CN221743230U - Two-way sealing butterfly valve - Google Patents

Abstract

The utility model discloses a two-way sealing butterfly valve, which comprises: the inside swing joint of valve body has the valve plate, fixedly connected with valve rod on the valve plate, the side surface rotation of valve rod is connected with solid fixed ring, gu fixed ring's last fixed surface is connected with the fixed column, gu fixed ring's lower fixed surface is connected with the backup pad, gu fixed ring's last fixed surface is connected with the end cover, the valve rod rotates with the end cover to be connected with the pivot, be provided with the carousel in the pivot, the side surface fixedly connected with sealing ring of valve body, the lower fixed surface of sealing ring is connected with the base, the last fixed surface of base is connected with the heater, the side surface fixedly connected with baffle of heater, be provided with sealing material between valve body and the sealing ring, through above-mentioned structure, it is effectual to have realized sealing, leak-proof, avoid rivers low temperature to freeze, avoid the extra loss of equipment, make the temperature keep at a thermostatical state's advantage.

Description

A two-way sealing butterfly valve

Technical Field

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

Background Art

Butterfly valve is a commonly used valve type, which consists of butterfly plate, valve stem, valve seat, valve body and other components. The butterfly plate is the key component of the butterfly valve, and its shape is similar to the wings of a butterfly, hence the name butterfly valve. The two-way sealing butterfly valve is a special type of butterfly valve, which has a two-way sealing function and can achieve good sealing performance under forward and reverse flow conditions. This type of butterfly valve is usually used in pipeline systems that require two-way flow control, but the traditional butterfly valve has a simple structure and poor sealing effect. The valve plate and valve body are easily frozen and cannot rotate due to low-temperature water flow, and the water flow cannot maintain a constant temperature, which easily causes additional damage to the butterfly valve. For example, a Chinese patent discloses a "two-way sealing butterfly valve" with an application number of "CN201320576313.2", which includes: valve body, valve stem, butterfly plate, worm head and end cover The end cover of the two-way sealed butterfly valve is fixed at the lower end of the valve body, the stem of the two-way sealed butterfly valve passes through the valve body and is fixed to the butterfly plate, the upper end of the valve stem passes through the bracket and is connected to the worm head, and a packing is arranged between the valve body and the valve stem of the two-way sealed butterfly valve, which is compressed by the packing gland, and the sealing ring is pressed tightly against the butterfly plate by the pressure ring and the screw to form a sealing pair, and a floating valve seat is arranged inside the sealing pair, and O-rings are arranged in the groove on the end face of the floating valve seat and the groove on the outer side, and four blocks are welded on the valve body of the two-way sealed butterfly valve, but the above components still have the following problems: simple structure, deviation in sealing effect, and the valve plate and the valve body are easily frozen and cannot rotate due to low-temperature water flow, and the water flow cannot maintain a constant temperature, which is easy to cause additional loss to the butterfly valve.

Utility Model Content

The utility model aims to solve at least one of the technical problems existing in the prior art, and provides a two-way sealing butterfly valve. By utilizing the sealing material between the sealing ring and the valve body, and by directly connecting the valve stem to the valve body, the valve plate is fixed in the valve body, and then rotated by a turntable, the sealing of the butterfly valve is ensured, so that it has a good sealing effect in both forward and reverse water flow, and has the advantage of preventing leakage. By installing a heater below the valve body and above the base, the heater is in contact with the valve body, a baffle is set, and the base and the sealing ring are used to prevent the heater from being affected, the water flow from freezing due to low temperature is avoided, and the water temperature can be kept in a relatively constant temperature state while avoiding additional loss of equipment.

The utility model also provides the above-mentioned two-way sealing butterfly valve, comprising: a valve body, a valve plate movably connected inside the valve body, a valve stem fixedly connected to the valve plate, a side surface of the valve stem rotatably connected to a fixing ring, an upper surface of the fixing ring fixedly connected to a fixing column, a lower surface of the fixing ring fixedly connected to a supporting plate, an upper surface of the fixing ring fixedly connected to an end cover, the valve stem and the end cover are rotatably connected, a side surface of the end cover is rotatably connected to a rotating shaft, a rotating disk is arranged on the rotating shaft, a sealing ring is fixedly connected to the side surface of the valve body, a lower surface of the sealing ring is fixedly connected to a base, an upper surface of the base is fixedly connected to a heater, a side surface of the heater is fixedly connected to a baffle, and a sealing material is arranged between the valve body and the sealing ring. Through the above device, the advantages of good sealing effect, leakage prevention, avoidance of low-temperature freezing of water flow, avoidance of additional loss of equipment, and keeping the water temperature at a constant temperature are achieved.

According to the bidirectional sealing butterfly valve described in the utility model, the valve stem is rotatably connected to the valve body, and the support plate is fixedly connected to the valve body. Through the above device, the valve stem position is stable and the effect of little influence during rotation is achieved.

According to the bidirectional sealing butterfly valve described in the utility model, the heater is fixedly connected to the valve body, and the baffle is fixedly connected to the valve body. Through the above device, the position of the heater and the baffle is stable, which can protect the heater and enable it to work stably.

According to the bidirectional sealing butterfly valve described in the utility model, the heater is fixedly connected to the sealing ring, and the baffle is fixedly connected to the sealing ring. Through the above device, the environment of the heater is prevented from contacting with water with the help of the sealing ring, which can prevent the heater from being damaged.

According to a bidirectional sealing butterfly valve described in the utility model, the sealing rings are fixedly connected by connecting columns, and connecting holes are provided on the sealing rings. Through the above device, the sealing rings are stabilized in position, and the connecting holes can be used to make the connection more stable when in use.

According to the bidirectional sealing butterfly valve described in the utility model, the support plate is rotatably connected to the valve stem, and the valve stem is rotatably connected to the rotating shaft through the end cover. Through the above device, the valve stem and the rotating shaft are closely connected and can rotate flexibly.

According to a bidirectional sealing butterfly valve described in the utility model, a limit plate is arranged inside the rotating shaft, and the turntable is rotatably connected with the limit plate. Through the above device, the rotation angle of the turntable is limited, which can make the valve plate rotation amplitude deviation small.

According to the bidirectional sealing butterfly valve described in the utility model, the valve stem is specifically made of copper alloy, and the valve plate is specifically made of polytetrafluoroethylene. Through the above device, the valve plate and the valve stem are made of hard, corrosion-resistant and rust-proof materials, which can ensure that the water quality is not damaged and the service life is longer.

Beneficial Effects

1. Compared with the prior art, the bidirectional sealing butterfly valve uses the sealing material between the sealing ring and the valve body, and directly connects the valve stem to the valve body, so that the valve plate is fixed in the valve body, and then rotated by the turntable, thereby ensuring the sealing of the butterfly valve, so that it has a better sealing effect in the case of forward and reverse water flow, and has the advantage of preventing leakage.

2. Compared with the prior art, the bidirectional sealed butterfly valve has the advantage of preventing water from freezing due to low temperature by installing a heater below the valve body and above the base, with the heater in contact with the valve body and a baffle, and using the base and the sealing ring to ensure that the heater is not affected, thereby avoiding additional losses to the equipment while ensuring that the water temperature is in a relatively constant temperature state.

BRIEF DESCRIPTION OF THE DRAWINGS

The utility model is further described below in conjunction with the accompanying drawings and embodiments;

FIG1 is an overall structural diagram of a bidirectional sealing butterfly valve of the utility model;

FIG2 is a side view of the bidirectional sealing butterfly valve of the utility model;

FIG3 is a right side cross-sectional view of the bidirectional sealing butterfly valve of the utility model;

FIG. 4 is a left sectional view of the bidirectional sealing butterfly valve of the utility model.

Legend:

1. End cover; 2. Rotating shaft; 3. Turntable; 4. Fixed ring; 5. Fixed column; 6. Valve body; 7. Support plate; 8. Valve stem; 9. Connecting column; 10. Base; 11. Sealing ring; 12. Connecting hole; 13. Heater; 14. Baffle; 15. Valve plate.

DETAILED DESCRIPTION

This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.

1-4, the utility model embodiment of a two-way sealing butterfly valve includes: a valve body 6, the valve body 6 is internally movably connected with a valve plate 15 to limit the valve plate 15 and provide support, the valve plate 15 is fixedly connected with a valve stem 8 to provide support for the valve stem 8, the side surface of the valve stem 8 is rotatably connected with a fixing ring 4 to limit the fixing ring 4, the upper surface of the fixing ring 4 is fixedly connected with a fixing column 5 to make the connection between the fixing rings 4 more fixed, the lower surface of the fixing ring 4 is fixedly connected with a support plate 7 to provide support for the fixing ring 4, and the upper surface of the fixing ring 4 is fixedly connected with an end cover 1 to provide support for the end cover 1.

The valve stem 8 is rotatably connected to the end cover 1 to limit the movement of the valve stem 8. The side surface of the end cover 1 is rotatably connected to the rotating shaft 2 to provide support for the rotating shaft 2. A turntable 3 is provided on the rotating shaft 2 to provide support for the turntable 3. The side surface of the valve body 6 is fixedly connected to a sealing ring 11 to limit the sealing ring 11. The lower surface of the sealing ring 11 is fixedly connected to a base 10 to provide support for the sealing ring 11. The upper surface of the base 10 is fixedly connected to a heater 13 to provide support for the heater 13. The side surface of the heater 13 is fixedly connected to a baffle 14 to provide protection for the heater 13.

The heater 13 is fixedly connected to the valve body 6, and the heater 13 is fixedly connected to the sealing ring 11 to limit the position of the heater 13. The baffle 14 is fixedly connected to the valve body 6, and the baffle 14 is fixedly connected to the sealing ring 11 to limit the position of the baffle 14. A sealing material is provided between the valve body 6 and the sealing ring 11 to limit and support the sealing material. The sealing rings 11 are fixedly connected by connecting columns 9 to reinforce the sealing rings 11. The sealing rings 11 are provided with connecting holes 12 to limit the position of the connecting holes 12.

The valve stem 8 is rotatably connected to the valve body 6 to limit the valve stem 8. The support plate 7 is fixedly connected to the valve body 6 to provide support for the support plate 7. The valve stem 8 is specifically made of copper alloy to limit the material of the valve stem 8. The valve plate 15 is specifically made of polytetrafluoroethylene to limit the material of the valve plate 15. The support plate 7 is rotatably connected to the valve stem 8 to reinforce the valve stem 8. The valve stem 8 is rotatably connected to the rotating shaft 2 through the end cover 1 to provide rotational force for the valve stem 8. A limiting plate is arranged inside the rotating shaft 2 to limit the limiting plate. The turntable 3 is rotatably connected to the limiting plate to limit the turntable 3.

Working principle: During use, the rotating shaft 2 is connected to the valve stem 8 inside the end cover 1 through the rotating disk 3 to rotate and control the rotation of the valve stem 8. The valve plate 15 directly connected to the valve stem 8 rotates to control the flow and stop. The sealing ring 11 and the sealing material are directly connected to the valve body 6 to improve the sealing of the butterfly valve. A heater 13 and a baffle 14 are added above the base 10 installed under the sealing ring 11. The baffle 14 enables the heater 13 to work stably, and the heater 13 prevents the water flow from freezing, while providing a constant temperature state for the water flow. The support plate 7 installed above the valve body 6 stabilizes the position of the fixing ring 4, and the fixing rings 4 are reinforced by fixing columns 5, and the fixing rings 4 provide a stable state for the end cover 1.

The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims (8)

1. A two-way sealing butterfly valve, characterized in that it comprises: a valve body (6), the valve body (6) is movably connected to a valve plate (15) inside, the valve plate (15) is fixedly connected to a valve stem (8), the side surface of the valve stem (8) is rotatably connected to a fixing ring (4), the upper surface of the fixing ring (4) is fixedly connected to a fixing column (5), the lower surface of the fixing ring (4) is fixedly connected to a support plate (7), the upper surface of the fixing ring (4) is fixedly connected to an end cover (1), the valve stem (8) and the end cover are fixedly connected to each other. The cover (1) is rotatably connected, the side surface of the end cover (1) is rotatably connected to a rotating shaft (2), a rotating disk (3) is arranged on the rotating shaft (2), the side surface of the valve body (6) is fixedly connected to a sealing ring (11), the lower surface of the sealing ring (11) is fixedly connected to a base (10), the upper surface of the base (10) is fixedly connected to a heater (13), the side surface of the heater (13) is fixedly connected to a baffle (14), and a sealing material is arranged between the valve body (6) and the sealing ring (11). 2. A bidirectional sealing butterfly valve according to claim 1, characterized in that the valve stem (8) is rotatably connected to the valve body (6), and the support plate (7) is fixedly connected to the valve body (6). 3. A bidirectional sealing butterfly valve according to claim 1, characterized in that the heater (13) is fixedly connected to the valve body (6), and the baffle (14) is fixedly connected to the valve body (6). 4. A bidirectional sealing butterfly valve according to claim 3, characterized in that the heater (13) is fixedly connected to the sealing ring (11), and the baffle (14) is fixedly connected to the sealing ring (11). 5. A bidirectional sealing butterfly valve according to claim 1, characterized in that the sealing rings (11) are fixedly connected by connecting columns (9), and connecting holes (12) are provided on the sealing rings (11). 6. A bidirectional sealing butterfly valve according to claim 1, characterized in that the support plate (7) is rotatably connected to the valve stem (8), and the valve stem (8) is rotatably connected to the rotating shaft (2) through the end cover (1). 7. A bidirectional sealing butterfly valve according to claim 1, characterized in that a limit plate is arranged inside the rotating shaft (2), and the rotating disk (3) is rotatably connected to the limit plate. 8. A bidirectional sealing butterfly valve according to claim 1, characterized in that the valve stem (8) is specifically made of copper alloy, and the valve plate (15) is specifically made of polytetrafluoroethylene.