Valve body sealing type butterfly valve

Abstract

The utility model relates to the technical field of valves, in particular to a valve body sealing type butterfly valve, which not only reduces the abrasion of a sealing ring and improves the sealing effect of the valve, but also can control the opening and closing of the valve in a manual mode and an electric mode and reduces the labor intensity of workers. Comprising a connecting mechanism; the device further comprises a sealing mechanism, a fixing mechanism, a manual mechanism, an electric driving mechanism and an inflation mechanism, the sealing mechanism is installed on the connecting mechanism and blocks gas in the pipeline, the fixing mechanism is installed on the sealing mechanism and fixes the sealing mechanism, and the manual mechanism is installed on the sealing mechanism and drives the sealing mechanism to rotate. The electric driving mechanism is installed on the hand-operating mechanism and drives the sealing mechanism to rotate, and the inflation mechanism is installed on the electric driving mechanism and cooperates with the sealing mechanism to block gas in the pipeline.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to a valve body sealing type butterfly valve. Background Art

[0002] The butterfly valve is a new type of valve that uses a disc-type opening and closing member, that is, a butterfly plate, to reciprocate and rotate about 90 degrees to open, close and adjust the fluid channel. The existing butterfly valve sealing ring is fixed on the butterfly plate by a pressure plate ring, and the valve seat and the sealing ring are precisely machined into a cone.

[0003] An existing butterfly valve, for example, a butterfly valve for preventing the sealing rubber ring from shifting disclosed in the utility model patent with application number 202221996769.X, has a main structure including a butterfly valve body, a connecting rod, a valve seat and a handwheel, and also includes a valve plate. The butterfly valve body is provided with a channel for installing the valve plate, a connecting rod is fixedly welded to the top of the butterfly valve body, a valve seat is fixedly welded to the top of the connecting rod, a handwheel is assembled on the valve seat, a first mounting flange is fixedly sleeved on the outer side of one end of the butterfly valve body, and a second mounting flange is fixedly sleeved on the outer side of one end of the butterfly valve body away from the first mounting flange; when in use, the valve body is mounted on the pipeline through two sets of flanges, and the opening and closing of the valve plate is controlled by the handwheel, which can limit the position of the sealing rubber ring body while improving the stability of the sealing rubber ring body on the butterfly valve body.

[0004] However, the sealing rings on the existing butterfly valves are easily worn out and may not seal tightly after a period of use. Moreover, most of them require manual closing of the valves, which puts pressure on the valve body and consumes a lot of physical effort to close the valves. Utility Model Content

[0005] To solve the above technical problems, the utility model provides a valve body sealing butterfly valve which not only reduces the wear of the sealing ring and improves the sealing effect of the valve, but also can control the opening and closing of the valve by manual and electric means, thereby reducing the labor intensity of workers.

[0006] The utility model discloses a valve body sealing type butterfly valve, comprising a connecting mechanism; further comprising a sealing mechanism, a fixing mechanism, a manual mechanism, an electric driving mechanism and an inflation mechanism, wherein the sealing mechanism is installed on the connecting mechanism and blocks the gas in the pipeline, the fixing mechanism is installed on the sealing mechanism and fixes the sealing mechanism, the manual mechanism is installed on the sealing mechanism and drives the sealing mechanism to rotate, the electric driving mechanism is installed on the manual mechanism and drives the sealing mechanism to rotate, and the inflation mechanism is installed on the electric driving mechanism and cooperates with the sealing mechanism to block the gas in the pipeline; the connecting mechanism is installed on the pipeline, the circulation of the gas in the pipeline is controlled by the rotation of the sealing mechanism, the stability of the sealing mechanism during rotation is enhanced by the fixing mechanism, the valve can be manually controlled to switch the valve by the manual mechanism and electrically controlled to switch the valve by the electric driving mechanism, and the wear of the sealing ring is reduced by setting the inflation mechanism, thereby improving the sealing effect of the valve.

[0007] Preferably, the connecting mechanism includes a valve body, four groups of connecting seats and four groups of positioning holes, the four groups of connecting seats are all installed on the valve body and the four groups of connecting seats are all provided with positioning holes; bolts are inserted into the positioning holes to fix the pipeline flange and the connecting seats together, so that the valve body is fixedly installed on the pipeline.

[0008] Preferably, the sealing mechanism includes a valve stem, a butterfly plate, a bearing, a sleeve and a sealing ring. The valve stem is rotatably mounted on the valve body, the butterfly plate is mounted on the valve stem, the bearing is mounted on the valve stem, the sleeve is mounted on the valve body and connected to the bearing, and the sleeve is mounted at the connection between the valve body and the valve stem; the valve stem drives the butterfly plate to rotate, and the stability of the valve stem is maintained by arranging the bearing. The sealing ring is arranged to prevent the gas in the pipeline from being discharged through the gap. When the butterfly plate is parallel to the valve body, the gas is blocked from passing through the valve body. When the butterfly plate is perpendicular to the valve body, the gas flows into the rear pipeline through the valve body.

[0009] Preferably, the fixing mechanism includes a pivot, a sleeve, a bearing and a sealing ring. The pivot is rotatably mounted on the valve body and connected to the bottom end of the butterfly plate. The sleeve is mounted on the valve body. The bearing is mounted in the sleeve and rotatably connected to the pivot. The sealing ring is mounted on the pivot. By arranging the pivot and the sleeve, the stability of the bottom end of the butterfly plate is maintained to prevent the butterfly plate from running off the track. By arranging the bearing, the pivot can rotate with the butterfly plate conveniently. By arranging the sealing ring, the gas in the pipeline can be prevented from overflowing through the gap.

[0010] Preferably, the manual mechanism includes a dustproof box, a bevel gear one, a rotating shaft, a bevel gear two and a turntable, the bottom end of the dustproof box is connected to the top end of the sleeve, the bevel gear one is installed on the top end of the valve stem, the rotating shaft is installed on the dustproof box, the bevel gear two is installed on the rotating shaft and meshes with the bevel gear one for transmission, and the turntable is installed on the rotating shaft; when the valve needs to be opened and closed, the staff drives the dustproof box to rotate by turning the turntable, the dustproof box drives the bevel gear two to rotate, the bevel gear two drives the bevel gear one to rotate, and the bevel gear one drives the valve stem to rotate to complete the opening or closing of the valve.

[0011] Preferably, the electric drive mechanism includes an electric motor, a reducer and a transmission shaft, the bottom end of the electric motor is connected to the top of the dustproof box, the bottom end of the reducer is connected to the top of the dustproof box, the transmission shaft is longitudinally connected to the reducer and connected to the top of the bevel gear one; start the motor, the motor drives the transmission shaft to rotate through the reducer, the transmission shaft drives the bevel gear one and the valve stem to rotate, thereby completing the opening or closing of the valve.

[0012] Preferably, the inflation mechanism includes an air pump, an air extraction pipe, a bracket, an air supply pipe and an air-filled water retaining strip. The bottom end of the air pump is connected to the top end of the dustproof box, the air extraction pipe is installed on the air pump, the bracket is installed on the valve body, the air supply pipe is installed on the bracket and is connected to the inside of the air pump exhaust port, and the air-filled water retaining strip is installed on the valve body and is connected to the inside of the air supply pipe. When the valve is opened, the reducer first drives the air pump to extract the gas in the air-filled water retaining strip through the air supply pipe to prevent the sealing ring from being repeatedly scratched by the butterfly plate during rotation and causing wear to the sealing ring. When the valve is closed, after the butterfly plate rotates to be level with the valve body, the reducer drives the air pump to extract air through the air extraction pipe, and then the air pump delivers the gas to the air-filled water retaining strip through the air supply pipe. The air-filled water retaining strip expands and cooperates with the butterfly plate to block the gas in the pipeline.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows: the connecting mechanism is installed on the pipeline, the circulation of gas in the pipeline is controlled by the rotation of the sealing mechanism, the stability of the sealing mechanism during rotation is enhanced by the fixing mechanism, the valve can be manually controlled by a manual mechanism and electrically controlled by an electric drive mechanism, and the wear of the sealing ring is reduced by setting an inflation mechanism, thereby improving the sealing effect of the valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the axonometric structure of the utility model;

[0015] Figure 2 It is a partially enlarged cross-sectional isometric structural diagram of the connecting mechanism, manual mechanism and electric drive mechanism of the utility model;

[0016] Figure 3 It is a schematic diagram of the cross-sectional axonometric structure of the sealing mechanism and the fixing mechanism of the utility model;

[0017] Figure 4 It is an axonometric structural diagram of the inflation mechanism of the utility model.

[0018] Markings in the accompanying drawings: 01, connecting mechanism; 11, valve body; 12, connecting seat; 13, positioning hole; 02, sealing mechanism; 21, valve stem; 22, butterfly plate; 23, bearing; 24, sleeve; 25, sealing ring; 03, fixing mechanism; 31, pivot; 32, bushing; 33, bearing; 34, sealing ring; 04, manual mechanism; 41, dustproof box; 42, bevel gear one; 43, rotating shaft; 44, bevel gear two; 45, turntable; 05, electric drive mechanism; 51, electric motor; 52, reducer; 53, transmission shaft; 06, inflation mechanism; 61, air pump; 62, exhaust pipe; 63, bracket; 64, air pipe; 65, inflation water retaining strip. DETAILED DESCRIPTION

[0019] In order to facilitate the understanding of the utility model, the utility model will be described more comprehensively below with reference to the relevant drawings. The utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the utility model more thorough and comprehensive.

[0020] Example 1

[0021] The utility model discloses a valve body sealing type butterfly valve, comprising a connecting mechanism 01; further comprising a sealing mechanism 02, a fixing mechanism 03, a manual mechanism 04, an electric driving mechanism 05 and an inflating mechanism 06, wherein the sealing mechanism 02 is mounted on the connecting mechanism 01 and blocks the gas in the pipeline, the fixing mechanism 03 is mounted on the sealing mechanism 02 and fixes the sealing mechanism 02, the manual mechanism 04 is mounted on the sealing mechanism 02 and drives the sealing mechanism 02 to rotate, the electric driving mechanism 05 is mounted on the manual mechanism 04 and drives the sealing mechanism 02 to rotate, and the inflating mechanism 06 is mounted on the electric driving mechanism 05 and cooperates with the sealing mechanism 02 to block the gas in the pipeline; the connecting mechanism 01 comprises a valve body 11, four groups of connecting seats 12 and four groups of positioning holes 13 , four groups of connecting seats 12 are all installed on the valve body 11 and the four groups of connecting seats 12 are all provided with positioning holes 13; the sealing mechanism 02 includes a valve stem 21, a butterfly plate 22, a bearing 23, a sleeve 24 and a sealing ring 25, the valve stem 21 is rotatably installed on the valve body 11, the butterfly plate 22 is installed on the valve stem 21, the bearing 23 is installed on the valve stem 21, the sleeve 24 is installed on the valve body 11 and connected to the bearing 23, the sleeve 24 is installed at the connection between the valve body 11 and the valve stem 21; the fixing mechanism 03 includes a pivot 31, a sleeve 32, a bearing 33 and a sealing ring 34, the pivot 31 is rotatably installed on the valve body 11 and connected to the bottom end of the butterfly plate 22, the sleeve 32 is installed on the valve body 11, the bearing 33 is installed in the sleeve 32 and is rotatably connected to the pivot 31, the sealing The sealing ring 34 is installed on the pivot 31; the manual mechanism 04 includes a dust box 41, a bevel gear 1 42, a rotating shaft 43, a bevel gear 2 44 and a turntable 45. The bottom end of the dust box 41 is connected to the top end of the sleeve 24, the bevel gear 1 42 is installed on the top end of the valve stem 21, the rotating shaft 43 is installed on the dust box 41, the bevel gear 2 44 is installed on the rotating shaft 43 and meshes with the bevel gear 1 42 for transmission, and the turntable 45 is installed on the rotating shaft 43; when it is working, first insert the bolt into the positioning hole 13, fix the flange and the connecting seat 12 together, so that the valve body 11 is fixedly installed on the pipeline, the valve stem 21 drives the butterfly plate 22 to rotate, and the stability of the valve stem 21 is maintained by setting the bearing 23, and the designer seals The ring 25 prevents the pipe from The gas in the pipeline is discharged through the gap. When the butterfly plate 22 is parallel to the valve body 11, the gas is blocked from passing through the valve body 11. When the butterfly plate 22 is perpendicular to the valve body 11, the gas flows into the rear pipeline through the valve body 11. The pivot 31 and the sleeve 32 are arranged to maintain the stability of the bottom end of the butterfly plate 22 to prevent the butterfly plate 22 from deviating. The bearing 33 is arranged to facilitate the pivot 31 to rotate with the butterfly plate 22. The sealing ring 34 is arranged to prevent the gas in the pipeline from overflowing through the gap. When the valve needs to be opened and closed, the staff drives the dust box 41 to rotate by turning the turntable 45, the dust box 41 drives the bevel gear 2 44 to rotate, the bevel gear 2 44 drives the bevel gear 1 42 to rotate, and the bevel gear 1 42 drives the valve stem 21 to rotate to complete the opening or closing of the valve.

[0022] Example 2

[0023] like Figures 1 to 4 As shown, a valve body sealing butterfly valve of the utility model is based on Example 1; the electric drive mechanism 05 includes a motor 51, a reducer 52 and a transmission shaft 53, the bottom end of the motor 51 is connected to the top of the dustproof box 41, the bottom end of the reducer 52 is connected to the top of the dustproof box 41, the transmission shaft 53 is longitudinally connected to the reducer 52 and is connected to the top of the bevel gear 42; the inflation mechanism 06 includes an air pump 61, an air extraction pipe 62, a bracket 63, an air delivery pipe 64 and an inflation water retaining strip 65, the bottom end of the air pump 61 is connected to the top of the dustproof box 41, the air extraction pipe 62 is installed on the air pump 61, the bracket 63 is installed on the valve body 11, and the air delivery pipe 64 is connected to the top of the bevel gear 42. The air pipe 64 is installed on the bracket 63 and is connected to the inside of the exhaust port of the air pump 61. The inflation water retaining strip 65 is installed on the valve body 11 and is connected to the inside of the air pipe 64. When it is working, the bolt is first inserted into the positioning hole 13, and the flange and the connecting seat 12 are fixed together, so that the valve body 11 is fixedly installed on the pipeline, and the valve stem 21 drives the butterfly plate 22 to rotate. The stability of the valve stem 21 is maintained by setting the bearing 23. The designer seals the ring 25 to prevent the gas in the pipeline from being discharged through the gap. When the butterfly plate 22 is parallel to the valve body 11, the gas is blocked from passing through the valve body 11. When the butterfly plate 22 is perpendicular to the valve body 11, the gas flows into the rear through the valve body 11. The square pipeline is provided with a pivot 31 and a sleeve 32 to maintain the stability of the bottom end of the butterfly plate 22 and prevent the butterfly plate 22 from running off. The bearing 33 is provided to facilitate the pivot 31 to rotate with the butterfly plate 22. The sealing ring 34 is provided to prevent the gas in the pipeline from overflowing through the gap. When the valve needs to be opened or closed, the staff drives the dust box 41 to rotate by rotating the turntable 45, and the dust box 41 drives the bevel gear 2 44 to rotate. The bevel gear 2 44 drives the bevel gear 1 42 to rotate. The bevel gear 1 42 drives the valve stem 21 to rotate to complete the opening or closing of the valve. It can also be driven by electricity to start the motor 51, and the motor 51 is driven by the reducer 52 The drive shaft 53 rotates, and the drive shaft 53 drives the bevel gear 42 and the valve stem 21 to rotate to complete the opening or closing of the valve. At the same time, when the valve is opened, the reducer 52 first drives the air pump 61 to extract the gas in the inflation water retaining strip 65 through the air pipe 64 to prevent the butterfly plate 22 from repeatedly scratching the sealing ring during rotation and causing wear to the sealing ring. When the valve is closed, after the butterfly plate 22 rotates to be level with the valve body 11, the reducer 52 drives the air pump 61 to exhaust air through the exhaust pipe 62, and then the air pump 61 delivers the gas to the inflation water retaining strip 65 through the air pipe 64. The inflation water retaining strip 65 expands and cooperates with the butterfly plate 22 to block the gas in the pipeline.

[0024] The electric motor 51, the reducer 52, and the air pump 61 of the utility model are purchased on the market, and the technicians in the industry only need to install and operate them according to the accompanying instruction manuals, without the need for the technicians in the field to make creative efforts.

[0025] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A valve body sealing type butterfly valve, comprising a connecting mechanism (01); characterized in that: The invention also comprises a sealing mechanism (02), a fixing mechanism (03), a manual mechanism (04), an electric drive mechanism (05) and an inflation mechanism (06); the sealing mechanism (02) is mounted on the connecting mechanism (01) and blocks the gas in the pipeline; the fixing mechanism (03) is mounted on the sealing mechanism (02) and fixes the sealing mechanism (02); the manual mechanism (04) is mounted on the sealing mechanism (02) and drives the sealing mechanism (02) to rotate; the electric drive mechanism (05) is mounted on the manual mechanism (04) and drives the sealing mechanism (02) to rotate; and the inflation mechanism (06) is mounted on the electric drive mechanism (05) and cooperates with the sealing mechanism (02) to block the gas in the pipeline.

2. A body-sealed butterfly valve according to claim 1, characterized in that: The connecting mechanism (01) comprises a valve body (11), four groups of connecting seats (12) and four groups of positioning holes (13); the four groups of connecting seats (12) are all installed on the valve body (11) and the four groups of connecting seats (12) are all provided with positioning holes (13).

3. A body-sealed butterfly valve according to claim 2, characterized in that: The sealing mechanism (02) comprises a valve stem (21), a butterfly plate (22), a bearing (23), a sleeve (24) and a sealing ring (25); the valve stem (21) is rotatably mounted on the valve body (11); the butterfly plate (22) is mounted on the valve stem (21); the bearing (23) is mounted on the valve stem (21); the sleeve (24) is mounted on the valve body (11) and connected to the bearing (23); and the sleeve (24) is mounted at the connection between the valve body (11) and the valve stem (21).

4. A body-sealed butterfly valve as claimed in claim 3, characterized in that: The fixing mechanism (03) comprises a pivot (31), a sleeve (32), a bearing (33) and a sealing ring (34); the pivot (31) is rotatably mounted on the valve body (11) and connected to the bottom end of the butterfly plate (22); the sleeve (32) is mounted on the valve body (11); the bearing (33) is mounted in the sleeve (32) and rotatably connected to the pivot (31); and the sealing ring (34) is mounted on the pivot (31).

5. A body-sealed butterfly valve as claimed in claim 3, characterized in that: The manual mechanism (04) comprises a dustproof box (41), a bevel gear one (42), a rotating shaft (43), a bevel gear two (44) and a rotating disk (45). The bottom end of the dustproof box (41) is connected to the top end of the sleeve (24), the bevel gear one (42) is mounted on the top end of the valve stem (21), the rotating shaft (43) is mounted on the dustproof box (41), the bevel gear two (44) is mounted on the rotating shaft (43) and meshes with the bevel gear one (42) for transmission, and the rotating disk (45) is mounted on the rotating shaft (43).

6. A body-sealed butterfly valve according to claim 5, characterized in that: The electric drive mechanism (05) comprises an electric motor (51), a speed reducer (52) and a transmission shaft (53), wherein the bottom end of the electric motor (51) is connected to the top end of the dustproof box (41), the bottom end of the speed reducer (52) is connected to the top end of the dustproof box (41), and the transmission shaft (53) is longitudinally connected to the speed reducer (52) and is connected to the top end of the bevel gear 1 (42).

7. A body-sealed butterfly valve according to claim 6, characterized in that: The inflation mechanism (06) comprises an air pump (61), an air extraction pipe (62), a bracket (63), an air supply pipe (64) and an inflation water retaining strip (65); the bottom end of the air pump (61) is connected to the top end of the dustproof box (41); the air extraction pipe (62) is mounted on the air pump (61); the bracket (63) is mounted on the valve body (11); the air supply pipe (64) is mounted on the bracket (63) and is in communication with the inside of the air outlet of the air pump (61); and the inflation water retaining strip (65) is mounted on the valve body (11) and is in communication with the inside of the air supply pipe (64).

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