CN214789078U - Hard seal butterfly valve - Google Patents

Abstract

The utility model provides a hard sealing butterfly valve with simple structure and capable of protecting a butterfly valve plate, which comprises a butterfly valve body, a baffle, a valve cover arranged on the butterfly valve body, a water inlet channel and a water outlet channel which are arranged along the radial direction of the butterfly valve body, and a valve plate arranged between the water inlet channel and the water outlet channel and used for controlling the opening and closing of fluid, a valve rod is arranged above the valve plate and inside the butterfly valve body, a first channel is arranged above the butterfly valve body, the lower end part of the valve rod is fixedly connected with the valve plate, the upper end part of the valve rod penetrates through the first channel and is positioned in the valve cover, the two ends of the baffle are fixedly provided with rotating shafts, the baffle can be rotatably arranged on the butterfly valve body through the rotating shafts and is positioned on the water inlet channel, the baffle is located valve plate the place ahead, be equipped with the rotating device who is used for controlling baffle turned angle on the butterfly valve body.

Description

Hard seal butterfly valve

Technical Field

The utility model relates to the technical field of valves, in particular to butterfly valve sealed firmly.

Background

In industrial production, a hard seal butterfly valve is a commonly used valve. However, when the valve plate of the hard seal butterfly valve is opened, due to the scouring of the fluid medium, particularly when the fluid medium contains impurities, the sealing pair on the valve plate is easily damaged when the valve plate is scoured, the sealing performance when the butterfly valve is closed is damaged, and the closing effect of the butterfly valve is influenced.

SUMMERY OF THE UTILITY MODEL

Therefore, to foretell problem, the utility model provides a simple structure, can protect a butterfly valve plate's a butterfly valve seals firmly.

In order to achieve the above object, the technical solution of the present invention is to provide a hard seal butterfly valve, which comprises a butterfly valve body, a valve cover disposed on the butterfly valve body, a water inlet channel and a water outlet channel disposed along the radial direction of the butterfly valve body, and a valve plate disposed between the water inlet channel and the water outlet channel for controlling the opening and closing of a fluid, a valve rod is arranged above the valve plate and inside the butterfly valve body, a second channel is arranged above the butterfly valve body, the lower end part of the valve rod is fixedly connected with the valve plate, the upper end part of the valve rod penetrates through the second channel and is positioned in the valve cover, an opening and closing rod is slidably arranged on the valve cover in a penetrating way, a first bevel gear ring is fixedly arranged on the opening and closing rod and is positioned in the valve cover, and a second bevel gear ring meshed with the first bevel gear ring is fixedly arranged on the valve rod, and a limiting device for limiting the downward sliding of the opening and closing rod is arranged between the valve cover and the opening and closing rod.

The further improvement is that: the limiting device comprises a clamping rod with one telescopic end, a limiting sleeve is fixedly arranged on the valve cover, the clamping is arranged in the limiting sleeve in a penetrating mode, one end of the limiting sleeve penetrates out of the limiting sleeve, a clamping groove clamped with the clamping rod is formed in the opening and closing rod, a second channel for enabling the telescopic end of the clamping rod to extend out of the valve cover is formed in the valve cover, an elastic device for enabling the clamping rod to be automatically clamped into the clamping groove is further arranged in the limiting sleeve, and a sealing device for sealing the clamping rod in the valve cover is further arranged on the valve cover.

The further improvement is that: the elastic device comprises a return spring, a stop block is arranged on the clamping rod in a surrounding mode and is located in the limit sleeve, the return spring is sleeved on the clamping rod, one end of the return spring is abutted to the limit sleeve, and the other end of the return spring is abutted to the stop block.

The further improvement is that: the sealing device is a sealing bolt, the sealing bolt is rotatably arranged on the telescopic end of the clamping rod through a bearing, and the sealing bolt is in threaded connection with the inner wall of the second channel of the valve cover to seal the second channel.

The further improvement is that: the valve comprises a valve cover and a starting and closing rod, wherein the valve cover is provided with a sliding groove, the starting and closing rod is sleeved with a rotating bearing, the rotating bearing is located in the sliding groove, and the valve cover is provided with a limiting device used for limiting the radial rotation of a rotating bearing body.

The further improvement is that: the limiting device is characterized in that the valve cover is fixedly provided with a sliding rail in the sliding groove, and the rotating bearing is provided with a sliding groove clamped with the sliding rail.

The further improvement is that: and a rotating hand wheel is fixedly arranged on the opening and closing rod and is positioned outside the valve cover.

The utility model has the advantages and the beneficial effects that:

1. simple structure and convenient use. Through being provided with baffle and can be along with the random angle of adjustment of valve plate, make the baffle be located the place ahead of valve plate all the time and block the erodeing of fluid medium for the valve plate, effectively reduced the erodeing of fluid medium to the valve plate, reduced the destruction of sealed pair on the valve plate, improve the life of valve plate, make the valve plate have good leakproofness for a long time.

2. The baffle is arc form, can improve the life of baffle, reduces the washing away of fluid medium to the baffle.

3. The observation chamber can make the better rotation of baffle preceding to the valve plate, makes things convenient for the staff to operate.

Drawings

Fig. 1 is the embodiment of the present invention, which is a schematic view of a split structure of a hard seal butterfly valve.

Fig. 2 is an enlarged schematic structural diagram of embodiment a of the present invention.

Detailed Description

The following description will further describe embodiments of the present invention with reference to the accompanying drawings and examples. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.

As shown in fig. 1-2, a hard seal butterfly valve comprises a butterfly valve body 1, a baffle 7, a valve cover 4 disposed on the butterfly valve body 1, a water inlet channel 2 and a water outlet channel 3 radially disposed along the butterfly valve body 1, and a valve plate 5 disposed between the water inlet channel 2 and the water outlet channel 3 for controlling opening and closing of a fluid, wherein a valve rod 6 is disposed above the valve plate 5 and inside the butterfly valve body 1, a first channel is disposed above the butterfly valve body 1, a lower end of the valve rod 6 is fixedly connected to the valve plate 5, an upper end of the valve rod 6 penetrates through the first channel and is disposed in the valve cover 4, rotation shafts 9 are fixedly disposed at two ends of the baffle 7, the baffle 7 is rotatably disposed on the butterfly valve body 1 and located in the water inlet channel 2 through the rotation shafts 9, the baffle 7 is disposed in front of the valve plate 5, and a rotating device for controlling a rotation angle of the baffle 7 is disposed on the butterfly valve body 1, the rotating device comprises a gear 10, a second channel 8 is arranged at the upper end of the butterfly valve body 1, the rotating shaft 9 is arranged in the second channel 8 in a penetrating manner, the gear 10 is fixedly sleeved on the rotating shaft 9, a fixed block 12 is fixedly arranged on the inner wall of the second channel 8, a push rod 11 is slidably arranged on the fixed block 12 in a penetrating manner, a straight gear meshed with the gear 10 is arranged on the push rod 11, a driving device used for driving the straight gear to slide is further arranged in the second channel 8, the driving device comprises an eccentric cam 15, the eccentric cam 15 is rotatably arranged in the second channel 8 through a rotating handle 16, the eccentric cam 15 can resist against the other end of the push rod 11, the other end of the rotating handle 16 penetrates out of the butterfly valve body 1 and is positioned outside the butterfly valve body 1, and a bulge 13 with an arc-shaped bulge 13 is fixedly arranged on the push rod 11, the push rod 11 is sleeved with a return spring 14, one end of the return spring 14 is fixedly connected with the protrusion 13, and the other end of the return spring 14 is fixedly connected with the fixed block 12.

In order to improve the service life of the baffle 7 and reduce the scouring of the fluid medium on the baffle 7, the baffle 7 is an arc-shaped baffle 7.

In order to accurately rotate the baffle 7 to the front of the valve plate 5, the butterfly valve body 1 is provided with a transparent observation chamber (not shown in the figure) on the water inlet channel 2.

In order to facilitate the rotation of the turning handle 16, a turning hand wheel 17 is fixedly arranged on the turning handle 16.

The working principle is as follows:

when the valve plate 5 of the butterfly valve is opened by a certain angle, the rotating hand wheel 17 is rotated, the rotating hand wheel 17 drives the rotating handle 16 to rotate, and then the eccentric cam 15 is driven to rotate, the eccentric cam 15 rotates to resist against the push rod 11, the push rod 11 is pushed to slide, when the push rod 11 slides, the straight teeth row on the push rod 11 is meshed with the gear 10 for transmission, the gear 10 is driven to rotate, and then the rotating shaft 9 is driven to rotate, the rotating shaft 9 rotates to drive the baffle 7 to rotate, and at the moment, the reset spring 14 is compressed. When the valve plate 5 returns, the hand wheel 17 continues to be rotated, the eccentric cam 15 rotates, the push rod 11 is resisted with the edge close to the eccentric cam 15, the return spring 14 returns to push the push rod 11 to return, at the moment, the straight gear row on the push rod 11 is meshed with the gear 10 for transmission, the gear 10 rotates reversely, the rotating shaft 9 is driven to rotate reversely, the baffle 7 is driven to rotate reversely, and the baffle 7 returns along with the valve plate 5. Finally, the staff observes whether the baffle 7 is matched with the valve plate 5 or not through the observation chamber, so that the valve plate 5 is protected from being vigorously washed by fluid media, and the service life of the valve plate 5 is prolonged.

Having shown and described the basic principles and essential features of the invention and its advantages, it will be understood by those skilled in the art that the present invention is not limited by the embodiments described above, which are merely illustrative of the principles of the invention, but is susceptible to various changes and modifications without departing from the spirit and scope of the invention, all of which are intended to be covered by the appended claims and their equivalents.

Claims (7)

1. The utility model provides a butterfly valve sealed firmly, include the butterfly valve body, set up in valve gap on the butterfly valve body, along radial inhalant canal and the exhalant canal of seting up of butterfly valve body, set up in inhalant canal with be used for controlling the valve plate that the fluid opened and close between the exhalant canal, the valve plate top is located the inside valve rod that is equipped with of butterfly valve body, first passageway has been seted up to butterfly valve body top, the lower tip of valve rod with valve plate fixed connection, wear out the valve rod upper end first passageway is located in the valve gap, its characterized in that: the butterfly valve is characterized by further comprising a baffle which is matched with the valve plate, rotating shafts are fixedly arranged at two ends of the baffle, the baffle is rotatably arranged on the butterfly valve body through the rotating shafts and is located in the water inlet channel, the baffle is located in front of the valve plate, and a rotating device used for controlling the rotating angle of the baffle is arranged on the butterfly valve body.

2. The hard seal butterfly valve of claim 1, wherein: the butterfly valve body is characterized in that a second channel is formed in the upper end of the butterfly valve body, the rotating shaft penetrates through the second channel, a gear is fixedly arranged on the rotating shaft, a fixed block is fixedly arranged on the inner wall of the second channel, a push rod is slidably arranged on the fixed block in a penetrating mode, a straight gear row meshed with the gear is arranged on the push rod, and a driving device used for driving the straight gear row to slide is further arranged in the second channel.

3. A hard seal butterfly valve in accordance with claim 2, wherein: the driving device comprises an eccentric cam 15, the eccentric cam is rotatably arranged in the second channel through a rotating handle, the eccentric cam can resist against the push rod, the other end of the rotating handle penetrates out of the butterfly valve body and is located outside the butterfly valve body, and a return device for returning the straight rack is further arranged on the butterfly valve body.

4. A hard seal butterfly valve in accordance with claim 3, wherein: the return device comprises an arc-shaped bulge, the bulge is fixedly arranged on the push rod, a return spring is sleeved on the push rod, one end of the return spring is fixedly connected with the bulge, and the other end of the return spring is fixedly connected with the fixed block.

5. The hard seal butterfly valve of claim 1, wherein: the baffle is an arc baffle.

6. The hard seal butterfly valve of claim 1, wherein: the butterfly valve body is arranged on the water inlet channel and is provided with a transparent observation chamber.

7. A hard seal butterfly valve in accordance with claim 3, wherein: and a rotating hand wheel is fixedly arranged on the rotating handle.

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