Butterfly valve convenient to connect

Abstract

Connecting discs are arranged at the two ends of a valve body, the surface of the valve body is fixedly connected with a motor, the output end of the motor is fixedly connected with a rotating shaft, the cylindrical surface of the rotating shaft is fixedly connected with a gear, the surface of the valve body is fixedly connected with a fixing block, and a threaded hole of the fixing block is in threaded connection with a moving shaft. The cylindrical surface of the moving shaft is fixedly connected with a matching ring, the cylindrical surface of the matching ring is provided with a tooth groove, the gear is meshed with the tooth groove of the matching ring, the cylindrical surface of the moving shaft is provided with a matching hole close to the end face, the cylindrical end face of the moving shaft is provided with a pressing block, and a fixing mechanism is arranged in the pressing block. By means of the structure, connection between the pipeline and the butterfly valve can be completed quickly and easily, and the labor intensity of operators is relieved.

Description

Technical Field

[0001] This invention relates to the field of butterfly valve technology, specifically to a butterfly valve that is easy to connect. Background Technology

[0002] A butterfly valve is a simple regulating valve, also called a flap valve. It can be used for the on / off control of low-pressure pipeline media. A butterfly valve is a type of valve whose closing element is a disc that rotates around the valve shaft to achieve opening and closing. Existing butterfly valves achieve on / off control of low-pressure pipeline media through the combined action of the valve body, valve stem, and handwheel. Turning the handwheel causes the valve stem to rotate, and the rotation of the valve stem causes the disc to rotate, thereby realizing the flow of media inside the valve body.

[0003] The connection between butterfly valves and pipelines is relatively simple, usually using flanges and screws for fixing. This requires a large number of screws, making installation complex, time-consuming, and labor-intensive. Summary of the Invention

[0004] To enable quick and easy connection of pipelines and butterfly valves, reducing the labor intensity of operators, this invention provides a butterfly valve with convenient connection, including a valve body, connecting discs at both ends of the valve body, a motor fixedly connected to the surface of the valve body, a rotating shaft fixedly connected to the output end of the motor, a gear fixedly connected to the cylindrical surface of the rotating shaft, a fixing block fixedly connected to the surface of the valve body, a through threaded hole on the side surface of the fixing block, a moving shaft threadedly connected to the threaded hole of the fixing block, the end of the moving shaft away from the center of the valve body being a cylindrical surface, a mating ring fixedly connected to the cylindrical surface of the moving shaft, a toothed groove on the cylindrical surface of the mating ring, the gear and the toothed groove of the mating ring meshing, a mating hole near the end face of the cylindrical surface of the moving shaft, a pressure block on the cylindrical end face of the moving shaft, a fixing mechanism in the pressure block, the pressure block being cylindrical, an installation hole on the side surface of the pressure block, a sliding hole on the cylindrical surface of the installation hole, a rope passage hole on the end face of the sliding hole, the fixing mechanism including a sliding sleeve, a fixing sleeve, a spring, a pull rope and a pull block, the fixing sleeve being fixedly connected to the end face of the sliding hole. The motor is designed to drive the rotating shaft and gears, which in turn drive the moving shaft. The mating ring is designed to transmit the rotation of the gears to the moving shaft. The moving shaft is designed to move the pressure block during its rotation, thereby pressing the butterfly valve and the pipe connection surface. The fixing mechanism is designed to facilitate the installation and removal of the pressure block.

[0005] Furthermore, the sliding sleeve is slidably connected to the outer cylindrical surface of the fixed sleeve. The sliding sleeve also fits into the sliding hole and the mating hole of the moving shaft. The spring is fixedly connected between the end face of the sliding sleeve and the end face of the sliding hole, and the spring ring is on the outer cylindrical surface of the fixed sleeve. The spring is provided to facilitate pushing the sliding sleeve into the mating hole of the moving shaft, thereby fixing the position of the pressure block on the moving shaft.

[0006] Furthermore, a pull rope is fixedly connected to the inner end face of the sliding sleeve, passing through the central hole and the rope-through hole of the fixed sleeve. A pull block is fixedly connected to the pull rope, and the pull block is located outside the pressure block. The pull rope and pull block are provided to facilitate pulling the sliding sleeve. When the pressure block needs to be removed, the sliding sleeve can be fully pulled into the sliding hole.

[0007] Furthermore, a protective shell is fixedly connected to the upper surface of the valve body, a valve cover is fixedly connected to the upper surface of the protective shell, and a valve stem is rotatably connected to the center of the valve cover.

[0008] Furthermore, the upper surface of the valve body is provided with a circular hole that communicates with the flow channel. The center of the flow channel of the valve body is fixedly connected to the base. The valve stem passes through the circular hole on the upper surface of the valve body and the base. The bottom of the valve stem is fixedly connected to the valve plate, which fits in the base.

[0009] Furthermore, a sealing ring is fixedly connected to the cylindrical surface of the circular hole on the upper surface of the valve body. The inner cylindrical surface of the sealing ring is in close contact with the cylindrical surface of the valve stem, and a handle is fixedly connected to the upper surface of the valve stem. The sealing ring is provided to ensure a seal between the valve stem and the valve body, and the handle is provided to facilitate the rotation of the valve stem, thereby adjusting the butterfly valve.

[0010] The beneficial effects of this invention are that it enables quick and easy connection of pipes and butterfly valves, reducing the labor intensity of operators.

[0011] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0012] The present invention will be further described below with reference to the accompanying drawings and embodiments; Figure 1 This is a schematic diagram of the overall structure of a butterfly valve that is easy to connect according to the present invention; Figure 2 This is a cross-sectional view of a butterfly valve that is easy to connect according to the present invention. Figure 3 This is a schematic cross-sectional view of the pressure block structure of a butterfly valve that is easy to connect according to the present invention; Figure 4 This is an enlarged view of a portion of the structure at point A of a butterfly valve that is easy to connect according to the present invention.

[0013] Legend: 1. Valve body; 2. Connecting plate; 3. Motor; 4. Rotating shaft; 5. Gear; 6. Fixing block; 7. Mating ring; 8. Moving shaft; 9. Fixing mechanism; 901. Sliding sleeve; 902. Fixing sleeve; 903. Spring; 904. Pull rope; 905. Pull block; 10. Pressure block; 1001. Mounting hole; 1002. Sliding hole; 1003. Rope passage hole; 11. Protective shell; 12. Valve cover; 13. Valve stem; 14. Handle; 15. Base; 16. Valve plate; 17. Sealing ring. Detailed Implementation

[0014] This section will describe in detail specific embodiments of the present invention. Preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and overall technical solution of the present invention, but they should not be construed as limiting the scope of protection of the present invention.

[0015] Reference Figures 1 to 4 This invention discloses a butterfly valve with convenient connection, comprising a valve body 1, connecting discs 2 at both ends of the valve body 1, a motor 3 fixedly connected to the surface of the valve body 1, a rotating shaft 4 fixedly connected to the output end of the motor 3, a gear 5 fixedly connected to the cylindrical surface of the rotating shaft 4, a fixing block 6 fixedly connected to the surface of the valve body 1, a through threaded hole on the side surface of the fixing block 6, a moving shaft 8 threadedly connected to the threaded hole of the fixing block 6, a cylindrical surface at the end of the moving shaft 8 away from the center of the valve body 1, a mating ring 7 fixedly connected to the cylindrical surface of the moving shaft 8, a toothed groove on the cylindrical surface of the mating ring 7, the gear 5 meshing with the toothed groove of the mating ring 7, a mating hole near the end face of the cylindrical surface of the moving shaft 8, a pressure block 10 on the cylindrical end face of the moving shaft 8, and a fixing mechanism 9 in the pressure block 10. Before installing the pipeline and the butterfly valve, the pressure block 10 needs to be removed first, the connecting discs 2 of the valve body 1 and the flange of the pipeline are spliced ​​together, and then the pressure block 10 is installed on the moving shaft 8, at which time the pressure block 10 is outside the flange of the pipeline.

[0016] A protective shell 11 is fixedly connected to the upper surface of the valve body 1. A valve cover 12 is fixedly connected to the upper surface of the protective shell 11. A valve stem 13 is rotatably connected to the center of the valve cover 12. A circular hole communicating with the flow channel is provided on the upper surface of the valve body 1. A base 15 is fixedly connected to the center of the flow channel of the valve body 1. The valve stem 13 passes through the circular hole on the upper surface of the valve body 1 and the base 15. A valve plate 16 is fixedly connected to the bottom of the valve stem 13. The valve plate 16 is fitted in the base 15.

[0017] A sealing ring 17 is fixedly connected to the cylindrical surface of the round hole on the upper surface of the valve body 1. The inner cylindrical surface of the sealing ring 17 is in close contact with the cylindrical surface of the valve stem 13. A handle 14 is fixedly connected to the upper surface of the valve stem 13.

[0018] The pressure block 10 is cylindrical, and the side surface of the pressure block 10 is provided with a mounting hole 1001. The cylindrical surface of the mounting hole 1001 is provided with a sliding hole 1002, and the end face of the sliding hole 1002 is provided with a rope passage hole 1003.

[0019] The fixing mechanism 9 includes a sliding sleeve 901, a fixed sleeve 902, a spring 903, a pull rope 904, and a pull block 905. The fixed sleeve 902 is fixedly connected to the end face of the sliding hole 1002. The sliding sleeve 901 is slidably connected to the outer cylindrical surface of the fixed sleeve 902. The sliding sleeve 901 is simultaneously fitted into the sliding hole 1002 and the mating hole of the moving shaft 8. The spring 903 is fixedly connected between the end face of the sliding sleeve 901 and the end face of the sliding hole 1002. The spring 903 is wrapped around the outer cylindrical surface of the fixed sleeve 902. The pull rope 904 is fixedly connected to the inner end face of the sliding sleeve 901. The pull rope 904 passes through the central hole and the rope passage hole 1003 of the fixed sleeve 902. The pull block 905 is fixedly connected to the pull rope 904. The pull block 905 is outside the pressure block 10. The spring 903 is always under pressure. The sliding sleeve 901 can be completely retracted into the sliding hole 1002.

[0020] Working principle: During installation, first assemble the connecting plate 2 and the flange of the pipe. Then, pull the pull rope 904 to fully pull the sliding sleeve 901 into the sliding hole 1002. Next, assemble the mounting hole 1001 of the pressure block 10 with the moving shaft 8. Release the pull rope 904 and rotate the pressure block 10. When the pressure block 10 rotates until the sliding hole 1002 and the mating hole of the moving shaft 8 coincide, the spring 903 will push the sliding sleeve 901 into the mating hole of the moving shaft 8. At this time, the sliding sleeve 901 is simultaneously in the sliding hole 1002 and the mating hole of the moving shaft 8, and the position of the pressure block 10 is fixed. Then, start the motor 3 to drive the gear 5 to rotate, which in turn drives the moving shaft 8 to rotate. During the rotation of the moving shaft 8, the pressure block 10 will move until the pressure block 10 contacts the flange surface of the pipe and presses it tightly onto the connecting plate 2, thereby completing the connection between the butterfly valve and the pipe.

[0021] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A butterfly valve that is easy to connect, characterized in that, The system includes a valve body (1), with connecting discs (2) at both ends. A motor (3) is fixedly connected to the surface of the valve body (1), and a rotating shaft (4) is fixedly connected to the output end of the motor (3). A gear (5) is fixedly connected to the cylindrical surface of the rotating shaft (4). A fixing block (6) is fixedly connected to the surface of the valve body (1). A through threaded hole is provided on the side surface of the fixing block (6). A moving shaft (8) is threadedly connected to the threaded hole of the fixing block (6). The end of the moving shaft (8) away from the center of the valve body (1) is cylindrical. A mating ring (7) is fixedly connected to the cylindrical surface of the moving shaft (8). A toothed groove is provided on the cylindrical surface of the mating ring (7). The toothed grooves of the gear (5) and the mating ring (7) are connected to each other. The moving shaft (8) has a mating hole near its end face on its cylindrical surface. The moving shaft (8) has a pressure block (10) on its cylindrical end face. The pressure block (10) has a fixing mechanism (9). The pressure block (10) is cylindrical. The side surface of the pressure block (10) has an installation hole (1001). The cylindrical surface of the installation hole (1001) has a sliding hole (1002). The end face of the sliding hole (1002) has a rope passage hole (1003). The fixing mechanism (9) includes a sliding sleeve (901), a fixing sleeve (902), a spring (903), a pull rope (904), and a pull block (905). The fixing sleeve (902) is fixedly connected to the end face of the sliding hole (1002).

2. The butterfly valve with convenient connection according to claim 1, characterized in that, The sliding sleeve (901) is slidably connected to the outer cylindrical surface of the fixed sleeve (902). The sliding sleeve (901) is simultaneously fitted in the sliding hole (1002) and the mating hole of the moving shaft (8). The spring (903) is fixedly connected between the end face of the sliding sleeve (901) and the end face of the sliding hole (1002). The spring (903) is wrapped around the outer cylindrical surface of the fixed sleeve (902).

3. The butterfly valve with convenient connection according to claim 1, characterized in that, The pull rope (904) is fixedly connected to the inner end face of the sliding sleeve (901). The pull rope (904) passes through the center hole and the rope hole (1003) of the fixed sleeve (902). The pull block (905) is fixedly connected to the pull rope (904). The pull block (905) is on the outside of the pressure block (10).

4. The butterfly valve with convenient connection according to claim 1, characterized in that, The upper surface of the valve body (1) is fixedly connected to a protective shell (11), the upper surface of the protective shell (11) is fixedly connected to a valve cover (12), and the valve cover (12) is rotatably connected to a valve stem (13).

5. A butterfly valve with convenient connection according to claim 4, characterized in that, The valve body (1) has a circular hole on its upper surface that is connected to the flow channel. The valve body (1) is fixedly connected to the base (15) at the center of the flow channel. The valve stem (13) passes through the circular hole on the upper surface of the valve body (1) and the base (15). The bottom of the valve stem (13) is fixedly connected to the valve plate (16), and the valve plate (16) is fitted in the base (15).

6. The butterfly valve with convenient connection according to claim 4, characterized in that, A sealing ring (17) is fixedly connected to the cylindrical surface of the circular hole on the upper surface of the valve body (1). The inner cylindrical surface of the sealing ring (17) is in close contact with the cylindrical surface of the valve stem (13). A handle (14) is fixedly connected to the upper surface of the valve stem (13).

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