CN207989771U - A kind of lock-butterfly combination valve - Google Patents

Abstract

The utility model discloses a gate-butterfly composite valve. It includes lower valve body, upper valve body, valve stem, drive box, valve stem and composite gate. The composite gate is mainly composed of gate sleeve and butterfly plate. The gate sleeve is installed in the flow channel as the valve core of the gate valve. As the valve core of the butterfly valve, the plate is installed in the gate sleeve. The rotating shafts at the upper and lower ends of the butterfly plate are respectively movable and fitted in the through holes opened on the upper and lower side walls of the gate sleeve. The lower end of the valve stem extends into the lower valve body and connects with The top of the butterfly plate in the gate sleeve is fixedly connected; the lower valve body is provided with an active chamber for the compound gate to move up and down, and the active chamber is located above the flow channel and communicated with the flow channel. The valve of the utility model uses the composite gate formed by the gate sleeve and the butterfly plate, and the rotation and opening of the butterfly plate are controlled by the steering sleeve. stream function.

Description

A gate-butterfly composite valve

technical field

The utility model relates to a valve, in particular to a gate-butterfly composite valve.

Background technique

The gate valve is a kind of valve that uses the gate as the opening and closing element, and moves along the vertical direction of the centerline of the flow channel inside the valve to realize the connection and cut-off of the medium flow. The gate valve is used for full opening or full closing on the pipeline, and is generally not used for regulating flow. Butterfly valve, also known as flap valve, is a regulating valve with simple structure. Its closing part (disc or butterfly plate) is a disc, which rotates around the valve shaft to achieve opening and closing. It can be used for switch control of low-pressure pipeline media. The butterfly valve is used as a regulating valve, and the butterfly plate is always located in the flow channel, which will produce resistance to the fluid medium. There are more and more engineering application scenarios for valves, and the functional requirements for valves are getting higher and higher. Composite valves that combine the functional advantages of butterfly valves and gate valves will adapt to and satisfy more applications. Patent No. CN201410216273.X discloses a butterfly-gate throttle valve, which realizes opening and closing through the misalignment of the throttle hole and the through hole of the gate plate, and a butterfly valve is arranged on the top of the throttle plate. CN200420117252.4 discloses a butterfly gate combination valve, which is formed by installing a butterfly valve at the front of the gate valve pipeline.

Most of the valves currently used are single-function valves, with limited application occasions, and complex working conditions are likely to cause them to fail. In the above-mentioned butterfly-gate throttle valve of CN201410216273.X, a throttle plate is arranged in the flow channel, which will cause excessive resistance of the valve. CN200420117252.4 discloses a butterfly gate combined valve, simply adding a butterfly valve at the front of the gate valve pipeline. Both are simple combinations of valves, and the advantages of the two valves are not well compounded.

Utility model content

In order to overcome the shortcomings of the existing single valve function, expand the working conditions of the valve application and prolong the service life of the valve, the purpose of the utility model is to provide a gate-butterfly valve that realizes the compound function of the butterfly valve and the gate valve through the butterfly-gate composite gate plate. Composite valve.

The technical scheme that the utility model adopts is:

The utility model includes a lower valve body, an upper valve body, a valve stem and a drive box. The lower valve body is provided with a flow channel, the upper valve body is connected to the upper end of the lower valve body, and the lower end of the valve stem passes through the upper valve body and extends into the lower valve body. , the upper end of the valve stem passes through the upper valve body and is connected to the drive box, including the valve stem and the composite gate. The composite gate is mainly composed of a gate sleeve and a butterfly plate. The gate sleeve is installed in the flow channel as the valve core of the gate valve. , the butterfly plate is installed in the gate sleeve as the butterfly valve core, the rotating shafts at the upper and lower ends of the butterfly plate are respectively movable and fitted in the through holes opened on the upper and lower side walls of the gate sleeve, and the lower end of the valve stem extends into the lower valve body Finally, it is fixedly connected with the top of the butterfly plate in the gate sleeve; the lower valve body is provided with an active chamber for the compound gate to move up and down, and the active chamber is located above the flow channel and communicated with the flow channel.

A steering sleeve is provided between the valve stem and the upper valve body, the steering sleeve is set in the through hole of the upper valve body, the valve stem is set in the steering sleeve, and one side of the outer wall of the valve stem is provided with a valve parallel to the valve stem. For the protruding line itself, a bar-shaped groove parallel to the valve stem is provided on one side of the inner wall of the steering sleeve, and the protruding bar is embedded in the bar-shaped groove to form a sliding pair.

Limiting blocks are provided on both sides of the inner wall of the gate sleeve, and the two limiting blocks are arranged on the symmetrical sides of the closed position of the butterfly plate, so that the butterfly plate can only rotate within a range of 180 degrees.

The upper valve body and the lower valve body are fixedly connected by fastening bolts and fastening nuts through a flange structure to form a complete valve body.

The upper valve body is mounted on the upper part of the movable chamber of the lower valve body.

When the gate is closed, the outer wall of the gate sleeve is in sealing connection with the inner wall of the lower valve body flow channel.

When the butterfly plate is closed, the butterfly plate is in sealing connection with the inner wall of the ram sleeve, and the rotating shafts at the upper and lower ends of the butterfly plate are in sealing connection with the through holes on the upper and lower side walls of the ram sleeve.

The valve of the utility model has a gate-butterfly composite gate composed of a gate sleeve and a butterfly plate, integrates a gate valve and a butterfly valve, has the dual functions of cut-off and throttling, and has the advantages of the two valves.

The composite gate of the utility model is composed of a gate sleeve and a butterfly plate, and the butterfly plate is located in the gate sleeve and positioned by the gate sleeve.

The steering sleeve of the utility model controls the rotation and opening of the butterfly plate, and the steering sleeve drives the valve stem to make the butterfly plate in the gate sleeve rotate, open and close, and realize the function of the butterfly valve. Turning the steering sleeve can close the butterfly valve and raise the gate at the same time. There is no structure in the valve channel to increase the resistance of the valve.

The valve rod of the utility model is divided into two parts, the upper part is driven by the drive box to move up and down, and can be driven by a rack and pinion. Drive the steering, make the butterfly plate rotate, and realize the function of the butterfly valve.

The beneficial effects of the utility model are:

When the valve is opened, there is no butterfly plate and fixed structure in the flow channel of the valve to block the flow, so the flow effect is better.

When the valve is closed, the rotation and opening of the butterfly plate can be controlled by the steering sleeve to realize the functions of throttling and quick opening, which makes up for the disadvantage that the gate valve cannot adjust the flow.

The utility model realizes the combination of the functional advantages of the butterfly valve and the gate valve through the composite butterfly-gate composite gate plate. The valve structure is simple, and the application scene of the valve is increased. When one valve fails to open and fails, it does not affect the use of the other function, extending the valve service life.

The valve of the utility model uses the composite gate formed by the gate sleeve and the butterfly plate, and the rotation and opening of the butterfly plate are controlled by the steering sleeve. The dual function of the stream.

Description of drawings

Fig. 1 is a cross-sectional view of the gate-butterfly composite valve of the present invention when it is closed.

Fig. 2 is an assembly drawing of the steering sleeve and the valve stem of the gate-butterfly composite valve of the present invention.

Fig. 3 is a structural diagram of the gate sleeve of the gate-butterfly composite valve of the present invention.

Fig. 4 is a structural diagram of the butterfly plate of the gate-butterfly compound valve of the present invention.

Fig. 5 is a schematic diagram of the position of the gate structure when the butterfly valve of the present invention is opened.

In Figure 1: 1. Lower valve body, 2. Upper valve body, 3. Drive box, 4. Steering sleeve, 5. Fastening bolt, 6. Fastening nut, 7. Valve stem, 8. Gate sleeve , 9. butterfly plate, 10. limit block.

Detailed ways

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

As shown in Figure 1, the utility model includes a lower valve body 1, an upper valve body 2, a valve stem 7, a drive box 3, a valve stem 7 and a composite gate, and the lower valve body 1 and the upper valve body 2 are installed up and down to form a complete valve body. The lower valve body 1 is provided with a horizontal flow channel, the upper valve body 2 is connected to the upper end of the lower valve body 1, and the upper valve body 2 and the lower valve body 1 are fixed by fastening bolts 5 and fastening nuts 6 through the flange structure. Connected into a complete valve body. The lower end of valve rod 7 passes through upper valve body 2 and stretches into lower valve body 1 inside, and the upper end of valve rod 7 passes through upper valve body 2 and is connected with drive box 3 . The composite gate is mainly composed of a gate sleeve 8 and a butterfly plate 9. The gate sleeve 8 is installed in the flow channel as a gate valve core, and the butterfly plate 9 is installed in the gate sleeve 8 as a butterfly valve core. The gate sleeve Rotatable butterfly plate 9 is housed in the middle of 8.

As shown in Figure 4, the butterfly plate 9 is mainly composed of a circular plate and a rotating shaft 9A arranged in the middle of the circular plate. In the through hole 8A provided on the upper and lower side walls of the sleeve 8, as shown in Figure 5, the lower end of the valve stem 7 extends into the lower valve body 1 and is fixedly connected with the top of the butterfly plate 9 in the gate sleeve 8, that is, the butterfly plate 9 The rotating shaft at the upper end passes through the through hole on the upper side wall of the gate sleeve 8 and is fixedly connected with the lower end of the valve stem 7 . The lower valve body 1 is provided with an active chamber for the compound gate to move up and down. The upper valve body 2 is installed on the upper part of the movable chamber of the lower valve body 1. The active chamber is located above the flow channel and communicates with the flow channel. The drive box 3 drives the valve stem. 7 moves up and down, and then drives the compound gate composed of butterfly plate 9 and gate sleeve 8 to move up and down in the movable chamber and flow channel, and controls the closing and opening of the gate valve.

As shown in Figure 2, a steering sleeve 4 is provided between the valve stem 7 and the upper valve body 2, the steering sleeve 4 is set in the through hole of the upper valve body 2, the valve stem 7 is set in the steering sleeve 4, and the valve One side of the outer wall of the rod 7 is provided with a convex strip 7A parallel to the valve stem 7 itself, and one side of the inner wall of the steering sleeve 4 is provided with a strip-shaped groove 4A parallel to the valve stem 7, and the convex strip 7A is embedded into the strip-shaped groove 4A to form Sliding pair: Rotate the steering sleeve 4 to drive the valve stem 7 to rotate through the embedded positioning between the raised strip 7A and the strip groove 4A, thereby realizing the opening and closing of the butterfly plate 9 .

As shown in Figure 3, limit blocks 10 are provided on both sides of the inner wall of the gate sleeve 8, and the two limit blocks 10 are arranged on both sides of the symmetrical sides of the closed position of the butterfly plate 9, so that the butterfly plate 9 can only rotate within a range of 180 degrees , locate and limit the exact position of the butterfly plate 9 when it is closed and the limit position of the opening of the butterfly plate 9 in the gate sleeve 8 .

The wake-up position of butterfly plate 9 is closed, and is positioned at the vertical position with the position as accompanying drawing 5.

When the butterfly plate 9 is opened, as shown in Figure 5, it is the structural diagram of the composite butterfly plate when the butterfly plate is opened to the maximum opening. At this time, the limit block 10 limits the limit position of the butterfly plate opening. The flow rate of the valve realizes the function of a butterfly valve.

When the gate is closed, the outer wall of the gate sleeve 8 is in sealing connection with the inner wall of the flow passage of the lower valve body 1 . When the butterfly plate is closed, the butterfly plate 9 and the inner wall of the gate sleeve 8 are sealed and connected, and the rotating shafts at the upper and lower ends of the butterfly plate 9 are in sealing connection with the through holes on the upper and lower side walls of the gate sleeve 8 .

Working principle and working process of the present utility model are as follows:

When the valve is closed, the driving box 3 controls the composite gate plate to move up and down through the valve stem 7 to control the closing and opening of the valve. The open position of the butterfly plate 9 is the closed position, and the closed position is that the circular plate is arranged perpendicular to the direction of the flow channel. The hand wheel connected to one end of the drive box 3 drives the composite gate to move up and down to realize the opening and closing of the gate valve and the opening of the gate valve. and truncation function.

When the valve needs to be opened quickly, turn the steering sleeve 4, and the steering sleeve 4 drives the valve stem 7 to realize the rotation of the butterfly plate 9, adjust the flow rate, and realize the throttling adjustment function. The opening of the butterfly plate is determined by the rotation of the steering sleeve 4. The angle is determined, and the limit position of the butterfly plate 9 is limited by the limit block 10 on the steering sleeve 4 . After turning the steering sleeve 4 to close the butterfly valve 9, the gate plate is raised again, and there is no structure in the valve flow path to increase the valve resistance.

When the gate sleeve 8 is rusted and fails after long-term use under the up and down movement of the lower valve body flow channel and the movable chamber, the gate sleeve 8 cannot be raised. In this case, the butterfly valve function can also be performed by rotating the butterfly plate 9. use.

When the butterfly plate 9 is rusted and fails after long-term use under the rotary movement in the flow channel of the lower valve body, the butterfly plate 9 cannot be opened. In this case, the gate valve function can also be used by the gate sleeve 8 moving up and down.

This gate-butterfly composite valve integrates gate valve and butterfly valve, combines the advantages of the two valves, has the functions of cut-off and throttling, increases the application places of the valve, shares the pressure of opening and closing adjustment, and prolongs the service life of the valve.

Claims (7)

1. a kind of lock-butterfly combination valve, including lower valve body (1), upper valve body (2), valve rod (7) and driving box (3), lower valve body (1) Interior to be equipped with runner, upper valve body (2) is connected to lower valve body (1) upper end, and valve rod (7) lower end extend into lower valve body across upper valve body (2) (1) internal, valve rod (7) upper end is pierced by upper valve body (2) and is connect afterwards with driving box (3), it is characterised in that：Further include valve rod (7) and Compound flashboard, compound flashboard are mainly made of flashboard sleeve (8) and butterfly plate (9), and flashboard sleeve (8) is as valve core for gate valve mounted in stream In road, for butterfly plate (9) as butterfly valve core in flashboard sleeve (8), the rotary shaft (9A) of butterfly plate (9) upper and lower ends is equipped with difference Movable set in the through-hole (8A) that flashboard sleeve (8) top and bottom sidewall opens up, valve rod (7) lower end extend into lower valve body (1) afterwards with Butterfly plate (9) top in flashboard sleeve (8) is fixedly connected；Lower valve body (1) is equipped with the movable chamber moved up and down for compound flashboard, Movable chamber is located above runner and is communicated with runner.

2. a kind of lock-butterfly combination valve according to claim 1, it is characterised in that：The valve rod (7) and upper valve body (2) it is equipped between and turns to sleeve (4), turned to sleeve (4) and be set in the through-hole of upper valve body (2), valve rod (7) is sleeved on turning sleeve In cylinder (4), valve rod (7) outer wall side is equipped with the raised line (7A) for being parallel to valve rod (7) itself, turns to sleeve (4) inner wall side and sets It is parallel to the bar-shaped trough (4A) of valve rod (7), raised line (7A) forms sliding pair in bar-shaped trough (4A).

3. a kind of lock-butterfly combination valve according to claim 1, it is characterised in that：Described flashboard sleeve (8) inner wall two Side is equipped with limited block (10), and two limited blocks (10) are arranged by the symmetrical both sides of butterfly plate (9) closed position so that butterfly plate (9) It can only be rotated in 180 degree range.

4. a kind of lock-butterfly combination valve according to claim 1, it is characterised in that：The upper valve body (2) and lower valve body (1) complete valve body is fixedly connected by flange arrangement fastening bolt (5), fastening nut (6) between.

5. a kind of lock-butterfly combination valve according to claim 1, it is characterised in that：The upper valve body (2) is loaded on lower valve The top of body (1) movable chamber.

6. a kind of lock-butterfly combination valve according to claim 1, it is characterised in that：Flashboard flashboard sleeve when closing (8) outer wall and lower valve body (1) runner inner wall are tightly connected.

7. a kind of lock-butterfly combination valve according to claim 1, it is characterised in that：When butterfly plate is closed the butterfly plate (9) and It is tightly connected between flashboard sleeve (8) inner wall, and the rotary shaft of the butterfly plate (9) upper and lower ends and flashboard sleeve (8) are up and down It is tightly connected between the through-hole of side wall.