Manual control device for split type butterfly valve

Abstract

The utility model discloses a manual control device for a split type butterfly valve, which comprises a main valve body, an auxiliary valve body is arranged in the main valve body, a valve shaft is rotatably mounted in the auxiliary valve body, a butterfly plate is fixedly connected to the outer surface of the valve shaft, a control box is fixedly mounted on the outer surface of the main valve body, a rotary table is arranged in the control box, and the rotary table is fixedly connected with the valve shaft. Teeth are fixedly connected to the periphery of the rotating disc, a rotating handle is fixedly connected to the periphery of the rotating disc, two sets of limiting rods are rotationally installed in the control box, spring pieces are fixedly installed on one sides of the two sets of limiting rods, and two sets of limiting plates are fixedly installed in the control box. According to the split type butterfly valve, the shifting piece, the rotating rod and the cam are matched with the limiting rod, the spring strip and the limiting plate to limit the rotating disc, and therefore the situation that the rotating handle is accidentally subjected to external force to rotate, so that circulation of fluid in a pipeline is affected is avoided, and the safety of the split type butterfly valve in use is improved.

Description

Technical Field

[0001] The utility model relates to the field of split-type butterfly valve equipment, in particular to a manual control device for a split-type butterfly valve. Background Art

[0002] The split butterfly valve, also known as the αβ valve, is a valve composed of an active valve and a passive valve, using split butterfly valve technology. Its working principle is similar to that of a conventional butterfly valve, which uses a circular butterfly plate as a start and stop member to control the flow of the medium in the pipeline through the rotation of the butterfly plate. However, the split butterfly valve is characterized by its split design, which gives it unique advantages in specific applications.

[0003] In order to further understand the split butterfly valve in the prior art, after searching, the Chinese patent with the announcement number: CN205859170U discloses an α, β split butterfly valve, including a main valve and an auxiliary valve, both of which are butterfly valves, and the main valve and the auxiliary valve are combined through the valve body plane to form a component valve; the main valve includes: a main valve body, a main valve bearing, a main valve sealing ring, a main valve plate, a main valve shaft seat 1, a main valve shaft seat 2, a main valve sleeve, a main valve lock, a pin, a locking shaft, a main valve handle, a hexagonal locating pin, and a gland; the auxiliary valve includes: an auxiliary valve body, an auxiliary valve body sealing ring, an auxiliary valve bearing, an auxiliary valve plate, a safety lock spring, a safety lock guide, a safety lock slider, and an auxiliary valve sleeve.

[0004] After exploration and analysis, it was found that this patent has the following shortcomings when actually used: although the opening of the butterfly valve can be controlled by the main valve handle in this patent, there is no locking mechanism on the main valve handle. When the main valve handle is accidentally subjected to external force, it is easy to rotate to open or close the butterfly valve, affecting the circulation of the medium in the pipeline, posing a safety hazard. Utility Model Content

[0005] Aiming at the technical problem that the control handle of the existing butterfly valve is easily affected by external force and has potential safety hazards, the utility model provides a manual control device for a split butterfly valve.

[0006] The technical solution adopted by the utility model is: it includes: it comprises a main valve body, a sub-valve body is arranged in the main valve body, a valve shaft is rotatably installed in the sub-valve body, a butterfly plate is fixedly connected to the outer surface of the valve shaft, a control box is fixedly installed on the outer surface of the main valve body, a turntable is arranged in the control box, teeth are fixedly connected to the periphery of the turntable, a turn handle is fixedly connected to the periphery of the turntable corresponding to the teeth, two groups of limiting rods are rotatably installed inside the control box, spring sheets are fixedly installed on one side of the two groups of limiting rods, one end of the spring sheet away from the limiting rod is fixedly connected to the inner wall of the control box, two groups of limit plates are fixedly installed in the control box, and a connecting rod is arranged between the turntable and the valve shaft.

[0007] Furthermore, a cam is rotatably installed in the control box, the cam is arranged between two groups of limiting rods, a rotating rod is fixedly connected to the cam, a paddle is fixedly installed on the top of the rotating rod, and the paddle is arranged outside the control box.

[0008] By adopting the above technical solution, the paddle can drive the cam to rotate to cause the limiting rod to rotate.

[0009] Furthermore, the main valve body and the auxiliary valve body are both provided with mounting holes, the mounting holes are connected with the interior of the main valve body, the connecting rod is arranged in the mounting hole, one end of the valve shaft is fixedly connected with a first connecting head, one end of the connecting rod is provided with a first connecting port, and the first connecting port is adapted to the connecting rod.

[0010] By adopting the above technical solution, the installation of the auxiliary valve body is facilitated, and the connecting rod and the valve shaft are clamped together.

[0011] Furthermore, a second connection port is provided on the turntable, a second connection port is plugged with a second connection head, and the second connection head is fixedly connected to an end of the connection rod away from the first connection port.

[0012] By adopting the above technical solution, the connection between the connecting rod and the rotating disk is realized, and the rotating disk can drive the connecting rod to rotate.

[0013] Furthermore, four groups of movable grooves are provided on the inner wall of the main valve body, and sealing strips are slidably installed in the four groups of movable grooves. Bolts are rotatably installed on the side of the sealing strip away from the auxiliary valve body, and the bolts are threadedly connected to the main valve body.

[0014] By adopting the above technical solution, the sealing strip contacts and squeezes the auxiliary valve body to fix the auxiliary valve body in the main valve body.

[0015] Furthermore, four groups of fixing grooves are provided on the outer wall of the auxiliary valve body, and the four groups of fixing grooves are all matched with the sealing strips.

[0016] By adopting the above technical solution, the sealing strip can not only play a fixing role, but also improve the sealing between the main valve body and the auxiliary valve body.

[0017] The beneficial effects of the utility model are: the handle drives the turntable to rotate, the turntable drives the connecting rod to rotate, the connecting rod drives the valve shaft to rotate, the valve shaft drives the butterfly plate to rotate, the butterfly plate is in a horizontal position, the pipeline is closed, the butterfly plate is in a vertical position, and the pipeline is opened to realize the manual control of the opening and closing of the split butterfly valve;

[0018] The lever is driven to rotate by the paddle, the lever drives the cam to rotate, the cam drives the limiting lever to rotate, and the limiting lever cooperates with the limit plate to limit the teeth so that the turntable no longer rotates, thereby preventing the handle from accidentally rotating due to external force and affecting the flow of fluid in the pipeline, thereby improving the safety of the split butterfly valve when in use;

[0019] The sealing strip is driven to move by the bolts, and the sealing strip contacts and squeezes the fixing groove, which not only makes the connection between the main valve body and the auxiliary valve body more firm, but also improves the sealing between the main valve body and the auxiliary valve body. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0021] Figure 2 This is a schematic diagram of the assembly of the main valve body and the auxiliary valve body in the utility model.

[0022] Figure 3 This is a schematic diagram of the internal structure of the control box in the utility model;

[0023] Figure 4 This is a schematic diagram of the structure of the valve shaft and butterfly plate in the utility model;

[0024] Figure 5 It is a structural schematic diagram of the connecting rod in the utility model;

[0025] Figure 6 It is a schematic diagram of the cross-sectional structure of the fixed groove and the movable groove in the utility model.

[0026] The numbers in the figure are: 1. main valve body; 2. auxiliary valve body; 3. control box; 4. valve shaft; 5. butterfly plate; 6. first connecting head; 7. connecting rod; 8. first connecting port; 9. second connecting head; 10. second connecting port; 11. turntable; 12. turning handle; 13. teeth; 14. limiting rod; 15. spring sheet; 16. cam; 17. turning rod; 18. paddle; 19. limit plate; 20. sealing strip; 21. mounting hole; 22. bolt; 23. fixing groove; 24. movable groove; 25. cover plate. DETAILED DESCRIPTION

[0027] In the description of the present invention, it should be noted that the terms "front", "up", "down", "left", "right", "vertical", "horizontal", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0028] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 direct connection, or an indirect connection 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 present invention can be understood according to specific circumstances.

[0029] The following is combined with Figure 1-6 The utility model is further described.

[0030] In order to solve the problems existing in the background technology, the present application proposes the following technical scheme: it includes a main valve body 1, a sub-valve body 2 is arranged in the main valve body 1, a valve shaft 4 is rotatably installed in the sub-valve body 2, a butterfly plate 5 is fixedly connected to the outer surface of the valve shaft 4, a control box 3 is fixedly installed on the outer surface of the main valve body 1, a turntable 11 is arranged in the control box 3, teeth 13 are fixedly connected on the periphery of the turntable 11, a turn handle 12 is fixedly connected at the position of the turntable 11 corresponding to the teeth 13, two groups of limiting rods 14 are rotatably installed inside the control box 3, spring sheets 15 are fixedly installed on one side of the two groups of limiting rods 14, and one end of the spring sheet 15 away from the limiting rod 14 is fixedly connected to the inner wall of the control box 3, two groups of limit plates 19 are fixedly installed in the control box 3, and a connecting rod 7 is arranged between the turntable 11 and the valve shaft 4.

[0031] The turntable 11 is rotated by turning the handle 12, and the turntable 11 drives the valve shaft 4 to rotate through the connecting rod 7, and the valve shaft 4 drives the butterfly plate 5 to rotate. When the butterfly plate 5 is in a horizontal position in the auxiliary valve body 2, the pipeline is in a closed state and the fluid cannot flow; when the butterfly plate 5 is in a vertical state in the auxiliary valve body 2, the pipeline is in an open state and the fluid can flow, thereby realizing the opening and closing of the split butterfly valve controlled by the turning handle 12.

[0032] The limit plate 19 can block the teeth 13 so that the turntable 11 stops rotating. When the end inclined surface of the limiting rod 14 abuts against the inclined surface of the teeth 13, the teeth 13 are also blocked so that the turntable 11 stops rotating. The limit plate 19 cooperates with the limiting rod 14 to prevent the adjusted turntable 11 from rotating. When the turning handle 12 is accidentally subjected to external force, the turntable 11 will not rotate either, so that the butterfly plate 5 will not flip over and will not affect the flow of fluid in the pipeline.

[0033] It is further explained that a cam 16 is rotatably installed in the control box 3 , the cam 16 is arranged between the two sets of limiting rods 14 , a rotating rod 17 is fixedly connected to the cam 16 , a paddle 18 is fixedly installed on the top of the rotating rod 17 , and the paddle 18 is arranged outside the control box 3 .

[0034] The paddle 18 can be moved to drive the rotating rod 17 to rotate, and the rotating rod 17 can drive the cam 16 to rotate, so that the paddle 18 can be used to control the cam 16 to contact with different limiting rods 14.

[0035] When the cam 16 contacts and squeezes the limiting rod 14 on the left, the limiting rod 14 rotates clockwise, and the rotation of the limiting rod 14 causes the left spring sheet 15 to elastically deform. When the cam 16 rotates counterclockwise and no longer contacts the left limiting rod 14, the left spring sheet 15 drives the left limiting rod 14 to rotate counterclockwise to its original state to restore the initial state. The setting of the spring sheet 15 plays a role of automatic resetting.

[0036] As attached Figure 3 As shown, the turning handle 12 is located on the left side of the control box 3. At this time, the butterfly plate 5 is in a vertical position, the pipeline is in an open state, and the teeth 13 are in contact with the limit plate 19 on the right. The blocking of the limit plate 19 prevents the turntable 11 from rotating clockwise. At the same time, the inclined surface of the end of the limiting rod 14 on the right is in contact with the inclined surface of the teeth 13. The limiting rod 14 limits the teeth 13. The restriction of the limiting rod 14 prevents the turntable 11 from rotating counterclockwise. The limiting rod 14 on the right cooperates with the limit plate 19 on the right to fix the position of the turntable 11 and prevent it from rotating, thereby preventing the turning handle 12 from being accidentally subjected to external force. When the rotation occurs, it affects the flow of fluid in the pipeline; when the pipeline needs to be closed, the paddle 18 is dialed, and the paddle 18 drives the cam 16 to rotate through the rotating rod 17, so that the cam 16 contacts and squeezes the limiting rod 14 on the right, and the cam 16 rotates the limiting rod 14 on the right and no longer contacts the teeth 13. At this time, the turning handle 12 can be rotated counterclockwise, and the turning handle 12 drives the butterfly plate 5 to rotate counterclockwise to a horizontal position through the turntable 11 and the connecting rod 7 to close the pipeline. At this time, the limit plate 19 on the left and the limiting rod 14 on the left limit the teeth 13, so that the turntable 11 no longer rotates.

[0037] It is further explained that a mounting hole 21 is provided on the main valve body 1 and the auxiliary valve body 2, and the mounting hole 21 is connected with the interior of the main valve body 1, and a connecting rod 7 is arranged in the mounting hole 21. One end of the valve shaft 4 is fixedly connected with a first connecting head 6, and the first connecting head 6 is located in the mounting hole 21 on the auxiliary valve body 2. A first connecting port 8 is provided at one end of the connecting rod 7, and the first connecting port 8 is adapted to the connecting rod 7.

[0038] When installing the auxiliary valve body 2 in the main valve body 1, first slide the auxiliary valve body 2 into the main valve body 1, align the mounting holes 21 on the main valve body 1 and the auxiliary valve body 2, insert the connecting rod 7 into the mounting holes 21 in the main valve body 1 and the auxiliary valve body 2, and the first connecting head 6 on the valve shaft 4 and the first connecting port 8 on the connecting rod 7 are snapped together. The connecting rod 7 fixes the auxiliary valve body 2 in the main valve body 1, and when the connecting rod 7 rotates, it will drive the valve shaft 4 to rotate synchronously.

[0039] It is further explained that a second connection port 10 is opened on the turntable 11, and a second connector 9 is plugged into the second connection port 10. The second connector 9 is fixedly connected to an end of the connecting rod 7 away from the first connection port 8, and the control box 3 and the connecting rod 7 are movably connected.

[0040] By clamping the second connector 9 in the second connection port 10 , the handle 12 drives the turntable 11 to rotate while the turntable 11 drives the connecting rod 7 to rotate, and the connecting rod 7 drives the valve shaft 4 to rotate synchronously, thereby realizing that the handle 12 controls the rotation of the valve shaft 4 .

[0041] It is further explained that four groups of movable grooves 24 are opened on the inner wall of the main valve body 1, and sealing strips 20 are slidably installed in the four groups of movable grooves 24. Bolts 22 are rotatably installed on the side of the sealing strip 20 away from the auxiliary valve body 2, and the bolts 22 are threadedly connected to the main valve body 1.

[0042] Before installing the auxiliary valve body 2, the sealing strip 20 is located in the movable groove 24 and will not hinder the installation of the auxiliary valve body 2. After the connecting rod 7 is inserted into the mounting hole 21, the bolt 22 is rotated so that the bolt 22 drives the sealing strip 20 to move toward the auxiliary valve body 2. The sealing strip 20 contacts and squeezes the outer wall of the auxiliary valve body 2. The bolt 22 cooperates with the sealing strip 20 to further improve the stability of the auxiliary valve body 2 in the main valve body 1.

[0043] It is further explained that four groups of fixing grooves 23 are provided on the outer wall of the auxiliary valve body 2, and the four groups of fixing grooves 23 are all adapted to the sealing strip 20. During installation, the bolts 22 drive the sealing strip 20 to move into the fixing grooves 23, so that the sealing strip 20 not only plays a role in reinforcing the auxiliary valve body 2, but also improves the sealing performance between the main valve body 1 and the auxiliary valve body 2.

[0044] Specific reference is made to the following operations: when installing the auxiliary valve body 2 in the main valve body 1, first slide the auxiliary valve body 2 into the main valve body 1, align the mounting holes 21 on the main valve body 1 and the auxiliary valve body 2, insert the connecting rod 7 into the mounting holes 21 in the main valve body 1 and the auxiliary valve body 2, turn the bolt 22 so that the bolt 22 drives the sealing strip 20 to move into the fixing groove 23, and then fix the control box 3 on the outer wall of the main valve body 1, and the second connecting port 10 is engaged with the second connecting head 9. Before opening or closing the split butterfly valve, pull the paddle 18, the paddle 18 drives the rotating rod 17 to rotate, the rotating rod 17 drives the cam 16 to rotate, the cam 16 contacts and squeezes the limiting rod 14, the limiting rod 14 rotates, contacts the limiting rod 14 to limit the turntable, turn the handle 12, the handle 12 drives the turntable 11 to rotate, the turntable 11 drives the connecting rod 7 to rotate, the connecting rod 7 drives the valve shaft 4 to rotate, and the valve shaft 4 drives the butterfly plate 5 to rotate.

[0045] The standard parts used in the utility model can be purchased from the market, and special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part adopt the conventional means such as mature bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt the conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here. The content not described in detail in this specification belongs to the prior art known to professional and technical personnel in this field.

[0046] Although the embodiments of the present invention have been shown and described, it will be apparent to those skilled in the art that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A manual control device for a split butterfly valve, characterized in that: The invention comprises a main valve body (1), wherein the main valve body (1) is provided with an auxiliary valve body (2), wherein a valve shaft (4) is rotatably mounted in the auxiliary valve body (2), wherein a butterfly plate (5) is fixedly connected to the outer surface of the valve shaft (4), wherein a control box (3) is fixedly mounted on the outer surface of the main valve body (1), wherein a rotating disk (11) is provided in the control box (3), wherein teeth (13) are fixedly connected to the periphery of the rotating disk (11), and wherein the periphery of the rotating disk (11) is in contact with the teeth (13). A turning handle (12) is fixedly connected at a corresponding position, and two groups of limiting rods (14) are rotatably installed inside the control box (3). A spring sheet (15) is fixedly installed on one side of the two groups of limiting rods (14), and one end of the spring sheet (15) away from the limiting rod (14) is fixedly connected to the inner wall of the control box (3). Two groups of limiting plates (19) are fixedly installed in the control box (3), and a connecting rod (7) is arranged between the turntable (11) and the valve shaft (4).

2. A manual control device for a split butterfly valve according to claim 1, characterized in that: A cam (16) is rotatably mounted in the control box (3), the cam (16) being arranged between two groups of limiting rods (14), a rotating rod (17) being fixedly connected to the cam (16), a paddle (18) being fixedly mounted on the top of the rotating rod (17), and the paddle (18) being arranged outside the control box (3).

3. A manual control device for a split butterfly valve according to claim 2, characterized in that: The main valve body (1) and the auxiliary valve body (2) are both provided with a mounting hole (21), the mounting hole (21) is communicated with the interior of the main valve body (1), the connecting rod (7) is arranged in the mounting hole (21), one end of the valve shaft (4) is fixedly connected with a first connector (6), one end of the connecting rod (7) is provided with a first connecting port (8), and the first connecting port (8) is adapted to the connecting rod (7).

4. A manual control device for a split butterfly valve according to claim 3, characterized in that: The rotating disk (11) is provided with a second connection port (10), the second connection port (10) is plugged with a second connection head (9), and the second connection head (9) is fixedly connected to an end of the connection rod (7) away from the first connection port (8).

5. A manual control device for a split butterfly valve according to claim 4, characterized in that: Four groups of movable grooves (24) are provided on the inner wall of the main valve body (1), and sealing strips (20) are slidably installed in the four groups of movable grooves (24). Bolts (22) are rotatably installed on the side of the sealing strip (20) away from the auxiliary valve body (2), and the bolts (22) are threadedly connected to the main valve body (1).

6. A manual control device for a split butterfly valve according to claim 5, characterized in that: Four groups of fixing grooves (23) are provided on the outer wall of the auxiliary valve body (2), and the four groups of fixing grooves (23) are all matched with the sealing strip (20).

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