Worm gear butterfly valve

Abstract

The utility model discloses a worm gear butterfly valve which comprises a valve body, the top of the valve body is fixedly connected with a fixing box, and a valve rod is inserted into the bottom of an inner cavity of the fixing box. In the using process of the worm gear butterfly valve, before a rocking wheel is rotated, the rocking wheel is pulled to move towards the front side, so that a first clamping block moves to be far away from a second clamping block along with the rocking wheel; after the valve body is closed and opened to a proper size, the rotation of the rocking wheel is stopped, the forward pulling force on the rocking wheel is released, the rocking wheel moves backwards under the action of the spring, and the rocking wheel drives the first clamping block to move to be meshed with the second clamping block, so that the rocking wheel is fixed; therefore, the rocking wheel is prevented from rotating due to misoperation or collision, the flow of the valve body is controlled, and the control precision of the valve is improved.

Description

Technical Field

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

[0002] The worm gear butterfly valve, also known as the worm gear flange flap valve, is a simple regulating valve that can also be used for the on-off control of low-pressure pipeline media. The worm gear butterfly valve is often used in pipelines that transport various corrosive and non-corrosive fluid media in engineering systems such as generators, coal gas, natural gas, liquefied petroleum gas, city gas, hot and cold air, chemical smelting, power generation and environmental protection, etc., to regulate and cut off the flow of the medium. However, during the use of the worm gear flange butterfly valve, after its rocker opens or closes the valve to a certain state, no protective measures are added. However, in actual use, the rocker can easily rotate due to misoperation or collision, which makes the flow of the valve body unable to be controlled, thereby reducing the control accuracy of the valve. Utility Model Content

[0003] In order to overcome the deficiencies of the prior art, one of the purposes of the utility model is to provide a worm gear butterfly valve.

[0004] One of the purposes of the utility model is achieved by the following technical solution:

[0005] A worm gear butterfly valve comprises a valve body, the top of the valve body is fixedly connected with a fixing box, the bottom of the inner cavity of the fixing box is plugged with a valve stem, the outer edge of the valve stem is fixedly sleeved with a worm wheel, the right side of the worm wheel is provided with a worm meshing with the worm wheel, the inner cavity of the worm is fixedly penetrated with a rotating rod, the front and rear sides of the fixing box are fixedly plugged with first bearings, both ends of the rotating rod are fixedly penetrated with adjacent first bearings, the front end of the rotating rod is provided with a square tube, the inner cavity of the square tube is provided with a square rod, the rear end of the square rod is fixedly connected with the rotating rod, the front end of the square tube is fixedly connected with a rocking wheel, the outer edge of the rocking wheel is fixedly connected with a plurality of first clamping blocks, the right side of the rocking wheel is provided with a mounting rod, and the left side of the mounting rod is fixedly connected with a second clamping block;

[0006] A second bearing is fixedly sleeved on the outer edge of the square tube near the rear end, a horizontal plate is fixedly connected to the left side of the second bearing, a spring is fixedly connected to the rear side of the horizontal plate, the spring is fixedly connected to the front side of the fixed box, a limit plate is provided on the front side of the horizontal plate, a through hole is opened on the horizontal plate, a fixing rod is fixedly connected to the rear side of the limiting plate, the rear end of the fixing rod movably passes through the through hole and the spring, and is fixedly connected to the front side of the fixed box.

[0007] Furthermore, flanges are fixedly sleeved on the outer edge of the valve body near both ends, and a plurality of flange holes are opened on the flange, and the plurality of flange holes are arranged in a circular array.

[0008] Furthermore, a box cover is provided on the top of the fixed box, screws are inserted into the top of the box cover near the four corners, screw holes are opened on the top of the fixed box near the four corners, and the screws are inserted into the inner cavities of adjacent screw holes.

[0009] Furthermore, the front end of the square rod is fixedly connected to a limiting rod, and limiting grooves are provided on both left and right sides of the square tube, and both ends of the limiting rod movably penetrate adjacent limiting grooves.

[0010] Furthermore, the mounting rod is fixedly connected to the right side wall of the fixing box, the cross section of the mounting rod is L-shaped, and the first clamping block and the second clamping block are engaged with each other.

[0011] Furthermore, the square rods and square tubes match each other.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. The utility model is a worm gear butterfly valve. During use, before rotating the rocking wheel, the rocking wheel is pulled to move forward, so that the first clamping block moves with the rocking wheel to be away from the second clamping block, thereby releasing the fixation of the rocking wheel, and then rotating the rocking wheel to close and open the valve body. After the valve body is closed and opened to a suitable size, the rocking wheel is stopped from rotating, and then the pulling force on the rocking wheel forward is released. The rocking wheel moves backward under the action of the spring, and the rocking wheel drives the first clamping block to move to mesh with the second clamping block, thereby fixing the rocking wheel, thereby preventing the rocking wheel from rotating due to misoperation or collision, and further controlling the flow of the valve body, thereby improving the control accuracy of the valve;

[0014] 2. The utility model is a worm gear butterfly valve. During use, the horizontal plate, the limit plate, the perforation, the fixing rod, the square tube, the square rod, the limit rod and the limit groove are arranged so that the rocker moves back and forth within a limited track, thereby ensuring the normal operation of the components. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional diagram of the utility model;

[0016] Figure 2 A three-dimensional diagram of a component fixing box of the utility model;

[0017] Figure 3 A three-dimensional diagram of a worm wheel component of the utility model;

[0018] Figure 4 A three-dimensional diagram of the rocking wheel of the utility model;

[0019] Figure 5 It is an exploded view of the square rod and square tube components of the utility model;

[0020] Figure 6 A three-dimensional diagram of the mounting rod of the components of the utility model;

[0021] Figure 7 It is a three-dimensional diagram of the horizontal plate of the utility model component.

[0022] Numbers in the figure: 1. valve body; 2. flange; 3. flange hole; 4. fixing box; 5. box cover; 6. screw; 7. screw hole; 8. valve stem; 9. worm gear; 10. worm; 11. rotating rod; 12. first bearing; 13. square rod; 14. limiting rod; 15. square tube; 16. limiting groove; 17. rocker; 18. first clamping block; 19. mounting rod; 20. second clamping block; 21. second bearing; 22. cross plate; 23. spring; 24. limiting plate; 25. fixing rod; 26. through hole. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] See also Figure 1-7 The utility model provides a technical solution: a worm gear butterfly valve, comprising a valve body 1, a flange 2 is fixedly sleeved near both ends of the outer edge of the valve body 1, a plurality of flange holes 3 are opened on the flange 2, and the plurality of flange holes 3 are arranged in a circular array, a fixed box 4 is fixedly connected to the top of the valve body 1, a box cover 5 is provided on the top of the fixed box 4, screws 6 are inserted at the top of the box cover 5 near the four corners, screw holes 7 are opened at the top of the fixed box 4 near the four corners, the screws 6 are inserted in the inner cavity of the adjacent screw holes 7, a valve stem 8 is inserted at the bottom of the inner cavity of the fixed box 4, a worm wheel 9 is fixedly sleeved on the outer edge of the valve stem 8, a worm 10 meshing with the worm wheel 9 is provided on the right side, and a rotating rod 11 is fixedly penetrated through the inner cavity of the worm 10, a first bearing 12 is fixedly inserted on the front and rear sides of the fixed box 4, and both ends of the rotating rod 11 are fixedly penetrated through the adjacent first bearings 12;

[0025] A square tube 15 is provided at the front end of the rotating rod 11, and a square rod 13 is provided in the inner cavity of the square tube 15. The square rod 13 and the square tube 15 match each other. The front end of the square rod 13 is fixedly connected to the limiting rod 14. The left and right sides of the square tube 15 are provided with limiting grooves 16. Both ends of the limiting rod 14 movably penetrate the adjacent limiting grooves 16. The rear end of the square rod 13 is fixedly connected to the rotating rod 11. The front end of the square tube 15 is fixedly connected to a rocking wheel 17. The outer edge of the rocking wheel 17 is fixedly connected to a plurality of first clamping blocks 18. A mounting rod 19 is provided on the right side of the rocking wheel 17. A second clamping block 20 is fixedly connected to the left side of the mounting rod 19. The mounting rod 19 is fixedly connected to the right side wall of the fixed box 4. The cross section of the mounting rod 19 is L-shaped. The first clamping block 18 and the second clamping block 20 are meshed with each other.

[0026] A second bearing 21 is fixedly sleeved on the outer edge of the square tube 15 near the rear end, a horizontal plate 22 is fixedly connected to the left side of the second bearing 21, a spring 23 is fixedly connected to the rear side of the horizontal plate 22, the spring 23 is fixedly connected to the front side of the fixed box 4, a limit plate 24 is provided on the front side of the horizontal plate 22, a through hole 26 is opened on the horizontal plate 22, a fixing rod 25 is fixedly connected to the rear side of the limiting plate 24, the rear end of the fixing rod 25 movably passes through the through hole 26 and the spring 23, and is fixedly connected to the front side of the fixed box 4.

[0027] Working principle: During use, the valve body 1 is connected to the connecting pipe through the flange 2, and the valve body 1 is closed and opened by rotating the rocking wheel 17. Before rotating the rocking wheel 17, pull the rocking wheel 17 to move forward, and the rocking wheel 17 drives the square tube 15, the second bearing 21 and the first clamping block 18 to move. The square tube 15 moves outside the square rod 13, and the second bearing 21 drives the cross plate 22 to move outside the fixed rod 25. When the cross plate 22 moves, the spring 23 is stretched until the rear side of the inner cavity of the limiting groove 16 is in contact with the limiting rod 14. At this time, the first clamping block 18 moves with the rocking wheel 17 away from the second clamping block 20, thereby releasing the fixation of the rocking wheel 17, and then maintains the pulling force on the rocking wheel 17 forward, and then rotates the rocking wheel 17. The rocking wheel 17 drives the rotating rod 11 to rotate through the square tube 15 and the square rod 13, and the square tube 15 rotates in the inner cavity of the second bearing 21 , the rotating rod 11 rotates in the inner cavity of the first bearing 12, the rotating rod 11 drives the worm 10 to rotate, the worm 10 drives the worm wheel 9 meshing with it to rotate, and the worm wheel 9 drives the valve stem 8 to rotate, thereby closing and opening the valve body 1. After the valve body 1 is closed and opened to an appropriate size, the rotation of the rocking wheel 17 is stopped, and then the pulling force on the rocking wheel 17 forward is released. The rocking wheel 17, the square tube 15 and the cross plate 22 move backward under the action of the spring 23 until the front side of the inner cavity of the limiting groove 16 and the front side of the limiting rod 14 are fitted with each other, and the rocking wheel 17, the square tube 15 and the cross plate 22 stop moving. At this time, the rocking wheel 17 drives the first clamping block 18 to move to mesh with the second clamping block 20, so as to fix the rocking wheel 17, thereby preventing the rocking wheel 17 from rotating due to misoperation or collision, thereby controlling the flow of the valve body, thereby improving the control accuracy of the valve.

[0028] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0029] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0030] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like 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 an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0032] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0033] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A worm gear butterfly valve, comprising a valve body, characterized in that: The top of the valve body is fixedly connected to a fixed box, a valve stem is inserted into the bottom of the inner cavity of the fixed box, a worm wheel is fixedly sleeved on the outer edge of the valve stem, a worm meshing with the worm wheel is provided on the right side of the worm wheel, a rotating rod is fixedly penetrated through the inner cavity of the worm, first bearings are fixedly inserted on the front and rear sides of the fixed box, both ends of the rotating rod are fixedly penetrated through adjacent first bearings, a square tube is provided at the front end of the rotating rod, a square rod is provided in the inner cavity of the square tube, the rear end of the square rod is fixedly connected to the rotating rod, a rocking wheel is fixedly connected to the front end of the square tube, a plurality of first clamping blocks are fixedly connected to the outer edge of the rocking wheel, a mounting rod is provided on the right side of the rocking wheel, and a second clamping block is fixedly connected to the left side of the mounting rod; A second bearing is fixedly sleeved on the outer edge of the square tube near the rear end, a horizontal plate is fixedly connected to the left side of the second bearing, a spring is fixedly connected to the rear side of the horizontal plate, the spring is fixedly connected to the front side of the fixed box, a limit plate is provided on the front side of the horizontal plate, a through hole is opened on the horizontal plate, a fixing rod is fixedly connected to the rear side of the limiting plate, the rear end of the fixing rod movably passes through the through hole and the spring, and is fixedly connected to the front side of the fixed box.

2. A worm gear butterfly valve according to claim 1, characterized in that: The outer edge of the valve body is fixedly sleeved with flanges near both ends, and the flange is provided with a plurality of flange holes, which are arranged in a circular array.

3. A worm gear butterfly valve according to claim 1, characterized in that: A box cover is arranged on the top of the fixed box, screws are inserted into the top of the box cover near the four corners, screw holes are opened near the top of the fixed box near the four corners, and the screws are inserted into the inner cavities of adjacent screw holes.

4. A worm gear butterfly valve according to claim 1, characterized in that: The front end of the square rod is fixedly connected to a limiting rod, and limiting grooves are provided on both the left and right sides of the square tube, and both ends of the limiting rod movably penetrate adjacent limiting grooves.

5. The worm gear butterfly valve according to claim 1, characterized in that: The mounting rod is fixedly connected to the right side wall of the fixing box, the cross section of the mounting rod is L-shaped, and the first clamping block and the second clamping block are meshed with each other.

6. A worm gear butterfly valve according to claim 1, characterized in that: The square rods and square tubes match each other.

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