CN218718885U - Manual butterfly valve - Google Patents
Manual butterfly valve Download PDFInfo
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- CN218718885U CN218718885U CN202222965954.9U CN202222965954U CN218718885U CN 218718885 U CN218718885 U CN 218718885U CN 202222965954 U CN202222965954 U CN 202222965954U CN 218718885 U CN218718885 U CN 218718885U
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- valve rod
- butterfly
- valve body
- butterfly plate
- valve
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Abstract
The utility model provides a manual butterfly valve. The manual butterfly valve includes: the manual butterfly valve main body consists of an end cover, a first screw, a first O-shaped ring, a valve body, a sealing ring, a second screw, a fixed pressing plate, a lower valve rod, a butterfly plate, an upper valve rod, a second O-shaped ring, a packing bush, a packing gland, a nut, a bolt, a bracket and a gear box; the butterfly plate is arranged in the inner cavity of the valve body, and the butterfly plate and the valve body are fixedly connected through the lower valve rod and the upper valve rod; the butterfly plate is provided with a sealing groove; the sealing ring is arranged in the sealing groove and is connected with the butterfly plate through a second screw. The utility model provides a manual butterfly valve easy operation can improve the life after the product maintenance, can also solve filler department seepage simultaneously, needs the maintenance to change filler etc. and the valve rod can appear sinking phenomenon, influences the advantage of the problem of the sealed effect of butterfly valve.
Description
Technical Field
The utility model belongs to the technical field of the butterfly valve, especially, relate to a manual butterfly valve.
Background
Butterfly plates of butterfly valves (Manualbutterfly) are installed in the diameter direction of the pipeline. In the cylindrical channel of the butterfly valve body, the disc-shaped butterfly plate rotates around the axis at a rotation angle of 0-90 degrees, and when the disc-shaped butterfly plate rotates to 90 degrees, the valve is in a full-open state; the butterfly valve opening and closing part is a disc-shaped butterfly plate, and rotates around the axis of the butterfly plate in the valve body, so that the valve which is opened, closed or adjusted is called a butterfly valve, the butterfly valve is normally less than 90 degrees when being opened to the full close, the butterfly valve and a butterfly rod have no self-locking force, for the positioning of the butterfly plate, a worm gear reducer is required to be additionally arranged on a valve rod, the worm gear reducer is adopted, the butterfly plate can have self-locking capacity, the butterfly plate is stopped at any position, the operation performance of the valve can be improved, for example, the characteristics of an industrial special butterfly valve can resist high temperature, the applicable pressure range is also higher, the nominal diameter of the valve is large, the valve body is made of carbon steel, a sealing ring of a valve plate replaces a rubber ring, and the large-scale high-temperature butterfly valve is made of steel plates by welding and is mainly used for a smoke duct and a gas pipeline of high-temperature media;
however, two problems often occur in the use process of the large-caliber soft sealing butterfly valve with the traditional structure in the market, one is leakage at the filler part, the filler needs to be maintained and replaced and the like; the other is that the valve rod can sink to influence the sealing effect of the butterfly valve.
Therefore, there is a need to provide a new manual butterfly valve to solve the above technical problems.
SUMMERY OF THE UTILITY MODEL
The utility model provides a technical problem provide an easy operation can improve the life after the product maintenance, can also solve filler department seepage simultaneously, need the maintenance to change filler etc. and the valve rod can appear sinking phenomenon, influences the manual butterfly valve of the problem of the sealed effect of butterfly valve.
In order to solve the technical problem, the utility model provides a manual butterfly valve includes: the manual butterfly valve comprises a manual butterfly valve main body, a first screw, a first O-shaped ring, a valve body, a sealing ring, a second screw, a fixed pressing plate, a lower valve rod, a butterfly plate, an upper valve rod, a second O-shaped ring, a packing bushing, a packing gland, a nut, a bolt, a support and a gear box;
the butterfly plate is arranged in the inner cavity of the valve body, and the butterfly plate and the valve body are fixedly connected through the lower valve rod and the upper valve rod;
the butterfly plate is provided with a sealing groove;
the sealing ring is arranged in the sealing groove, the sealing ring is connected with the butterfly plate through a second screw, and one side of the sealing ring extends out of the sealing groove and is connected with the fixed pressing plate;
the valve body is provided with an upper valve rod hole, the upper valve rod hole is provided with a second sliding bearing, the upper valve rod hole is provided with a filler hole, the filler bushing is arranged on the filler hole, the valve body and the filler bushing are sealed through a second O-shaped ring, and the valve body is connected with the filler bushing through threads;
the butterfly plate is provided with a first mounting hole, the butterfly plate is provided with a second mounting hole, and the first mounting hole and the second mounting hole are both provided with positioning pins;
the upper valve rod penetrates through the packing bushing and the upper valve rod hole and is connected with the first mounting hole in the butterfly plate, and the upper valve rod is fixedly connected with the butterfly plate through a positioning pin;
four groups of fillers are arranged between the filler bushing and the upper valve rod, and the filler bushing and the upper valve rod are sealed through the four groups of fillers;
the packing gland is arranged on the packing, the packing is compressed and sealed through the packing gland, and the packing gland and the valve body are fixedly connected through two bolts and two nuts;
the gear box penetrates through the upper valve rod and is connected with the valve body, and the valve body and the gear box are connected and fixed through a support;
the valve body is provided with a lower valve rod hole;
the lower valve rod penetrates through a lower valve rod hole to be connected with a second mounting hole in the butterfly plate, the lower valve rod and the butterfly plate are fixedly connected through a positioning pin, and a first sliding bearing is mounted between the lower valve rod and the lower valve rod hole;
the end cover is hermetically arranged on the end face of the lower valve rod of the valve body through two first O-shaped rings, and the end cover and the valve body are fixed through a first screw with a spring gasket;
the valve body, the end cover, the bracket and the butterfly plate are all made of nodular cast iron;
the material of the filler bushing is copper alloy;
the sealing ring is made of NBR;
the bottom end of the lower valve rod is step-shaped, and the end cover props against the bottom end of the lower valve rod.
As a further proposal of the utility model, the material of the lower valve rod and the upper valve rod is stainless steel.
Compared with the prior art, the utility model provides a manual butterfly valve has following beneficial effect:
1. the utility model can not only automatically lock the butterfly valve, but also change the working performance of the butterfly valve and more accurately adjust the medium flow;
2. the utility model can prevent the lower valve rod from sinking in the long-time use process;
3. the utility model discloses destroy O type circle when can preventing to install the packing bush, can prevent that water from getting into, lead to the upper portion screw thread to rust, simultaneously, when having the filler damage in the use, take out the packing bush together with the filler, need not use instruments such as hooks to go to draw the filler, cause and can prevent to damage valve rod smooth finish in the operation in-process, improve the life after the product maintenance.
Drawings
In order to facilitate understanding for those skilled in the art, the present invention will be further described with reference to the accompanying drawings.
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is an enlarged view of the section K in FIG. 1;
fig. 3 is an enlarged schematic view of a portion H in fig. 1.
In the figure: 1. an end cap; 2. a first screw; 3. a first O-ring; 4. a first sliding bearing; 5. a valve body; 6. a seal ring; 7. a second screw; 8. fixing the pressing plate; 9. positioning pins; 10. a lower valve stem; 11. a butterfly plate; 12. an upper valve stem; 13. a second sliding bearing; 14. a filler; 15. a second O-ring; 16. a filler bushing; 17. a packing gland; 18. a nut; 19. a bolt; 20. a support; 21. a gear box.
Detailed Description
Please refer to fig. 1, fig. 2 and fig. 3 in combination, wherein fig. 1 is a schematic structural diagram of the present invention; FIG. 2 is an enlarged schematic view of the section K in FIG. 1; fig. 3 is an enlarged schematic view of a portion H in fig. 1. The manual butterfly valve includes: the manual butterfly valve comprises a manual butterfly valve body, a valve body and a control device, wherein the manual butterfly valve body consists of an end cover 1, a first screw 2, a first O-shaped ring 3, a valve body 5, a sealing ring 6, a second screw 7, a fixed pressing plate 8, a lower valve rod 10, a butterfly plate 11, an upper valve rod 12, a second O-shaped ring 15, a packing bush 16, a packing gland 17, a nut 18, a bolt 19, a support 20 and a gear box 21;
the butterfly plate 11 is arranged in an inner cavity of the valve body 5, and the butterfly plate 11 and the valve body 5 are fixedly connected through a lower valve rod 10 and an upper valve rod 12;
the butterfly plate 11 is provided with a sealing groove;
the sealing ring 6 is arranged in the sealing groove, the sealing ring 6 is connected with the butterfly plate 11 through a second screw 7, and one side of the sealing ring 6 extends out of the sealing groove and is connected with the fixed pressing plate 8;
an upper valve rod hole is formed in the valve body 5, a second sliding bearing 13 is arranged on the upper valve rod hole, a packing hole is formed in the upper valve rod hole, a packing bush 16 is arranged on the packing hole, the valve body 5 and the packing bush 16 are sealed through a second O-shaped ring 15, and the valve body 5 and the packing bush 16 are connected through threads;
the function is as follows:
(1) Prevent damage to the O-ring when installing the packing bushing 16;
(2) Prevent water from entering, causing upper threads to rust;
(3) When the packing 14 is damaged in use, as shown in fig. 2, the packing bushing 16 is taken out together with the packing 14 without using a tool such as a hook to scrape out the packing 14, so that the surface smoothness of the upper valve rod 12 can be prevented from being damaged in operation, and the service life of the product after maintenance can be prolonged.
A first mounting hole is formed in the butterfly plate 11, a second mounting hole is formed in the butterfly plate 11, and positioning pins 9 are arranged in the first mounting hole and the second mounting hole;
the upper valve rod 12 penetrates through the packing bush 16 and the upper valve rod hole and is connected with a first mounting hole on the butterfly plate 11, and the upper valve rod 12 and the butterfly plate 11 are fixedly connected through a positioning pin 9;
four groups of packing 14 are arranged between the packing bush 16 and the upper valve rod 12, and the packing bush 16 and the upper valve rod 12 are sealed through the four groups of packing 14;
the packing gland 17 is arranged on the packing 14, the packing 14 is compressed and sealed through the packing gland 17, and the packing gland 17 and the valve body 5 are fixedly connected through two bolts 19 and two nuts 18;
the gear box 21 penetrates through the upper valve rod 12 to be connected with the valve body 5, and the valve body 5 and the gear box 21 are fixedly connected through a support 20;
a lower valve rod hole is formed in the valve body 5;
the lower valve rod 10 penetrates through a lower valve rod hole to be connected with a second mounting hole in the butterfly plate 11, the lower valve rod 10 and the butterfly plate 11 are fixedly connected through a positioning pin 9, and a first sliding bearing 4 is mounted between the lower valve rod 10 and the lower valve rod hole;
the end cover 1 is hermetically arranged at the end face of a lower valve rod 10 of the valve body 5 through two first O-shaped rings 3, and the end cover 1 and the valve body 5 are fixed through a first screw 2 with a spring gasket;
the valve body 5, the end cover 1, the support 20 and the butterfly plate 11 are all made of nodular cast iron;
the material of the filler bush 16 is copper alloy;
the sealing ring 6 is made of NBR;
the function of the valve is to prevent the lower valve rod 10 from sinking in the long-term use process.
The bottom end of the lower valve rod 10 is step-shaped, and the end cover 1 props against the bottom end of the lower valve rod 10.
The material of the lower valve rod 10 and the upper valve rod 12 is stainless steel.
The utility model provides a manual butterfly valve's theory of operation as follows:
the first step is as follows: according to a hand wheel on a rotary gear box 21, a butterfly plate 11 is driven to rotate, in a cylindrical channel of a valve body 5, the butterfly plate 11 rotates around a lower valve rod 10 and an upper valve rod 12, the butterfly plate 11 is mainly rotated by 90 degrees, when the butterfly plate 11 reaches 90 degrees, the valve is completely opened, and the medium flow can be adjusted by changing the angle of the valve;
the second step is as follows: the lower valve rod 10 and the upper valve rod 12 are not locked in the diameter direction of the pipeline, so that the gear box 21 with a worm reducer is needed to effectively control the flow, and the gear box with the worm reducer is installed, so that the butterfly valve 21 not only can automatically lock the butterfly valve, but also can change the working performance of the butterfly valve and more accurately adjust the flow of the medium.
It should be noted that the device structure and the accompanying drawings of the present invention mainly describe the principle of the present invention, and in the design principle, the settings of the power mechanism, the power supply system, the control system, etc. of the device are not completely described, and on the premise that the skilled person understands the principle of the present invention, the details of the power mechanism, the power supply system, and the control system can be clearly known, the control mode of the application file is automatically controlled by the controller, and the control circuit of the controller can be realized by simple programming of the skilled person in the art;
the standard parts used in the method can be purchased from the market, and can be customized according to the description of the specification and the description of the attached drawings, the specific connection mode of each part adopts conventional means such as mature bolts, rivets, welding and the like in the prior art, the machinery, parts and equipment adopt conventional models in the prior art, and the structure and the principle of the parts are known by technical manuals or conventional experimental methods for technicians in the field.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, and it is intended that the scope of the invention be defined by the appended claims and their equivalents and that all such modifications are intended to be encompassed by the scope of the invention as defined in the claims.
Claims (2)
1. A manual butterfly valve, comprising:
the manual butterfly valve comprises a manual butterfly valve body, a first screw, a first O-shaped ring, a valve body, a sealing ring, a second screw, a fixed pressing plate, a lower valve rod, a butterfly plate, an upper valve rod, a second O-shaped ring, a packing bush, a packing gland, a nut, a bolt, a support and a gear box;
the butterfly plate is arranged in an inner cavity of the valve body, and the butterfly plate and the valve body are fixedly connected through the lower valve rod and the upper valve rod;
the butterfly plate is provided with a sealing groove;
the sealing ring is arranged in the sealing groove, the sealing ring is connected with the butterfly plate through a second screw, and one side of the sealing ring extends out of the sealing groove and is connected with the fixed pressing plate;
the valve body is provided with an upper valve rod hole, a second sliding bearing is arranged on the upper valve rod hole, a filler hole is formed in the upper valve rod hole, the filler bushing is arranged on the filler hole, the valve body and the filler bushing are sealed through a second O-shaped ring, and the valve body is connected with the filler bushing through threads;
the butterfly plate is provided with a first mounting hole, the butterfly plate is provided with a second mounting hole, and the first mounting hole and the second mounting hole are both provided with positioning pins;
the upper valve rod penetrates through the packing bushing and the upper valve rod hole and is connected with the first mounting hole in the butterfly plate, and the upper valve rod is fixedly connected with the butterfly plate through a positioning pin;
four groups of fillers are arranged between the filler bushing and the upper valve rod, and the filler bushing and the upper valve rod are sealed through the four groups of fillers;
the packing gland is arranged on the packing, the packing is compressed and sealed through the packing gland, and the packing gland and the valve body are fixedly connected through two bolts and two nuts;
the gear box penetrates through the upper valve rod and is connected with the valve body, and the valve body and the gear box are connected and fixed through a support;
the valve body is provided with a lower valve rod hole;
the lower valve rod penetrates through a lower valve rod hole to be connected with a second mounting hole in the butterfly plate, the lower valve rod and the butterfly plate are fixedly connected through a positioning pin, and a first sliding bearing is mounted between the lower valve rod and the lower valve rod hole;
the end cover is hermetically arranged on the end face of the lower valve rod of the valve body through two first O-shaped rings, and the end cover and the valve body are fixed through a first screw with a spring gasket;
the valve body, the end cover, the support and the butterfly plate are all made of nodular cast iron;
the material of the filler bushing is copper alloy;
the sealing ring is made of NBR;
the bottom end of the lower valve rod is step-shaped, and the end cover props against the bottom end of the lower valve rod.
2. The manual butterfly valve of claim 1, wherein: the lower valve rod and the upper valve rod are made of stainless steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222965954.9U CN218718885U (en) | 2022-11-07 | 2022-11-07 | Manual butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222965954.9U CN218718885U (en) | 2022-11-07 | 2022-11-07 | Manual butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218718885U true CN218718885U (en) | 2023-03-24 |
Family
ID=85609944
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222965954.9U Active CN218718885U (en) | 2022-11-07 | 2022-11-07 | Manual butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218718885U (en) |
-
2022
- 2022-11-07 CN CN202222965954.9U patent/CN218718885U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |