fixedly mounted to the bypass line by means of a cylinder block.

9. A method of using the bypass structure of claim 1, comprising the steps of:

opening a bypass valve: the cylinder contracts to drive the rotating arm to rotate clockwise, so that one end, far away from the main shaft, of the cover plate leaves the mounting seat, and the bypass valve is opened;

closing the bypass valve: the cylinder stretches out to drive the rotating shaft to rotate anticlockwise, so that one end, far away from the main shaft, of the cover plate falls back to the mounting seat, and the bypass valve is closed.