CN210068979U - Pneumatic ventilation butterfly valve - Google Patents

Abstract

The utility model relates to a pneumatic ventilation butterfly valve, including valve body, valve plate and valve rod, still including gear box, cylinder case and the twist grip that links firmly together, valve rod one end stretches into the valve intracavity and links firmly with the valve plate, the other end stretches into the gear box and links firmly with the drive gear in the gear box, the rotation axis of twist grip stretches into in the gear box, be fixed with the handle gear on the rotation axis, the handle gear meshes with drive gear mutually, the cylinder incasement is equipped with telescopic cylinder, telescopic cylinder's telescopic shaft is mobile to pass in the through-hole on gear box and the cylinder case stretches into the gear box in, be fixed with the rack on telescopic cylinder's the telescopic shaft, the rack meshes with drive gear mutually. The utility model discloses a set up cylinder and twist grip, the closing of butterfly valve can control the operation through pneumatic and manual dual mode with closing, and the flexible operation is various, and operating personnel can select according to operating condition, and is convenient laborsaving, in addition, through setting up the sealing washer in the valve plate outer lane, effectively improves the sealing performance of butterfly valve.

Description

Pneumatic ventilation butterfly valve

Technical Field

The utility model relates to a ventilation butterfly valve, concretely relates to pneumatic ventilation butterfly valve.

Background

The ventilation butterfly valve is a non-closed butterfly valve, is widely applied to dust-containing cold air or hot air gas pipelines of ventilation and environmental protection projects in the industries of chemical industry, building materials, power stations, glass and the like, and is used as a pipeline control device for regulating the flow or cutting off gas media. At present, current butterfly valve generally includes valve body, valve rod, valve plate and constitutes, generally opens and closes the valve plate through manual, and the operation is inconvenient, wastes time and energy moreover, and because the airtight type characteristic setting of non-exists the poor problem of sealing performance of current ventilation butterfly valve ubiquitous moreover.

SUMMERY OF THE UTILITY MODEL

To the not enough in the background art, the utility model provides a pneumatic ventilation butterfly valve.

The utility model adopts the technical proposal that: the utility model provides a pneumatic ventilation butterfly valve, includes valve body, valve plate and valve rod, the valve body in be equipped with the valve pocket, still including gear box, cylinder case and the twist grip who links firmly together, the gear box fix on the valve body, valve rod one end stretch into the valve intracavity and link firmly with the valve plate, the other end stretches into the gear box and links firmly with the drive gear in the gear box, the rotation axis of twist grip stretch into in the gear box, be fixed with the handle gear on the rotation axis, handle gear and drive gear mesh mutually, the cylinder incasement be equipped with telescopic cylinder, telescopic cylinder's telescopic shaft is mobile to pass the through-hole on gear box and the cylinder case and stretch into in the gear box, telescopic cylinder's telescopic shaft is fixed with the rack, the rack meshes with drive gear mutually.

Further, gear box lower extreme integrated into one piece have a first flange connector, valve body upper end be equipped with the second flange connector of first flange connector looks adaptation, first flange connector and second flange connector link firmly through the bolt.

Further, the valve rod pass from the shaft hole of first flange connector and second flange connector to with first flange connector and second flange connector swivelling joint, be equipped with the lubrication groove on the valve rod that is located the shaft hole.

Furthermore, the depth of the lubricating groove is 0.5-2 mm.

Further, the valve plate outer lane be equipped with the spread groove, the spread groove is embedded to have the sealing washer.

Furthermore, the connecting groove is a T-shaped groove, and two sides of the sealing ring are provided with rounded corners.

Furthermore, the sealing ring is a rubber sealing ring or a lead powder oil-immersed asbestos packing.

Furthermore, the rotating shaft of the rotating handle is rotatably connected with the gear box through a bearing.

Further, the valve plate on integrated into one piece have a fixed block, the fixed block on be equipped with the fixed orifices that supplies the valve rod to pass, still be equipped with on the fixed block with fixed orifices vertically bolt hole, the valve rod on be equipped with the screw that corresponds with the fixed orifices.

The utility model has the advantages that: the utility model discloses a set up cylinder and twist grip, the closing of butterfly valve can control the operation through pneumatic and manual dual mode with closing, and the flexible operation is various, and operating personnel can select according to operating condition, and is convenient laborsaving, in addition, through setting up the sealing washer in the valve plate outer lane, effectively improves the sealing performance of butterfly valve, has simple structure, the simple operation, advantage that sealing performance is good.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

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

Fig. 3 is a schematic structural view of the valve plate.

In the figure: 1. a valve body; 2. a valve plate; 3. a valve stem; 4. a valve cavity; 5. a gear case; 6. a cylinder case; 7. rotating the handle; 8. a transmission gear; 9. a rotating shaft; 10. a handle gear; 11. a telescopic cylinder; 12. a through hole; 13. a rack; 14. a first flange connector; 15. a second flange connector; 16. a bolt; 17. a lubrication groove; 18. connecting grooves; 19. a seal ring; 20. rounding off; 21. a bearing; 22. a fixed block; 23. a fixing hole; 24. bolt holes.

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. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that, if directional indications (such as upper, lower, left, right, front and rear … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are changed accordingly.

In addition, if there is a description relating to "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is 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 at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

The utility model provides a pneumatic ventilation butterfly valve.

In the embodiment, referring to fig. 1 to 3, the pneumatic ventilation butterfly valve comprises a valve body 1, a valve plate 2 and a valve rod 3, wherein a valve cavity 4 is arranged in the valve body 1, the pneumatic ventilation butterfly valve further comprises a gear box 5, a cylinder box 6 and a rotating handle 7 which are fixedly connected together, the gear box 5 is fixed on the valve body 1, one end of the valve rod 3 extends into the valve cavity 4 to be fixedly connected with the valve plate 2, the other end of the valve rod extends into the gear box 5 to be fixedly connected with a transmission gear 8 in the gear box 5, a rotating shaft 9 of the rotating handle 7 extends into the gear box 5, a handle gear 10 is fixed on the rotating shaft 9, the handle gear 10 is meshed with the transmission gear 8, a telescopic cylinder 11 is arranged in the cylinder box 6, a telescopic shaft of the telescopic cylinder 11 can movably penetrate through a through hole 12 in the gear box and the cylinder box to extend into the gear box, the rack 13 is meshed with the transmission gear 8.

After the technical scheme above the adoption, the accessible cylinder drives the rack and is reciprocating motion, thereby the rack drives the rotatory valve plate that drives on valve rod and the valve rod of drive gear rotatory and rotates, realizes closing and closing of butterfly valve, can also drive the valve plate rotation on valve rod and the valve rod through rotating the twist grip in addition and realize closing and closing of butterfly valve, and control mode is various, can rotate according to operating condition.

In the utility model, a first flange connector 14 is integrally formed at the lower end of the gear box 6, a second flange connector 15 matched with the first flange connector 14 is arranged at the upper end of the valve body 2, and the first flange connector 14 and the second flange connector 15 are fixedly connected through a bolt 16; the valve rod 3 penetrates through the shaft holes of the first flange connector 14 and the second flange connector 15 and is rotatably connected with the first flange connector and the second flange connector, and a lubricating groove 17 is formed in the valve rod positioned in the shaft holes; the depth of the lubricating groove is 0.5-2 mm. Current valve rod is the straight-bar structure, and after the butterfly valve was used for a long time, it was died to rust the card easily between valve rod and the shaft hole, and this practicality is through setting up the lubrication groove, alright pack lubricating oil in the lubrication groove in the equipment to avoid because rust between valve rod and the shaft hole and block diely, guarantee the smooth and easy nature of butterfly valve switching.

The outer ring of the valve plate 2 is provided with a connecting groove 18, and a sealing ring 19 is embedded in the connecting groove 18; the connecting groove 18 is a T-shaped groove, and two sides of the sealing ring 19 are provided with rounded corners 20; the sealing ring 19 is a rubber sealing ring or a lead powder oil-immersed asbestos packing.

Through setting up the sealing washer, improve the leakproofness degree between valve plate and the valve pocket inner wall to improve the sealing performance of butterfly valve, the stability that the sealing washer is connected is guaranteed to sealing washer embedding "T" inslot, in addition, through setting up the radius angle in the both sides of sealing washer, reduces the friction between sealing washer when closed and the valve pocket inner wall, improves the smooth and easy nature of butterfly valve switching, improves the life of sealing washer

The rotating shaft 9 of the rotating handle 7 is rotationally connected with the gear box through a bearing 21; the valve plate 2 on integrated into one piece have a fixed block 22, the fixed block 22 on be equipped with the fixed orifices 23 that supplies the valve rod to pass, still be equipped with on the fixed block 22 with fixed orifices 23 vertically bolt hole 24, the valve rod on be equipped with the screw that corresponds with the fixed orifices. The dead lever stretches into in the fixed orifices of fixed block to aim at the bolt hole on the fixed block with the screw on the dead lever, then through bolt with valve rod and valve plate fixed connection, this kind of structure equipment is more convenient, connects stably.

The utility model discloses a set up cylinder and twist grip, the closing of butterfly valve can control the operation through pneumatic and manual dual mode with closing, and the flexible operation is various, and operating personnel can select according to operating condition, and is convenient laborsaving, in addition, through setting up the sealing washer in the valve plate outer lane, effectively improves the sealing performance of butterfly valve, has simple structure, the simple operation, advantage that sealing performance is good.

The skilled person should understand that: although the present invention has been described in terms of the above embodiments, the inventive concepts are not limited to the embodiments, and any modifications that utilize the inventive concepts are intended to be included within the scope of the appended claims.

Claims (9)

1. The utility model provides a pneumatic ventilation butterfly valve, includes valve body, valve plate and valve rod, the valve body in be equipped with valve pocket, its characterized in that: still including gear box, cylinder case and the twist grip that links firmly together, the gear box fix on the valve body, valve rod one end stretch into the valve intracavity and link firmly with the valve plate, the other end stretch into the gear box and link firmly with the drive gear in the gear box, the rotation axis of twist grip stretch into in the gear box, be fixed with the handle gear on the rotation axis, handle gear and drive gear mesh mutually, the cylinder incasement be equipped with telescopic cylinder, telescopic cylinder's telescopic shaft can movably pass the through-hole on gear box and the cylinder case and stretch into in the gear box, telescopic cylinder's telescopic shaft is fixed with the rack, rack and drive gear mesh mutually.

2. A pneumatic vent butterfly valve in accordance with claim 1, wherein: the gear box lower extreme integrated into one piece have a first flange connector, valve body upper end be equipped with the second flange connector of first flange connector looks adaptation, first flange connector and second flange connector link firmly through the bolt.

3. A pneumatic vent butterfly valve in accordance with claim 2, wherein: the valve rod passes through the shaft holes of the first flange connector and the second flange connector and is rotatably connected with the first flange connector and the second flange connector, and a lubricating groove is formed in the valve rod in the shaft hole.

4. A pneumatic vent butterfly valve in accordance with claim 3, wherein: the depth of the lubricating groove is 0.5-2 mm.

5. A pneumatic vent butterfly valve according to any one of claims 1 to 4, wherein: the valve plate outer lane be equipped with the spread groove, the spread groove is embedded to have the sealing washer.

6. A pneumatic vent butterfly valve in accordance with claim 5, wherein: the connecting groove is a T-shaped groove, and two sides of the sealing ring are provided with rounded corners.

7. A pneumatic vent butterfly valve in accordance with claim 5, wherein: the sealing ring is a rubber sealing ring or a lead powder oil-immersed asbestos packing.

8. A pneumatic vent butterfly valve in accordance with claim 1, wherein: the rotating shaft of the rotating handle is rotatably connected with the gear box through a bearing.

9. A pneumatic vent butterfly valve in accordance with claim 1, wherein: the valve plate on integrated into one piece have a fixed block, the fixed block on be equipped with the fixed orifices that supplies the valve rod to pass, still be equipped with on the fixed block with fixed orifices vertically bolt hole, the valve rod on be equipped with the screw that corresponds with the fixed orifices.

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