Butterfly valve sealing surface grinding device

Abstract

The utility model relates to the field of valves, in particular to a butterfly valve sealing surface grinding device which comprises a motor, a speed reducer, a control box, a V-shaped belt, a bearing seat, a deep groove ball bearing, a supporting frame, a belt pulley, a fixing disc and the like. The motor is connected with the speed reducer through a coupler, an output shaft of the speed reducer is connected with the small belt pulley, the small belt pulley is connected with the V-shaped belt, the other end of the V-shaped belt is connected with the large belt pulley, the large belt pulley is fixed to the rotating shaft, the two ends of the rotating shaft are provided with the two deep groove ball bearings, and the deep groove ball bearings are fixed to the bearing seats. The bearing seat is fixed to the supporting frame, and the fixing discs are installed at the two ends of the outermost side of the rotating shaft. The motor, the reduction gearbox and the control box are fixed to the lower side of the supporting frame. The utility model provides a variable-frequency efficient butterfly valve grinding device, which improves the grinding and polishing precision, saves the processing and manufacturing cost, achieves the roughness of Ra0.2, and meets the requirement of zero leakage of a metal hard sealing butterfly valve.

Description

Technical Field

[0001] This utility model patent relates to the field of valves, specifically a butterfly valve sealing surface grinding device. Background Technology

[0002] A butterfly valve is a type of valve widely used in pipeline systems in industries such as petroleum, chemical, shipbuilding, and nuclear power plants to control the flow of media in pipelines. It is a type of valve that opens and closes by rotating a butterfly plate around a valve shaft. It can be used to control the flow of various types of fluids, such as air, water, steam, corrosive media, mud, oil, liquid metals, and radioactive media.

[0003] The existing butterfly valve seat and sealing ring have rough surfaces after machining. A surface roughness of Ra0.2 is required to achieve zero leakage in the valve. The existing technology uses manual grinding, which has the disadvantages of poor roundness, inability to guarantee the continuity and integrity of the sealing surface, low efficiency, and poor valve sealing performance after installation. Utility Model Content

[0004] The purpose of this utility model patent is to address the shortcomings of existing technologies by proposing a butterfly valve sealing surface grinding device.

[0005] To achieve the above objectives, this utility model patent adopts the following technical solution: a butterfly valve sealing surface grinding device, comprising a motor, a reducer, a control box, a V-belt, a bearing housing, a deep groove ball bearing, a support frame, a pulley, and a fixed plate; the motor and the reducer are connected by a coupling, the output shaft of the reducer is connected to a small pulley, the small pulley is connected to a V-belt, the other end of the V-belt is connected to a large pulley, the large pulley is fixed on a rotating shaft, two deep groove ball bearings are installed at both ends of the rotating shaft, the deep groove ball bearings are fixed on bearing housings, the bearing housings are fixed on the support frame, and fixed plates are installed at the outermost ends of the rotating shaft; the motor, the reducer, and the control box are fixed on the lower side of the support frame.

[0006] As a further description of the above technical solution:

[0007] The motor and reducer are connected by a coupling and integrated into a whole, fixed on the support frame.

[0008] As a further description of the above technical solution:

[0009] The small pulley is fixed on the output shaft of the reducer, and the large pulley is fixed on the rotating shaft. Then, the large and small pulleys are connected together by a V-belt, so that the motor rotates and drives the pulleys to rotate, thereby realizing the rotation of the rotating shaft.

[0010] As a further description of the above technical solution:

[0011] The rotating shaft has a large pulley welded in the middle and deep groove ball bearings installed at both ends, forming a whole A.

[0012] As a further description of the above technical solution:

[0013] The bearing housing is of the upper and lower separation type. First, the lower bearing housing is fixed to the support frame, then the rotating shaft assembly A is installed, and finally the upper bearing cover is put on, and the upper and lower bearing housings are tightened with bolts.

[0014] As a further description of the above technical solution:

[0015] Fixed disk I and fixed disk II are installed at the outermost two ends of the rotating shaft. After the butterfly valve body is installed on the fixed disk, it is rotated and ground.

[0016] As a further description of the above technical solution:

[0017] The control box integrates a frequency converter control device, which then controls the motor through the output control line. It can arbitrarily control the forward and reverse rotation direction and the speed of the motor.

[0018] Beneficial effects

[0019] In this utility model patent, the motor is controlled by the control box to achieve arbitrary speed and direction changes of the motor, thereby realizing the rotation of the fixed plate; the fixed plate can install butterfly valve body, sealing ring, valve seat and other parts that need to be ground, and then the operator or robotic arm grinds the sealing surface to achieve the design requirements for the roughness of the sealing surface. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model patent;

[0021] Figure 2 This is a cross-sectional view of the present utility model patent;

[0022] Figure 3 This is an enlarged view of the bearing housing structure of this utility model patent;

[0023] Figure 4 This is an enlarged view of the control box of this utility model patent;

[0024] Legend:

[0025] 1. Motor; 2. Reducer; 3. Small pulley; 4. Belt; 5. Support frame; 6. Fixed plate I; 7. Deep groove ball bearing; 8. Bearing housing; 9. Large pulley; 10. Rotating shaft; 11. Fixed plate II; 12. Control box. Detailed Implementation

[0026] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0027] Reference Figure 1-3 This utility model patent provides an embodiment of a butterfly valve sealing surface grinding device structure, including a motor 1 and a reducer 2 connected by a coupling and fixed on a support frame 5; the output shaft of the reducer 2 is connected to a small pulley 3; the small pulley 3 is connected to a V-belt 4; the other end of the V-belt 4 is connected to a large pulley 9; the large pulley 9 is fixed on a rotating shaft 10; two deep groove ball bearings 7 are installed at both ends of the rotating shaft 10; the deep groove ball bearings 7 are fixed on bearing seats 8; the bearing seats 8 are fixed on the support frame 5; fixed disk I 6 and fixed disk II 11 are respectively installed at the outermost two ends of the rotating shaft 10; and the control box 12 is fixed on the support frame 5.

[0028] In this embodiment, the motor 1 and the reducer 2 are connected by a coupling and integrated into a whole, which is fixed on the support frame 5.

[0029] In this embodiment, the small pulley 3 and the large pulley 9 are connected by the V-belt 4.

[0030] In this embodiment, the bearing seat 8 is further configured to be mounted on the support frame 5 and fixed with bolts.

[0031] In this embodiment, the deep groove ball bearings 7 are installed at both ends of the rotating shaft 10 and are installed in the bearing housing 8.

[0032] In this embodiment, the outermost two ends of the rotating shaft 10 are equipped with the fixed disk I6 and the fixed disk II11, and the valve body is mounted on the fixed disk for grinding.

[0033] In this embodiment, the control box 12 is further configured to be connected to the motor 1 via a control line, thereby controlling the motor 1 at any speed.

[0034] Its detailed connection method is a well-known technology in this field. The following mainly introduces the working principle and process, and the specific work is as follows.

[0035] Example: A motor 1 is installed in a support frame 5. A reducer 2 is installed on the motor (1). The motor 1 and the reducer 2 are connected together by a coupling. The small pulley 3 is installed on the reducer 2. The large pulley 9 is welded to the rotating shaft 10. The large pulley 9 and the small pulley 3 are connected by a belt 4. The belt 4 transmits the rotation of the reducer 2 to the large pulley 9. Deep groove ball bearings 7 are installed at both ends of the rotating shaft 10. The deep groove ball bearings 7 are installed on bearing seats 8. The bearing seats 8 are fixed on the support frame 5. The bearing seats 8 are of the upper and lower separation type. After the rotating shaft 10 is installed on the bearing seats 8, the upper half and the lower half of the bearing seats 8 are connected together by bolts to ensure that the rotating shaft 10 is fixed. The fixing plate 11 and the fixing plate 6 are respectively installed on both sides of the rotating shaft 10 and are connected and fixed by keyways. The control box 12 is installed and fixed on the support frame 5. The control line of the control box 12 is connected to the motor 1. The control box 12 has a speed control knob and a rotation direction knob.

[0036] Finally, it should be noted that the above description is only a preferred embodiment of this utility model patent and is not intended to limit this utility model patent. Although this utility model patent has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model patent should be included within the protection scope of this utility model patent.

Claims

1. A butterfly valve sealing surface grinding device, characterized in that, The motor (1) is connected to the reducer (2) via a coupling and fixed on the support frame (5); the output shaft of the reducer (2) is connected to the small pulley (3); the small pulley (3) is connected to the V-belt (4); the other end of the V-belt (4) is connected to the large pulley (9); the large pulley (9) is fixed on the rotating shaft (10); two deep groove ball bearings (7) are installed at both ends of the rotating shaft (10); the deep groove ball bearings (7) are fixed on the bearing housing (8); the bearing housing (8) is fixed on the support frame (5); fixed disk I (6) and fixed disk II (11) are respectively installed at the outermost two ends of the rotating shaft (10).

2. The butterfly valve sealing surface grinding device according to claim 1, characterized in that, The motor (1) and the reducer (2) are connected by a coupling and integrated into a whole, which is fixed on the support frame (5).

3. The butterfly valve sealing surface grinding device according to claim 1, characterized in that, The small pulley (3) is connected to the large pulley (9) via the V-belt (4).

4. The butterfly valve sealing surface grinding device according to claim 1, characterized in that, The bearing housing (8) is mounted on the support frame (5) and secured with bolts.

5. A butterfly valve sealing surface grinding device according to claim 1, characterized in that, The deep groove ball bearings (7) are installed at both ends of the rotating shaft (10) and are installed in the bearing housing (8).

6. The butterfly valve sealing surface grinding device according to claim 1, characterized in that, The outermost two ends of the rotating shaft (10) are fitted with the fixed disk I (6) and the fixed disk II (11), and the valve body is mounted on the fixed disk for grinding.

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