CN215980857U

CN215980857U - Flange type butterfly valve

Info

Publication number: CN215980857U
Application number: CN202122040607.0U
Authority: CN
Inventors: 吴海洲
Original assignee: QIDONG HAIXIN MACHINERY CO Ltd
Current assignee: QIDONG HAIXIN MACHINERY CO Ltd
Priority date: 2021-08-27
Filing date: 2021-08-27
Publication date: 2022-03-08
Anticipated expiration: 2031-08-27

Abstract

The utility model discloses a flange type butterfly valve which comprises a support (1), a rotating shaft (2), a sealing mechanism (3), a valve body (4) and a butterfly plate (5). The front surface of the butterfly plate (5) is provided with a reinforcing rib (18) to increase the strength of the butterfly plate (5). A groove (6) is arranged on the periphery of the front surface of the butterfly plate (5), a sealing mechanism (3) is arranged on the groove (6), and a liquid level probe (15) of a liquid level sensor (14) is arranged at the bottom of the back surface of the butterfly plate (5); a servo motor (10) is arranged on the top surface of the bracket (1); a PLC (programmable logic controller) (12) is arranged on one side surface of the bracket (1), a liquid level sensor (14) is arranged on the other side surface of the bracket (1), and an alarm (17) is arranged above the liquid level sensor (14); the servo motor (10) is connected with the rotating shaft (2) through an output shaft (11). The butterfly plate strength is increased, the application range is expanded, automatic opening and closing are realized, the operation is convenient, and leakage alarm can be realized.

Description

Flange type butterfly valve

Technical Field

The utility model relates to the field of butterfly valves, in particular to a flange type butterfly valve.

Background

The flange butterfly valve is used for water supply and drainage, and the gas pipeline is used for regulating flow and intercepting medium. The butterfly plate of the butterfly valve is installed in the diameter direction of the pipeline. In the cylindrical channel of the butterfly valve body, the disc-shaped butterfly plate rotates around the axis, the rotation angle is 0-90 degrees, when the disc-shaped butterfly plate rotates to 90 degrees, the valve is in a fully-opened state, the operation is simple, and the flange type butterfly valve has good fluid controllability. The traditional flange type butterfly valve is small in working temperature range, manual operation is mostly adopted, the general installation position of a valve manual device is high, and operation is inconvenient.

CN211423413U discloses a flange formula butterfly valve, its butterfly plate includes activity butterfly plate and fixed butterfly plate, and the activity butterfly plate is located the front side of fixed butterfly plate, adjusts the one end of one side middle part fixed connection threaded rod of head, and the other end of threaded rod runs through fixed butterfly plate, and the other end of threaded rod passes through rotary joint and fixed butterfly plate swing joint. The edge of one side that activity butterfly plate and fixed butterfly plate are relative all is equipped with the roughness, and the roughness laminates with the sealing washer. The sealing ring is clamped and fixed, so that the sealing ring is prevented from loosening under the impact of fluid. But a liquid level sensor is not adopted, so that leakage loss cannot be avoided in time.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem of providing a flange type butterfly valve which realizes automatic opening and closing, increases the strength of a butterfly plate, expands the application range and gives out an alarm.

In order to solve the technical problems, the utility model provides a flange type butterfly valve which comprises a support, a rotating shaft, a sealing mechanism, a valve body and a butterfly plate. The front of the butterfly plate is provided with a reinforcing rib. The periphery of the front side of the butterfly plate is provided with a groove, the groove is provided with a sealing mechanism, and the bottom of the back side of the butterfly plate is provided with a liquid level probe of a liquid level sensor; the top surface of the bracket is provided with a servo motor; a PLC controller is arranged on one side surface of the bracket, a liquid level sensor is arranged on the other side surface of the bracket, and an alarm is arranged above the liquid level sensor; the servo motor is connected with the rotating shaft through an output shaft.

Furthermore, the sealing mechanism consists of a sealing seat and a sealing ring, and the sealing seat is fixedly provided with the sealing ring; the sealing ring is attached to the inner wall of the valve body, and the sealing seat is connected with the butterfly plate through the fixing ring.

Furthermore, a shaft hole is arranged on the butterfly plate. The shaft hole is passed to the pivot, fixes the butterfly plate in the pivot through the installed part.

Furthermore, the sealing seat and the sealing ring are integrally formed, so that the structure is firm and the sealing ring is more durable.

Furthermore, the sealing ring of the sealing mechanism is made of stainless steel, polytetrafluoroethylene or hard and soft laminated metal sheets.

Further, the controller is connected with the servo motor, the liquid level sensor and the alarm.

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

1. the front surface of the butterfly plate is provided with the reinforcing rib, so that the strength of the butterfly plate is improved.

2. The utility model adopts the sealing mechanism which is made of stainless steel, polytetrafluoroethylene and hard and soft laminated metal sheet sealing rings, has excellent sealing performance at low temperature, normal temperature and high temperature, and enlarges the application range.

3. The PLC controller drives the rotating shaft through the servo motor, and the rotating shaft drives the butterfly plate to rotate, so that the automatic opening and closing of the butterfly valve are realized.

4. When the butterfly valve is closed, if liquid leaks from the butterfly valve seal, the liquid level probe senses the leaked liquid, the liquid level probe transmits a leakage signal to the PLC through the liquid level sensor, the PLC drives the alarm to give an alarm, and a worker receives the signal to immediately overhaul the butterfly valve seal, so that leakage loss is avoided in time.

Drawings

FIG. 1 is a schematic view of the structure of the present invention.

Fig. 2 is a front view of the present invention.

Fig. 3 is a schematic view of the reinforcing rib on the front surface of the butterfly plate.

Fig. 4 is a schematic view of the sealing mechanism of the present invention.

In the figure, 1, a support, 2, a rotating shaft, 3, a sealing mechanism, 4, a valve body, 5, a butterfly plate, 6, a groove, 7, a sealing seat, 8, a sealing ring, 9, a fixing ring, 10, a servo motor, 11, an output shaft, 12, a PLC (programmable logic controller), 13, the sealing mechanism, 14, a liquid level sensor, 15, a liquid level probe, 16, a shaft hole, 17, an alarm, 18, a reinforcing rib and 19 are bolts.

Detailed Description

As shown in fig. 1 and 2, the flange type butterfly valve comprises a support 1, a rotating shaft 2, a sealing mechanism 3, a valve body 4 and a butterfly plate 5. The butterfly plate 5 is provided with a shaft hole 16. The shaft 2 passes through the shaft hole 16, and the butterfly plate 5 is fixed on the shaft 2 through the mounting piece 13. A groove 6 is arranged on the periphery of the front surface of the butterfly plate 5, a sealing mechanism 3 is arranged on the groove 6, and a liquid level probe 15 of a liquid level sensor 14 is arranged at the bottom of the back surface of the butterfly plate 5; a servo motor 10 is arranged on the top surface of the bracket 1; a PLC (programmable logic controller) 12 is arranged on one side surface of the bracket 1, a liquid level sensor 14 is arranged on the other side surface of the bracket 1, and an alarm 17 is arranged above the liquid level sensor 14; the servo motor 10 is connected to the rotary shaft 2 through an output shaft 11.

The PLC 12 is connected with the servo motor 10, the liquid level sensor 14 and the alarm 17. The PLC controller 12 drives the rotating shaft 2 through the servo motor 10, and the rotating shaft 2 drives the butterfly plate 5 to rotate, so that automatic opening and closing of the butterfly valve are achieved. Butterfly valve when the closure state, if there is liquid to reveal from butterfly valve seal, liquid is revealed to the 15 perceptions of liquid level probe, and liquid level probe 15 will reveal the signal and give PLC controller 12 through level sensor 14 transmission, and PLC controller 12 drive alarm 17 reports to the police, and staff received signal overhauls butterfly valve seal at once, in time avoids revealing the loss.

As shown in fig. 3, the front surface of the butterfly plate 5 is provided with a reinforcing rib 18 to increase the strength of the butterfly plate 5.

As shown in fig. 4, the sealing mechanism 3 is composed of a sealing seat 7 and a sealing ring 8, and the sealing seat 7 is fixedly provided with the sealing ring 8. The sealing ring 8 is attached to the inner wall of the valve body 4, and the sealing seat 7 is connected with the butterfly plate 5 through the fixing ring 9. The fixing ring 9 and the sealing seat 7 are both provided with through holes, and the butterfly plate 5 is provided with threaded holes. The bolt 19 passes through the through holes on the fixing ring 9 and the sealing seat 7 and is screwed in the threaded hole to fix the sealing seat 7 on the butterfly plate 5. When the replacement is required, the bolt 19 is unscrewed and the sealing mechanism 3 is removed to replace the bolt. The material of the sealing ring 8 of the sealing mechanism 3 is stainless steel, or polytetrafluoroethylene, or hard and soft laminated metal sheets. It has excellent sealing performance at low temperature, normal temperature and high temperature, and has wide application range. The sealing seat 7 and the sealing ring 8 are integrally formed, so that the structure is firm and the sealing ring is more durable.

The working principle of the utility model is as follows: the PLC controller 12 controls the servo motor 10 to drive the rotating shaft 2, and the rotating shaft 2 drives the butterfly plate 5 to rotate, so that automatic opening and closing are achieved, and operation is convenient. When the butterfly valve sealing device is in a closed state, if liquid leaks from the butterfly valve sealing part, the liquid level probe 15 senses the leaked liquid, the liquid level probe 15 transmits a leakage signal to the PLC 12 through the liquid level sensor 14, the PLC 12 drives the alarm 17 to give an alarm, a worker receives the signal and immediately overhauls the butterfly valve sealing, and leakage loss is avoided in time.

Claims

1. Flange formula butterfly valve, including support (1), pivot (2), sealing mechanism (3), valve body (4), butterfly plate (5), its characterized in that: the front surface of the butterfly plate (5) is provided with a reinforcing rib (18); a groove (6) is formed in the periphery of the front face of the butterfly plate (5), and a sealing mechanism (3) is arranged on the groove (6); a liquid level probe (15) of a liquid level sensor (14) is arranged at the bottom of the back of the butterfly plate (5); a servo motor (10) is arranged on the top surface of the bracket (1); one side surface of the bracket (1) is provided with a PLC (programmable logic controller) (12), and the other side surface is provided with a liquid level sensor (14); an alarm (17) is arranged above the liquid level sensor (14); the servo motor (10) is connected with the rotating shaft (2) through an output shaft (11).

2. The flange butterfly valve of claim 1, wherein: the sealing mechanism (3) consists of a sealing seat (7) and a sealing ring (8), and the sealing seat (7) is fixedly provided with the sealing ring (8); sealing ring (8) and valve body (4) inner wall laminating, seal receptacle (7) are connected with butterfly plate (5) through solid fixed ring (9).

3. The flange butterfly valve of claim 1, wherein: and the butterfly plate (5) is provided with a shaft hole (16).

4. The flange butterfly valve of claim 1, wherein: the rotating shaft (2) penetrates through the shaft hole (16), and the butterfly plate (5) is fixed on the rotating shaft (2) through the mounting piece (13).

5. The flange butterfly valve of claim 2, wherein: the sealing seat (7) and the sealing ring (8) are integrally formed.

6. The flange butterfly valve of claim 1, wherein: the sealing ring (8) of the sealing mechanism (3) is made of stainless steel, polytetrafluoroethylene or hard and soft laminated metal sheets.

7. The flange butterfly valve of claim 1, wherein: the PLC (12) is connected with the servo motor (10), the liquid level sensor (14) and the alarm (17).