Pneumatic rotary feed valve

Abstract

The utility model relates to the technical field of feed valves, and discloses a pneumatic rotary feed valve which comprises a pipe body and an air cylinder, a baffle unit is arranged in a cavity of the pipe body, the baffle unit comprises an arc-shaped baffle and a rotating shaft, the rotating shaft movably penetrates through the pipe body through a bearing, a flat plate and a protective cover are fixedly connected to the outer wall face of the pipe body, and the air cylinder is arranged on the flat plate. The air cylinder is fixedly installed on the flat plate, a rotating assembly is arranged in a cavity of the protection cover and comprises a worm gear, a worm and a long shaft, and a driving unit is arranged at the top end of the flat plate and comprises a gear and a rack. A baffle unit is arranged to control the feeding speed and the feeding amount in a pipe body in the rotating process, a rotating assembly is arranged, a long shaft rotates to enable the baffle unit to rotate, a worm gear is movably meshed with a worm, so that the device has a self-locking property, the stability of the device is better, and the driving unit is arranged to drive the device to rotate. The air cylinder enables the long shaft to rotate forwards and reversely in the working process so as to control the feeding speed and the feeding amount.

Description

Technical Field

[0001] The utility model relates to the technical field of feed valves, in particular to a pneumatic rotary feed valve. Background Art

[0002] The pneumatic rotary feed valve is a device that uses the principle of pneumatics to control the flow of media and is commonly used in fluid control systems in the industrial field.

[0003] Pneumatic rotary feed valve is suitable for pipeline conveying systems of slurries, granular solids and liquid-solid mixtures with low viscosity. The opening is adjusted at any time by the cylinder to control the flow rate and feed amount of the material. The pneumatic rotary feed valve in the prior art is directly driven by the cylinder. After long-term use, the parts of the pneumatic actuator (such as the cylinder, piston, etc.) may cause the valve to fail to operate normally due to wear, aging or damage, causing the feed valve to fail. There is no self-locking device designed to limit the rotation of the valve core to deal with emergencies.

[0004] To this end, those skilled in the art provide a pneumatic rotary feed valve to solve the problems raised in the above background technology. Utility Model Content

[0005] The utility model mainly solves the technical problems existing in the above-mentioned prior art and provides a pneumatic rotary feed valve.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a pneumatic rotary feed valve, comprising a tube body and a cylinder, a baffle unit for rotary feeding is arranged in the cavity of the tube body, the baffle unit comprises an arc-shaped baffle and a rotating shaft, the arc-shaped baffle is distributed in a ring array around the rotating shaft, the rotating shaft movably penetrates the tube body through a bearing, a flat plate and a protective cover are fixedly connected to the outer wall surface of the tube body, the cylinder is fixedly installed on the flat plate, a rotating assembly for rotating the rotating shaft is arranged in the cavity of the protective cover, the rotating assembly comprises a worm gear, a worm and a long shaft, the long shaft movably penetrates the protective cover, a driving unit for driving the long shaft to rotate is arranged at the top of the flat plate, and the driving unit comprises a gear and a rack.

[0007] Preferably, the rotating shaft is fixed outside the tube body and penetrates the worm wheel, the long shaft is fixed and penetrates the worm, and the worm is movably meshed with the worm wheel.

[0008] Preferably, a vertical plate is fixedly mounted on the top wall of the flat plate, one end of the long axis is movably mounted on the vertical plate through a bearing, and the other end of the long axis movably passes through the protective cover and is movably mounted on a side wall in the protective cover cavity through a bearing.

[0009] Preferably, one end of the long axis away from the protective cover is fixedly passed through the gear, and the long axis and the flat plate are parallel to each other.

[0010] Preferably, the telescopic end of the cylinder is fixedly connected to a push plate, and the push plate is fixedly connected to one end of the rack.

[0011] Preferably, a limit bar is fixedly mounted on the top wall of the flat plate, the number of the limit bars is two, the two limit bars are parallel to each other, and the rack is movably engaged between the two limit bars.

[0012] Preferably, the rack is movably meshed with the gear, and the rack and the major axis are perpendicular to each other.

[0013] The utility model provides a pneumatic rotary feed valve. It has the following beneficial effects:

[0014] (1) This pneumatic rotary feed valve has a baffle unit arranged in the cavity of the tube body. The baffle unit can control the feed speed and feed amount in the tube body during rotation. A rotating assembly is arranged in the protective cover. The long shaft rotates to rotate the baffle unit. The worm gear and the worm are arranged to engage with each other, so that the device has self-locking properties and better stability. A driving unit is arranged so that the cylinder can make the long shaft rotate forward and reverse during operation to control the feed speed and feed amount. The device is easy to operate, has a long service life, and has low subsequent maintenance costs.

[0015] (2) A pneumatic rotary feed valve, wherein a vertical plate is installed at the top of a flat plate, one end of a long shaft is movably installed on the vertical plate through a bearing, and the other end of the long shaft is movably installed in the cavity of a protective cover through a bearing, and the long shaft is fixedly passed through a gear and a worm, so that the rotation of the gear drives the long shaft and the worm to rotate.

[0016] (3) This is a pneumatic rotary feed valve. During operation, the telescopic end of the cylinder pushes the push plate to move. The push plate is fixedly connected to one end of the rack, thereby pushing the rack to move. The rack and the gear are movably engaged to drive the long axis to rotate. The limit bar is set to play a role of limiting and guiding the rack. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a three-dimensional structural schematic diagram of a pneumatic rotary feed valve of the utility model;

[0018] Figure 2 It is a top view schematic diagram of a pneumatic rotary feed valve of the utility model;

[0019] Figure 3 It is a three-dimensional structural schematic diagram of a baffle unit of a pneumatic rotary feed valve of the utility model;

[0020] Figure 4 The utility model is a schematic diagram of the three-dimensional structure of a rotating assembly and a driving unit of a pneumatic rotary feed valve.

[0021] Legend:

[0022] 10. Tube body; 11. Baffle unit; 12. Protective cover; 13. Flat plate; 14. Cylinder; 15. Driving unit; 16. Arc baffle; 17. Rotating shaft; 18. Worm gear; 19. Vertical plate; 20. Long shaft; 21. Worm; 22. Push plate; 23. Rack; 24. Limiting strip; 25. Gear. DETAILED DESCRIPTION

[0023] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0024] In the description of the embodiments of the present utility model, it should be noted that the terms "center", "upper", "lower", "inner", "outer", "side", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0025] In the description of the embodiments of the present utility model, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present utility model can be understood according to specific circumstances.

[0026] like Figure 1-4 As shown: a pneumatic rotary feed valve, including a tube body 10 and a cylinder 14, a baffle unit 11 for rotary feeding is arranged in the cavity of the tube body 10, the baffle unit 11 includes an arc baffle 16 and a rotating shaft 17, the arc baffle 16 is distributed in a ring array around the rotating shaft 17, the rotating shaft 17 movably penetrates the tube body 10 through a bearing, a plate 13 and a protective cover 12 are fixedly connected to the outer wall surface of the tube body 10, the cylinder 14 is fixedly installed on the plate 13, a rotating component for rotating the rotating shaft 17 is arranged in the cavity of the protective cover 12, the rotating component includes a worm gear 18, a worm 21 and a long shaft 20, the long shaft 20 movably penetrates the protective cover 12, and a driving unit 15 for driving the long shaft 20 to rotate is arranged on the top of the plate 13, and the driving unit 15 includes a gear 25 and a rack 23.

[0027] Specifically, by setting a baffle unit 11 in the cavity of the tube body 10, the baffle unit 11 can control the feed speed and feed amount in the tube body 10 during rotation, and a rotating component is set in the protective cover 12, and the long shaft 20 rotates to make the baffle unit 11 rotate. By setting the worm gear 18 and the worm 21 to be movably engaged, the device has self-locking properties and better stability. By setting the driving unit 15, the cylinder 14 makes the long shaft 20 rotate forward and reverse during work to control the feed speed and feed amount. The device is simple to operate, has a long service life, and has low later maintenance costs.

[0028] The rotating shaft 17 is fixedly inserted through the worm wheel 18 outside the tube body 10 , and the long shaft 20 is fixedly inserted through the worm 21 , and the worm 21 is movably meshed with the worm wheel 18 .

[0029] Specifically, a rotating shaft 17 is fixedly provided to pass through the worm wheel 18, a worm 21 is movably engaged with the worm wheel 18, and a long shaft 20 is fixedly provided to pass through the worm 21, so that during the rotation of the long shaft 20, the worm 21 drives the worm wheel 18 to rotate, the worm wheel 18 drives the rotating shaft 17 to rotate, and the rotation of the rotating shaft 17 drives the arc baffle 16 to rotate, thereby changing the speed and feed amount of the material passing through the tube body 10.

[0030] A vertical plate 19 is fixedly mounted on the top wall of the flat plate 13, one end of a long shaft 20 is movably mounted on the vertical plate 19 through a bearing, and the other end of the long shaft 20 movably penetrates the protective cover 12 and is movably mounted on a side wall of the cavity of the protective cover 12 through a bearing. One end of the long shaft 20 away from the protective cover 12 is fixedly penetrated through the gear 25, and the long shaft 20 and the flat plate 13 are parallel to each other.

[0031] Specifically, a vertical plate 19 is installed at the top of the flat plate 13, one end of the long shaft 20 is movably installed on the vertical plate 19 through a bearing, and the other end of the long shaft 20 is movably installed in the cavity of the protective cover 12 through a bearing. The long shaft 20 is fixedly passed through the gear 25 and the worm 21, so that the rotation of the gear 25 drives the long shaft 20 and the worm 21 to rotate.

[0032] The telescopic end of the cylinder 14 is fixedly connected with a push plate 22, and the push plate 22 is fixedly connected with one end of a rack 23. A limit bar 24 is also fixedly installed on the top wall of the flat plate 13. There are two limit bars 24, and the two limit bars 24 are parallel to each other. The rack 23 is movably engaged between the two limit bars 24. The rack 23 is movably engaged with the gear 25, and the rack 23 and the long axis 20 are perpendicular to each other.

[0033] Specifically, during operation, the telescopic end of the cylinder 14 pushes the push plate 22 to move, and the push plate 22 is fixedly connected to one end of the rack 23, thereby pushing the rack 23 to move. The rack 23 is movably engaged with the gear 25 to drive the long shaft 20 to rotate, and the limit bar 24 is provided to serve as a limit guide for the rack 23.

[0034] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. The technicians in this industry should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model will have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A pneumatic rotary feed valve, comprising a tube body (10) and a cylinder (14), characterized in that: A baffle unit (11) for rotating feeding is arranged in the cavity of the tube body (10). The baffle unit (11) includes an arc-shaped baffle (16) and a rotating shaft (17). The arc-shaped baffles (16) are distributed in a ring array around the rotating shaft (17). The rotating shaft (17) movably penetrates the tube body (10) through a bearing. A flat plate (13) and a protective cover (12) are fixedly connected to the outer wall surface of the tube body (10). The cylinder (14) is fixedly mounted on the flat plate (13). A rotating assembly for rotating the rotating shaft (17) is arranged in the cavity of the protective cover (12). The rotating assembly includes a worm wheel (18), a worm (21) and a long shaft (20). The long shaft (20) movably penetrates the protective cover (12). A driving unit (15) for driving the long shaft (20) to rotate is arranged at the top of the flat plate (13). The driving unit (15) includes a gear (25) and a rack (23).

2. The pneumatic rotary feed valve according to claim 1, characterized in that: The rotating shaft (17) is fixedly connected to the worm wheel (18) outside the tube body (10), and the long shaft (20) is fixedly connected to the worm (21), and the worm (21) is movably meshed with the worm wheel (18).

3. The pneumatic rotary feed valve according to claim 1, characterized in that: A vertical plate (19) is fixedly mounted on the top wall of the flat plate (13); one end of the long axis (20) is movably mounted on the vertical plate (19) via a bearing; the other end of the long axis (20) movably penetrates the protective cover (12) and is movably mounted on a side wall of the cavity of the protective cover (12) via a bearing.

4. The pneumatic rotary feed valve according to claim 3, characterized in that: One end of the long shaft (20) away from the protective cover (12) is fixedly passed through the gear (25), and the long shaft (20) and the flat plate (13) are in a state of being parallel to each other.

5. The pneumatic rotary feed valve according to claim 1, characterized in that: The telescopic end of the cylinder (14) is fixedly connected to a push plate (22), and the push plate (22) is fixedly connected to one end of a rack (23).

6. The pneumatic rotary feed valve according to claim 1, characterized in that: A limit strip (24) is also fixedly mounted on the top wall of the flat plate (13), the number of the limit strips (24) being two, the two limit strips (24) being parallel to each other, and the rack (23) being movably engaged between the two limit strips (24).

7. The pneumatic rotary feed valve according to claim 6, characterized in that: The rack (23) is movably meshed with the gear (25), and the rack (23) and the long axis (20) are in a mutually perpendicular state.

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