CN211951592U - Valve body for butterfly valve - Google Patents

Abstract

The utility model discloses a valve body for a butterfly valve, which comprises a mounting flange, a valve body buffer disc, a butterfly valve body, a first butterfly rod installation pipe and a second butterfly rod installation pipe. Both ends of the butterfly valve body are A mounting flange is installed, a first butterfly rod installation pipe is installed on the top of the butterfly valve body, and a second butterfly rod installation pipe is installed at the bottom of the butterfly valve body, and the bottom of the second butterfly rod installation pipe is installed with bearing. The utility model is provided with a valve body buffer disk, and the valve body buffer disk is provided with a first water inlet port, a second water inlet port, an internal buffer cavity and a buffer water outlet, and the fluid passes through the first water inlet port. The port and the second water inlet enter into the internal buffer cavity, so that the fluid will be hedged inside the internal buffer cavity. The mutual impact of the fluids can effectively reduce the fluid flow rate and reduce the impact force of the fluid, which not only can effectively play a buffering effect, but also can effectively reduce the impact force of the fluid. It can avoid the wear of the butterfly valve disc caused by the large impact force of the fluid.

Description

A valve body for a butterfly valve

technical field

The utility model relates to the technical field of butterfly valves, in particular to a valve body for a butterfly valve.

Background technique

Butterfly valve, also known as flap valve, is a kind of regulating valve with simple structure. Butterfly valve that can be used for on-off control of low-pressure pipeline medium means that the closing member (disc or butterfly plate) is a disc, which rotates around the valve shaft to achieve opening and closing. It can be used to control the flow of various types of fluids such as air, water, steam, various corrosive media, mud, oil, liquid metal and radioactive media. It mainly plays the role of cutting off and throttling on the pipeline. The butterfly valve opening and closing part is a disc-shaped butterfly plate, which rotates around its own axis in the valve body to achieve the purpose of opening and closing or adjustment. The valve body is a main component in the butterfly valve, and there are different mechanical According to the manufacturing method, when the existing valve body is in use, the fluid flows into the inside of the valve body. When the fluid flow rate is fast, the fluid is buffered by the butterfly plate. However, when the butterfly plate is in the open and closed state, the contact area between the butterfly plate and the fluid is small. , the buffering effect that can be achieved is limited, and the impact of fluid on the butterfly plate is easy to cause the butterfly plate to wear and reduce the service life of the butterfly plate. It cannot be directly removed from the valve body for replacement, it is inconvenient to connect the valve body to different pipelines, the use is relatively inconvenient, and the applicability of the valve body is also poor.

Utility model content

The purpose of the present invention is to provide a valve body for a butterfly valve, so as to solve the problems raised in the above background technology.

In order to achieve the above purpose, the present utility model provides the following technical scheme: a valve body for a butterfly valve, comprising a mounting flange, a valve body buffer disc, a butterfly valve body, a first butterfly rod installation pipe and a second butterfly rod installation pipe, so Both ends of the butterfly valve body are installed with installation flanges, the top of the butterfly valve body is installed with a first butterfly rod installation pipe, and the bottom of the butterfly valve body is installed with a second butterfly rod installation pipe. A bearing is installed at the bottom of the inside of the rod installation tube, and a butterfly valve butterfly rod is installed inside the bearing, and the butterfly valve butterfly rod passes through the butterfly valve body and extends to the inside of the first butterfly rod installation tube. In the butterfly valve disc, one end of the mounting flange close to the butterfly valve body is provided with a valve body connection slot.

Preferably, four sets of flange fixing holes are evenly arranged inside the mounting flanges, and mounting bolts are installed inside the flange fixing holes, and two sets of mounting nuts are threadedly mounted on the outside of the mounting bolts.

Preferably, a valve body buffer disc is installed inside the butterfly valve body, and an internal buffer cavity is provided at the middle position of the valve body buffer disc, and the valve body buffer disc is symmetrically arranged at one end away from the butterfly valve disc. There is a group of second water inlet ports, and the second water inlet ports are all communicated with the internal buffer cavity, and the valve body buffer disc is provided with a first water inlet port at the middle position of one end of the valve body buffer plate close to the second water inlet port. , and the first water inlet port is communicated with the internal buffer cavity, the end of the valve body buffer disc away from the second water inlet port is provided with a buffer water outlet, and the buffer water outlet is communicated with the internal buffer cavity.

Preferably, flange docking holes are evenly arranged inside the mounting flanges.

Preferably, a sealing rubber ring is provided on the inner side of the first butterfly rod installation tube.

Preferably, an anti-rust layer is provided on the outer side of the butterfly valve body.

Compared with the prior art, the beneficial effect of the present invention is that the valve body for the butterfly valve is provided with a valve body buffer disk, and the valve body buffer disk is provided with a first water inlet port and a second water inlet port. The fluid enters the internal buffer chamber through the first water inlet port and the second water inlet port, so that the fluid will be hedged inside the internal buffer chamber, and the fluid impact can effectively reduce the fluid flow rate. , reduce the impact force of the fluid, which can not only effectively play a buffering effect, but also avoid the wear of the butterfly valve disc caused by the large impact force of the fluid. At the same time, the device is equipped with a mounting flange, mounting bolts and mounting nuts. Unscrew from the outside of the mounting bolt, and then the mounting bolt can be taken out from the flange fixing hole, so that the limit of the mounting bolt to the mounting flange can be released, so that the mounting flange can be removed from the body of the butterfly valve, so that different The large and small mounting flanges are convenient to connect the butterfly valve body to different pipelines, the device is more convenient to use and has strong applicability.

Description of drawings

Fig. 1 is the front sectional schematic diagram of the utility model;

2 is a schematic front view of the utility model;

FIG. 3 is a schematic cross-sectional side view of the mounting flange of the present invention.

In the figure: 1. Mounting flange; 2. The first water inlet port; 3. The second water inlet port; 4. The valve body buffer disc; 5. The butterfly valve body; 6. The first butterfly rod installation pipe; 7. Butterfly valve stem; 8. Mounting bolts; 9. Flange docking holes; 10. Mounting nuts; 11. Flange fixing holes; 12. Internal buffer cavity; 13. Buffer water outlet; 14. Butterfly valve disc; 15 , The second butterfly rod installation pipe; 16, the bearing; 17, the anti-rust layer; 18, the valve body connection slot.

Detailed ways

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the implementations. example. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

1-3, an embodiment provided by the present invention: a valve body for a butterfly valve, comprising a mounting flange 1, a valve body buffer disc 4, a butterfly valve body 5, a first butterfly rod installation pipe 6 and The second butterfly rod installation pipe 15, the two ends of the butterfly valve body 5 are installed with the installation flanges 1, the top of the butterfly valve body 5 is installed with the first butterfly rod installation pipe 6, and the bottom of the butterfly valve body 5 is installed with the second butterfly valve body 5. The butterfly rod installation pipe 15, the bottom of the second butterfly rod installation pipe 15 is installed with a bearing 16, and the inside of the bearing 16 is installed with a butterfly valve butterfly rod 7, the butterfly valve butterfly rod 7 passes through the butterfly valve body 5 and extends to the first butterfly rod Inside the installation pipe 6 and the outer side of the butterfly valve stem 7 is installed a butterfly valve disc 14 , and one end of the installation flange 1 close to the butterfly valve body 5 is provided with a valve body connection slot 18 .

In this implementation:

Further, four sets of flange fixing holes 11 are evenly arranged inside the mounting flange 1, and mounting bolts 8 are installed inside the flange fixing holes 11, and two sets of mounting nuts are threadedly installed on the outside of the mounting bolts 8. 10. Unscrew the mounting nut 10 from the outside of the mounting bolt 8, and then the mounting bolt 8 can be taken out from the flange fixing hole 11, so that the limit of the mounting bolt 8 to the mounting flange 1 can be released, so that the mounting flange 1 It can be removed from the butterfly valve body 5, so that the installation flanges 1 of different sizes can be replaced, and it is convenient to connect the butterfly valve body 5 to different pipelines. The device is more convenient to use and has strong applicability.

Further, a valve body buffer disc 4 is installed inside the butterfly valve body 5 , and an internal buffer cavity 12 is provided at the middle position of the valve body buffer disc 4 , and the valve body buffer disc 4 is away from the end of the butterfly valve disc 14 . A group of second water inlet ports 3 are symmetrically arranged, and the second water inlet ports 3 are all communicated with the internal buffer cavity 12, and a second water inlet port 3 is provided at the middle position of the valve body buffer disc 4 near one end of the second water inlet port 3. A water inlet port 2, and the first water inlet port 2 is communicated with the internal buffer cavity 12, the end of the valve body buffer disc 4 away from the second water inlet port 3 is provided with a buffer water outlet 13, and the buffer water outlet 13 It communicates with the internal buffer cavity 12, and the fluid enters the internal buffer cavity 12 through the first water inlet port 2 and the second water inlet port 3, so that the fluid counteracts in the internal buffer cavity 12, and the mutual impact of the fluids can effectively reduce the fluid flow. The flow rate can reduce the impact force of the fluid, which can not only effectively play a buffering effect, but also avoid the wear of the butterfly valve disc 14 caused by the large impact force of the fluid.

Further, flange docking holes 9 are evenly arranged in the interior of the mounting flange 1, so that the mounting flange 1 can be docked with the pipeline.

Further, the inner side of the first butterfly rod installation pipe 6 is provided with a sealing rubber ring to prevent fluid from leaking out of the first butterfly rod installation pipe 6 and improve the sealing performance.

Further, an anti-rust layer 17 is provided on the outer side of the butterfly valve body 5 to prevent the butterfly valve body 5 from rusting, which is beneficial to prolong the service life of the butterfly valve body 5 .

Working principle: When installing, first place the two sets of mounting flanges 1 on both ends of the butterfly valve body 5, and then make the two ends of the butterfly valve body 5 snap into the valve body connection slots 18 on the mounting flange 1 respectively. Then, insert the mounting bolts 8 into the flange fixing holes 11 on the two sets of mounting flanges 1 at the same time, and tighten the mounting nuts 10 to the outside of the mounting bolts 8, so that the mounting nuts 10 are close to the outside of the mounting flanges 1. , so that the position of the mounting bolts 8 is fixed, and the mounting flange 1 is limited by the mounting bolts 8, and the mounting flange 1 can be installed on the butterfly valve body 5. When in use, the fluid passes through the first water inlet port 2 and the first water inlet port 2. The two water inlet ports 3 enter into the internal buffer cavity 12 , so that the fluid is hedged in the internal buffer cavity 12 . The mutual impact of the fluids can effectively reduce the fluid flow rate and reduce the impact force of the fluid. The buffered fluid passes through the buffer water outlet 13 . Flow into the butterfly valve body 5, which can not only effectively play a buffering effect, but also avoid the wear of the butterfly valve disc 14 caused by the large impact force of the fluid. It is necessary to install the installation flanges 1 of different sizes to connect the butterfly valve body 5 to different pipelines. The installation flange 1 on the butterfly valve body 5 can be replaced. First, unscrew the installation nut 10 from the outside of the installation bolt 8, and then remove the installation bolt 8 from the flange fixing hole 11 to release the installation. Bolts 8 limit the mounting flange 1, and the mounting flange 1 can be replaced by removing the mounting flange 1 from the butterfly valve body 5.

Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, it is still possible to modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Within the spirit and principle of the present utility model, any modifications, equivalent replacements, improvements, etc. made shall be included within the protection scope of the present utility model.

Claims (6)

1. A valve body for a butterfly valve, comprising a mounting flange (1), a valve body buffer disc (4), a butterfly valve body (5), a first butterfly rod installation pipe (6) and a second butterfly rod installation pipe ( 15), characterized in that: both ends of the butterfly valve body (5) are installed with mounting flanges (1), and the top of the butterfly valve body (5) is installed with a first butterfly rod installation pipe (6), And the bottom of the butterfly valve body (5) is installed with a second butterfly rod installation pipe (15), the inner bottom of the second butterfly rod installation pipe (15) is installed with a bearing (16), and the inner part of the bearing (16) is installed There is a butterfly valve stem (7), the butterfly valve stem (7) passes through the butterfly valve body (5) and extends to the inside of the first butterfly stem installation pipe (6), and the butterfly valve stem (7) is installed with a In the butterfly valve disc (14), one end of the mounting flange (1) close to the butterfly valve body (5) is provided with a valve body connection slot (18). 2. The valve body for a butterfly valve according to claim 1, wherein four sets of flange fixing holes (11) are evenly arranged inside the mounting flange (1), and the flange fixing holes ( Mounting bolts (8) are installed on the inside of 11), and two sets of mounting nuts (10) are threadedly mounted on the outside of the mounting bolts (8). 3. A valve body for a butterfly valve according to claim 1, characterized in that: a valve body buffer disc (4) is installed inside the butterfly valve body (5), and the valve body buffer disc (4) An internal buffer cavity (12) is provided at the inner middle position, and a group of second water inlet ports (3) are symmetrically arranged at one end of the valve body buffer disc (4) away from the butterfly valve disc (14). The water inlet ports (3) are all communicated with the internal buffer cavity (12), and a first water inlet port is provided in the middle position of the valve body buffer disc (4) close to one end of the second water inlet port (3). (2), and the first water inlet port (2) is communicated with the internal buffer cavity (12), and the end of the valve body buffer disc (4) away from the second water inlet port (3) is provided with a buffer water outlet (13), and the buffer water outlet (13) communicates with the internal buffer cavity (12). 4 . The valve body for a butterfly valve according to claim 1 , characterized in that: the interior of the mounting flange ( 1 ) is uniformly provided with flange butt holes ( 9 ). 5 . 5 . The valve body for a butterfly valve according to claim 1 , wherein a sealing rubber ring is arranged on the inner side of the first butterfly rod installation pipe ( 6 ). 6 . 6. A valve body for a butterfly valve according to claim 1, characterized in that: an anti-rust layer (17) is provided on the outer side of the butterfly valve body (5).

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