CN220600466U - High-temperature butterfly valve - Google Patents

Abstract

The utility model discloses a high-temperature butterfly valve, which comprises a valve body, a valve rod and a disc plate, wherein the valve rod penetrates through the valve body, a valve cover structure is arranged at the bottom of the valve body, the disc plate is circumferentially fixed on the valve rod, the valve rod drives to rotate so as to seal an inner cavity of the valve body, a groove surface is arranged at the position of the valve rod opposite to the disc plate, a U-shaped mounting piece and a matched cushion block are integrally formed on the disc plate, and the opening size of the U-shaped mounting piece is matched with the diameter of the groove surface of the valve rod; compared with the prior art, the high-temperature butterfly valve improves the inner structure of the valve body, so that the disc plate in the embodiment can be removed through the liquid outlet under the condition that the valve rod and the sealing structure of the valve rod and the valve body are not removed, the disassembly of the valve rod during maintenance is reduced, the problem of poor sealing of the high-temperature butterfly valve caused by the disassembly is solved, the service life of a sealing pair is prolonged, and the service life of the valve is prolonged.

Description

High-temperature butterfly valve

Technical Field

The utility model relates to the technical field of valves, in particular to a high-temperature butterfly valve.

Background

The butterfly valve is a valve which is opened and closed by rotating the valve rod and simultaneously driving the valve plate to rotate, and in a channel of the valve body of the butterfly valve, the valve plate rotates around an axis, and when the butterfly valve is completely opened, the butterfly valve has smaller flow resistance. When the valve is opened between about 15 degrees and 70 degrees, sensitive flow control can be performed, so that in the field of large-caliber regulation, the butterfly valve has become one of the fastest-growing valve varieties in more than ten years due to good flow regulation function and closing sealing property, and the valve has a very wide application range. The variety and the number of butterfly valves used are still expanding, and the butterfly valves are developed towards high temperature, high pressure, large caliber, high sealing performance, long service life, convenient adjustment and multifunction of one valve.

The butterfly valve of prior art is including, the sealing of dish board is not tight in the easy several vulnerable positions that produce maintenance problem in the use, the valve rod is sealed with the connection of valve body, the valve rod is sealed with the connection of dish board etc. and the above-mentioned problem of arousing including high temperature butterfly valve is under the influence of high temperature medium, the valve rod probably has the axial expansion problem that produces to the position change of dish board has been led to, simultaneously, prior art's butterfly valve needs to dismantle the valve plate, generally all need dismantle the valve rod wholly, and to this, the leak protection sealed pair that sets up between relative valve rod and the valve body is after dismantling many times, inefficacy faster.

Disclosure of Invention

In view of the prior art, the utility model aims to provide a high-temperature butterfly valve which can be quickly and simply disassembled from a disc plate and a valve cavity inner assembly without disassembling a valve rod part.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a high temperature butterfly valve, includes valve body, valve rod and dish board, the valve rod runs through the valve body and sets up the valve gap structure in the bottom of valve body, dish board circumference is fixed on the valve rod, through the inner chamber of valve rod drive rotation seal valve body, the valve rod is provided with the groove face in dish board department relatively, dish board integrated into one piece has U type installed part and cooperation to set up the cushion, the opening size of U type installed part and the groove face department diameter phase-match of valve rod.

As a further setting of above-mentioned scheme, be provided with the cambered surface laminating valve rod external diameter on the cushion, just all be provided with corresponding screw on U type installed part, dish board and the cushion.

As a further arrangement of the above, the valve cover structure includes a cover, a seal, and a disc at the bottom of the cover abutting the end of the valve stem.

As a further arrangement of the scheme, the thickness of the cushion block is matched with the size of the opening of the U-shaped mounting piece.

As a further arrangement of the scheme, the valve body is internally provided with a valve seat, the valve seat is matched with the disc plate to seal and isolate the valve cavity channel, and the valve body inner cavity of the valve seat opposite to the other side of the disc plate is larger than the diameter of the disc plate.

As a further arrangement of the scheme, a leakage-proof sealing pair is further arranged between the valve body and the valve rod, and the leakage-proof sealing pair comprises sealing filler, a sealing sleeve and a gland.

The beneficial effects are that: compared with the prior art, the high-temperature butterfly valve improves the inner structure of the valve body, so that the disc plate in the embodiment can be removed through the liquid outlet under the condition that the valve rod and the sealing structure of the valve rod and the valve body are not removed, the disassembly of the valve rod during maintenance is reduced, the problem of poor sealing of the high-temperature butterfly valve caused by the disassembly is solved, the service life of a sealing pair is prolonged, and the service life of the valve is prolonged.

Drawings

FIG. 1 is a schematic view of a butterfly valve according to the present utility model.

FIG. 2 is a schematic illustration of the installation of the valve stem and disk of the present utility model.

Description of the drawings: 1. a valve body; 2. a valve stem; 3. a dish plate; 31. a U-shaped mounting member; 32. a cushion block; 321. a cambered surface; 33. a screw hole; 4. a valve cover structure; 41. a cover; 42. a seal; 43. grinding; 5. a valve seat; 7. a leak-proof sealing pair; 71. sealing filler; 72. sealing sleeve; 73. and (5) pressing cover.

Detailed Description

In order that the above-recited objects, features and advantages of the present utility model will be more clearly understood, a more particular description of the utility model will be rendered by reference to the appended drawings and appended detailed description. In addition, the embodiments of the present application and the features in the embodiments may be combined with each other without conflicting with each other.

Example 1: the high temperature butterfly valve as shown in fig. 1-2 comprises a valve body 1, a valve rod 2 and a disc plate 3, wherein the valve rod 2 of the embodiment can refer to the prior art, a valve cover structure 4 is arranged at the bottom of the valve body 1 by penetrating through the valve body 1, the disc plate 3 is circumferentially fixed on the valve rod 2, an inner cavity of the valve body 1 is driven to rotate by the valve rod 2, the opening and closing valve control of the valve is realized, in addition, a groove surface 21 is arranged at the position of the valve rod 2 relative to the disc plate 3, a U-shaped mounting piece 31 and a matched cushion block 32 are integrally formed on the disc plate 3, the opening size of the U-shaped mounting piece 31 is matched with the diameter of the groove surface 21 of the valve rod 2, the disc plate 3 can penetrate through the valve rod 2 and is abutted on the valve cover structure 4, the leak-proof sealing pair 7 is circumferentially fixed in place, then the disc plate 3 is stretched in the direction of a water inlet of the valve body 1, the bayonet of the U-shaped mounting piece 31 is aligned with the valve rod 2, the groove surface 21 is clamped, then the cushion block 32 is placed in the opening position of the U-shaped mounting piece 31, the U-shaped mounting piece 31 is axially aligned with the groove surface 21, and the disc plate 3 is axially clamped by the bolt 33, and the disc plate 1 is axially fixed.

As the further setting of above-mentioned scheme, be provided with cambered surface 321 laminating valve rod 2 external diameter on the cushion 32, just all be provided with corresponding screw 33 on U type installed part 31, dish board 3 and the cushion 32, after the bolt locking, the rotation of valve rod 2 can drive dish board 3 and eccentrically rotate and seal with disk seat 5, and in the use, when need overhaul, only need open one side pipeline, can dismantle dish board 3 alone from the inlet, maintain the maintenance to the valve pocket inner structure, need not to dismantle valve rod 2 relatively prior art, reduced the dismouting to leak protection seal pair 7, reduced the sealed inefficacy scheduling problem that frequently dismantle and lead to.

By further arranging the above structure, the valve cover structure 4 of the present embodiment includes the cover 41, the sealing member 42, and the grinding piece 43 located at the bottom of the cover 41 and abutting against the end of the valve rod 2, and the grinding piece 43 can buffer the direct abutting friction between the valve rod 2 and the cover 41.

Preferably, the thickness of the pad 32 matches the size of the opening of the U-shaped mounting member 31.

As the further setting of above-mentioned scheme, still be provided with disk seat 5 in the valve body 1, disk seat 5 and 3 assorted seals the partition valve pocket passageway, the valve body 1 inner chamber of disk plate 3 opposite side is greater than the diameter setting of disk plate 3 of disk seat 5, and the setting of lid structure, aim at can make disk plate 3 can follow the inlet and demolish to as shown in FIG. 2, demolish disk plate 3's operation also can be followed the liquid outlet after demolishing disk seat 5 earlier, the operation of dismouting is maintained in a flexible way.

As a further arrangement of the above solution, a leak-proof sealing pair 7 is also arranged between the valve body 1 and the valve rod 2, and the leak-proof sealing pair 7 includes a sealing packing 71, a sealing sleeve 72 and a pressing cover 73.

It will be apparent to those skilled in the art that various modifications and variations can be made to the present utility model without departing from the spirit or scope of the utility model. Thus, it is intended that the present utility model also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.

Claims (6)

1. The utility model provides a high temperature butterfly valve, includes valve body (1), valve rod (2) and dish board (3), its characterized in that: valve rod (2) run through valve body (1) and set up valve gap structure (4) in the bottom of valve body (1), dish board (3) circumference is fixed on valve rod (2), through the inner chamber of valve rod (2) drive rotation seal valve body (1), valve rod (2) are provided with groove face (21) relative dish board (3) department, dish board (3) integrated into one piece has U type installed part (31) and cooperation to set up cushion (32), the opening size of U type installed part (31) and the groove face (21) department diameter phase-match of valve rod (2).

2. A high temperature butterfly valve according to claim 1, wherein: the novel valve is characterized in that an arc surface (321) is arranged on the cushion block (32) to be attached to the outer diameter of the valve rod (2), and corresponding screw holes (33) are formed in the U-shaped mounting piece (31), the disc plate (3) and the cushion block (32).

3. A high temperature butterfly valve according to claim 1, wherein: the valve cover structure (4) comprises a sealing cover (41), a sealing piece (42) and a grinding disc (43) which is positioned at the bottom of the sealing cover (41) and is abutted against the end part of the valve rod (2).

4. A high temperature butterfly valve according to claim 1, wherein: the thickness of the cushion block (32) is matched with the opening size of the U-shaped mounting piece (31).

5. A high temperature butterfly valve according to claim 1, wherein: the valve is characterized in that a valve seat (5) is further arranged in the valve body (1), the valve seat (5) is matched with the disc plate (3) to seal and separate a valve cavity channel, and the inner cavity of the valve body (1) at the other side of the valve seat (5) opposite to the disc plate (3) is larger than the diameter of the disc plate (3).

6. A high temperature butterfly valve according to claim 1, wherein: a leakage-proof sealing pair (7) is further arranged between the valve body (1) and the valve rod (2), and the leakage-proof sealing pair (7) comprises a sealing filler (71), a sealing sleeve (72) and a pressing cover (73).