CN212055885U - Soft sealing eccentric butterfly valve - Google Patents

Abstract

The utility model discloses a soft-sealing eccentric butterfly valve, which comprises a valve body, a support column is welded on the outer wall of the top of the valve body, a support frame is welded on the outer wall of the top of the support column, and a sealing box is welded on the outer wall of the top of the support frame. The outer wall of one side of the box is rotatably connected with a valve, the outer wall of one side of the valve is welded with a main gear, the outer wall of the top of the main gear is engaged with a driven gear, and the outer wall of one side of the driven gear is welded with a threaded column. The side and outer walls are meshed with a sector gear, the outer wall of the bottom of the sector gear is welded with a rotating column, and the outer wall of the rotating column is slidably connected to the inner wall of the top of the valve seat, and the outer wall of the top of the rotating column is fixed with an upper connecting column by bolts. The side outer wall is welded with butterfly plate. The utility model can reduce the friction between the butterfly plate and the inner wall of the valve body through the rubber sheath, reduce the corrosion of the butterfly plate by the water flow, and enhance the sealing performance of the valve body through the rubber sealing gasket.

Description

Soft Seal Eccentric Butterfly Valve

technical field

The utility model relates to the technical field of eccentric butterfly valves, in particular to a soft sealing eccentric butterfly valve.

Background technique

In the prior art, the butterfly valve is an important equipment in the water supply and drainage pipeline system. With the progress of industrial technology, higher requirements are put forward for the structure and performance of the butterfly valve. At present, it is widely used in municipal, petroleum, chemical, light industry and other water supply and drainage industries. There are many types of butterfly valves, including soft-sealed butterfly valves with rubber seals and hard-sealed butterfly valves with metal seals.

The existing double eccentric soft sealing butterfly valve structure is that the center line of rotation of the valve and the center line of the sealing surface are eccentric, and the center of rotation of the valve deviates from the axial center line of the valve body. Extrusion makes it easy to be damaged, not suitable for harsh working conditions and occasions where the sealing ring is not easy to replace. In the existing triple-eccentric hard-sealed butterfly valve, since the sealing parts are all metal parts, it is difficult to achieve complete sealing, and it is not easy to achieve bidirectional sealing. And because the above two forms of sealing structures are pressure-forced sealing, the operating torque is large when the valve is opened and closed.

After searching, the Chinese patent application number is CN204533564U, which discloses a soft-seal eccentric butterfly valve, which includes a valve body, a butterfly flap, a valve seat, a valve stem and a manual device. The valve body is located at the bottom and the valve seat is installed on the valve body. The butterfly flap is installed in the valve seat, the valve stem is connected with the butterfly flap, the manual device is connected to the valve stem to drive the valve stem to rotate to control the opening and closing, the valve seat is a conical elastic valve seat, and the butterfly flap is set by deviating from the valve seat The centerline of the sealing surface forms a primary eccentricity, and by deviating from the centerline of the pipeline, a secondary eccentricity is formed. Compared with the prior art, the utility model has the advantages of reducing friction, reducing operating torque, improving sealing performance and the like.

A soft-seal eccentric butterfly valve in the above-mentioned patent has the following shortcomings: the valve controls the opening and closing process of the butterfly plate, and the torque is not slowed down by gear meshing, which will make it difficult to open and close the valve, and the disc and the inner wall of the valve body are easy to open and close. generate friction.

Utility model content

The purpose of the utility model is to solve the process of valve control butterfly plate opening and closing existing in the prior art, without the torque reduction through gear meshing, it will cause difficulty in opening and closing the valve, and the gap between the butterfly plate and the inner wall of the valve is easy The disadvantage of friction arises while the proposed soft-seal eccentric butterfly valve.

In order to achieve the above-mentioned purpose, the utility model adopts the following technical solutions:

A soft-sealed eccentric butterfly valve includes a valve body, a support column is welded on the top outer wall of the valve body, a support frame is welded on the top outer wall of the support column, a sealing box is welded on the top outer wall of the support frame, and the outer wall on one side of the sealing box rotates A valve is connected, a driving gear is welded on the outer wall of one side of the valve, a driven gear is engaged with the outer wall of the top of the driving gear, and a threaded column is welded on the outer wall of one side of the driven gear.

As a further solution of the present invention, the outer wall of one side of the threaded column is meshed with a sector gear, the outer wall of the bottom of the sector gear is welded with a rotating column, and the outer wall of the rotating column is slidably connected to the inner wall of the top of the valve seat.

As a further solution of the present invention: the top outer wall of the rotating column is fixed with an upper connecting column by bolts, a butterfly plate is welded on the outer wall of one side of the upper connecting column, and a lower connecting column is welded on the outer wall of the bottom side of the butterfly plate.

As a further solution of the present invention, the outer wall of the bottom of the valve body is fixed with a fixing seat by bolts, and the inner wall of the fixing seat is rotatably connected with a rotating shaft.

As a further solution of the present invention, the outer wall of the rotating shaft is fixed with a lower connecting column by bolts, and the outer wall of one side of the lower connecting column is welded to the outer wall of one side of the butterfly plate.

As a further solution of the present invention, the outer wall of the butterfly plate is provided with a rubber sheath, the outer walls on both sides of the valve body are welded with flanges, and the outer walls of the flanges are fixed with pipes by bolts.

As a further solution of the present invention, a sealing tube is welded to the outer wall of one side of the pipeline, a rubber sealing ring is slidably connected to the inner wall of the valve, and the outer wall of the sealing tube is slidably connected to the outer wall of the top of the rubber sealing ring.

Compared with the prior art, the utility model has the following beneficial effects:

1. The soft-sealed eccentric butterfly valve drives the driving gear to rotate by turning the valve, the driving gear drives the driven gear to rotate, the driven gear can reduce the torque of the driving gear, and the driven gear drives the threaded column to rotate.

2. The soft-sealed eccentric butterfly valve can reduce the friction between the butterfly plate and the inner wall of the valve body through the rubber sheath, and reduce the corrosion of the butterfly plate by the water flow.

3. In this soft-sealed eccentric butterfly valve, the rubber sealing ring can make the sealing tube on the outer wall of the pipeline fit with the rubber sealing ring when the valve body and the pipeline are installed, which enhances the sealing performance of the valve body.

The parts not involved in the device are the same as the prior art or can be realized by adopting the prior art. The utility model has a simple structure and is convenient to operate.

Description of drawings

Fig. 1 is the front view structure schematic diagram of the soft sealing eccentric butterfly valve proposed by the utility model;

Fig. 2 is the bottom structure schematic diagram of the soft sealing eccentric butterfly valve proposed by the utility model;

3 is a schematic diagram of the connection structure between the butterfly valve and the pipeline of the soft sealing eccentric butterfly valve proposed by the utility model;

FIG. 4 is a schematic diagram of the internal transmission mechanism of the sealing box of the soft-seal eccentric butterfly valve proposed by the utility model.

In the picture: 1-valve body, 2-support column, 3-sealing box, 4-valve, 5-flange, 6-rubber sheath, 7-fixed seat, 8-disc, 9-upper connecting column, 10-Sealing pipe, 11-Support frame, 12-Pipeline, 13-Rubber sealing ring, 14-Threaded column, 15-Main gear, 16-Driven gear, 17-Sector gear, 18-Rotating column, 19-Rotating shaft, 20-Lower connection post.

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.

In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inside", The orientation or positional relationship indicated by "outside" is based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the indicated device or element must have a specific orientation , are constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

Soft sealing eccentric butterfly valve, in order to control the opening and closing of the butterfly valve, as shown in Figure 1, Figure 3, Figure 4, includes a valve body 1, the top outer wall of the valve body 1 is welded with a support column 2, and the top outer wall of the support column 2 is welded There is a support frame 11, the outer wall of the top of the support frame 11 is welded with a sealing box 3, a valve 4 is rotatably connected to the outer wall of one side of the sealing box 3, and a driving gear 15 is welded to the outer wall of one side of the valve 4, and the driving gear 15 A driven gear 16 is engaged with the outer wall of the top, a threaded column 14 is welded on the outer wall of one side of the driven gear 16, a sector gear 17 is engaged with the outer wall of one side of the threaded column 14, and a rotating column 18 is welded on the outer wall of the bottom of the sector gear 17. , and the outer wall of the rotating column 18 is slidably connected to the inner wall of the top of the valve seat; when the butterfly valve is opened and closed, the driving gear 15 is driven to rotate by rotating the valve 4, and the driving gear 15 drives the driven gear 16 to rotate. The driven gear 16 can weaken the driving force. The torque of the gear 15, the driven gear 16 drives the threaded column 14 to rotate, the threaded column 14 drives the sector gear 17 to rotate, and the sector gear 17 has limit devices at both ends, which can limit the movement distance and stroke of the sector gear 17. The gear 17 drives the rotating column 18 to rotate.

In order to facilitate the installation of the butterfly plate 8, as shown in Figures 2 and 3, the top outer wall of the rotating column 18 is fixed with the upper connecting column 9 by bolts, and the outer wall of the upper connecting column 9 is welded with the butterfly plate 8. A lower connecting column 20 is welded on the outer wall of the bottom side of the butterfly plate 8. The outer wall of the bottom of the valve body 1 is fixed with a fixing seat 7 by bolts. The inner wall of the fixing seat 7 is rotatably connected with a rotating shaft 19. The lower connecting column 20, and the outer wall of one side of the lower connecting column 20 is welded to the outer wall of one side of the butterfly plate 8; when the butterfly plate 8 is installed, the upper connecting column 9 is firstly fixed to the outer wall of the bottom of the rotating column 18 by bolts, and then the fixed The seat 7 is fixed on the bottom outer wall of the valve body 1 by bolts, so that the rotating shaft 19 slides to the inner wall of the lower connecting column 20, and then the rotating shaft 19 is fixed between the lower connecting column 20 by bolts, and the rotation of the butterfly plate 8 can be controlled by rotating the valve 4. angle, so as to seal and open the valve body 1.

In order to improve the sealing performance of the valve body 1, as shown in Figures 1 and 3, the outer wall of the butterfly plate 8 is provided with a rubber sheath 6, and the outer walls of the valve body 1 are welded with flanges 5 on both sides. The outer wall of the flange plate 5 is fixed with a pipe 12 by bolts, the outer wall of one side of the pipe 12 is welded with a sealing pipe 10, the inner wall of the valve body 1 is slidably connected with a rubber sealing ring 13, and the outer wall of the sealing pipe 10 is slidably connected to the rubber sealing ring 13 The outer wall of the top; the friction between the disc 8 and the inner wall of the valve body 1 can be reduced by the rubber sheath 6, and the corrosion of the disc 8 by the water flow can be reduced. The sealing tube 10 on the outer wall of 12 and the rubber sealing ring 13 are attached to enhance the sealing performance of the valve body 1 .

Working principle: When the butterfly valve is opened and closed, the driving gear 15 is driven to rotate by rotating the valve 4, and the driving gear 15 drives the driven gear 16 to rotate. The driven gear 16 can reduce the torque of the driving gear 15, and the driven gear 16 drives the thread. The column 14 rotates, and the threaded column 14 drives the sector gear 17 to rotate. The two ends of the sector gear 17 are provided with limiting devices, which can limit the movement distance and stroke of the sector gear 17. The sector gear 17 drives the rotating column 18 to rotate. When the plate 8 is installed, the upper connecting column 9 is firstly fixed to the bottom outer wall of the rotating column 18 by bolts, and then the fixing seat 7 is bolted to the bottom outer wall of the valve body 1, so that the rotating shaft 19 slides to the inner wall of the lower connecting column 20, and then passes through the bottom wall of the valve body 1. The bolts fix the shaft 19 between the lower connecting columns 20, and the rotation angle of the disc 8 can be controlled by rotating the valve 4, so as to seal and open the valve body 1, and the rubber sheath 6 can reduce the disc 8 and the valve body. 1. The friction between the inner walls reduces the corrosion of the water flow to the butterfly plate 8. The rubber sealing ring 13 can make the sealing pipe 10 on the outer wall of the pipe 12 and the rubber sealing ring 13 fit when the valve body 1 and the pipe 12 are installed. , which enhances the sealing performance of the valve body 1.

The above are only the preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited to this. Equivalent replacement or modification of the new technical solution and its utility model concept shall be included within the protection scope of the present utility model.

Claims (7)

1. A soft-sealed eccentric butterfly valve, comprising a valve body (1), a support column (2) is welded on the top outer wall of the valve body (1), and a support frame (11) is welded on the top outer wall of the support column (2). A sealing box (3) is welded to the top outer wall of the support frame (11), a valve (4) is rotatably connected to the outer wall of one side of the sealing box (3), and a driving gear (15) is welded to the outer wall of the valve (4), A driven gear (16) is engaged with the top outer wall of the driving gear (15), and a threaded column (14) is welded on the outer wall of one side of the driven gear (16). 2. The soft-seal eccentric butterfly valve according to claim 1, characterized in that a sector gear (17) is engaged with the outer wall of one side of the threaded column (14), and a rotating column (17) is welded on the outer wall of the bottom of the sector gear (17). 18), and the outer wall of the rotating column (18) is slidably connected to the inner wall of the top of the valve seat. 3. The soft-sealed eccentric butterfly valve according to claim 2, wherein the top outer wall of the rotating column (18) is fixed with an upper connecting column (9) by bolts, and the outer wall of one side of the upper connecting column (9) is welded. There is a butterfly plate (8), and a lower connecting column (20) is welded on the outer wall of the bottom side of the butterfly plate (8). 4. The soft-seal eccentric butterfly valve according to claim 3, characterized in that a fixing seat (7) is fixed on the bottom outer wall of the valve body (1) by bolts, and a rotating shaft (7) is rotatably connected to the inner wall of the fixing seat (7). 19). 5. The soft-seal eccentric butterfly valve according to claim 4, wherein the outer wall of the rotating shaft (19) is fixed with a lower connecting column (20) by bolts, and the outer wall of one side of the lower connecting column (20) is welded to the butterfly plate (8) One side outer wall. 6. The soft-seal eccentric butterfly valve according to claim 5, characterized in that, the outer wall of the butterfly plate (8) is provided with a rubber sheath (6), and the outer walls of the valve body (1) are welded with flanges on both sides A plate (5), the outer wall of the flange plate (5) is fixed with a pipe (12) by bolts. 7. The soft-sealed eccentric butterfly valve according to claim 6, characterized in that, a sealing tube (10) is welded to the outer wall of one side of the pipeline (12), and a rubber sealing ring (10) is slidably connected to the inner wall of the valve body (1). 13), and the outer wall of the sealing tube (10) is slidably connected to the outer wall of the top of the rubber sealing ring (13).

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