CN213527496U - Strip-shaped float valve pin structure capable of reducing blocking rate - Google Patents
Strip-shaped float valve pin structure capable of reducing blocking rate Download PDFInfo
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- CN213527496U CN213527496U CN202020677165.3U CN202020677165U CN213527496U CN 213527496 U CN213527496 U CN 213527496U CN 202020677165 U CN202020677165 U CN 202020677165U CN 213527496 U CN213527496 U CN 213527496U
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Abstract
A strip-shaped float valve foot structure capable of reducing the clamping rate comprises a tower plate (1) with an opening (2), a strip-shaped float valve body (3) arranged at the opening and capable of opening and closing the opening, and valve feet (4) arranged at two ends of the float valve body and matched with the opening, wherein the strip-shaped float valve body is provided with a plurality of holes; the upper part of the valve foot is vertical to the tower plate, and the lower part of the valve foot is inclined towards the outer side of the float valve body to form an inclined baffle (5); a chamfer (4) is formed at the lower edge of the opening of the tower plate and can be attached to the inclined baffle. The clamping rate of the strip-shaped floating valve can be obviously reduced, and the downtime of the floating valve tower due to maintenance is reduced. Simple structure, low cost, can reform transform fast on current float valve tower, improve production efficiency.
Description
Technical Field
The utility model relates to a float valve tower in the chemical industry field, more specifically say and relate to a can reduce bar float valve foot structure of card death rate.
Background
The float valve tower is a new tower type developed and is characterized by that at every sieve hole a valve plate capable of moving up and down is mounted. When the air speed of the sieve holes is high, the valve plate is jacked up and rises, and when the air speed is low, the valve plate falls due to the self weight. The lifting position of the valve plate is automatically adjusted along with the air flow, so that the air speed entering the liquid layer is basically stable. And gas enters the liquid layer in the horizontal direction at the lower side of the valve plate, so that the entrainment amount of liquid foam is reduced, and the gas-liquid contact time is prolonged.
The float valve tower plate is widely applied to mass transfer processes of rectification, stabilization, absorption, desorption and the like under pressurization, normal pressure and reduced pressure in the petrochemical industry. The diameter of the float valve tower used in China is 200-6400 mm, and the using effect is good. The general structure of the floating valve tower plate is that a plurality of holes are arranged on the tower plate with a downcomer as airflow channels, valve plates capable of floating up and down are arranged above the holes, and ascending airflow contacts with liquid phase passing through the tower plate through the valve plates to carry out mass transfer. The floating valve column plate is roughly compared with the common column plates such as a round bubble cap, a sieve plate, a tongue shape and the like in the following points:
the treating capacity is smaller than that of tongue-shaped sieve tray and is 20-40% greater than that of circular bubble cap tray.
The operational elasticity is larger than that of a round bubble cap, a tongue shape and a sieve plate, and the elasticity of the tower plate calculated in the chapter starts from the allowable range of the hydrodynamics of the tower plate. The floating valve tray can keep higher efficiency in a wide gas-liquid load variation range.
And the pressure drop of the multi-plate is larger than that of the tongue-shaped sieve plate and smaller than that of the bubble cap tower plate. The liquid level gradient over the tray is also small.
Fourthly, the entrainment quantity is smaller than that of the tongue shape and the bubble cap and is slightly larger than that of the sieve plate.
The structure is simple, and the installation is convenient; the manufacturing cost is about 60-80% of the tower plate of the bubble cap and is 120-130% of that of the sieve plate.
A float valve of a float valve tower. At present, F-1 type (equivalent to foreign V-1 type) float valves and strip float valves exist, the F-1 type float valve rotates when working, and valve feet are easy to wear, deform and clamp or fall off. The valve foot of the strip-shaped floating valve only participates in up-and-down sliding, the blocking rate is reduced by 20% compared with that of an F-1 type floating valve, but certain blocking rate still exists due to scaling, corrosion, adhesion, deformation and the like.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem, the utility model provides a can reduce bar float valve foot structure of card death rate, technical scheme as follows.
A strip-shaped float valve foot structure capable of reducing the clamping rate comprises a tower plate 1 with an opening 2, a strip-shaped float valve body 3 arranged at the opening and capable of opening and closing the opening, and valve feet 4 arranged at two ends of the float valve body and matched with the opening, wherein the valve feet are arranged on the two ends of the float valve body; the upper part of the valve foot is vertical to the tower plate, and the lower part of the valve foot is inclined towards the outer side of the float valve body to form an inclined baffle 5; a chamfer 4 is formed at the lower edge of the opening of the tower plate and can be attached to the inclined baffle.
Therefore, the included angle between the inclined baffle and the upper part of the valve pin is an obtuse angle rather than a right angle, so that scaling and impurity accumulation are not easy to occur; the lower edge of the opening forms a chamfer, the length of a vertical gap between the valve foot and the tower plate is shortened, so that the gap is not easy to block due to scale, the friction between the valve foot and the tower plate when the valve foot slides up and down in the opening is reduced, and the valve foot is not easy to block due to deformation of the valve foot.
According to a can reduce bar float valve foot structure of card death rate, its characterized in that: the chamfer 4 occupies 40% to 50% of the thickness of the tray.
Therefore, the strength of the opening of the tower plate can be ensured.
According to a can reduce bar float valve foot structure of card death rate, its characterized in that: the included angle between the inclined baffle 5 and the upper part of the valve foot 4 is 110-130 degrees.
Therefore, elastic deformation caused by overlarge included angle when the inclined baffle moves upwards can be avoided.
According to a can reduce bar float valve foot structure of card death rate, its characterized in that: the clearance between the valve foot 4 and the side wall of the opening 2 is 2mm-3 mm.
According to the utility model discloses a can reduce bar float valve foot structure of card death rate, can show the card death rate that reduces bar float valve, reduced the time of float valve tower because of overhauing the shut down. Simple structure, low cost, can reform transform fast on current float valve tower, improve production efficiency.
Drawings
FIG. 1 shows a valve stem structure of a strip-shaped float valve capable of reducing the jamming rate
Wherein 1 is a tower plate, 2 is an opening, 3 is a float valve body, 4 is a valve foot, 5 is an inclined baffle, and 6 is a chamfer.
Detailed Description
Example 1
A strip-shaped float valve foot structure capable of reducing the clamping rate comprises a tower plate 1 with an opening 2, a strip-shaped float valve body 3 arranged at the opening and capable of opening and closing the opening, and valve feet 4 arranged at two ends of the float valve body and matched with the opening, wherein the valve feet are arranged on the two ends of the float valve body; the upper part of the valve foot is vertical to the tower plate, and the lower part of the valve foot is inclined towards the outer side of the float valve body to form an inclined baffle 5; a chamfer 4 is formed at the lower edge of the opening of the tower plate and can be attached to the inclined baffle.
Therefore, the included angle between the inclined baffle and the upper part of the valve pin is an obtuse angle rather than a right angle, so that scaling and impurity accumulation are not easy to occur; the lower edge of the opening forms a chamfer, the length of a vertical gap between the valve foot and the tower plate is shortened, so that the gap is not easy to block due to scale, the friction between the valve foot and the tower plate when the valve foot slides up and down in the opening is reduced, and the valve foot is not easy to block due to deformation of the valve foot.
The strip-shaped valve stem structure of the float valve capable of reducing the blocking rate as claimed in claim 1, wherein: the chamfer 4 occupies 45% of the thickness of the tray.
Therefore, the strength of the opening of the tower plate can be ensured.
The strip-shaped valve stem structure of the float valve capable of reducing the blocking rate as claimed in claim 1, wherein: the inclined baffle 5 and the upper part of the valve foot 4 form an included angle of 115 degrees.
Therefore, elastic deformation caused by overlarge included angle when the inclined baffle moves upwards can be avoided.
The strip-shaped valve stem structure of the float valve capable of reducing the blocking rate as claimed in claim 1, wherein: the clearance between the valve foot 4 and the side wall of the opening 2 is 2 mm.
According to the utility model discloses a can reduce bar float valve foot structure of card death rate, can show the card death rate that reduces bar float valve, reduced the time of float valve tower because of overhauing the shut down. Simple structure, low cost, can reform transform fast on current float valve tower, improve production efficiency.
Claims (4)
1. A strip-shaped float valve foot structure capable of reducing the clamping rate comprises a tower plate (1) with an opening (2), a strip-shaped float valve body (3) arranged at the opening and capable of opening and closing the opening, and valve feet (4) arranged at two ends of the float valve body and matched with the opening, wherein the strip-shaped float valve body is provided with a plurality of holes; the upper part of the valve foot is vertical to the tower plate, and the lower part of the valve foot is inclined towards the outer side of the float valve body to form an inclined baffle (5); a chamfer (6) is formed at the lower edge of the opening of the tower plate and can be attached to the inclined baffle.
2. The strip-shaped valve stem structure of the float valve capable of reducing the blocking rate as claimed in claim 1, wherein: the chamfer (6) occupies 40-60% of the thickness of the tray (1).
3. The strip-shaped valve stem structure of the float valve capable of reducing the blocking rate as claimed in claim 1, wherein: the included angle between the inclined baffle (5) and the upper part of the valve foot (4) is 120-150 degrees.
4. The strip-shaped valve stem structure of the float valve capable of reducing the blocking rate as claimed in claim 1, wherein: the clearance between the valve foot (4) and the side wall of the opening (2) is 2mm-3 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020677165.3U CN213527496U (en) | 2020-04-28 | 2020-04-28 | Strip-shaped float valve pin structure capable of reducing blocking rate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020677165.3U CN213527496U (en) | 2020-04-28 | 2020-04-28 | Strip-shaped float valve pin structure capable of reducing blocking rate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213527496U true CN213527496U (en) | 2021-06-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020677165.3U Active CN213527496U (en) | 2020-04-28 | 2020-04-28 | Strip-shaped float valve pin structure capable of reducing blocking rate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213527496U (en) |
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2020
- 2020-04-28 CN CN202020677165.3U patent/CN213527496U/en active Active
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